JP4148091B2 - Parameter editing apparatus and program for realizing parameter editing method - Google Patents

Description

  The present invention relates to a parameter editing apparatus and a program for realizing a parameter editing method for editing various parameter values necessary for generating reverb.

  2. Description of the Related Art A parameter editing apparatus that edits various parameter values necessary for generating reverb is conventionally known.

  As such a parameter editing device, there is an apparatus that can edit a reverb send amount for each of a plurality of parts and display the edited reverb send amount in a bar graph (see, for example, Patent Document 1).

In addition, the total length of the change over time of the tone envelope obtained when reverb is applied to a tone with a certain characteristic is displayed in three dimensions (with amplitude, time, and frequency as each dimension), and the user displays the time length as a time axis. When the change is specified above, there is also one that changes the three-dimensional display in accordance with the change-specified time length.
JP-A-8-63152

  However, in the conventional parameter editing apparatus, the first parameter for which the value of the first scale on a certain axis is set, and the value of the second scale on the same axis that is extremely smaller than the first scale. When there is a second parameter to be set, and the second parameter is edited, the second scale is extremely small relative to the first scale, so the display is usually difficult to see, and the second parameter is edited. It was difficult.

  In order to solve this problem, it may be possible to enlarge the display. However, the operation for enlarging the display has to be performed separately from the parameter editing operation, which is troublesome.

  The present invention has been made paying attention to this point. The first parameter in which the value of the first scale on a certain axis is set, and the first parameter on the same axis that is extremely smaller than the first scale. A program for realizing a parameter editing apparatus and a parameter editing method capable of performing the editing operation of the second parameter very easily even when there is a second parameter for which a value of scale 2 is set The purpose is to provide.

In order to achieve the above object, a parameter editing apparatus according to claim 1, wherein the amplitude envelope of a wet musical sound obtained when a reverb generated based on a plurality of parameters is applied to a dry musical sound is expressed by a time axis and a frequency axis. And a display means for displaying on the three-dimensional plane each operation element for changing each setting value of the plurality of parameters, and displaying each operation element on the three-dimensional plane formed by the amplitude axis. An instruction / moving means for instructing and moving the instructed operator; and a changing means for changing a value of a parameter associated with the operator in accordance with movement of the operator by the instruction / moving means; has, on the parameter includes a first parameter time axis constituting the three-dimensional plane are displayed or set in the first scale, the first scale It includes a second parameter to be displayed or set in a small second scales remote display and setting unit, by the instruction-moving means, when the operating element corresponding to the second parameter is instructed The display means enlarges and displays the amplitude envelope in the three-dimensional region including the instructed operator by changing the display / setting unit of the time axis constituting the three-dimensional plane to the second scale. It is characterized by doing.

  In order to achieve the above object, the program according to claim 2 can be realized by a technical idea similar to that of claim 1.

According to the first or second aspect of the present invention, the operation corresponding to the second parameter displayed or set by the instruction / moving means on the second scale whose display / setting unit is smaller than the first scale. When the child is designated, the display / setting unit of the time axis constituting the three-dimensional plane is changed to the second scale, and the amplitude envelope in the three-dimensional region including the designated operator is enlarged and displayed. Therefore, the first parameter for which the value of the first scale on the time axis is set, and the second parameter for which the value of the second scale on the same axis that is extremely smaller than the first scale is set. Even if there is, the editing operation of the second parameter can be performed very easily.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a block diagram showing a schematic configuration of a parameter editing apparatus according to an embodiment of the present invention.

  As shown in the figure, the parameter editing apparatus according to the present embodiment includes an operator group 1 composed of a plurality of operators such as a character input keyboard, a pointing device such as a mouse, and various switches, A detection circuit 2 that detects the operation state of each operator, a CPU 3 that controls the entire apparatus, a ROM 4 that stores a control program executed by the CPU 3, various table data, and the like, music data, various input information, and calculation results RAM 5 for temporarily storing, various application programs including the control program, external storage device 6 for storing various music data, various data, and the like, and various information, for example, a liquid crystal display (LCD) and light emission Display device 7 provided with a diode (LED) and the like, and external MIDI (Musical Instrument Digital Interface) equipment A communication interface (I / F) 8 that transmits / receives data to / from the external control device 100, a sound source circuit 9 that converts the stored music data into a musical sound signal, and the sound source An effect circuit 10 for imparting various effects to the musical sound signal from the circuit 9 and the communication I / F 8, and a musical sound signal from the effect circuit 10 are converted into sound, for example, a DAC (Digital-to-Analog Converter) The sound system 11 includes an amplifier and a speaker.

