JP3972912B2 - Waveform editing program and waveform editing apparatus - Google Patents

Description

  By performing an editing operation such as cutting or clearing a part of the waveform data or pasting or inserting another waveform data on the sampling waveform data such as a musical tone displayed on the display screen. The present invention relates to a waveform editing program and a waveform editing apparatus capable of appropriately editing waveform data.

  2. Description of the Related Art Conventionally, a waveform editing apparatus or a waveform editing program is known that can display sampling waveform data such as musical sounds on a display screen and edit it on the display screen. In particular, recently, a GUI (graphic user interface) has been adopted so that a user can easily edit waveform data. Briefly describing this, the user designates an arbitrary area of the waveform data to be edited displayed on the display screen with a pointer, and performs a predetermined editing operation to cut (delete) or delete the designated area. Can be copied. Further, the waveform data or the like of the area that has been cut or copied is temporarily stored in a buffer such as a clipboard, and the user designates an arbitrary area of the waveform data to be edited displayed on the display screen with a pointer, and The waveform data temporarily stored in the buffer can be pasted (inserted) or inserted (inserted) into a desired position of the waveform data to be edited simply by performing the editing operation.

By the way, a simple editing operation such as cutting an arbitrary area of the specified waveform data or pasting or inserting waveform data temporarily stored in the buffer will result in a musically broken connection. May be edited into discontinuous waveform data. Therefore, in the conventional waveform editing apparatus or waveform editing program, in addition to basic editing functions such as cut, copy, paste, and insert, various editing parameters relating to waveform data displayed on the display screen are set. The parameter setting function is provided. When a user performs a predetermined editing operation according to a desired editing mode such as cut, copy, paste, insert, etc., various editing parameters relating to waveform data displayed on the display screen using the parameter setting function are set. By performing editing operations such as adjusting appropriately or changing editing conditions, it is possible to edit to continuous arbitrary waveform data that is musically connected.
JP-A-8-76747 JP 2003-345361 A

  As described above, in order to edit continuous waveform data that is musically connected, every time a predetermined editing operation is performed according to the editing mode such as cut, copy, paste, insert, etc., editing is performed separately. Editing operations such as parameter adjustment and editing condition change must be performed by the user as needed. However, in the conventional waveform editing apparatus or waveform editing program, the user himself / herself makes step-by-step adjustments of editing parameters, changes of editing conditions, etc. according to editing modes and editing conditions such as cut, copy, paste, and insert. Not only is it cumbersome to do such editing work, but it is also very difficult to set editing parameters appropriately, especially for beginners with little musical knowledge. It was.

  The present invention has been made in view of the above-mentioned points, and the user can perform complicated editing by automatically setting editing parameters so that the most appropriate editing result can be obtained according to the editing mode and editing conditions. It is an object of the present invention to provide a waveform editing program and a waveform editing apparatus which can be easily edited into waveform data having a good musical connection without performing work.

The waveform editing program according to the present invention of claim 1 variably sets a desired cut target range and the lengths of the adjacent crossfade areas before and after the waveform data acquisition step and a user operation in the computer. steps and, the entire section of the waveform data the acquired based on the cut target range the set, the first waveform block preceding the cut target range, the second waveform block corresponding to the cut target range, the cut target range Dividing into three waveform blocks consisting of third waveform blocks subsequent to the step, comparing the lengths of the first and third waveform blocks with the set length of the crossfade region, If the length of the first or third waveform block is shorter than the length of the set crossfade area, the clock Sufedo adjusted automatically to fit the length to the length of the shorter first or third block areas, the adjusted cross the first and third waveform blocks mutually accordance crossfade area If the length of the first and third waveform blocks is not shorter than the length of the set cross-fade area based on the comparison, based on the comparison and the step of newly generating one continuous waveform data , The first and third waveform blocks are cross-fade to each other in accordance with the set cross-fade region, and a step of newly generating one continuous waveform data is executed .

