JP4774997B2 - Music editing device and program for music editing processing - Google Patents

Description

  The present invention relates to a musical sound editing apparatus and a musical sound editing process program, and more particularly to a musical sound editing apparatus and a musical sound editing process program for displaying event data of a song on a display device.

  2. Description of the Related Art An electronic keyboard instrument that displays musical note information of music event data on a display device such as an LCD is widely known. For example, according to a proposed performance information analysis apparatus, musical score information is generated by analyzing performance information such as a melody, and time signature and bar line positions that meet a predetermined condition are automatically selected based on note length information. It is supposed to be. For this reason, a supply means for supplying pitch information and sound generation timing for each sound, and a time interval to the next sound for each sound based on sequential sound generation timing information supplied from the supply means. Creation means for creating note length information, and selection means for selecting a time signature and bar line position that meet a predetermined condition among different time signatures and different bar line positions based on the note length information from the creation means. It is configured. (See Patent Document 1)

  In general, in the performance of a song, the correlation between the pronunciation start timings of the sounds of the phrase to be played is very important. For example, in a performance where a sixteenth note continues to be played, if each note is not played at a substantially constant time interval, it becomes a so-called “must” performance, and the tempo changes to a listener who listens. It will be uncomfortable. On the other hand, when played at extremely precise time intervals as shown in the score, it becomes a dry and mechanical performance, expressing the fine fluctuations of tempo and the good rhythmic ride that further enhances the appeal of the melody. I can't. There are some rules that can be used to improve abundant performance techniques. For example, in the performance of a dotted rhythm in which a sixteenth note follows a dotted eighth note, the sixteenth note is often played short. Such a performance has a dynamic rhythm and can realize lively music. On the other hand, in the case of a very rapid song with the same rhythm, a 16th note may be played longer and a dotted quarter note may be played shorter. This is because playing a sixteenth note with a musical note length is too short and difficult to hear, so it is intentionally performed longer. However, since the performance technique is immature, the 16th note may be longer and the dotted quarter note may be shorter. Therefore, when the skill of the performer is high, it is desired to objectively recognize the sound generation start timing of each sound to be played in order to express fine fluctuations in tempo and good rhythmic riding. Also, in order to improve the tempo fluctuations when the performer's skill is low or when the performer is swayed by one of the performers, the start timing of each sound to be played is objectively recognized, and fine tempo fluctuations and rhythmical There is a demand for a method of improving abundant performance techniques that can express the good ride quality. In the prior art, as a method for objectively recognizing the sound generation start timing, a method for recording and reproducing performance data and listening to it by ear recognition, and a method for graphically displaying performance data by a display function such as a sequencer Has been adopted.

JP 7-129158 A

However, in the case of a method in which the recorded performance data is reproduced and listened to and recognized by the ear, a considerably high musical level is required, and the sound generation start timing is quantitatively recognized to improve the performance technique. It is difficult to plan. On the other hand, in the case of a method of displaying performance data graphically, for example, the horizontal axis of the graph is displayed as time and the vertical axis is displayed as pitch, or the horizontal axis of the graph is displayed as the pronunciation start time and the sound length, Since the pitch is displayed on the vertical axis, the time difference between the sounding start timing of arbitrary performance data and the sounding start timing of the next performance data is not displayed. For this reason, it is difficult to improve the performance technique by quantitatively recognizing the sound generation start timing. The proposed performance information analyzing apparatus also analyzes performance data, converts it into note information, and displays it, so that it is difficult to quantitatively recognize the pronunciation start timing.
The present invention is for solving such a conventional problem, and quantitatively and visually recognizing the sounding start timing of performance data, and improving the performance technique based on the recognized sounding start timing. It aims at trying to plan.

The musical tone editing apparatus according to claim 1 corresponds to the song memory of the RAM 4 in FIG. 2 according to the performance (in the embodiment, this corresponds to the performance of the keyboard 110 in FIG. 1). ) Is stored in the event data, and the time difference between the start timing of any note-on data in the event data and the start timing of the next note-on data is converted into graphic data and displayed. In the embodiment, when an operation for correcting a time difference between the graph displayed on the display unit and the data reading unit that displays the graph on the display unit 101 in FIG. 1 is performed, the graphic data is displayed according to the correction. Is changed by data changing means (in the embodiment, corresponding to CPU 1 in FIG. 2) and data changing means. The according to the graphic data, the data writing means for writing in the storage means to correct the said event data (in embodiments, corresponding to the CPU1 in Figure 2) has a configuration which includes a, a.

  2. The musical sound editing apparatus according to claim 1, wherein the data reading means starts the sound generation of the note-on data after the sounding start timing of any note-on data in the event data read from the storage means. When the time difference from the timing is within a predetermined time, the subsequent note-on data is merged with the arbitrary note-on data as one note-on data, and the one event data is converted into graphic data. Any configuration may be used.

In musical sound editing apparatus according to claim 1, as described in claim 3, the data reading means, in the event data read out from the storage means, the start of sounding of the next note-on data from the sounding start timing of any note-on data The event data may be converted into graphic data so that the time difference from the timing is represented by the height of the bar of the bar graph.