  The components 2 to 10 are connected to each other via the bus 12, the external MIDI device 100 is connected to the communication I / F 8, the effect circuit 10 is connected to the sound source circuit 9, and the sound is supplied to the effect circuit 10. A system 11 is connected.

  The effect circuit 10 can generate a reverberation effect (reverb). The effect circuit 10 reads various parameters necessary for generating reverberation from the ROM 4 or RAM 5, generates reverb based on these parameters, and the generated reverb is input from the tone generator circuit 9 or the communication I / F. Signal processing based on the reverb generated on the input musical sound signal. Then, the tone signal after the reverb is applied, that is, after the signal processing is performed, is transmitted to the sound system 11. Hereinafter, a tone signal input to the effect circuit 10 from the sound source circuit 9 or the communication I / F, that is, a tone signal before reverb is added is referred to as “dry tone”, and a tone signal after the reverb is assigned is “ This is called “wet music”.

  Examples of the external storage device 6 include a flexible disk drive (FDD), a hard disk drive (HDD), a CD-ROM drive, and a magneto-optical disk (MO) drive. As described above, the external storage device 6 can also store a control program to be executed by the CPU 3. If the control program is not stored in the ROM 4, the control program is stored in the external storage device 6. By reading it into the RAM 5, it is possible to cause the CPU 3 to perform the same operation as when the control program is stored in the ROM 4. In this way, control programs can be easily added and upgraded.

  In the illustrated example, the external control device 100 is directly connected to the communication I / F 8. However, the communication I / F 8 is not limited to this, and for example, a server computer via a communication network such as a LAN (Local Area Network), the Internet, or a telephone line. May be connected. In this case, if the above programs and various parameters are not stored in the external storage device 6, the communication I / F 8 is used for downloading the programs and parameters from the server computer. A computer serving as a client (a parameter editing apparatus in the present embodiment) transmits a command requesting download of a program and parameters to the server computer via the communication I / F 8 and the communication network. The server computer receives this command and distributes the requested program or parameter to the computer via the communication network. The computer receives the program or parameter via the communication I / F 8 and receives the external storage device 6. Downloading is completed by accumulating in.

  As can be seen from the above configuration, the parameter editing apparatus according to the present embodiment is constructed on a general-purpose personal computer. However, the present invention is not limited to this, and only from the minimum elements that can implement the present invention. You may construct | assemble on the comprised dedicated apparatus.

  The parameter editing apparatus according to the present embodiment specifically targets various parameters necessary for generating reverb. Parameters required for reverb generation include reverb time, initial delay, decay, room size, diffusion, and high-pass filter (HPF) cut. Ten parameters of the off frequency, the low pass filter (LPF) cutoff frequency, the high ratio (Hi Ratio), the low ratio (Low Ratio), and the low frequency (Low Freq) are employed.

  The reverb time is a parameter that determines the reverberation time. The initial delay is a parameter that determines a delay time until reverb starts to be added to a musical sound. Decay is a parameter that determines the ratio (%) of the reverb time from the time when the envelope of the reverb impulse response rises to its maximum level until it decays. The room size is a parameter that corresponds to the size of the room, but in reality, the time from when the envelope of the reverb impulse response rises to the maximum becomes the maximum reverb time without changing the proportion of the reverb time. Is to change. The diffusion is a parameter that determines the degree (roughness) of the signal used for generating the reverb. The cut-off frequency of the high-pass filter is literally a parameter that determines the cut-off frequency of the high-pass filter used for reverb generation. The cut-off frequency of the low-pass filter is literally a parameter that determines the cut-off frequency of the low-pass filter used for reverb generation. The high ratio is a parameter for determining a ratio of changing from the reverb time set by the reverb time parameter to the envelope of the impulse response belonging to a frequency region higher than the frequency determined by the low frequency parameter. The low ratio is a parameter for determining a ratio of changing from the reverb time set by the reverb time parameter to the envelope of the impulse response belonging to the frequency region lower than the frequency determined by the low frequency parameter.

  These parameters have preset default values for each type of reverb. The user first sets the values of various parameters to default values by selecting the type of reverb, and then sets the parameters to 1. By designating each one and changing the value, you can change to the desired reverb characteristics. In order to make it easy for the user to visually confirm the editing process, the parameter editing apparatus according to the present embodiment creates and uses a dedicated GUI (Graphical User Interface). Hereinafter, this GUI will be described.

  FIG. 2 is a diagram illustrating an example of default values of various parameters necessary for generating the reverb and an impulse response of the reverb when the reverb type “Hall” is selected. The reverb type includes “room”, “room”, and “plate” in addition to “hole”, but the feature of the present invention is not in the reverb type. Is omitted.