According to the present invention, when the desired cut target range and the length of the crossfade area adjacent to the front and back are variably set according to the user operation, the waveform editing is automatically executed so that the most appropriate editing result can be obtained. To do. That is, all sections of the acquired waveform data based on the set cut target range are the first waveform block preceding the cut target range, the second waveform block corresponding to the cut target range, and following the cut target range. The third waveform block is divided into three waveform blocks. The length of the first and third waveform blocks is compared with the length of the set crossfade region, and based on this comparison, the length of the first or third waveform block is set to be longer than the length of the set crossfade region. If shorter, the length of the crossfade area is automatically adjusted to match the length of the shorter first or third block, and the first and third waveforms are adjusted according to the adjusted crossfade area. The blocks are cross-fade to each other, and one continuous waveform data is newly generated. On the other hand, when the lengths of the first and third waveform blocks are not shorter than the length of the set crossfade region, the first and third waveform blocks are crossfade connected to each other according to the set crossfade region. Then, one continuous waveform data is newly generated. In this way, when the user variably sets the desired cut target range and the length of the crossfade area adjacent to the front and back of the range, appropriate waveform editing (cut processing) is automatically executed, and the user is complicated. Thus, it is possible to easily edit the waveform data having a good musical connection without performing a simple editing operation.
According to a third aspect of the present invention, there is provided a waveform editing program according to the present invention, wherein a first waveform data to be edited is acquired in a computer, a second waveform data to be pasted is acquired, and the first waveform according to a user operation. Indicating a desired caret position in the data, comparing a tail length indicating a length of a section after the indicated caret position in the first waveform data with a length of the second waveform data; based on the comparison, if the tail length is longer than the length of said second waveform data from said first waveform entire section of the data, a fade-out area at its rear subsequent sections together including a portion preceding the caret position is taken out of the first waveform block with its front end earlier sections together including a portion of the post than the caret position A second waveform block having a fade-in area is taken out, the second waveform data is inserted between the first waveform block and the second waveform block, and cross-fade connection is made in the fade-out area and the fade-in area, respectively. Thus, based on the comparison, a step of newly generating one continuous waveform data composed of the first waveform block, the second waveform data, and the second waveform block, the tail length is the paste waveform data. The first waveform block including a portion preceding the caret position and having a fade-out area in the section after the rear end thereof is extracted from all the sections of the first waveform data. By crossfading the front end of the second waveform data to the fadeout area of the A step of newly generating a single continuous waveform data formed by said first waveform block second waveform data, and for the execution.
Thus, by arbitrarily designating the caret position, it is possible to arbitrarily set the pasting start position of the second waveform data. In this case, the tail length indicating the length of the section after the designated caret position, The length of the second waveform data is compared, and based on this comparison, when the tail length is longer than the length of the second waveform data, the second waveform data is inserted between the first waveform block and the second waveform block. When waveform data is inserted and crossfading is performed on both the front and rear ends of the second waveform data, and the tail length is shorter than the paste waveform data length, the first waveform block fades out. The editing operation of cross-fading the front end of the second waveform data to the area is automatically performed. Therefore, the user can easily edit the waveform data having a good musical connection without performing complicated editing work.
According to a fifth aspect of the present invention, there is provided a waveform editing program according to the present invention, wherein a first waveform data to be edited is acquired in a computer, a second waveform data to be pasted is acquired, and a first operation is performed according to a user operation. Based on the comparison, the step of designating a desired edit target range in the data, the step of comparing the length of the designated edit target range in the first waveform data with the length of the second waveform data, If the length of the second waveform data is equal to the length of the editing target range, from the first waveform entire section of the data, with a fade-out area at its rear subsequent sections together including a portion which precedes the editing target range is taken out of the first waveform blocks, have a fade-in area at its front end a previous interval with including a portion later than the editing target range The second waveform block is taken out, the second waveform data is inserted between the first waveform block and the second waveform block, and crossfade connection is performed in the fade-out region and the fade-in region, respectively. A step of newly generating one continuous waveform data composed of one waveform block, the second waveform data, and the second waveform block; and based on the comparison, the length of the second waveform data is the range to be edited The editing target range is changed to a range having a length equal to the length of the second waveform data, and includes a portion preceding the changed editing target range and after the trailing end. section is taken out the first waveform block having a fade-out area of the front end previously with including a portion later than edited range mentioned above change Removed second waveform block having a fade-in area in the section, the first waveform block and said inserting said second waveform data fadeout region and the fade-in area and the cross-fade, respectively between the second waveform block By connecting, a step of newly generating one continuous waveform data composed of the first waveform block, the second waveform data, and the second waveform block, and based on the comparison, When the length is larger than the length of the editing target range, a portion corresponding to the length of the specified editing target range is extracted from the second waveform data as third waveform data, and the specified editing target range is included in the specified editing target range. A first waveform block including a preceding portion and having a fade-out area in a section after the rear end thereof is taken out and The second waveform block having a fade-in area at its front end a previous interval with including a portion later than edited range was taken out, the third waveform data between the first waveform block and the second waveform block One continuous waveform data composed of the first waveform block, the third waveform data, and the second waveform block is newly created by inserting and cross-fading the fade-out region and the fade-in region. And a generating step.
Thus, by arbitrarily designating a desired edit target range in the first waveform data, it is possible to arbitrarily set the pasting range of the second waveform data with respect to the first waveform data. The length of the edit target range is compared with the length of the second waveform data, and based on this comparison, the designated edit target range is determined according to the magnitude relationship between the length of the second waveform data and the length of the edit target range. Editing such as changing to a range having a length equal to the length of the second waveform data, or extracting a portion corresponding to the length of the designated editing target range from the second waveform data as third waveform data Work is done automatically. Therefore, the user can easily edit the waveform data having a good musical connection without performing complicated editing work.

  The present invention can be implemented not only as an invention of a program of a processor such as a computer or a DSP, but also in the form of a storage medium storing such a program. The present invention can also be configured and implemented as an invention of a waveform editing apparatus that executes waveform editing using such a program.

  According to the present invention, since the appropriate waveform editing according to the editing mode and editing conditions is automatically executed, the user can easily obtain the most appropriate editing result without newly performing troublesome editing work. There is an excellent effect that can be done.

  Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

  FIG. 1 is a hardware configuration block diagram showing the overall configuration of a waveform editing apparatus to which a waveform editing program according to the present invention is applied. The hardware configuration example of the waveform editing apparatus shown here is configured using a computer, and a GUI (graphic user interface) is used for waveform editing in the waveform editing apparatus. Control processing for editing waveform data in accordance with various operations (cut operation, paste operation, etc.) on the waveform data displayed on the display unit 4 such as a display is a predetermined control for the computer to realize the GUI. This is implemented by executing a program (see FIG. 2 or FIGS. 4 to 6 described later). Of course, these control processes are not limited to the form of computer software, but can also be implemented in the form of a microprogram processed by a DSP (digital signal processor), and are not limited to this form of program. You may implement in the form of the dedicated hardware apparatus comprised including the discrete circuit or the integrated circuit or the large-scale integrated circuit.

