JP6127549B2 - Music data editing method, program for realizing the music data editing method, and music data editing apparatus - Google Patents

Description

  The present invention relates to a music data editing method capable of displaying and editing music data composed of an event sequence for controlling the sound generation of musical sounds, a program for realizing the music data editing method, and a music data editing apparatus.

  As a music data editing apparatus, there is a PC (personal computer) on which DAW (Digital Audio Workstation) software is installed and started.

  On the display of the PC on which DAW software capable of handling both MIDI (Musical Instrument Digital Interface) data and audio data is activated, note events for MIDI data are recorded on notes and piano rolls on the staff. The audio data is displayed as a waveform, while the audio data is displayed as a circle or rectangle, or as a list with numerical values.

  As described above, in the conventional DAW software, the display mode of MIDI data and the display mode of audio data are different from each other. Therefore, even when the user wants to give the same effect to the MIDI data and the audio data, the respective operation methods are different. Unlikely, editing work is difficult. For example, to reverse audio data (reversing the data playback order from right to left so that the data is played in the reverse direction), the user specifies the range to be reversed and the right mouse button Click to open a pop-up menu, and select “Reverse” in the menu. On the other hand, in order to reverse the MIDI data, the user sends a MIDI program change message for changing the tone originally set in the MIDI data to the tone of the musical tone generated when the MIDI data is reversely reproduced. It needs to be created and added into the MIDI data.

  Therefore, in order to match the editing method between MIDI data and audio data, MIDI data of a track to which MIDI data is assigned (hereinafter referred to as “MIDI track”) is converted into audio data, and all tracks are converted into audio data. Is generally assigned to a track (hereinafter referred to as an “audio track”).

  However, when the above-described conventional method, that is, the method of converting the MIDI data of the MIDI track into the audio data in order to match the editing method, the converted MIDI track is no longer an audio track, and the MIDI track before conversion is used. Since it is not a track, the user can use the editing function unique to the MIDI track (MIDI data) that can be used in the MIDI track before conversion (specifically, transposition and tempo without replacement of musical instruments (tones) and sound quality degradation. Change) and so on.

  The present invention has been made paying attention to this point, and a music data editing method capable of using an editing function unique to MIDI data while the editing method matches the editing method for audio data, and the music It is an object to provide a program and a music data editing apparatus for realizing a data editing method.

In order to achieve the above object, a music data editing method according to claim 1 includes a first display step of displaying an event on a display means of music data consisting of an event sequence for controlling the sound generation of a musical sound, and the music data For each of the included note events, a waveform image acquisition step for acquiring corresponding waveform image data, and the music data is displayed as a waveform on the display means based on the waveform image data acquired by the waveform image acquisition step. have a second display step, in the waveform image acquisition step, if there the corresponding waveform image data, acquires the corresponding waveform image data, if the corresponding waveform image data is present, Default waveform image data is acquired .

The music data editing method according to claim 2 further comprises a timbre information acquisition step of acquiring timbre information from a musical sound signal generating means for generating a musical sound signal based on the music data in the music data editing method of claim 1. and, in the waveform image acquisition step, on the basis of the tone color information acquired by the tone color information acquiring step, and acquires the corresponding waveform image data or the default waveform image data.
The music data editing method according to claim 3 is the music data editing method according to claim 2, wherein the default waveform image data is specific waveform image data fixedly determined in advance or the acquired timbre information. It is characterized by close waveform image data.

A music data editing method according to a fourth aspect of the present invention is the music data editing method according to any one of the first to third aspects, wherein the user displays the data on the display means using an input means for inputting an editing instruction. A conversion step of converting the input editing instruction into the editing instruction of the music data when an editing instruction is input to the waveform image, and the displayed waveform according to the input of the editing instruction by the user And a control step for controlling to change the waveform image data instructed to be edited in the image and to display the music data based on the editing instruction converted by the conversion step. To do.

In order to achieve the above object, the program and the music data editing apparatus described in claims 5 and 6 can be realized by the same technical idea as in claim 1.

According to the first, fifth, or sixth aspect of the invention, the event display of the music data including the event sequence that controls the sound generation of the musical tone is switched to the waveform display. Therefore, after switching to the waveform display, the user The music data consisting of can be edited by the same operation method as the audio data.