  As shown in the figure, when the user designates the reverb type “hole”, a GUI including a parameter value display area 71 and a graph display area 72 is displayed on the display device 7. Shows the default values of various parameters for “Hall”. In the graph display area 72, an impulse signal is used as a dry musical sound, and a reverb generated based on the various parameter values is added to the dry musical sound. The envelope of the wet musical sound (reverb impulse response) is displayed on a three-dimensional plane in a three-dimensional graph. An envelope is a waveform (a two-dimensional waveform represented on a two-dimensional plane composed of a time axis and an amplitude axis) that represents a change in the amplitude of a musical sound along with the progress of time.

  The three-dimensional graph displayed in the graph display area 72 is displayed on a three-dimensional plane formed using the X, Y, and Z axes as a time axis, a frequency axis, and an amplitude axis, respectively. The frequency axis employs a logarithmic axis, that is, an axis in which values on the axis are represented logarithmically.

  The frequency components of the wet musical sound vary depending on the FFT (Fast Fourier Transform) capability, sampling frequency, etc., but the number of the frequency components is enormous, and it is impossible to display all of them, so 100 Hz, 1 kHz, Only the impulse responses (envelopes) 73a to 73c of three frequency components of 10 kHz are representatively displayed. The impulse responses 73a to 73c have their data roughness determined by diffusion, and the difference in the data roughness is expressed by changing the display colors of the impulse responses 73a to 73c. . However, since it is not permitted to use a color drawing, the impulse responses 73a to 73c are similarly displayed in colorless, but are actually displayed with different colors.

  In the graph display area 72, a curve 74a indicating the frequency characteristics of the low pass filter and the high pass filter and a curve 74b indicating the frequency characteristics of the reverberation time are displayed. The shape of the curve 74a changes according to the cut-off frequency of at least one of the low pass filter and the high pass filter, and the shape of the curve 74b changes according to at least one of the high ratio and the low ratio.

  Further, in the graph display area 72, edit knobs 75a to 75j are displayed for each parameter in order to edit the setting values of the respective parameters on the three-dimensional plane (using the display of the three-dimensional plane). A parameter editing method using the edit knobs 75a to 75j will be described later.

  The control process executed by the parameter editing apparatus configured as described above will be described first with reference to FIGS. 2 to 6, and then described in detail with reference to FIGS. .

  The parameter editing apparatus according to the present embodiment is characterized by a parameter editing method using the edit knobs 75a to 75j, particularly a display function during editing. Specifically, the display function at the time of editing is (1) an edit marker display function for displaying an edit marker at the time of editing, and (2) cannot be displayed on the first scale displayed before editing (it is difficult to do). This is an enlarged display function that automatically enlarges and displays up to the second scale when editing the parameter value of the second scale. In the following, when describing specific parameter editing processing, these two types of display functions will be described together.

  For example, when editing a reverb time parameter, first, the cursor C is placed on the edit knob to which the parameter is assigned, and the edit knob is selected by clicking the mouse button. Then, the color of the edit knob changes from red, which is a normal color, to yellow, which is an active color, and an edit marker appears. For example, in the display state of FIG. 2, when the user clicks on the edit knob 75a to which the reverb time is assigned to instruct the start of the reverb time change, the edit marker 75a1 is displayed as shown in FIG. , It is displayed in yellow which is the same color as the active color. However, in the illustrated example, the edit marker 75a1 is distinguished from other lines by making the line type a one-dot chain line. The edit marker 75a1 includes a straight line drawn from the edit knob 75a to the X axis in a direction perpendicular to the X axis, a straight line drawn in the Y axis direction from a point where the straight line intersects the X axis, and the straight line. A straight line drawn from the intersections of the three impulse response envelopes 73a to 73c to the vertices of the envelopes 73a to 73c in the Z-axis direction (however, a straight line is not drawn for envelopes having an amplitude level of “0”); It is constituted by a mark “□” drawn at the end point of this straight line (the intersection when no straight line is drawn).

  Next, when the edit knob 75a is dragged and moved in the X-axis method, the edit marker 75a1 is also moved in the same direction, and accordingly, the value of the reverb time parameter in the parameter value display area 71 is also changed.

  When the edit knob 75a is moved to the target position and then the mouse button is released, the parameter assigned to the edit knob 75a, that is, the reverb time is set to a value corresponding to the position, and the edit marker 75a1. Disappears and the color of the edit knob 75a returns from yellow to red.

  As described above, even when the parameter value is changed on the X axis (time axis), the change on the Y axis (frequency axis) due to the change is displayed using the edit marker. The user can quickly recognize the change on the Y axis due to the change on the X axis.