The program for musical tone editing processing according to claim 4 is stored in the song memory of the RAM 4 in FIG. 2 according to the performance (in the embodiment, corresponding to the performance of the keyboard 110 in FIG. 1). Means for reading the event data of the music stored in the corresponding event data, converting the time difference between the sounding start timing of any note-on data in the event data to the sounding start timing of the next note-on data into graphic data, and displaying the data When the operation for correcting the time difference between the step A for displaying the graph on the display unit (in the embodiment, corresponding to the display unit 101 in FIG. 1) and the time displayed on the display means is performed, a graphic is displayed according to the correction. a step B to change the data, in accordance with the graphic data changed in step B, the event data A step C of writing in the memory means to modify the data, the computer (in embodiments, corresponds to CPU1 in Figure 2) has a configuration to be executed in.

5. A program for musical tone editing processing according to claim 4 , wherein, as described in claim 5 , in step A, in the event data read out from the storage means, note-on data after the start timing of any note-on data is recorded. If the time difference from the sound generation start timing is within a predetermined time, the subsequent note-on data is merged with the arbitrary note-on data as one note-on data, and the one event data is converted into graphic data. You may make it the structure which converts.

The program tone editing process according to claim 4, as described in claim 6, Step A, in the event data read out from the storage means, the next note-on data from the sounding start timing of any note-on data The event data may be converted into graphic data so that the time difference from the sound generation start timing is represented by the bar height of the bar graph.

  According to the musical sound editing apparatus and the musical sound editing processing program of the present invention, the sound generation start timing of performance data is quantitatively and visually recognized, and the performance technique is improved based on the recognized sound generation start timing. The effect of being able to be obtained.

Hereinafter, an embodiment of a musical sound editing apparatus of the present invention will be described in detail with reference to the drawings, taking an electronic keyboard instrument as an example.
FIG. 1 is a plan view showing an appearance of an electronic keyboard instrument in the embodiment. In FIG. 1, the display unit 1 displays a main menu as an initial screen before performance, and can select a normal performance mode, a registered performance mode, a display mode, or a playback mode in accordance with the player's mode setting operation. it can. After the performance starts, the contents corresponding to the set mode are displayed. A switch unit including a plurality of key switches is provided below the display unit 101. That is, as shown in the figure, left shift (“L”) key 102, right shift (“R”) key 103, up (“+”) key 104, down (“−”) key 105, shift key 106, and enter. A key 107, a mode key 108, a start / stop key 109, a tone color key, a volume key, and the like (not shown) are provided. The start key and the stop key are common key switches, and are toggle switches whose state is reversed every time an ON operation is performed. The functions of other keys will be described later. The keyboard 110 inputs a pitch corresponding to the key number, a tone length corresponding to the key pressing time, and a velocity corresponding to the key pressing strength according to the performance. The two speakers 111 generate a tone signal generated inside.

  FIG. 2 is a block diagram showing a system configuration of the electronic keyboard instrument of FIG. In FIG. 2, a CPU 1 is connected to a ROM 3, a RAM 4, a display control unit 5, a keyboard detection unit 6, a switch detection unit 7, and a sound source unit 8 via a system bus 2, and commands and data are exchanged between these units. Send and receive and control the whole. The ROM 3 stores in advance a control program such as a musical sound editing process program executed by the CPU 1 and initial data. The RAM 4 is a work area for temporarily storing data processed by the CPU 1, and is provided with a song memory, various registers, flags, and pointer areas for storing performance data. The display control unit 5 includes a VRAM, a video amplification circuit, a drive circuit, and the like, develops image data supplied from the CPU 1 into frame image data in the VRAM, and displays the frame image data on the screen of the display unit 101. The keyboard detection unit 6 inputs note-on data, pitch, pitch, velocity, or note-off event and pitch according to the performance of the key release to the CPU 1 according to the key-press performance of the keyboard 110. The switch detection unit 7 detects the on or off of each switch and inputs it to the CPU 1. The sound source unit 8 includes a waveform ROM that stores waveform data corresponding to the tone color of each musical instrument, and is read from the waveform ROM according to the sound generation command (note-on data), pitch, tone length, and velocity of the CPU 1. Based on the waveform data, a musical sound signal is generated and output to the sound system 9, and the output of the sound system 9 is stopped according to the mute command (note-off event) and pitch of the CPU 1. The sound system 9 includes a D / A conversion circuit, a filter circuit, an amplification circuit, and the like, a process for converting a musical sound signal input from the sound source unit 8 from digital to analog, and a filter process for removing unnecessary high-frequency components. Then, an amplification process is performed, and the two speakers 111 in FIG.

Next, the operation of the electronic keyboard instrument in this embodiment will be described with reference to the flowchart of the CPU 1 shown in FIGS. 3 to 13, the screen of the display unit 101 shown in FIGS. 14 to 18, the data configuration of the RAM 4, and the like.
FIG. 3 is a flowchart of the main routine of the CPU 1. After predetermined initialization (step SA1), processing corresponding to the value of the register MODE indicating the current mode is executed. The value of MODE is cyclically changed from “0” → “1” → “2” → “3” → “0”... According to the ON operation of the mode key 108 in FIG. First, it is determined whether or not MODE is 0 (step SA2). If MODE is 0, normal performance processing is performed (step SA3). In the normal performance process, note-on or note-off event data, pitch, tone length, and velocity input from the keyboard detection unit 6 according to the performance of the keyboard 101 are output to the sound source unit 8 and sounded from the speaker 111.

  If MODE is not 0, it is determined whether MODE is 1 (step SA4). If MODE is 1, registration processing is executed (step SA5). If MODE is not 1, it is determined whether or not MODE is 2 (step SA6). If MODE is 2, display processing is executed (step SA7). If MODE is not 2, it is determined whether MODE is 3 (step SA8). If MODE is 3, playback processing is executed (step SA9).