According to the second aspect of the present invention, the corresponding waveform image data or default waveform image data is acquired based on the timbre information acquired from the musical tone signal generating means, and based on the acquired waveform image data, Since the music data is displayed as a waveform, even if the tone color of the music data is the same, a different waveform display can be obtained by the tone signal generating means.

According to the fourth aspect of the invention, the waveform image data instructed to be edited in the displayed waveform image is changed and displayed in response to the input of the editing instruction by the user, and the music data is converted in the converting step. Is changed based on the editing instruction converted by. In other words, even if the display is switched from the event display to the waveform display, the music data consisting of the event sequence remains the music data consisting of the event sequence and is not audio data. When an editing operation is performed, the music data parameters are changed. As described above, the editing method can be used in accordance with the editing method for audio data, and the editing function unique to music data including event sequences can be used.

It is a block diagram which shows schematic structure of the music data editing apparatus which concerns on one embodiment of this invention. It is a block diagram which shows each function structure of the music data editing apparatus of FIG. 1, and an external apparatus. It is a figure which shows an example of the waveform displayed by waveform image data. It is a figure which shows a part of screen when a sequence of a certain music data is displayed on the display in FIG. 1 for every track. 3 is a flowchart showing a procedure of a MIDI track waveform display process executed by the music data editing apparatus of FIG. 1, in particular, a control unit in FIG. 2. A flowchart (a) showing a procedure of MIDI data editing processing executed by the music data editing apparatus of FIG. 1, particularly the control unit in FIG. 2, and the waveform image data in the area of FIG. FIG. 6B is a diagram ((b)) in which the envelope is extracted.

  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 music data editing apparatus 100 according to an embodiment of the present invention. The music data editing apparatus 100 of this embodiment is a PC on which DAW software is installed and started.

  As shown in FIG. 1, a music data editing apparatus 100 includes an operation input unit 1 including a character input keyboard and a pointing device (for example, a mouse), a CPU 2 that controls the entire apparatus, and a basic control program executed by the CPU 2. ROM 3 for storing (BIOS: Basic Input Output System) and various table data, RAM 4 for temporarily storing inputted performance information (performance event), various input information and calculation results, and the DAW software A storage device 5 for storing various application programs, OS (Operating System), various music data, various data, and the like, a display 6 composed of a large LCD (Liquid Crystal Display), for example, and an external MIDI device This electronic keyboard instrument 200 is connected to the electronic keyboard instrument 200. A communication interface (I / F) 7 for transmitting and receiving data, the input performance information, performance information (performance event) obtained by reproducing any music data stored in the storage device 5 and the like Is converted into a musical sound signal, a sound source / effect circuit 8 for imparting various effects to the musical sound signal, and a musical sound signal from the sound source / effect circuit 8 is converted into sound, for example, DAC (Digital-to- Analog Converter), and a sound system 9 such as an amplifier and a speaker.

  The components 1 to 8 are connected to each other via a bus 10, an electronic keyboard instrument 200 is connected to the communication I / F 7, and a sound system 9 is connected to the sound source / effect circuit 8.

  The storage device 5 is, for example, a storage medium such as a flexible disk (FD), a hard disk (HD), a CD-ROM, a DVD (Digital Versatile Disc), a magneto-optical disk (MO), and a semiconductor memory, and its driving device. The storage medium may be detachable from the drive device, or the storage device 5 itself may be detachable from the music data editing device 100. Alternatively, neither the storage medium nor the storage device 5 may be detachable.

  As the communication I / F 7, for example, a music dedicated wired I / F that exclusively transmits and receives music signals such as MIDI signals, general-purpose short-distance wired I / F such as USB (Universal Serial Bus) and IEEE 1394, Ethernet (registered trademark) General-purpose network I / F such as wireless LAN (local area network) and Bluetooth (registered trademark) can be used. In this embodiment, the USB is adopted as the communication I / F 7. However, instead of this, other types of I / F may be adopted, and other types of I / F may be added thereto. It may be.