  The waveform editing apparatus shown in this embodiment is controlled by a microcomputer comprising a microprocessor unit (CPU) 1 and a memory 2 (ROM, RAM, etc.). The CPU 1 controls the operation of the entire waveform editing apparatus. The CPU 1 is connected to the memory 2, the operation unit 3, the display unit 4, the waveform input / output interface (I / F) 5, the other input / output interface (I / F) 6, and the external storage device via the data and address bus 1D. 7 are connected to each other. The memory 2 stores various programs executed by the CPU 1 and various data, or temporarily stores various data generated when the CPU 1 executes a predetermined program, a program currently being executed and related items. It is used as a buffer memory for storing data to be stored. A predetermined address area of the memory 2 is assigned to each function and used as a register, a flag, a table, a buffer memory, or the like.

  The operation unit 3 operates waveform data (see FIGS. 3 and 7 to 10 described later) displayed on the display unit 4 as a GUI (graphic user interface), or directly edits various editing parameters. It is an operator used for inputting. For example, a numeric keypad for inputting numeric data, a keyboard for inputting character data, a pointing device such as a mouse for operating a pointer or cursor displayed on the display unit 4, and the like. In addition to this, an operator such as a “control (CTRL) key” that realizes a predetermined editing function by being operated simultaneously with a predetermined key is included. The display unit 4 is a display composed of, for example, a liquid crystal display panel (LCD) or a CRT, and displays waveform data to be edited, waveform data stored in a buffer area (buffer memory), and the like in a predetermined display mode. Of course, editing parameters, the control state of the CPU 1, and the like can also be displayed. The user can edit the waveform data by operating the waveform data displayed on the display unit 4 using a mouse or the like.

  The waveform input / output interface 5 includes a waveform input unit 5a and a waveform output unit 5b. The waveform input unit 5a acquires waveform data from an external device (not shown) connected to the waveform editing apparatus. When the waveform data is an analog signal, the waveform input unit 5a acquires the waveform data as it is after being converted into a digital signal (sampling waveform data) and when the waveform data is a digital signal. The waveform output unit 5b is for supplying waveform data to an external device (not shown) connected to the waveform editing apparatus, and outputs the waveform data to the external device or the like after conversion into an analog signal or as a digital signal. . The other input / output interface 6 is connected to a wired or wireless communication network such as a LAN, the Internet, or a telephone line, and is connected to a server computer (not shown) or the like via the communication network. Is an interface for fetching various data such as a control program or waveform data from the waveform editing apparatus. That is, when a control program, waveform data, or the like is not stored in the memory 2, the external storage device 7, or the like, it is used for downloading the control program, waveform data, or the like from the server computer. These other input / output interfaces 6 may be both wired or wireless and may include both. The external storage device 7 stores various control programs executed by the CPU 1 and waveform data. Of course, this external storage device is not limited to a hard disk (HD), but a variety of removable disks such as a flexible disk (FD), a compact disk (CD-ROM), a magneto-optical disk (MO), or a DVD (Digital Versatile Disk). It may be a storage device using an external storage medium in the form.

  The above-described waveform editing device is not limited to one in which the operation unit 3, the display unit 4, the external storage device 7 and the like are built in one device body, but each is configured separately, and communication means such as various interfaces and various networks. Needless to say, the apparatus may be configured to connect the respective devices using the. Furthermore, the apparatus to which the waveform editing program according to the present invention is applied is not limited to the computer as described above, and may be applied to any form of apparatus / equipment such as a portable communication terminal, a karaoke apparatus, or a game apparatus. .

  In the waveform editing apparatus shown in FIG. 1, the waveform data can be edited by operating the waveform (also referred to as a display waveform for convenience) displayed on the display unit 4 based on the waveform data to be edited. it can. Control processing for editing waveform data using such a GUI (graphic user interface) is performed by the CPU 1 shown in FIG. 1 executing a predetermined control program corresponding to each operation by the user. First, “cut processing” executed when a cutting operation is performed will be described with reference to FIG. FIG. 2 is a flowchart showing an example of “cut processing”. Hereinafter, the editing processing operation when the cutting operation is performed will be described according to the flowchart shown in FIG.

  First, in step S1, waveform data to be edited is read, and the read waveform data is displayed on the display unit 4. That is, the waveform data designated as the editing target by the user is selectively read out from a large number of waveform data stored in the external storage device 7, and a predetermined display form is displayed on the display unit 4 based on the read waveform data. (See FIG. 3 described later) The waveform is displayed. In step S2, various editing conditions are set. As editing conditions to be set, for example, the editing target range that is the range to be cut (deleted) in the waveform data, and the waveform data before and after the remaining editing target range that are generated when a part of the waveform data is cut are smoothly connected to each other For example, there is a crossfade area value that is a range in which crossfade connection is performed. Such editing conditions correspond to the case where the user operates the pointer P (or cursor) moving on the display unit 4 using a pointing device such as a mouse and clicks a desired position of the display waveform, or corresponds to the operation unit 3. It can be set by operating one of the controls. That is, for example, by clicking two desired points on the display waveform, the edit target range can be dragged between two desired points on the display waveform, or a crossfade area value can be set, or a numeric keypad or keyboard It can also be set by directly inputting a numerical value using, for example.

  In step S3, it is determined whether or not a cutting operation has been performed. For example, when the “control (CTRL) key” and the “X key” on the keyboard are simultaneously pressed by the user, it is determined that the cutting operation has been performed. If it is determined that the cutting operation has not been performed (NO in step S3), the cutting process is terminated because the cutting operation has not been performed and another operation has been performed. On the other hand, when it is determined that the cutting operation has been performed (step S3), the waveform data corresponding to the editing target range set in step S2 is stored in the buffer area of the memory 2 (step S4). In step S5, it is determined whether the size of the head portion (head length) or the size of the tail portion (tail length) is shorter than the crossfade region value set in step S2. Here, when a part of the waveform data is designated as the editing target range, the waveform data is divided at the editing target range, and the front waveform data (waveform) from the top of the waveform to the editing target range is divided. Block) is referred to as a head portion, and the waveform data at the rear of the waveform data from the editing target range to the waveform end portion is referred to as a tail portion (see FIG. 3).