  After the normal performance process in step SA3, after the registration process in step SA5, after the display process in step SA7, or after the reproduction process in step SA9, it is determined whether or not the MODE has been changed (step SA10). . If the MODE is not changed, the processing in the current mode is continued. If the MODE is changed, the changed value is stored in the MODE (step SA11). Then, processing corresponding to the changed MODE is executed.

  FIG. 4 is a flowchart of the registration process in step SA5 in the main routine. It is determined whether or not the start key switch 109 is turned on (step SB1). When this key is turned on, the flag STF is set to 1 (registration), and the address of the song memory in the RAM 4 for registering performance data is set. The pointer N shown is set to 1 (start address) (step SB2). Further, the time register T is cleared to 0 (step SB3). Thereafter, the prohibition of the timer interrupt is canceled (step SB4). By canceling the prohibition of the timer interrupt, the value of the time register T is incremented every time a fixed time elapses. That is, the elapsed time is stored in T.

  Thereafter, it is determined whether or not STF is 1 (step SB5). When STF is 1, the keyboard detection unit 6 determines the key change of the keyboard 101 (step SB6). If the performance is not performed and there is no key change, the process returns to the main routine. However, if there is a key change that is on, that is, if a key is played, the note-on data, note (pitch), pitch And a sound generation process for sending the velocity to the sound source unit 8 (step SB7). Further, using the pointer N as an address, the time of the time register T, that is, the sound generation start timing, note-on, note and velocity are stored in the song memory of the RAM 4 (step SB8). Next, the value of N is incremented and the address of the song memory is updated (step SB9). Then, the process returns to the main routine of FIG.

  In step SB6 of FIG. 4, when there is an off key change, that is, when a key release is performed, a mute process is performed to instruct the sound source unit 8 to mute (step SB10), and the pointer N is addressed. Then, the time, note-off, and note of the time register T are stored in the address N of the RAM 4 (step SB11). Next, the value of N is incremented and the address of the song memory in the RAM 4 is updated (step SB9). Then, the process returns to the main routine of FIG.

  In step SB1 in FIG. 4, if the start key switch is not on, it is determined whether or not the stop key switch is turned on (step SB12). When the stop key is turned on, the STF is reset to 0 (step SB13), and the timer interrupt is prohibited (step SB14). Then, the process returns to the main routine of FIG.

  FIG. 14 is a diagram showing a transition in which note-on data stored in the RAM 4 is converted into graphic data. FIG. 14 (1) is a diagram showing note-on data, that is, key-press performance data, among events stored in the song memory of the RAM 4. The address in FIG. 14 (1) represents the value of the time register T at the start of key depression, that is, the sounding start timing of note-on data. The address unit “0001” represents a unit time length corresponding to the sound length of a 40th note in this case, and the sound length unit is seconds. Therefore, when the tempo of the song is 120 for a quarter note per minute, the address unit “0001” has a time length of 25 ms. Therefore, the pitch C4, the pitch 0.50, and the velocity 104 stored at the first address “0003” in FIG. 14A are the key of C4 at the sounding start timing “0003 (75 ms)” from the start of the performance. Represents that the key has been depressed at the velocity 104 for a time of 500 ms. As described above, since the address value and the elapsed time are linked, in the following description, the elapsed time is expressed as the address value.

  5 to 9 are flowcharts of the display process in step SA7 in the main routine of FIG. In this display processing, data conversion for storing the note-on data in the song memory of FIG. 14 (1) in the display register (1) of FIG. 14 (2) is performed. Data is stored in the display register (2) shown in FIG. First, it is determined whether or not the flag DISP is “0” (step SC1). If the DISP is “0”, the pointer N and the pointer M are set to “1” (step SC2). N is a pointer for accumulating the address unit of the song memory shown in FIG. M is a pointer indicating the address (1, 2, 3,...) Of the display register (1) shown in FIG. Next, the register HM for managing the chord time is cleared to “0” (step SC3).

  Next, it is determined whether or not there is note-on data at the address of the pointer N (step SC4). If there is no note-on data, the value of N is incremented (step SC5). Then, the process proceeds to step SC4 to determine whether or not there is note-on data at the address of the pointer N. If there is note-on data at address N, the address of N is stored in register n (step SC6). Then, the value of N is incremented (step SC7). At this time, it is determined whether the address of N has exceeded the final address of the song memory (step SC8). If the address of N does not exceed the final address, it is determined whether or not there is note-on data at the address of the pointer N (step SC9). If there is no note-on data at the N address, the loop memory of step SC7, step SC8, and step SC9 is repeated to search for the note-on data in the song memory unless the N address exceeds the final address of the song memory. . If there is note-on data at the address N in step SC9, the address N is stored in the register m (step SC10). That is, in two consecutive note-on data, the address of the previous note-on data is stored in n, and the subsequent note-on data is stored in m.