  As described above, the music data editing apparatus 100 is constructed on a general-purpose PC to which the electronic keyboard instrument 200 is externally connected. However, a musical instrument other than a keyboard (such as a stringed instrument type or a percussion instrument type) or a performance operator is used. It is possible to construct a general-purpose PC externally connected to a sound source that does not have a sound source, or to construct a dedicated device instead of a general-purpose PC. However, as will be described later, the present invention is not limited to “sound source” as long as the name is “musical sound generation device” as long as it can generate music, Since “timbre information” is acquired and waveform image data (group) is selected (acquired) based on this “timbre information”, at least one sound source is required inside or outside the music data editing apparatus of the present invention. is there.

  FIG. 2 is a block diagram showing functional configurations of the music data editing apparatus 100 and the electronic keyboard instrument 200. As shown in the figure, the music data editing apparatus 100 includes a control unit 101, a storage unit 102, an operation input unit 1, and a display 6. The electronic keyboard instrument 200 includes a performance operation unit 201, a musical tone generation unit 202, and an output unit 203.

  The operation input unit 1 is the same as the operation input unit 1 in FIG. 1, and the user inputs MIDI data itself or edits various data including already input MIDI data using the operation input unit 1. Or enter instructions such as deletion.

  The control unit 101 is mainly configured by the CPU 2, the ROM 3, and the RAM 4 of FIG. 1, and is realized by the CPU 2 executing control processes including the processes of FIGS. 5 and 6 described later.

  The storage unit 102 is configured by the storage device 5 of FIG. 1, and stores two types of music data, MIDI data 102a and audio data 102c. Since the present invention is characterized in that the MIDI data 102a is displayed in a waveform, the MIDI data 102a needs to be stored in the storage unit 102, but the audio data 102c needs to be stored in the storage unit 102. There is no. However, since the DAW software adopted in this embodiment can handle both MIDI data and audio data, it is assumed that the storage unit 102 stores not only the MIDI data 102a but also the audio data 102c. Note that both the MIDI data 102a and the audio data 102c are composed of a plurality of MIDI data and audio data. The music data to be edited by the music data editing apparatus 100 is usually composed of a plurality of parts (tracks), and each part is arbitrarily selected and assigned by the user from the MIDI data 102a and the audio data 102c.

  The storage unit 102 also stores waveform image data 102b used when displaying waveform data of MIDI data included in the music data to be edited. The waveform image data is for displaying the sound generation state corresponding to the note event by time and amplitude (for example, transition of amplitude according to passage of time).

  FIG. 3 is a diagram illustrating an example of a waveform displayed by the waveform image data. The waveform shown in FIG. 6A is displayed based on the waveform image data 102b used in the present embodiment, and faithfully reproduces the transition of the amplitude of the tone to be generated. The waveform in FIG. 5B is obtained by extracting the envelope from the waveform in FIG. In the waveform (b), only the outline of the envelope is displayed, but the inside of the envelope may be filled and displayed. The waveform in FIG. 6C roughly shows the transition of the amplitude, and the waveform in FIG. 4D is displayed with a shape different from that of the waveform in FIG. In the present embodiment, as the waveform image data 102b, one that displays a typical waveform (a) is adopted, but other waveforms (b) to (d) and other waveforms are displayed. A thing may be adopted. In short, as long as different sound generation states can be displayed in different display modes based on time and amplitude, the sound generation state may not be faithfully reproduced.

  For example, even in the case of the sound of “piano tone C3 (do)”, the sound generation state is completely different between the eighth note and the whole note, and between the forte and the piano, so the waveform shape differs depending on the sound generation state. However, if waveform image data is prepared corresponding to every element that makes the waveform shape different, such as pitch (note number), note length, velocity, etc., the number of waveform image data increases, resulting in its storage capacity. Is too large to be realistic. Therefore, the storage unit 102 stores waveform image data 102b corresponding to some predetermined conditions (or elements), and for note events whose sounding state is different from the above conditions, the waveform image data 102b ( (Corresponding) is expanded or reduced in the vertical direction (amplitude direction) or horizontal direction (time direction). Enlargement / reduction may be performed, for example, by storing a correspondence table (not shown) in the storage unit 102 and referring to it. Alternatively, the waveform image data not stored in the storage unit 102 may be acquired from the outside of the music data editing apparatus 100 (for example, a server connected via the Internet) and used. Alternatively, the waveform image data 102b may be acquired from the outside without being stored in the storage unit 102.