  When the size of the head portion or the tail portion is smaller than the crossfade region value (YES in step S5), the smaller one of the head or tail size is set as the crossfade substitute value ( Step S6). In step S7, the head portion and tail portion are cross-fade connected in accordance with the set cross-fade substitute value, and the waveforms are added and synthesized. When the size of the head part or the size of the tail part is not smaller than the crossfade area value (NO in step S5), the head part and the tail part are crossfade according to the crossfade area value set in step S2. Connect and combine the waveforms (step S8). By doing so, continuous waveform data in which a part of the waveform data to be edited is deleted is generated. It should be noted that any known method may be used for cross-fade connection, which is a technique for smoothly connecting a plurality of waveforms such as the head part and tail part.

  Here, the cutting process will be specifically described with reference to FIG. Each figure shown in FIG. 3 is a conceptual diagram for explaining the details of the cutting process for each case. FIG. 3A is a diagram showing a case where the size of the head portion or the size of the tail portion is larger than or equal to the crossfade region value, and FIG. 3B is a diagram where the size of the head portion or the tail portion is larger than the crossfade region value. FIG. In each of these diagrams, the upper diagram shows an example of a display waveform having a function as a GUI (graphic user interface) displayed on the display unit 4 based on the waveform data, and the middle diagram is shown in FIG. It is the figure which showed the waveform data processed for cross-fade connection, and the lower figure is the figure which showed the final waveform data formed after a process. However, here, for convenience of illustration, an example is shown in which the waveform is displayed in a rectangular box shape as a display form of the waveform data displayed on the display unit 4, but the waveform may be displayed so that the envelope shape of the waveform appears. Needless to say.

  When the waveform data is read, the entire waveform (or part of the waveform) is displayed on the display unit 4. Click the desired two points on the displayed waveform, the edit target range is set by dragging between the two desired points, and the crossfade area value is set in the upper part of FIG. 3A. As shown, an edit target range and a crossfade area are displayed. In addition, the waveform before the editing target range in the entire waveform is displayed as a head portion, and the waveform after the editing target range is displayed as a tail portion. The size of the head portion is the head length, and the size of the tail portion is the tail length. If the head length or tail length is greater than or equal to the crossfade area value, as shown in the middle and lower parts of FIG. Additive synthesis while fading in / out. In this way, continuous waveform data in which a part of the waveform data to be edited is deleted is generated. The final size of the entire waveform data generated in the cut processing is obtained by subtracting the edit target range and the crossfade area value from the size of the entire waveform data before editing.

  As shown in the upper part of FIG. 3B, when the head length or tail length is smaller than the crossfade area value (here, an example in which the head length is smaller than the crossfade area value is shown), the head length or tail length is Addition synthesis is performed using the smallest length. That is, the smallest length of the head length or tail length is used as the crossfade substitute value, and the head portion and tail portion are faded in / fade out by the crossfade substitute value as shown in the middle and lower parts of FIG. 3B. Additive synthesis. However, in this case, if there is no head length or tail length, only one of the tail portion and the head portion exists as waveform data to be crossfade connected, so addition synthesis by crossfade connection is performed. You don't have to do it. The final size of the entire waveform data generated in the cutting process is obtained by subtracting the range to be edited and the cross-fade substitute value from the size of the entire waveform data before editing.

  Next, “paste processing” executed when a paste operation is performed will be described with reference to FIGS. FIG. 4 is a flowchart showing an example of “paste processing”. FIG. 5 is a flowchart showing an example of “caret processing” executed when caret designation is performed in the “paste processing”. FIG. 6 is a flowchart showing an example of “area processing” executed when an area is designated in the “paste processing”. Hereinafter, the editing process operation when the paste operation is performed will be described according to the flowcharts shown in FIGS.

  As shown in FIG. 4, also in the “paste processing”, the waveform data to be edited is first read, and the read waveform data is displayed on the display unit 4 (step S11). Then, the desired waveform data is stored in the buffer area of the memory 2 as the waveform data to be pasted (step S12). In this case, the waveform data stored in the buffer area is arbitrarily selected from a copy of a part of the read waveform data to be edited or a large number of waveform data prepared in advance in the external storage device 7 or the like. There are things. In step S13, various editing conditions are set. The editing conditions are the same as those already described in the above “cut processing”. In step S14, it is determined whether or not a paste operation has been performed. For example, when the “control (CTRL) key” and “V key” on the keyboard are simultaneously pressed by the user, it is determined that the paste operation has been performed. If it is determined that the paste operation has not been performed (NO in step S14), the paste process is terminated because the paste operation has not been performed and another operation has been performed.

  On the other hand, if it is determined that the paste process has been performed (YES in step S14), it is determined whether or not “caret designation” has been performed as a method for designating the edit target range in step S13 (step S15). Here, “caret designation” is a method of designating a range to be edited by designating one point on the display waveform (corresponding to one sampling point of waveform data) by one click operation of the mouse. There is “area designation” as a designation method different from this “caret designation”, and this “area designation” means a range over two points (two sampling points) on the display waveform by two clicks of the mouse. This is a method for designating a range to be edited by batch designation. If it is determined that the “caret designation” described above has been performed (YES in step S15), “caret processing” described in FIG. 5 described later is executed (step S16). On the other hand, if it is determined that the “area designation” described above has been performed (NO in step S15), “area processing” shown in FIG. 6 described later is executed (step S17). In step S18, the waveform data to be edited that has been processed by the above processes and the waveform data to be pasted are added and synthesized by cross-fade connection. By doing so, it is possible to generate continuous waveform data in which part of the waveform data to be edited is replaced with pasted waveform data.