  Next, in the flowchart of FIG. 6, the value of T at address n is subtracted from the value of T at address m and stored in register H (step SC12). That is, the time difference between the sound generation start timing of the note-on data at the address m and the sound generation start timing of the note-on data at the address n is stored in the register H. Next, it is determined whether the time difference stored in H is greater than or less than a predetermined time α (step SC13). The value of α is a threshold value for determining whether the two note-on data at the address n and the address m are chords, and corresponds to an address difference of “0001”, for example. If the value of H is larger than α and the two note-on data at address n and address m are not chords, H and the register are set as “time difference” in the M area of display register (1) shown in FIG. The time added with HM is stored, and "1" is stored in "Grouping" (step SC14). HM is a register for accumulating time differences of chords. In step SC14, after the values of “time difference” and “grouping” in the M area are stored, HM is cleared to “0” (step SC15), and the address of register m is set to register n (step SC16). . In step SC13, if the time difference stored in H is less than or equal to α, that is, if the two note-on data at address n and address m are chords, the time difference of H is added to register HM (step SC17). Thus, when a plurality of continuous note-on data forms a chord, the first note-on data is stored in the M area of the display register (1), and the remaining one or more note-on data is The time difference of the sound generation start timing with the previous note-on data is accumulated in HM. As a result, in the plurality of note-on data constituting the chord, the subsequent note-on data is merged with the first note-on data.

  After setting the address of the register m in the register n in step SC16 or adding the time difference of H to HM in step SC17, the process proceeds to step SC7 in the flowchart of FIG. Searches for the next new note-on data in the song memory. Each time new note-on data is acquired, the address of the new note-on data is stored in the register m (step SC10). In the flowchart of FIG. 6, the T value of the register m and the T value of the register n are stored. If the two note-on data are not chords, they are stored in the display register (1) (step SC14). If they are chords, the time difference is added to HM (step SC17). . When the processing for all the note-on data in the song memory is completed and the address N exceeds the final address of the song memory at step SC8 in FIG. 5, the flag DISP is set to “1” (step SC11). ), The process proceeds to step SC1.

  When DISP is set to “1”, the address difference of the note-on data in the song memory shown in FIG. 14 (1) is stored in the area of each note number as the time difference of the display register (1) in FIG. 14 (2). Stored and “1” is stored in the grouping point of each area. In this case, as shown in FIG. 14A, the address difference is “0007” to “0016” larger than the value “0001” of α and does not include chords. “1” is stored in all grouping points of the display register (1).

  On the other hand, when a chord is included in the song memory, a plurality of note-on data constituting the chord are regarded as one note-on data and stored in the display register (1). FIG. 15 is a diagram illustrating an example of storing note-on data of chords in the song memory of the RAM 4 in the display register (1). The sixth note of measure 1 in FIG. 15 (1) includes D4 and E4 chords. Now, when the sound generation start timing of the note-on data of E4 is delayed by “0001” from the sound generation start timing of the note-on data of D4, the address “0030” is stored in the song memory of FIG. The pitch of D4 is stored, and the pitch of E4 is stored at the address “0031”. Since the difference between the E4 address and the D4 address, that is, the time difference between the E4 sounding start timing and the D4 sounding start timing is “0001”, it is determined as a chord in step SC13 in FIG. 6, and D4 and E4 are merged. And stored in the display register (1) as one note-on data.

  If DISP is “1” in step SC1 in FIG. 5, the pointer M for designating the area of the display register (1) in FIG. 14 (2) is set to “1” in the flowchart in FIG. The pointer N for designating the area of the display register (2) 14 (3) is set to 0 (step SC18). The display register (2) is a store register for graphic data for displaying a bar graph on the display unit 101. Next, it is determined whether the “grouping” of M in the display register (1) is “1” or “0” (step SC19). When the “grouping” of M is “1”, the value of N is incremented (step SC20), and the time difference of the display register (1) is stored in the address N of the display register (2) (step S20). SC21). On the other hand, if the “grouping” of M of the display register (1) is “0” in step SC19, the time difference of the display register (1) is set to the time difference of the address N of the display register (2). Add (step SC22). After the time difference is stored in step SC21 or after the time difference is added in step SC22, the value of M is incremented (step SC23). Then, it is determined whether or not the incremented M value exceeds the final address of the display register (1) (step SC24). If the M value does not exceed the final address, the process proceeds to step SC19. The loop process up to step SC24 is repeated. In step SC24, when the value of M exceeds the final address, that is, after all the data in the display register (1) is stored in the display register (2), it is based on the contents of the display register (2). Then, the display control unit 5 displays a bar graph on the display unit 101 and displays a cursor (step SC25).

  FIG. 16 is a diagram showing a bar graph 502 displayed on the keyboard image 501 of the display unit 101 based on the data stored in the display register (2). A cursor 503 is displayed below the bar graph 502. After the bar graph is displayed on the display unit 101 in step SC25 in FIG. 7, it is determined in the flowchart in FIG. 8 whether or not the shift key 106 of the switch unit in FIG. 1 is in the ON state (step SC26). If the shift key 106 is not in the on state, it is determined whether or not the left movement key 102 or the right movement key 103 has been turned on (step SC27). When the left movement key 102 or the right movement key 103 is turned on, the position of the cursor 503 is moved (step SC28). Next, it is determined whether or not the position of the cursor 503 is on the graph (step SC29). If the position of the cursor 503 is on the graph, the bar at the cursor position is highlighted (step SC30a). The bar graph of FIG. 16 is obtained by converting note-on data of the lower score into graphic data and displaying it. The third bar g3 is designated and highlighted by the cursor 503. In this figure, three dotted lines represent an eighth note comparison line, a quarter note comparison line, and a half note comparison line in order from the bottom. The height of the bar g3 represents the time difference from the sounding start timing of the third E4 note n3 to the sounding start timing of the fourth F4 note n4 in the score shown at the bottom of the screen.

