JP2007011136A - Music data editing device and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize a music data editing device improving the expression power of performance. <P>SOLUTION: In response to execution of editing processing, a target musical piece to be edited is selected by musical piece selection processing executed through a step SB3. Thereafter, in execution processing executed through a step SB8, maximum sounds wherein the sound pitch is changed maximally and minimum sounds wherein the sound pitch is changed minimally are detected from music data representing respective sounds constituting the selected musical piece, and sounds immediately before maximum sounds wherein the sound pitch is increased continuously in a plurality of sounds to be changed maximally and sounds immediately before minimum sounds wherein the sound pitch is decreased continuously in a plurality of sounds to be changed minimally, out of detected maximum sounds and minimum sounds are designated as highlight sounds, and velocities VEL (sound volumes) in music data corresponding to the highlight sounds are increased so as to emphasize the designated highlight sounds. Since parts characterizing an impression of the musical piece are emphasized, the expression power of performance is improved. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a song data editing apparatus and a song data editing program suitable for use in, for example, a sequencer.

  In many cases, an automatic performance apparatus that reproduces music data composed of pitches and sound generation timings of each sound to be performed includes a music data editing apparatus that edits the contents of the music data. For example, in the automatic performance device disclosed in Patent Document 1, song data including timbre identification data for identifying non-drum / drum timbres is edited in units of performance tracks and events, and drum timbres are recorded on one performance track. And a non-drum timbre can be mixed.

JP 2002-169547 A

By the way, the technique disclosed in Patent Document 1 has a problem that it is only possible to mix drum timbres and non-drum timbres in one performance track, and performance expressiveness cannot be improved.
The present invention has been made in view of such circumstances, and an object thereof is to provide a song data editing apparatus and a song data editing program capable of improving performance expression.

  In order to achieve the above object, according to the first aspect of the present invention, there is provided music data storage means for storing music data representing each sound constituting music, and music data stored in the music data storage means. Highlight sound extraction means for extracting a highlight sound that characterizes the impression of the song, and of song data corresponding to the highlight sound extracted by the highlight sound extraction means among the song data stored in the song data storage means And music data changing means for emphasizing and changing musical tone elements.

  According to a second aspect of the present invention, song data storage means for storing song data representing each sound constituting a song, and a highlight sound characterizing the impression of the song from the song data stored in the song data storage means Highlight sound extracting means for extracting the song data, reproducing means for reproducing the song data stored in the song data storage means, and when the song data reproduced by the reproducing means corresponds to the highlight sound, And music data changing means for emphasizing and changing musical tone elements.

  According to a third aspect of the present invention, which is dependent on any one of the first and second aspects, the pitch is at a position where a change in pitch included in the song data stored in the song data storage means is maximized. Detects the maximum sound and the minimum sound that is the pitch at the minimum position, and detects the maximum sound and the sound immediately before the maximum sound that has increased continuously from the minimum sound to the maximum from the predetermined sound. And a sound immediately before the minimum sound that decreases continuously toward a minimum for a predetermined sound is extracted as a highlight sound that characterizes the impression of the song.

  In the invention according to claim 4 that depends on any one of claims 1 to 2, the change in pitch from the song data stored in the song data storage means increases continuously to a maximum for a predetermined period. In this case, the tune is composed of one sound before the sound at the maximum position and one sound before the sound at the minimum position when the change in pitch decreases toward the minimum continuously for a predetermined period. It is characterized by being extracted as a highlight sound that characterizes the impression.

  The invention according to claim 5 that depends on any one of claims 1 to 2 is characterized in that the music data changing means emphasizes the music data corresponding to the highlight sound by increasing the volume.

  In the invention according to claim 6 that depends on any one of claims 1 and 2, the music data changing means, when the highlight sound constitutes a chord, It is characterized in that the highlight sound in the chord is emphasized by decreasing the volume of the music data corresponding to each chord constituent sound.

  According to the seventh aspect of the present invention, the song data storage means for storing each piece of music constituting the song and storing the song data including the exclusive message, and the impression of the song from the song data stored in the song data storage means. A highlight sound extracting means for extracting a highlight sound characterizing the music, and an exclusive message of music data corresponding to the highlight sound extracted by the highlight sound extracting means among the music data stored in the music data storage means And music data changing means for setting filter characteristic data for emphasizing the frequency characteristics at the time of music data reproduction.

  According to the eighth aspect of the present invention, highlight sound extraction processing for extracting a highlight sound characterizing the impression of a song from song data representing each sound constituting the song, and song data representing each sound constituting the song Among them, the computer executes a music data change process for changing so as to emphasize a musical tone element of music data corresponding to the highlight sound extracted by the highlight sound extraction process.

  According to the first and eighth aspects of the invention, the highlight sound characterizing the impression of the song is extracted from the song data representing each sound constituting the song, and the song data corresponding to the extracted highlight sound is extracted. Since the musical tone element is emphasized and changed, the highlight sound that characterizes the impression of the song is emphasized and the performance expression can be improved.