  When “caret designation” has been performed as a method for designating the editing target range in the “paste processing” described above (see step S16 in FIG. 4), the “caret processing” shown in FIG. 5 is executed. In the caret processing shown in FIG. 5, the size of the tail portion (tail length), which is the waveform data at the rear of the displayed waveform data from the position designated by the caret, is the size of the waveform data stored in the buffer area (buffer It is determined whether it is smaller than (waveform length) (step S21). If the tail length is smaller than the buffer waveform length (YES in step S21), the portion of the displayed waveform data fades out from the position designated by the caret to the crossfade area from the end of the head portion that is the waveform data in the front portion. (Step S22). Further, the cross fade area is faded in from the beginning of the buffer waveform (step S23). On the other hand, if the tail length is longer than the buffer waveform length (NO in step S21), the cross fade area is faded out from the end of the head portion of the waveform to be edited (step S24). In addition, the cross fade area is faded in from the beginning of the buffer waveform (step S25), and the cross fade area is faded out from the end of the buffer waveform (step S26). Further, the position after the position corresponding to the buffer waveform length from the caret position is newly set as the tail part, and the cross fade area is faded in from the head part of the new tail part (step S27). Details of the caret processing will be described with reference to FIG.

  On the other hand, in the above-described “paste processing”, if “area specification” has been made as a method for specifying the editing target range (see step S17 in FIG. 4), the “area processing” shown in FIG. 6 is executed. . In the area processing shown in FIG. 6, it is first determined whether or not the size of the waveform data (buffer waveform length) stored in the buffer area is larger than the editing target range (editing range length) (step S31). If it is determined that the buffer waveform length is longer than the edit range length (YES in step S31), it is determined whether an option operation has been performed (step S42). For example, when a paste operation is performed by the user, in addition to the “control (CTRL) key” and “V key” on the keyboard, the “SHIFT key” is pressed at the same time. It is determined that the operation has been performed. If it is determined that the option operation has not been performed (NO in step S42), the process jumps to the process in step S32. If it is determined that the option operation has been performed (YES in step S42), the cross fade area is faded out from the end of the head portion (step S43). Also, the position at the interval of the editing target range from the end of the buffer waveform is set as the start position, the cross fade area is faded in from the start position (step S44), and the cross fade area from the end of the buffer waveform is set. Is faded out (step S45). Further, the cross fade area is faded in from the head part of the tail part (step S46).

  If it is determined in step S31 that the buffer waveform length is not greater than the edit range length (NO in step S31), or if it is determined in step S42 that no option operation has been performed (NO in step S42). Then, it is determined whether or not the edit target range does not include the head of the edit target waveform (step S32). If it is determined that the edit target range does not include the beginning of the edit target waveform (YES in step S32), the cross fade area is faded out from the end of the head portion (step S33). Further, the cross fade area is faded in from the beginning of the buffer waveform (step S34). On the other hand, when it is determined that the editing target range includes the head of the editing target waveform (YES in step S32), the waveform leading end is set to the position corresponding to the editing target range of the editing target waveform (step S35). The previous head is cleared (silenced) (step S36). In step S37, it is determined whether the edit target range does not include the end of the edit target waveform. If it is determined that the editing target range does not include the end of the editing target waveform (YES in step S37), the end of the buffer waveform is the position corresponding to the editing target range, and the cross fade area is faded out from the end. (Step S38). Further, the cross fade area is faded in from the head of the tail part of the waveform to be edited (step S39). On the other hand, if it is determined that the edit target range includes the end of the edit target waveform (NO in step S37), the waveform end is set to the position corresponding to the edit target range of the buffer waveform (step S40), and the end of the waveform is set. The rear tail portion is cleared (silenced) (step S41). Details of such area processing will be described with reference to FIG.

  Here, the paste process will be specifically described with reference to FIG. Each figure shown in FIG. 7 is a conceptual diagram for explaining the details of the paste process for each case. Here, FIGS. 7A to 7G will be described separately according to editing conditions. Also in this case, as in the case of the cut process, when the waveform data to be edited is read, the entire waveform (or part of the waveform) is displayed on the display unit 4.

  7A or 7B, the caret position can be set by clicking one desired point on the displayed waveform, and the crossfade area value can be set by dragging between the two desired points. Along with the setting, the caret position and the cross-fade region are displayed on the display unit 4, respectively. When the size of the tail portion after the caret position (tail length) is larger than or equal to the size of the buffer waveform (buffer waveform length), as shown in the middle and lower portions of FIG. Up to the waveform length is set as the edit target range, and the head and tail portions before and after that and the buffer waveform are added and synthesized while fading in / fade out by the amount corresponding to the crossfade area value. In this way, continuous waveform data in which a part of the waveform data to be edited is replaced with the buffer waveform is generated. In this case, the final size of the entire waveform data generated is the same as the size of the entire waveform data before editing. On the other hand, when the tail length is smaller than the buffer waveform length, as shown in the middle and lower parts of FIG. 7B, the head part and the buffer waveform are added and synthesized while fading in / fade out by the amount of the crossfade area value. The final size of the entire waveform data generated in this case is larger than the size of the entire waveform data before editing by the amount obtained by subtracting the tail length from the buffer waveform length.