  After highlighting the bar in step SC30a, the note address corresponding to the bar with the cursor 503 is stored in register n (step SC30b). Therefore, in the example shown in FIG. 16, the bar number 3 of the display register (2), which is note-on data corresponding to the highlighted bar of the graph, is stored in n. Next, it is determined whether or not the up key 104 is turned on in the switch section of FIG. 1 (step SC31). When this key is turned on, the value of the register ΔT indicating the correction value of the bar height is incremented. (Step SC32). If the up key 104 is not turned on, it is determined whether or not the down key 105 is turned on (step SC33). If this key is turned on, the value of ΔT is decremented (step SC34). After incrementing or decrementing the value of ΔT, change processing (1) is executed (step SC35). Since the initial value of ΔT is “0”, the value includes positive and negative signs.

  FIG. 10 is a flowchart of the change process (1). First, pointers M and N for designating the note number of the display register (1) are set to “1” (step SD1). Next, it is determined whether or not the grouping of note numbers M in the display register (1) is “1” (step SD2). When the grouping of the note number M is “0”, that is, when the note-on data of the song memory corresponding to the note number M is a chord including at least the previous note-on data, the value of M Is incremented (step SD3), and it is determined in step SD2 whether or not the grouping of note numbers M is “1”. When the grouping of the note numbers M is “1”, it is determined whether or not the value of the pointer N is the same as the value of n that is the note address corresponding to the graph at the cursor position (step SD4). If the value of N is different from the value of n, the value of N is incremented (step SD5), the value of M is incremented (step SD3), and the grouping of note numbers M is again “1” in step SD2. Is determined. When the grouping of the note numbers M is “1” and the values of N and n are the same, the pointer k for designating the address of the song memory is set to 1, and the display register (1 ) Is set to 1 (step SD6). Then, the loop processing from step SD7 to step SD15 is executed, and the correction content of the graph on the display unit 101 is reflected in the song memory by turning on the up key or the down key.

  In this loop processing, it is determined whether or not the event note in the address k of the song memory is note-on (step SD7). If the event note in the address k is note-off, the value of k is incremented. In step SD8, it is determined whether or not the event note at the next address is note-on. If the event note in the address k is note-on, it is determined whether or not the value of m is the same as the value of “M + 1” (step SD9). When the value of m is different from the value of “M + 1”, the value of m is incremented (step SD10), and the address of k is incremented (step SD11). Then, the process proceeds to step SD7, and the loop processing of step SD7, step SD10, and step SD11 is repeated until the value of m becomes “M + 1” in step SD9. When the value of m becomes “M + 1”, the positive or negative ΔT increased or decreased in step SC32 or step SC34 in FIG. 8 is added to the value of T that is the sounding start timing of the address k in the song memory. (Step SD12). Further, ΔT is added to the corresponding note-off T (step SD13).

  For example, it is assumed that the bar g3 of the bar graph m on the display unit 101 is corrected by turning on the up key 104 so as to increase the height. The height of the bar g3 is the height “7” of the bar number 3 of the display register (2). This value represents a time difference obtained by subtracting the sounding start timing of the previous note-on data n3 from the sounding start timing of the next note-on data n4. When this height is corrected from “7” to “10”, the sounding start timing of the note-on data n4 is corrected to be delayed by “3”. Therefore, the next note-on is searched from the song memory, and “0003” is added to the sounding start timing T.

  After step SD13 in FIG. 10, the value of M is incremented (step SD14), and it is determined whether or not the grouping of note numbers M in the display register (1) is “0” (step SD15). When the grouping of the note number M is “1”, the process proceeds to step SD7, and the loop process of adding ΔT to the sounding start timing T of the note-on data in the song memory is repeated. In step SD15, when the grouping of note numbers M is “0”, the display is cleared (step SD16), and the process returns to the flowchart of FIG. After step SC35 in FIG. 8, DISP is reset to “0” (step SC36), and the process proceeds to step SC1 in the flowchart in FIG.

  Thereafter, the graph displayed on the display unit 101 is changed based on the corrected sounding start timing in the song memory of FIG. That is, the flowcharts of FIGS. 5 and 6 are executed again to store the note-on data of the song memory of FIG. 14 (1) in the display register (1) of FIG. 14 (2), and the flowchart of FIG. The note-on data of the display register (1) in FIG. 14 (2) is stored in the display register (2) in FIG. 14 (3), and after step SC1, the process proceeds to the flowchart in FIG. 7 again. Then, the changed graph is displayed on the display unit 101.

  If it is determined in step SC26 in FIG. 8 that the shift key is on, it is determined whether or not the left and right movement keys 102 and 103 are turned on in the flowchart in FIG. 9 (step SC37). When one of the left and right movement keys 102 and 103 is turned on while the shift key is on, the cursor position is moved (step SC38). Next, it is determined whether or not the cursor position is on the graph (step SC39). If the cursor position is on the graph, the graph bar at the cursor position is highlighted (step SC40). Then, it is determined whether or not the enter key switch 107 is turned on (step SC41). If this switch is not turned on, the left and right movement keys 102 and 103 are turned on as long as the shift key is kept on. In response, highlight multiple bars. When the determination switch is turned on in step SC41, change process (2) is executed (step SC42).