  The waveform image data 102b includes waveform image data corresponding to the number of note numbers for each of a plurality of timbres. That is, a waveform image data group composed of a plurality of waveform image data is included for each tone color. Even if the timbre name is the same MIDI data, the sound generated by the sound source to which the note event obtained by reproducing the MIDI data is supplied is different, so that the waveform image data group is different depending on the sound source. Is preferred. Therefore, a plurality of waveform image data groups may be included even with the same timbre name. Each waveform image data group in this case is distinguished by tone color information that each sound source uses for generating its own tone. The specific contents of the “tone color information” will be described later with reference to FIG.

  The display 6 is the same as the display 6 in FIG. 1 and displays music data to be edited. The display mode will be described later with reference to FIG.

  The performance operation unit 201 includes a keyboard, a slider, a joystick, a wheel, a dial, and the like, and inputs performance information when used by a user.

  The musical sound generation unit 202 converts the performance information supplied from the performance operation unit 201 into a musical sound signal, gives various effects to the musical sound signal as appropriate, and outputs the result to the output unit 203. This process is the same as the process executed by the sound source / effect circuit 8 of the music data editing apparatus 100. The musical sound generation unit 202 is configured to be able to transmit and receive MIDI messages with the control unit 101. When the controller 101 reproduces music data and generates a musical sound, the controller 101 does not generate it from its own sound source / effect circuit 8 but generates it from the musical sound generator 202. That is, the music data editing apparatus 100 of the present embodiment uses the electronic keyboard instrument 200 as an external sound source. Therefore, the control unit 101 transmits data obtained by reproducing the music data to the tone generation unit 202 in the form of a MIDI message. Assuming that the music data to be played back consists of both MIDI data and audio data, when playing back the MIDI data, the control unit 101 transmits the MIDI message obtained by the playback to the musical tone generation unit 202 as it is. When the audio data is reproduced, the audio data obtained by the reproduction is embedded in, for example, a system exclusive message (hereinafter abbreviated as “SysEx”) and transmitted to the musical sound generation unit 202. When receiving the MIDI message from the control unit 101, the tone generation unit 202 analyzes the MIDI message, generates a tone signal according to the analysis result, and outputs it to the output unit 203. Further, the musical tone generation unit 202 responds to an inquiry from the control unit 101 using, for example, a program change message (hereinafter abbreviated as “PrgCh”), for example, the tone color information used by the musical tone generation unit 202 for musical tone generation, for example, SysEx. It is embedded in and transmitted to the control unit 101. Note that how to use the “tone color information” received by the control unit 101 will be described later with reference to FIG. 5 together with specific contents of the “tone color information”.

  The output unit 203 converts the tone signal supplied from the tone generation unit 202 into sound. This process is the same as the process executed by the sound system 9 of the music data editing apparatus 100. In the present embodiment, the sound is generated from the speaker. However, the present invention is not limited to this, and the sound may be generated from the headphone (speaker). The same applies to the sound system 9.

  As described above, in this embodiment, the tone generator uses the tone generator 202 in the electronic keyboard instrument 200, but of course, the tone generator / effect circuit 8 in the music data editing apparatus 100 may be used. Alternatively, the sound source to be sounded may be changed depending on the music data or part to be played. As long as the sound source inputs performance information (specifically, a performance event such as a note event), and generates and outputs a musical sound signal corresponding to the performance information, any musical sound generation method may be used. Further, the sound source may be configured only by hardware, may be configured only by software, or may be configured by both hardware and software.

  The control process executed by the music data editing apparatus configured as described above will be described first with reference to FIG. 2 and FIG. 4 and then described in detail with reference to FIG. 5 and FIG.

The music data editing apparatus 100 is mainly composed of
(1) When displaying a sequence of music data including MIDI data on at least one part (track), a display (hereinafter referred to as a pitch) and a tone length of each note event constituting the MIDI data in a normal display mode Waveform display processing of a MIDI track that switches from “event display” to the waveform display that is the normal display when displaying audio data;
(2) When the user performs an editing operation on the waveform displayed by the waveform display processing of (1) above, editing MIDI data that changes the parameters of the MIDI data to be edited according to the editing operation processing;
Execute.