  FIG. 4 is a diagram illustrating an example of display when editing decay parameters. As can be seen from the figure, the decay parameter is edited in the same procedure and display manner as the reverb time parameter.

  FIG. 5 is a diagram illustrating an example of a display at the time of editing the room size parameter. As described above, since the room size parameter is a parameter corresponding to the size of the room, the edit marker 75d1 displayed when the room size parameter is edited represents the partition of the room (such as a wall). ing. However, the room size parameter editing procedure is the same as the reverberation time parameter editing procedure. In FIG. 5, the cursor C points to the parameter name displayed adjacently without pointing to the edit knob 75d, but in the present embodiment, the cursor C may be set to either one. I have to. The same applies to the other parameters.

  FIG. 6 is a diagram showing an example of a display when editing the initial delay parameter.

  The initial delay parameter and the reverb time parameter are common in that values on the same time axis are set, but their scales are different. That is, the initial delay is on the order of ms (milliseconds), whereas the reverb time is on the order of s (seconds). Therefore, for example, as shown in FIG. 2, when the time axis is a scale of s (seconds), the initial delay parameter is not displayed even though a valid value is set. Therefore, when editing of the initial delay parameter is instructed (when the edit knob 75b is selected), the vicinity of the parameter value set at that time is automatically enlarged (zoomed up) to display the initial delay parameter. The editing work can be easily performed (see FIG. 6). When the editing operation is completed and the mouse button is released, the enlarged display is automatically canceled and restored. Here, only the time axis to be edited is enlarged, and the scales of the amplitude axis and the frequency axis do not change. Since the initial delay parameter editing procedure is the same as the reverb time parameter editing procedure, the description thereof is omitted.

  In this way, when editing is instructed for a parameter that sets a scale value smaller than the display scale, the display is enlarged according to the small scale, so this type of parameter can be easily set. Can do.

  Next, this control process will be described in detail.

  FIG. 7 is a flowchart showing the procedure of the reverb editing process executed by the parameter editing apparatus according to the present embodiment, particularly the CPU 3. In the reverb editing process, the user selects the reverb type and instructs the reverb editing process. When it is activated.

In the reverb editing process, the following process is mainly executed. That is,
(A) Reverb edit screen display process (b) Reverb time change process for changing reverb time parameter value (c) Room size change process for changing room size parameter value (d) Decay for changing decay parameter value Change processing (e) Initial delay change processing for changing the value of the initial delay parameter (f) Other processing.

  When the reverb editing process is started, first, the process proceeds to the reverberation editing screen display process (a). When the reverb editing process is started, the reverb type is selected as described above. Therefore, (a) in the reverb editing screen display process, for example, a predetermined area of the RAM 5 is selected according to the selected type. The reverb edit screen as shown in FIG. 2 is displayed based on the parameter values recorded in (Step S1).

  Next, the process branches according to the user's operation. That is, when the user starts an operation for changing the reverb time, the process proceeds to the reverb time changing process (b) (step S2 → S3), and when the user starts an operation for changing the room size, the above (c) ) Shifts to the room size change process (steps S4 → S5), and when the user starts an operation to change the decay, the process shifts to the decay change process of step (d) (steps S6 → S7). When the operation for changing the value is started, the process proceeds to the initial delay changing process (e) (step S8 → S9 → S10 → S11).

  When the user performs an operation other than the above operation, the process proceeds to the other process (f) (step S12).

  Then, the branch process is repeated until the user gives an instruction to end the reverb edit screen.

  During the processes (b) to (e) described above, the processing procedures of the processes (b) to (d) are not so different as described above (that is, any other process can be inferred from any one). (B) The reverberation time changing process will be described as a representative. However, (e) the initial delay changing process includes the enlargement display function of (2), which is different from the processes of (b) to (d). explain.

  FIG. 8 is a flowchart showing a detailed procedure of the reverb time change processing subroutine of step S3, and shows the procedure of the reverb time change processing of (b) above.

  When the process proceeds to the reverb time change processing subroutine, as described above, when the user starts an operation to change the reverb time, that is, in FIG. 2, the user moves the cursor C to the edit knob 75a. When a click operation is performed.

  (B) In the reverb time changing process, first, the display mode of the edit knob 75a is changed (step S21). Specifically, as described above, the color is changed from red to yellow.

  Next, as described above with reference to FIG. 3, the edit marker 75a1 is displayed from the edit knob 75a (step S22).

  Each time a change operation of the reverb time is detected, the display of the edit knob 75a and the edit marker 75a1 is moved in accordance with the detected change operation (step S23 → S24), and the reverb time and the reverb used are changed. The editing screen is displayed (step S25), and the reverb time setting is changed based on the changing operation (step S26).