  FIG. 11 is a flowchart of the change process (2). In this process, a plurality of note-on data that do not constitute a chord are integrated into one note-on data, and the display area of the graph 502 shown in FIG. Enables overall analysis. In FIG. 11, first, the note number corresponding to the bar of the highlighted graph is stored (step SE1). Next, the pointer M for designating the note number of the display register (1) is set to “1” (step SE2), and the loop processing from step SE3 to step SE6 is executed while incrementing the value of M. . That is, it is determined whether or not the address M of the display register (1) is the highlighted note number stored (step SE3), and if the address M is the stored note number, the display is made. The “grouping” of the address M of the register (1) is set to “0” (step SE4). After the “grouping” of the address M is set to “0” or when the address M is not the stored note number in step SE3, the value of M is incremented (step SE5). Then, it is determined whether or not the incremented M value has exceeded the final address of the display register (1) (step SE6). If the value of M does not exceed the final address, the process proceeds to step SE3 and loop processing is repeated. When the value of M exceeds the final address, the display is cleared (step SE7), and the process proceeds to step SC18 in the flowchart of FIG. In the case of the changing process (1) in FIG. 10, the contents of the song memory are changed based on the correction of the displayed graph. Since a plurality of note-on data not constituting a chord is modified and integrated into one note-on data, the contents of the song memory are not changed.

  FIG. 17 is a diagram showing a change process (2) for integrating a plurality of note-on data not constituting a chord into one note-on data. Since the notes in the score shown in FIG. 17 (1) do not constitute chords, they are usually represented by seven bar graphs up to 7g as shown in the graph 502 of FIG. In the score of FIG. 17 (1), if the first four note-on data of the first measure are “group 1” and the last three note-on data are “group 2”, one note-on data each. , The time difference from note numbers 2 to 4 is accumulated into the time difference of note number 1 as shown in display register 1 in FIG. 17 (2), and “grouping” becomes “0”. The time difference between the numbers 6 and 7 is accumulated in the time difference between the note numbers 5 and “grouping” becomes “0”. Therefore, when the data in the display register (1) in FIG. 17 (2) is stored in the display register (2) in FIG. 17 (3), the heights “40” and “38” in which the time differences of the groups are accumulated are stored. "Are two bar numbers 1 and 2. As a result, as shown in FIG. 17 (4), a graph of two bars displayed on the display unit 101 is obtained.

  FIG. 12 is a flowchart of the reproduction process in step SA9 in the main routine of FIG. First, it is determined whether or not DISP is “1” (step SF). If DISP is “0”, the process returns to the main routine. If DISP is “1”, the start key shown in FIG. It is determined whether or not the switch 109 has been turned on (step SF2). When the start switch is turned on, the flag STF is set to “1” (step SF3), the pointer N for designating the song memory event is set to “1”, and the timer register T is cleared to “0”. (Step SF4). Then, the prohibition of the timer interrupt is canceled (step SF5). FIG. 13 is a flowchart of the timer interrupt. After canceling the prohibition of the timer interrupt, the value of T is incremented according to the timer interrupt at regular intervals (step SG1).

  After canceling the prohibition of the timer interrupt in step SF5 or when the stop switch is not on in step SF13, it is determined whether or not STF is “1” (step SF6). If the STF is “1”, it is determined whether or not the value of T has reached a time t with N as an address (step SF7). When the value of T reaches time t, event processing with N as an address is executed (step SF8). That is, when the event is note-on data, the pitch, tone length, and velocity of the note-on data are transmitted to the sound source unit 8 together with the sound generation instruction command to generate sound. If the event is a note-off event, the pitch of the note-on data is sent to the sound source unit 8 together with a mute instruction command to mute the sound. If the event is not a note event but control data such as a control change, processing corresponding to the event is performed. Next, the value of N is incremented and the next address is designated (step SF9). Then, it is determined whether or not the incremented value of N has exceeded the final address of the song memory (step SF10). If not, the loop of step SF1, step SF13, step SF6, and step SF7 is executed. Repeatedly, every time the value of T reaches time t with N as an address, processing of an event with N as an address is executed. In step SF10, when the value of N exceeds the final address of the song memory, that is, when all the events of the changed song memory have been processed, the STF is reset to “0” (step SF11), and timer interrupt is prohibited (step SF12). Then, the process proceeds to step SF2 to determine whether the start switch is on. In this way, each time a correction operation is performed on the graph displayed on the display unit 101, the contents of the song memory are changed and the changed event is reproduced.

  If the start switch is not turned on in step SF2, it is determined whether or not the stop switch is turned on (step SF13). When the stop switch is turned on, the STF is reset to “0” (step SF14), and the timer interrupt is prohibited (step SF15). Then, the process returns to the main routine of FIG.

As described above, according to this embodiment, the CPU 1 reads the event data of a song stored in the song memory of the RAM 4 according to the performance of the keyboard, converts the event data into graphic data, and displays the display unit 101. A bar graph is displayed, and when a correction operation is performed with the up key switch 104 or the down key switch 105 for the height of the displayed bar graph, the graphic data is changed according to the correction, and the changed graphic is displayed. Convert data to event data and write it to song memory. In this case, in the event data read from the song memory, the CPU 1 converts the event data into graphic data so as to represent the time difference between the sounding start timing of any note-on data and the sounding start timing of the next note-on data. To do.
Accordingly, it is possible to quantitatively and visually recognize the sound generation start timing of the performance data, and to improve the performance technique based on the recognized sound generation start timing. Specifically, the performer clearly sees the weak point or tendency (癖) of his / her bad performance timing or the timing or tendency of his good performance by looking at the graph displayed on the display unit 101. You can improve your performance skills.