  FIG. 4 is a diagram showing a part of a screen when a certain music data sequence is displayed on the display 6 for each track. FIG. 6A shows a screen 61 in which audio tracks are displayed in waveforms, MIDI tracks are displayed in events, and FIG. 5B shows a screen 62 in which MIDI tracks are also displayed in waveforms.

  Before the waveform display process (1) is executed, a screen 61 shown in FIG. 4A is displayed on a part of the display 6. In FIG. 4A, the audio track (track 1) is a waveform display, and the sound generation state is displayed with a waveform representing the time axis (horizontal direction) and the amplitude (vertical direction). Since it is stereo data, the left and right waveforms are displayed. The MIDI track (tracks 2 and 3) is an event display, and each note event constituting the MIDI data is displayed by a dot or a line representing a pitch or a tone length. In addition to dots and lines, other symbols (circles, rectangles, notes, etc.) and colors representing the meaning of each event may be included.

  In this display state, for example, when the user clicks the right mouse button, a pop-up menu is displayed at the position of a cursor (not shown). When the user selects “waveform display” described in the menu, the waveform display process (1) is executed. As a result, the screen 61 is switched to the screen 62 in FIG. That is, the MIDI tracks of tracks 2 and 3 are switched from the event display to the waveform display, and the new track 4 appears as a bounce track that displays the bounce waveform image data in which the waveform images of tracks 2 and 3 are combined. . However, at this time, the area 63 is not yet displayed in the screen 62.

  Thus, since the event display of the MIDI track is switched to the waveform display, after switching to the waveform display, the user can also edit the MIDI data of the MIDI track by the same operation method as the audio data of the audio track. Can do. As a result, the efficiency of the user's editing work is improved.

  Next, after the user designates a partial area on the screen 62 in FIG. 4B, for example, the area 63 with the cursor, the user performs some editing operation on the waveform image data in the area 63, for example, the waveform image. When an operation for deforming the shape is performed, the MIDI data editing process (2) is executed. In this (2) MIDI data editing process, the operation position and operation amount are detected, the waveform image data is edited (in this case, deformed) according to the detected operation position and operation amount, and the editing results are sequentially displayed. To do. Furthermore, the amount of change before and after editing the coordinates provided at a predetermined position of the waveform image data is calculated, and the MIDI parameter corresponding to the waveform image data is changed according to the calculated amount of change. That is, even if the MIDI data of the MIDI track is switched from the event display to the waveform display, the MIDI data remains the MIDI data and is not the audio data, so that the display waveform is edited. Then, the MIDI parameter is changed. As described above, the editing method can be adapted to the editing method for audio data, and the editing function unique to MIDI data can be used.

  Next, this control process will be described in detail.

  FIG. 5 is a flowchart showing the procedure of the MIDI track waveform display process executed by the music data editing apparatus of this embodiment, particularly the control unit 101. Since this waveform display process corresponds to the waveform display process of (1), as described above, the user clicks the right button of the mouse while the screen 61 of FIG. 4A is displayed. It is activated when “Waveform display” described in the pop-up menu displayed by is selected.

  When the waveform display process is activated, the control unit 101 first resets the counter n to the initial value “1” (step S1). The counter n is, for example, a software counter provided at a predetermined position in the RAM 4.

  Next, the control unit 101 determines whether or not the track (hereinafter referred to as “track n”) indicated by the counter n in the music data to be edited (the target of this waveform display process) is a MIDI track (step S2). . As a result of the determination, when the track n is a MIDI track, the control unit 101 executes the processing of steps S3 to S8 and then proceeds to step S9. On the other hand, when the track n is not a MIDI track, the control unit 101 , Steps S3 to S8 are skipped, and the process proceeds to Step S9.

  In step S9, the control unit 101 determines whether or not the track n is the last track of the music data. As a result of the determination, if it is not the last track, the control unit 101 increments the counter n by “1” (step S10), advances to the next track, and then returns the process to step S2. On the other hand, at the last track, the control unit 101 advances the process to step S11.

  Now, the music data to be edited is the music data displayed in FIG. 4A, that is, the guitar 1 (guitar) audio data on track 1, the piano 2 (Piano) MIDI data on track 2, and the track 3 Assume that drum data (Drums) MIDI data is music data assigned thereto. In the case of this music data, the control unit 101 increments the counter n for the audio track 1 (step S2 → S9 → S10), and proceeds to the next track 2.