  As shown in FIGS. 7C to 7G, when two desired points are clicked on the displayed waveform, the edit target range is displayed instead of the caret position as described above. When the edit target range does not include the beginning or end of the edit target waveform and the buffer waveform length is equal to or smaller than the size of the edit target range (edit range length), the middle and lower stages of FIG. 7C or FIG. 7D are shown. As described above, the head and tail portions before and after the editing target range and the buffer waveform are added and synthesized while fading in / fade out by the amount of the crossfade area value. However, in this case, the edit range length is changed to the buffer waveform length, and the tail length is changed accordingly. In this way, continuous waveform data in which a part of the waveform data to be edited is replaced with the buffer waveform is generated. In this case, the final size of the entire waveform data generated is the same as the size of the entire waveform data before editing.

  Further, when the editing target range does not include the beginning or end of the editing target waveform and the buffer waveform length is larger than the size of the editing target range (editing range length), as shown in the middle and lower parts of FIG. The head portion, tail portion, and buffer waveform before and after the editing target range are added and combined while fading in / fade out by the amount of the crossfade area value. In this case, however, the buffer waveform length is changed to the edit range length. Paste whether the range from the beginning of the original buffer waveform to the edit range length is used as a new buffer waveform or the range from the end of the original buffer waveform to the edit range length is used as a new buffer waveform It is determined according to whether or not the option key is operated during operation. In the “paste processing” described above, the “SHIFT key” is used as an option key, and when the “SHIFT key” is not operated at the same time, from the beginning of the original buffer waveform to the edit range length An example is shown in which the range from the end of the original buffer waveform to the edit range length is used as the new buffer waveform when these ranges are used as a new buffer waveform.

  When the editing target range includes the beginning of the editing target waveform, as shown in the middle and lower parts of FIG. 7F, the tail part is faded in by the value of the crossfade area, and the buffer waveform is added and synthesized while only fading out. To do. At this time, the position corresponding to the editing target range from the end of the editing target waveform is set as the leading end of the waveform, and the portion before the leading end of the waveform is cleared (silenced). On the other hand, when the editing target range includes the end of the editing target waveform, as shown in the middle and lower parts of FIG. 7G, the head part is faded out by the value of the crossfade area, and the buffer waveform is only faded in. Additive synthesis. At this time, the position corresponding to the edit target range from the beginning of the edit target waveform is set as the waveform end, and the portion after the end of the waveform is cleared (silenced).

  Examples of the editing mode for the waveform data displayed on the display unit 4 include insert, mixing, and clear, in addition to cut and paste. “Insert” is an editing mode in which a buffer waveform is inserted at a desired position of waveform data to be edited. “Mixing” is an editing mode in which the waveform is mixed by superimposing the buffer waveform at a desired position of the waveform data to be edited. “Clear” is an editing mode in which the amplitude of a part of the waveform data to be edited is set to zero to silence the part. An outline of processing when an editing operation according to the editing mode such as insert, mixing, and clear is performed will be briefly described with reference to FIGS.

  FIG. 8 is a conceptual diagram for explaining the details of the insert process for each case. When caret designation is performed in the insert process, as shown in FIG. 8A, a buffer waveform is inserted between the head portion and the tail portion, and the cross-fade region values are respectively set for these head portion, tail portion, and buffer waveform. Add and synthesize while fading in / out. When the area is specified in the insert process and the editing target range does not include the beginning or end of the editing target waveform, as shown in FIG. 8B or FIG. A buffer waveform is inserted between the editing target range, and when specifying caret by optional operation, a buffer waveform is inserted between the editing target range and the tail part, and the head part, tail part, and buffer waveform are crossed respectively. Addition synthesis is performed while fading in / out the fade area value.

When the editing target range includes the beginning of the editing target waveform in the insert processing, as shown in FIG. 8D, a buffer waveform is inserted at the tip of the tail part, and the tail part and the buffer waveform are respectively divided by the crossfade area value. Only add and synthesize while fading in / out. When the editing target range includes the end of the editing target waveform in the insert processing, as shown in FIG. 8E, a buffer waveform is inserted at the rear end of the tail part, and the tail part and the buffer waveform are respectively set to the crossfade region values. Add and synthesize while fading in / out.
The overall size of the final waveform data generated in the case of the insert processing as described above is larger by the buffer waveform excluding the crossfade region than the size of the waveform data before editing.

  FIG. 9 is a conceptual diagram for explaining the details of the mixing process for each case. When caret designation is performed in the mixing process, as shown in FIGS. 9A and 9B, the original waveform data is superimposed while the buffer waveform is superimposed on the caret position, and the buffer waveform is faded in / out by the crossfade area value. To mix. When the area is specified in the mixing process, if the editing target range does not include the beginning or end of the editing target waveform and the buffer waveform length is equal to or smaller than the size of the editing target range (editing range length), As shown in FIG. 9C or 9D, the head and tail portions before and after the edit target range and the buffer waveform are mixed while fading in / fade out by the amount of the crossfade region value.

When the area is specified in the mixing process, the editing target range does not include the beginning or end of the editing target waveform, and the buffer waveform length is larger than the size of the editing target range (editing range length). As shown in 9E, the head and tail portions before and after the editing target range and the buffer waveform are mixed while fading in and out by the amount of the crossfade region value. However, the buffer waveform size is the range from the beginning of the original buffer waveform to the edit range length in normal operation, and the range from the end of the original buffer waveform to the edit range length in optional operation. To change. When the editing target range includes the beginning of the editing target waveform, as shown in FIG. 9F, mixing is performed while fading out the buffer waveform. On the other hand, when the edit target range includes the end of the edit target waveform, as shown in FIG. 9G, mixing is performed while fading in the buffer waveform.
The overall size of the final waveform data generated in the case of the mixing process as described above is generally the same as the size of the waveform data before editing. However, in the case shown in FIG. 9B, the waveform data is larger than that before editing.