  According to the second aspect of the present invention, the highlight sound characterizing the impression of the song is extracted from the song data representing each sound constituting the song, and is reproduced when the song data is reproduced. When the song data corresponds to the highlight sound, the musical tone element of the song data is emphasized and changed, so that the highlight sound that characterizes the impression of the song is emphasized and the performance expression can be improved.

  According to the fifth aspect of the present invention, since the volume of the song data corresponding to the highlight sound is increased and emphasized, the performance expression can be improved.

  According to the sixth aspect of the present invention, when the highlight sound constitutes a chord, the volume of the song data corresponding to each of the other chord constituent sounds other than the highlight sound is reduced to increase the high sound in the chord. Since the light sound is emphasized, the performance expression can be improved.

  According to the seventh aspect of the present invention, music data including an exclusive message is stored while representing each sound constituting the music, and a highlight sound characterizing the impression of the music is extracted from the stored music data. In addition, filter characteristic data that emphasizes the frequency characteristics during song data playback is set as an exclusive message of the song data corresponding to the extracted highlight sound, so the highlight sound that characterizes the impression of the song is emphasized for performance expression The power can be improved.

  In the following, the outline of the present invention will be described first, and then embodiments of the present invention will be described with reference to the drawings.

A. Summary of the Invention
The present invention detects a highlight portion of a song from song data representing each sound constituting the song, and automatically edits the corresponding song data so as to emphasize the detected highlight portion. The highlight portion refers to a sound that characterizes the impression of a song, such as a so-called “rust” portion of the song. In the present embodiment, highlighting a highlight location refers to a processing operation that increases (or decreases) the velocity (volume) level of music data corresponding to a highlight location, as will be described later. If music data with such editing is automatically played, points that characterize the impression of the music are emphasized, so that performance expression can be improved.

B. First Embodiment (1) Configuration FIG. 1 is a block diagram showing a configuration of a first embodiment of the present invention. In this figure, the operation unit 10 includes input operation elements such as a key input keyboard and a mouse in addition to the power switch, and generates an event corresponding to the input operation. This event is captured by the CPU 11. The CPU 11 executes various control programs stored in the ROM 12 and controls each part of the apparatus in response to an event generated by the operation unit 10, and its characteristic processing operation will be described in detail later. The ROM 12 stores various control programs and various screen data loaded into the CPU 11. The various control programs include a main routine, editing process, song selection process, and execution process, which will be described later. The various screen data is data that causes the display unit 16 to display an initial screen SG, an editing initial screen HSG, an execution screen JG, and an end screen EG described later.

  The RAM 13 includes a work area for temporarily storing various register / flag data used for processing of the CPU 11 and a data area for storing music data supplied from the outside via the MIDI interface 17. Here, the configuration of music data stored in the data area of the RAM 13 will be described with reference to FIG. In the data area of the RAM 13, a plurality of songs [0] to [N] are stored as shown in FIG. One song is formed from song data [AD] to [AD + n] corresponding to the read address AD and data END indicating the song end. One piece of music data [AD] designates a delta time ΔT representing an elapsed time (relative time) from the previous event, an event EV for identifying event contents such as note-on or note-off, and a pitch for sounding (or muting). The note NOTE to be played and the velocity VEL representing the sound volume.

  The sound source 14 is configured by a well-known waveform memory reading method, and reproduces music data that the CPU 10 sequentially reads from the data area of the RAM 13 in synchronization with a specified tempo and outputs a musical sound signal. The sound system 15 D / A converts the musical tone signal output from the sound source 14 and then amplifies it to generate sound from the speaker SP. The display unit 16 displays various screens (initial screen SG, editing initial screen HSG, execution screen JG, and end screen EG) according to the operation state of the apparatus and the input operation of the operation unit 10 in accordance with a display control signal supplied from the CPU 11. Etc.). The MIDI interface 17 exchanges music data in the MIDI format with an external MIDI device under the control of the CPU 11. Music data supplied from an external MIDI device via the MIDI interface 17 is stored in the data area of the RAM 13 (see FIG. 2).

(2) Operation Next, the operation of the first embodiment will be described with reference to FIGS. In the following, first, the operation of the main routine will be described as the overall operation, and then various processing (music selection processing, execution processing, chord detection processing, maximum / minimum detection processing) that will form an editing process called from the main routine. , Operations of pitch detection processing and velocity conversion processing) will be described.

<Main routine operation>
When power is turned on in the first embodiment having the above configuration, the CPU 11 executes the main routine shown in FIG. 3 and proceeds to step SA1, resets various registers / flags stored in the RAM 13, Initialize the initial value. When the initialization is completed, the process proceeds to step SA2, and the initial screen SG is displayed on the display unit 16 based on the screen data read from the ROM 12. The initial screen SG is a screen including a reproduction icon IC1 and an edit icon IC2 as in the example illustrated in FIG.