  Since track 2 is a MIDI track, the control unit 101 transmits the timbre number of the MIDI data assigned to track 2 to the sound source (step S3). As described above, MIDI data of piano timbre is assigned to track 2. However, since there are usually a plurality of piano timbres depending on the type of piano, the control unit 101 uses the timbre currently assigned to track 2. Send the number. In the present embodiment, the timbre number is transmitted by PrgCh as described above, but is not limited thereto, and may be transmitted by another message such as SysEx. In the present embodiment, the “sound source” of the transmission destination of PrgCh is the tone generation unit 202 of the electronic keyboard instrument 200 as described above.

  When receiving the PrgCh, the tone generation unit 202 embeds the timbre information used for generating the tone in the SysEx and transmits it to the control unit 101 as described above. The control unit 101 receives this SysEx, and acquires timbre information embedded in the received SysEx (step S4). In this embodiment, the timbre information is a parameter indicating the characteristics of the tone waveform of the timbre number, specifically, “ADSR”. “ADSR” is an acronym for the musical sound waveform Attack (rise), Decay (attenuation), Sustain (retention after attenuation), and Release (resonance). Given a directional parameter value, the shape of the waveform can be identified.

  Next, the control unit 101 determines whether or not the waveform image data (group) that matches the acquired ADSR exists in the waveform image data 102b of the storage unit 102 (step S5). As a result of the determination, if the waveform image data (group) is in the waveform image data 102b, the control unit 101 selects the waveform image data (group) (step S6), while the waveform image data (group). Is not in the waveform image data 102b, the control unit 101 selects default waveform image data (group) in the waveform image data 102b (step S7).

  In the present embodiment, each waveform image data (group) included in the waveform image data 102b is associated with an ADSR indicating the characteristics of the musical sound waveform. Therefore, even if the timbre names are the same, if the ADSR is different, the waveform image data (group) is treated as different. It is not practical to store waveform image data (group) for all of the different ADSRs because of the capacity of the storage unit 102 and the trouble of collecting or creating waveform image data (group). ADSR waveform image data (group) is stored. For this reason, it may happen that the waveform image data (group) matching the ADSR transmitted from the sound source is not stored in the storage unit 102, so the determination in step S5 is necessary. The default waveform image data selected when the waveform image data (group) is not stored in the storage unit 102 may be specific waveform image data (group) fixedly determined in advance, or step S5. The waveform image data (group) close to the ADSR acquired at the time of the determination may be determined dynamically by the control unit 101.

  Next, the control unit 101 acquires and displays the waveform image data corresponding to each note event included in the MIDI data assigned to the track 2 from the selected waveform image data (group) (step S8). Thereby, the track 2 is switched from the event display of FIG. 4A to the waveform display of FIG. Since the track 2 is not the last track of the music data, the control unit 101 advances to the next track 3 (step S10), and then returns the process to the step S2.

  Since the track 3 is a MIDI track like the track 2, the control unit 101 performs the same process as the process performed on the MIDI data of the track 2 also on the MIDI data of the track 3 (steps S3 to S8). Thereby, the track 3 is also switched from the event display of FIG. 4A to the waveform display of FIG. Since the track 3 is the last track of the music data, the control unit 101 advances the process to step S11.

  In step S11, the control unit 101 generates bounce waveform image data combining the waveform images of all MIDI tracks, that is, tracks 2 and 3. In step S12, the control unit 101 displays the generated bounce waveform image data on a new track. As a result, a bounce waveform is displayed on the new track 4 as shown in FIG. Thereafter, the control unit 101 ends the waveform display process.

  In FIG. 4B, the bounce waveform of the track 4 is obtained by simply synthesizing the waveform images of the tracks 2 and 3, but this is not restrictive, and the time axis (integer value (1 in FIG. 4) , 3, ...) may be displayed as an enlarged or reduced horizontal axis), a part cut out, a part of the cut out time axis enlarged or reduced, etc. May be displayed. Then, the change of the time axis or a partial range may be arbitrarily set by the user.