  FIG. 10 is a conceptual diagram for explaining the details of the clear process for each case. In the case of clear processing, since the range to be cleared must be determined by position designation, it is necessary to perform area designation instead of caret designation. When the edit target range does not include the beginning or end of the edit target waveform in the clear process, as shown in FIG. 10A, after clearing the edit target range, for example, by setting the amplitude level to zero, The head part fades out by the crossfade area value, and the tail part fades in by the crossfade area value, and the addition synthesis is performed. When the edit target range includes the beginning or end of the edit target waveform in the clear process, as shown in FIG. 10B or 10C, after the edit target range is cleared, only the head portion fades out by the crossfade area value. Alternatively, only the tail portion is faded in by the value of the crossfade region value, and addition synthesis is performed.

Needless to say, the method for specifying the editing target range in the above-described “cut processing” is not limited to “area specification”, but may be “caret specification”. In the case of “caret designation”, for example, a range from one point on the display waveform designated by one click operation of the mouse to a predetermined range determined in advance may be set as the editing target range.
Note that the editing modes such as cut, paste, insert, mixing, and clear described above are examples, and it goes without saying that there may be other editing modes. Further, the editing operation corresponding to each editing mode is not limited to the above. Furthermore, as a method of setting such an editing mode, a method of setting by a combination of a “control (CTRL) key” on the keyboard and a predetermined character key has been shown, but the present invention is not limited to this. "," Paste switch "," insert switch "," mixing switch "," clear switch ", etc., the editing mode may be set according to the operation of a dedicated operator.

1 is a hardware configuration block diagram showing an overall configuration of a waveform editing apparatus to which a waveform editing program according to the present invention is applied. It is the flowchart which showed one Example of the cutting process. It is a conceptual diagram for demonstrating the detail about a cut process. It is the flowchart which showed one Example of the paste process. It is the flowchart which showed one Example of the caret process. It is the flowchart which showed one Example of the area process. It is a conceptual diagram for demonstrating the detail about a paste process. It is a conceptual diagram for demonstrating the detail about an insert process. It is a conceptual diagram for demonstrating the detail about a mixing process. It is a conceptual diagram for demonstrating the detail about a clear process.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... CPU, 2 ... Memory, 3 ... Operation part, 4 ... Display part, 5 ... Waveform input / output interface, 5a ... Waveform input part, 5b ... Waveform output part, 6 ... Other interface, 7 ... External storage device, 1D ... Communication bus

Claims (6)