  The series of processes in steps S23 to S26 is performed until the user finishes changing the reverb time, specifically, until the user releases the mouse button.

  (E) In the initial delay changing process, in order to realize the enlarged display function of (2), before and after the process of the same procedure as in (b) the reverb time changing process, the leading part of the envelope (initial delay part) A process of enlarging the display (from FIG. 2 to FIG. 6) and a process of reducing the enlarged display (from FIG. 6 to FIG. 2) (that is, returning to the original scale) so that the entire length of the envelope is displayed. I try to add it.

  A program in which a storage medium storing software program codes for realizing the functions of the above-described embodiments is supplied to a system or apparatus, and a computer (or CPU 3 or MPU) of the system or apparatus is stored in the storage medium. It goes without saying that the object of the present invention can also be achieved by reading and executing the code.

  In this case, the program code itself read from the storage medium realizes the novel function of the present invention, and the storage medium storing the program code constitutes the present invention.

  As a storage medium for supplying the program code, for example, a flexible disk, hard disk, magneto-optical disk, CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-RAM, DVD-RW, DVD + RW, magnetic A tape, a non-volatile memory card, a ROM, or the like can be used. Further, the program code may be supplied from a server computer via a communication network.

  Further, by executing the program code read out by the computer, not only the functions of the above-described embodiments are realized, but also the OS running on the computer based on the instruction of the program code performs the actual processing. It goes without saying that a case where the functions of the above-described embodiment are realized by performing part or all of the above and the processing thereof is included.

  Further, after the program code read from the storage medium is written into a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer, the function expansion is performed based on the instruction of the program code. It goes without saying that the case where the CPU 3 or the like provided in the board or the function expansion unit performs part or all of the actual processing and the functions of the above-described embodiments are realized by the processing.

It is a block diagram which shows schematic structure of the parameter editing apparatus which concerns on one embodiment of this invention. When reverb type "Hall" is selected, it is a figure which shows an example of the default value of various parameters required in order to produce | generate this reverb, and the impulse response of this reverb. It is a figure which shows an example of the display at the time of editing of a reverb time parameter. It is a figure which shows an example of the display at the time of editing of a decay parameter. It is a figure which shows an example of the display at the time of editing of a room size parameter. It is a figure which shows an example of the display at the time of editing of an initial delay parameter. 2 is a flowchart showing a procedure of reverberation editing processing executed by the parameter editing apparatus of FIG. 1, particularly a CPU. It is a flowchart which shows the detailed procedure of the reverb time change process subroutine in the reverb edit process of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Operation element group (instruction | indication / movement means), 3 ... CPU (display means, instruction | indication / movement means, change means), 7 ... Display apparatus (display means)

Claims (2)

An amplitude envelope of a wet musical tone obtained when a reverb generated based on a plurality of parameters is applied to a dry musical tone is displayed on a three-dimensional plane formed by a time axis, a frequency axis, and an amplitude axis. Display means for displaying on the three-dimensional plane each operator for changing each setting value of the parameter;
An instruction / moving means for instructing each of the operators and moving the instructed operator;
Changing means for changing the value of the parameter associated with the operation element according to the movement of the operation element by the instruction / movement means;
The parameter includes a first parameter in which a time axis constituting the three-dimensional plane is displayed or set on a first scale, and a second scale having a display / setting unit smaller than the first scale. Second parameter to be displayed or set
When the operator corresponding to the second parameter is instructed by the instruction / movement means, the display means changes the display / setting unit of the time axis constituting the three-dimensional plane to the second scale. Then , the parameter editing apparatus is configured to enlarge and display the amplitude envelope in a three-dimensional region including the instructed operator. An amplitude envelope of a wet musical tone obtained when a reverb generated based on a plurality of parameters is applied to a dry musical tone is displayed on a three-dimensional plane formed by a time axis, a frequency axis, and an amplitude axis. A display procedure for displaying each operation element for changing each setting value of the parameter on the three-dimensional plane;
A change procedure for instructing each of the operators and changing a value of a parameter associated with the operator in accordance with movement of the operator by an instruction / moving means for moving the instructed operator A program for executing
The parameter includes a first parameter in which a time axis constituting the three-dimensional plane is displayed or set on a first scale, and a second scale having a display / setting unit smaller than the first scale. Second parameter to be displayed or set
When an operator corresponding to the second parameter is instructed by the instruction / moving means, the display procedure changes the display / setting unit of the time axis constituting the three-dimensional plane to the second scale. Then , the program that enlarges and displays the amplitude envelope in a three-dimensional area including the instructed operator.

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