In the present embodiment, the tone color information transmitted by the tone generator 202 is a parameter indicating the characteristics of the tone waveform of the tone number, but is not limited thereto. As another example,
(21) Waveform image data itself;
(22) Information indicating the type or model number of the sound source (for example, ID);
And so on.

  In the case of the above (21), the tone generation unit 202 embeds the waveform image data (group) corresponding to the received tone number in the SysEx and transmits it. Alternatively, in addition to the timbre number, the control unit 101 also transmits a note number (note number of each note event included in the MIDI data), and the tone generation unit 202 receives the waveform image data corresponding to the received timbre number. Of the (group), the waveform image data of the received note number may be embedded in the SysEx and transmitted. In this way, the tone generation unit 202 does not have to transmit all the waveform image data (group) corresponding to the received timbre number, so the transmission time of the waveform image data can be shortened. When the SysEx in which the waveform image data (group) is embedded is transmitted from the musical sound generation unit 202, the control unit 101 receives this, extracts the waveform image data (group) from the received SysEx, and stores it in the storage unit 102. Remember. That is, the extracted waveform image data (group) becomes a part of the waveform image data 102b. Note that the tone generator 202 may not have waveform image data (group) corresponding to the received tone number. In this case, the tone generation unit 202 may transmit default waveform image data (group) possessed by itself, or may transmit information indicating that there is no error or the like. Good.

  In the case of (22) above, the control unit 101 searches the waveform image data 102b for waveform image data (group) that matches both the received ID and the tone number of the MIDI data assigned to the MIDI track. Become. In this case, each waveform image data (group) included in the waveform image data 102b needs to be associated with an ID and a timbre number instead of ADSR. Of course, even if each waveform image data (group) is associated with ADSR, for example, if the table is configured so that the ADSR can be identified from the ID and timbre number, the association between each waveform image data (group) is possible. , ADSR need not be changed to ID and tone number. Since the other processes in the case of (22) are almost the same as the processes described above in the present embodiment, the description thereof is omitted.

  When the MIDI track is switched from the event display to the waveform display by the waveform display processing of FIG. 5, the user performs any operation on the waveform display, for example, an operation for designating a partial area with the cursor. The unit 101 activates the MIDI data editing process (2). FIG. 6A is a flowchart showing the procedure of the MIDI data editing process.

  If the user now designates the area 63 in the screen 62 of FIG. 4B and performs some editing operation on the waveform image data in the area 63, the control unit 101 specifies the operation position, An operation amount is detected (step S21). FIG. 6B shows a diagram in which the waveform image data in the region 63 is enlarged and the envelope 64 is extracted. On one side (upper side) of the extracted envelope 64 in the region 63, four coordinate points p1 to p4 are displayed at positions indicating the feature points. The coordinate point p1 indicates the end point of the attack in ADSR, the coordinate point p2 indicates the end point of Decay, the coordinate point p3 indicates the end point of Sustain, and the coordinate point p4 is the release point. The end point of (Release) is shown. If the user's editing operation is to change the shape of the envelope 64 in the region 63, the control unit 101 determines from which position in the region 63 what deformation is instructed in step S21. To detect.

  Next, the control unit 101 edits the waveform image data according to the detected operation position and operation amount (step S22). The edited waveform image data is sequentially displayed. As a result, the envelope 64 in the region 63 is deformed as instructed by the user, and the coordinate points p1 to p4 are also moved to corresponding positions on the deformed envelope.

  Next, the control unit 101 calculates the amount of change in coordinates before and after editing (step S23). That is, for each of the coordinate points p1 to p4, the amount of change from the coordinates before editing to the coordinates after editing is calculated.

Then, the control unit 101 changes the corresponding MIDI parameter in accordance with the calculated coordinate change amount (step S24), and then ends the editing process of the MIDI data. The movement of the coordinate points p1 to p4 and the type of the MIDI parameter to be changed thereby are, for example, (31) Up / down movement of the coordinate point p1: velocity;
(32) Left / right movement of coordinate point p1: Attack time, decay time;
(33) Up / down movement of coordinate points p2, p3: sustain level;
(34) Left / right movement of coordinate points p2, p3: decay time, release time;
(35) Left / right movement of coordinate point p4: release time, note-off timing;
Are associated with each other. Since the storage unit 102 stores in advance a table (not shown) indicating the change amount of the MIDI parameter with respect to the change amount of the coordinate, the control unit 101 calculates the change amount of each of the calculated coordinate points p1 to p4. By searching the table based on the above, the change amount of the MIDI parameter is determined, and the value of the target MIDI parameter is changed by the determined change amount.