On the computer,
Acquiring waveform data; and
In accordance with a user operation, a step of variably setting a desired cut target range and the length of the crossfade region adjacent to the front and back of the range ,
Subsequent all the region of the waveform data the acquired based on the cut target range the set, the first waveform block preceding the cut target range, the second waveform block corresponding to the cut target range, to the cut target range Dividing into three waveform blocks comprising a third waveform block;
Comparing the length of the first and third waveform blocks with the length of the set crossfade region;
Based on the comparison, when the length of the first or third waveform block is shorter than the length of the set crossfade region, the length of the crossfade region is set to be shorter than that of the first or third block. Automatically adjusting to fit the length, crossfading the first and third waveform blocks to each other according to the adjusted crossfade region, and newly generating one continuous waveform data; ,
Based on the comparison, if the lengths of the first and third waveform blocks are not shorter than the length of the set crossfade region, the first and third waveform blocks are connected to each other according to the set crossfade region. Cross-fade to each other and newly generating one continuous waveform data;
Waveform editing program for running . Means for acquiring waveform data;
In accordance with a user operation, means for variably setting a desired cut target range and the length of the crossfade area adjacent to the front and back thereof ,
Subsequent full segment of the waveform data the acquired based on the cutting target range the set, the first waveform block preceding the cut target range, the second waveform block corresponding to the cut target range, to the cut target range Means for dividing into three waveform blocks comprising a third waveform block;
Means for comparing the length of the first and third waveform blocks with the length of the set crossfade region;
Based on the comparison, when the length of the first or third waveform block is shorter than the length of the set crossfade region, the length of the crossfade region is set to be shorter than that of the first or third block. Means for automatically adjusting to fit the length , cross-fading the first and third waveform blocks to each other according to the adjusted cross-fade region, and newly generating one continuous waveform data; ,
Based on the comparison, if the lengths of the first and third waveform blocks are not shorter than the length of the set crossfade region, the first and third waveform blocks are connected to each other according to the set crossfade region. A waveform editing apparatus comprising: means for cross-fading to each other and newly generating one continuous waveform data . On the computer,
Obtaining first waveform data to be edited;
Obtaining second waveform data to be pasted;
Instructing a desired caret position in the first waveform data according to a user operation;
Comparing the tail length indicating the length of the section after the indicated caret position in the first waveform data with the length of the second waveform data;
Based on the comparison, if the tail length is longer than the length of said second waveform data, from said first waveform entire section of the data, fade-out area at its rear subsequent sections together including a portion preceding the caret position is taken out of the first waveform block having said removed second waveform block having a fade-in area at its front end a previous interval with including a portion later than caret position, said first waveform block and the second waveform block The second waveform data is inserted in between and the fade-out area and the fade-in area are cross-fade connected to each other, thereby forming the first waveform block, the second waveform data, and the second waveform block. A step of newly generating one continuous waveform data;
Based on the comparison, if the tail length is shorter than the length of the paste waveform data from said first waveform entire section of the data, a fade-out area at its rear subsequent sections together including a portion preceding the caret position The first waveform block is taken out, and the front end of the second waveform data is cross-fade connected to the fade-out area of the first waveform block, so that one of the first waveform block and the second waveform data is Newly generating continuous waveform data; and
Waveform editing program for running. Means for acquiring first waveform data to be edited;
Means for acquiring second waveform data to be pasted;
Means for instructing a desired caret position in the first waveform data according to a user operation;
Means for comparing a tail length indicating a length of a section after the designated caret position in the first waveform data with a length of the second waveform data;
Based on the comparison, if the tail length is longer than the length of said second waveform data, from said first waveform entire section of the data, fade-out area at its rear subsequent sections together including a portion preceding the caret position is taken out of the first waveform block having said removed second waveform block having a fade-in area at its front end a previous interval with including a portion later than caret position, said first waveform block and the second waveform block The second waveform data is inserted in between and the fade-out area and the fade-in area are cross-fade connected to each other, thereby forming the first waveform block, the second waveform data, and the second waveform block. Means for newly generating one continuous waveform data;
Based on the comparison, if the tail length is shorter than the length of the paste waveform data from said first waveform entire section of the data, a fade-out area at its rear subsequent sections together including a portion preceding the caret position The first waveform block is taken out, and the front end of the second waveform data is cross-fade connected to the fade-out area of the first waveform block, so that one of the first waveform block and the second waveform data is Means for newly generating continuous waveform data;
A waveform editing apparatus comprising: On the computer,
Obtaining first waveform data to be edited;
Obtaining second waveform data to be pasted;
Instructing a desired edit target range in the first waveform data according to a user operation;
Comparing the length of the designated editing target range in the first waveform data with the length of the second waveform data;
Based on the comparison, if the length of the second waveform data is equal to the length of the editing target range, from the first waveform entire section of data, the rear end after together includes a portion which precedes the editing target range A first waveform block having a fade-out area in a section of the first waveform block, a second waveform block including a portion after the edit target range and having a fade-in area in the section before the front end thereof , and the first waveform block The second waveform data is inserted between the first waveform block, the second waveform data, and the second waveform data, and the fade-out region and the fade-in region are respectively crossfade-connected. Newly generating one continuous waveform data consisting of two waveform blocks;
Based on the comparison, when the length of the second waveform data is smaller than the length of the editing target range, the designated editing target range is changed to a range having a length equal to the length of the second waveform data. , it is taken out of the first waveform block having a fade-out area at its rear subsequent sections together including a portion preceding the edited ranges the change, the front end previously with including a portion later than edited range mentioned above change The second waveform block having a fade-in area in the interval is taken out, the second waveform data is inserted between the first waveform block and the second waveform block, and the fade-out area and the fade-in area cross each other. By making a fade connection, one continuous waveform data consisting of the first waveform block, the second waveform data, and the second waveform block is obtained. The method comprising the steps of: generating a new,
Based on the comparison, when the length of the second waveform data is larger than the length of the editing target range, a portion corresponding to the length of the instructed editing target range is determined from the second waveform data as the third waveform data. as taken out, the taken out first waveform block having a fade-out area at its rear subsequent sections together including a portion preceding the edited range indicated finger includes a portion later than the indicated edit range removed second waveform block having a fade-in area at its front end a previous interval with the said fade-out area and the fade-in area by inserting the third waveform data between a first waveform block and the second waveform block And the crossfade connection, the first waveform block, the third waveform data, and the second waveform block A step of generating a new one continuous waveform data,
Waveform editing program for running. Means for acquiring first waveform data to be edited;
Means for acquiring second waveform data to be pasted;
Means for instructing a desired edit target range in the first waveform data in accordance with a user operation;
Means for comparing the length of the designated editing target range in the first waveform data with the length of the second waveform data;
Based on the comparison, if the length of the second waveform data is equal to the length of the editing target range, from the first waveform entire section of data, the rear end after together includes a portion which precedes the editing target range A first waveform block having a fade-out area in a section of the first waveform block, a second waveform block including a portion after the edit target range and having a fade-in area in the section before the front end thereof , and the first waveform block The second waveform data is inserted between the first waveform block, the second waveform data, and the second waveform data, and the fade-out region and the fade-in region are respectively crossfade-connected. Means for newly generating one continuous waveform data consisting of two waveform blocks;
Based on the comparison, when the length of the second waveform data is smaller than the length of the editing target range, the designated editing target range is changed to a range having a length equal to the length of the second waveform data. , it is taken out of the first waveform block having a fade-out area at its rear subsequent sections together including a portion preceding the edited ranges the change, the front end previously with including a portion later than edited range mentioned above change The second waveform block having a fade-in area in the interval is taken out, the second waveform data is inserted between the first waveform block and the second waveform block, and the fade-out area and the fade-in area cross each other. By making a fade connection, one continuous waveform data consisting of the first waveform block, the second waveform data, and the second waveform block is obtained. And means for generating a new,
Based on the comparison, when the length of the second waveform data is larger than the length of the editing target range, a portion corresponding to the length of the instructed editing target range is determined from the second waveform data as the third waveform data. as taken out, the taken out first waveform block having a fade-out area at its rear subsequent sections together including a portion preceding the edited range indicated finger includes a portion later than the indicated edit range removed second waveform block having a fade-in area at its front end a previous interval with the said fade-out area and the fade-in area by inserting the third waveform data between a first waveform block and the second waveform block And the crossfade connection, the first waveform block, the third waveform data, and the second waveform block Means for generating a new one continuous waveform data,
A waveform editing apparatus comprising:

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