  For example, in the graph 502 of FIG. 16, the third bar g3 from the left is shorter than the other bars, and the bar g4 immediately after that is longer. This indicates that the fourth F4 note n4 from the beginning of the song was played forward. A similar tendency is seen in the tenth bar g10 and the eleventh bar g11. Such a tendency is generally expressed as “coroll”, and is often found in performances with unskilled performance techniques. Beginners do not have enough fingering or musical sensation as finger movements, so some notes may turn forward in the sequence of notes to be played at the same time interval, or vice versa. May lean back. According to the present invention, the performer can quantitatively and visually recognize the time difference between the pronunciation start timings displayed in the graph, modify the displayed graph, change the song memory, and edit it to an exemplary performance. Thus, the playing technique can be improved.

  Further, in the graph 502 of FIG. 16, the height of the bar g7 corresponding to the last C4 quarter note of the first measure and the height of the bar g14 corresponding to the last E4 quarter note of the second measure from the bottom. The second dotted line, the quarter note comparison line, has not been reached. The height of each previous two bars is about the same as the comparison line of the bottom eighth note, but the height of bars g7 and g14 is lower than the comparison line of the quarter note above it. This indicates that the sounding start timing of the last quarter note C4 of the first measure and the last quarter note E4 of the second measure is earlier. This is also a tendency that is often seen in beginner performances. When a long note comes after a short eighth note, because it is used to the previous short note, the note value of the next long note is reduced. This is a phenomenon that cannot be maintained and occurs when the next performance is performed first. Even in such a case, the present invention quantitatively and visually recognizes the time difference between the pronunciation start timings displayed in a graph, modifies the displayed graph, changes the song memory, and performs an exemplary performance. By editing and playing, the performance technique can be improved.

  FIG. 18 is a diagram showing an example in which performance data of repeated hits with the same pitch aligned at equal intervals are grouped and displayed as a graph. In the score of FIG. 18 (1), phrases having 16 sixteenth notes in one measure are grouped into four groups, and the performance results are represented by the graph shown in FIG. 18 (2). Yes. That is, the time difference between the sound generation start timings in each group is represented by four bars. As is clear from this graph, the height of the bar gradually decreases as the group becomes later. This is also a phenomenon of “running” that is common in actual performances, and the tempo gradually increases as the performance progresses, but the performer himself is often not aware of it. In the case of such a tendency, it is possible to grasp the tendency of performance by viewing a group of a plurality of notes in this way, rather than looking at each note unit. Therefore, even in such a case, the present invention quantitatively and visually recognizes the time difference between the pronunciation start timings displayed in a graph, and modifies the displayed graph to change the song memory. By editing and playing back the performance, the performance technique can be improved.

  As described above, the present invention is effective not only for improving performance techniques by recognizing the drawbacks of performance such as timing shifts and variations among beginners, but also for skilled performers. As described above, in the case of a mechanical performance according to the score, the heights of the bars of the displayed graph will be aligned on the comparison line, resulting in a tasteless and dry performance with a thin human touch. . Therefore, by modifying the displayed graph and changing the note-on data of the song memory, it is possible to express fine fluctuations in tempo and good rhythmic riding.

Further, in the above embodiment, as shown in FIG. 15, in the event data read from the song memory, the CPU 1 has a time difference between the sounding start timing of any note-on data and the sounding start timing of the subsequent note-on data. If it is within a predetermined time α which is a chord threshold value, subsequent note-on data and arbitrary note-on data are grouped and regarded as one note-on data, and the event data is converted into graphic data.
Therefore, for a plurality of note-on data composing a chord, a limited display screen can be used effectively by displaying the graphs together in one graph.

In the above embodiment, as illustrated in FIG. 17, the CPU 1 determines the note-on data sounding start timing after the note-on data sounding start timing in the graph displayed on the display unit 101. When a merge operation is performed on a graph area corresponding to a plurality of note-on data whose time difference exceeds a predetermined time α that is a chord threshold, the graph area corresponds to one note-on data. The graphic data is changed so as to be integrated into the area, but the graphic data corresponding to the integrated graph area is not converted to event data even if the height of the bar graph is modified, and is written to the song memory. Absent.
Therefore, even for a plurality of note-on data that do not constitute a chord, a limited display screen can be used effectively by considering the data as one note-on data according to the operation and integrating them into a graph.

  Further, in the above embodiment, as shown in the flowchart of the reproduction process in FIG. 12, each time the displayed graph is modified to change the event of the song memory, the change of the song memory is performed by turning on the start switch. Since the event is played back, you can actually listen to the changed content. In this case, in the above embodiment, the performance data of the changed note-on data is overwritten on the original performance data. However, the performance data before the change is written in a different area from the original performance data. You may make it the structure which hears and compares with the performance data after a change.

  In the above embodiment, the bar graph is used to quantitatively and visually display the time difference between the sounding start timings of the note-on data. However, the time difference between the sounding start times of the note-on data is quantitatively and visually displayed. A line graph or another form of graph may be used as long as it is displayed.