  When the envelope 64 in the region 63 is deformed, a state in which only one coordinate point of the coordinate points p1 to p4 moves and the other three coordinate points do not move hardly occurs. Therefore, the coordinate point p1 ~ P4, at least some of the plurality of coordinate points move simultaneously. For example, if the coordinate point p1 is moved, not only the coordinate point p1 but also the coordinate points p2 and p3 are moved. Therefore, the values of a plurality of types of parameters such as velocity, attack, decay, sustain and release are set. It is changed at the same time.

The change of the shape of the envelope 64 in the area 63 is not limited to the direct instruction method as described above. For example, when the user designates the area 63 or its vicinity with the cursor and clicks the right button of the mouse, the edit menu is displayed. Will pop up. When the user selects one of the edit items such as “effect”, “reverse”, and “pitch shift” described in the menu, the change of the shape according to the selected edit item is instructed and executed. You may be made to do. For example, (41) effects: reverb, chorus, etc .;
(42) Reverse: Program change;
(43) Pitch shift: pitch, pitch bend, note number (normal tone only), etc .;
Are associated with each other.

  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 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 program code and the storage medium storing the program code constitute 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 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 CPU 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.

DESCRIPTION OF SYMBOLS 1 ... Operation input part (input means), 6 ... Display (display means, 1st display means, 2nd display means), 101 ... Control part (1st display means, 2nd display means, waveform image acquisition) means)

Claims (6)

A first display step for displaying an event on the display means of music data consisting of an event sequence for controlling the sound generation;
For each of the note events included in the music data, a waveform image acquisition step for acquiring corresponding waveform image data;
Based on the acquired waveform image data by the waveform image acquisition step, the music data have a second display step of waveform displayed on said display means,
In the waveform image acquisition step, if the corresponding waveform image data exists, the corresponding waveform image data is acquired, and if the corresponding waveform image data does not exist, default waveform image data is acquired. Characteristic music data editing method. A timbre information acquisition step of acquiring timbre information from a musical tone signal generating means for generating a musical tone signal based on the music data;
In the waveform image acquisition step, based on the obtained tone color information by the tone color information acquiring step, music according to claim 1, characterized in that to obtain the corresponding waveform image data or the default waveform image data Data editing method. 3. The music data editing method according to claim 2, wherein the default waveform image data is specific waveform image data fixedly determined in advance or waveform image data close to the acquired timbre information. When the user inputs an edit instruction to the waveform image displayed on the display means using an input means for inputting an edit instruction, the input edit instruction is converted into an edit instruction for the music data. A conversion step to
In response to an input of the editing instruction by the user, the waveform image data instructed to edit in the displayed waveform image is changed and displayed, and the music data is converted based on the editing instruction converted by the converting step. The music data editing method according to any one of claims 1 to 3, further comprising a control step of controlling to change. A program for causing a computer to execute a music data editing method,
The music data editing method is:
A first display step for displaying an event on the display means of music data consisting of an event sequence for controlling the sound generation;
For each of the note events included in the music data, a waveform image acquisition step for acquiring corresponding waveform image data;
Based on the acquired waveform image data by the waveform image acquisition step, the music data have a second display step of waveform displayed on said display means,
In the waveform image acquisition step, if the corresponding waveform image data exists, the corresponding waveform image data is acquired, and if the corresponding waveform image data does not exist, default waveform image data is acquired. A featured program. A first display means for displaying an event of music data comprising an event sequence for controlling the sound generation;
Waveform image acquisition means for acquiring corresponding waveform image data for each of the note events included in the music data;
Based on the acquired waveform image data by the waveform image acquiring means, the music data have a second display means for the waveform displayed on said display means,
The waveform image acquisition means acquires the corresponding waveform image data if the corresponding waveform image data exists, and acquires the default waveform image data if the corresponding waveform image data does not exist. A music data editing device.

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