  In the above-described embodiment, the invention of the apparatus in which the CPU 1 executes the musical tone editing process program stored in advance in the ROM 3 has been described. However, the program is stored in an external storage medium such as a flexible disk (FD), CD, or memory card. It is also possible to install the performance processing program downloaded from the network or a performance processing program downloaded from a network such as the Internet into the RAM 4 or a non-volatile memory such as a separately provided flash ROM or hard disk, and the CPU 1 can execute the program. It is. In this case, the invention of the program and the invention of the storage medium can be realized.

That is, the musical sound editing process program of the present invention is:
The event data of the song stored in the storage means is read according to the performance, and the time difference between the sounding start timing of any note-on data in the event data and the sounding start timing of the next note-on data is converted into graphic data. Step A for displaying the graph on the display means, and when the operation for correcting the time difference of the graph displayed on the display means is performed, step B for changing the graphic data in accordance with the correction, and step B The computer executes the step C of converting the changed graphic data into event data and writing it into the storage means.

  In the event data read out from the storage unit, the step A is performed when the time difference between the sounding start timing of any note-on data and the sounding start timing of the subsequent note-on data is within a predetermined time. The note-on data is merged with the arbitrary note-on data to form one note-on data, and the one event data is converted into graphic data.

  In the graph displayed on the display unit, the step B includes a plurality of note-on data in which a time difference between a sounding start timing of any note-on data and a sounding start timing of a later note-on data exceeds a predetermined time. When the merge operation is performed on the graph area corresponding to the graphic area, the graphic data is changed so as to be integrated into the graph area corresponding to one note-on data. The graphic data corresponding to the graph area is not converted into event data and is not written in the storage means regardless of whether or not the graph shape is corrected.

  In step A, in the event data read from the storage means, the time difference between the sounding start timing of any note-on data and the sounding start timing of the next note-on data is represented by the bar height of the bar graph. Convert event data to graphic data.

  When the operation for correcting the shape of the graph displayed on the display means is performed, the method further includes a step D for outputting the event data of the music changed corresponding to the corrected graph to the sound source means for sound generation.

The top view which shows the external appearance of the electronic keyboard musical instrument in embodiment of this invention. The block diagram which shows the system configuration | structure of the electronic keyboard instrument of FIG. The flowchart of the main routine of CPU of FIG. The flowchart of the registration process in FIG. The flowchart of the display process in FIG. The flowchart of the display process following FIG. The flowchart of the display process following FIG. The flowchart of the display process following FIG. The flowchart of the display process following FIG. The flowchart of the change process (1) in FIG. The flowchart of the change process (2) in FIG. The flowchart of the reproduction | regeneration processing in FIG. 3 is a flowchart of timer interrupt processing of the CPU in FIG. 2. The figure which shows the transition which converts the note-on data stored in RAM of FIG. 2 into graphic data. The figure which shows the example which stores the note-on data of the chord of the song memory of RAM of FIG. 2 in the display register (1). The figure which shows the bar graph displayed on the keyboard image of a display part based on the data stored in the display register (2) of RAM of FIG. The figure which shows the change process (2) which integrates several note-on data which does not comprise the chord into one note-on data. The figure which shows the example which grouped and displayed the performance data of the continuous pitch of the same pitch which followed equal intervals, and displayed it as a graph.

Explanation of symbols

1 CPU
3 ROM
4 RAM
DESCRIPTION OF SYMBOLS 5 Display control part 6 Keyboard detection part 7 Switch detection part 8 Sound source part 9 Sound system 101 Display part 110 Keyboard

Claims (6)

The event data of the song stored in the storage means is read according to the performance, and the time difference between the sounding start timing of any note-on data in the event data and the sounding start timing of the next note-on data is converted into graphic data. Data reading means for displaying a graph on the display means;
When an operation for correcting the time difference of the graph displayed on the display means is performed, data changing means for changing graphic data in accordance with the correction;
In accordance with the graphic data changed by the data changing means, a data writing means for correcting the event data and writing it in the storage means;
Music editing device equipped with.   In the event data read from the storage means, the data reading means, when the time difference between the sounding start timing of any note-on data and the sounding start timing of the subsequent note-on data is within a predetermined time, 2. The musical tone editing apparatus according to claim 1, wherein the note-on data is merged with the arbitrary note-on data into one note-on data, and the one event data is converted into graphic data.   In the event data read from the storage means, the data reading means represents a time difference between the sounding start timing of any note-on data and the sounding start timing of the next note-on data by the height of the bar of the bar graph. 2. The musical sound editing apparatus according to claim 1, wherein the event data is converted into graphic data. The event data of the song stored in the storage means is read according to the performance, and the time difference between the sounding start timing of any note-on data in the event data and the sounding start timing of the next note-on data is converted into graphic data. Step A for displaying the graph on the display means,
When an operation for correcting the time difference of the graph displayed on the display means is performed, step B for changing graphic data in accordance with the correction;
In accordance with the graphic data changed in the step B, the step C of correcting the event data and writing it in the storage means;
A performance processing program that causes a computer to execute. In the event data read out from the storage unit, the step A is performed when the time difference between the sounding start timing of any note-on data and the sounding start timing of the subsequent note-on data is within a predetermined time. 5. The program of musical tone editing processing according to claim 4 , wherein the note-on data is merged with the arbitrary note-on data to be converted into one note-on data, and the one event data is converted into graphic data. In step A, in the event data read from the storage means, the time difference between the sounding start timing of any note-on data and the sounding start timing of the next note-on data is represented by the bar height of the bar graph. 5. The performance processing program according to claim 4 , wherein the event data is converted into graphic data.

Images