  If the reproduction icon IC1 and the edit icon IC2 are not selected on the initial screen SG, the determination results in steps SA3 and SA5 are “NO”, the process returns to step SA2, and the initial screen display state is maintained. In the initial screen display state, for example, when the reproduction icon IC1 is selected and operated using the mouse of the operation unit 10, the determination result in step SA3 becomes “YES”, and the process proceeds to step SA5. In step SA5, for example, a reproduction process for automatically playing music data edited so as to emphasize a highlight portion by an editing process described later is executed, and then the process returns to step SA2 to return to the initial screen display state.

  On the other hand, if the edit icon IC2 is selected and operated in the initial screen display state, the determination result in step SA5 becomes “YES”, and the process proceeds to step SA6. In step SA6, after performing highlighting from the song data of a song selected as an object to be edited from among a plurality of songs and automatically editing the song data so as to highlight the highlighted portion, The process returns to step SA2 to return to the initial screen display state. Thereafter, the above steps SA2 to SA6 are repeated until the power is turned off.

<Operation of editing process>
Next, the editing process will be described with reference to FIGS. When the editing process is executed via step SA6 (see FIG. 3) of the main routine described above, the CPU 11 proceeds to step SB1 shown in FIG. 5 and displays the editing initial screen HSG on the display unit 16 based on the screen data read from the ROM 12. Display on the screen. The editing initial screen HSG is a screen including a song selection icon IC3 and a return icon IC4, as in the example illustrated in FIG. If the return icon IC4 is selected and operated while the editing initial screen HSG is displayed, the determination result in step SB4 becomes "YES", this processing is completed and the processing is returned to the main routine to return to the initial screen display state. Return.

  On the other hand, when the music selection icon IC4 is selected and operated while the editing initial screen HSG is displayed on the screen, the determination result in step SB2 is “YES”, and the editing target is selected from a plurality of songs through step SB3. A song selection process (described later) for selecting a song is executed. When the selection of the music to be edited by the music selection process is completed, the process proceeds to step SB5, and an execution screen JG including an execution icon IC5 and a return icon IC6 is displayed on the screen as shown in FIG. 6B.

  If the return icon IC6 is selected and operated while the execution screen JG is displayed on the screen, the determination result in step SB7 is “YES”, the process returns to step SB1, and the editing initial screen display state is restored. On the other hand, when the execution icon IC5 is selected and operated while the execution screen JG is displayed on the screen, the determination result in step SB6 is “YES”, and the execution process is performed via step SB8. In the execution process, as will be described later, a highlight portion is detected from the song data of the song to be edited, and the velocity VEL of the song data is changed so as to emphasize the detected highlight portion.

  When the song data has been edited in the execution process of step SB8, the process proceeds to step SB9, and an end screen EG including a return icon IC7 and an end icon IC8 is displayed on the screen as shown in FIG. 6C. To do. When the return icon IC7 is selected and operated while the end screen EG is displayed on the screen, the determination result in step SB10 is “YES”, and the process returns to step SB1 to return to the editing initial screen display state. On the other hand, when the end icon IC8 is selected and operated, the determination result in step SB11 is “YES”, this process is completed, the process is returned to the main routine, and the initial screen display state is restored.

<Operation of song selection process>
Next, the music selection process will be described with reference to FIGS. When this process is executed via the above-described editing process step SB3 (see FIG. 5), the CPU 1 proceeds to step SC1 shown in FIG. 7 to create a song list screen LG and display it on the display unit 16. . The song list screen LG is a screen that displays a list of song numbers, song names, and the like of a plurality of songs [0] to [N] stored in the data area of the RAM 13, as in the example illustrated in FIG. Next, in step SC2, the process waits until an edit target song is selected from the songs displayed in a list on the song list screen LG. When the edit target song is selected, the determination result in step SC2 is “YES”, the process proceeds to step SC3, the song number of the selected edit target song is stored in the pointer n, and the process is terminated. Hereinafter, the value of the pointer n is described as a music number n.

<Operation of execution processing>
Next, the operation of the execution process will be described with reference to FIG. When this processing is executed through the above-described editing processing step SB8 (see FIG. 5), the CPU 1 proceeds to step SD1 shown in FIG. 9 and selects from the song data of the song number n selected as the editing target. A chord detection process is performed in which the address AD (read address), elapsed time T, and note NOTE of the song data having a note-on event are extracted, and these are discriminated and held as chords and non-chords. Details of the chord detection process will be described later.

  Next, in step SD2, a difference value representing the slope of the pitch change is calculated from the note NOTE between adjacent note-on events in the song data, and the note-on event corresponding to the position where the difference is minimized is stored. The local maximum value for detecting the local minimum value address and the local minimum difference value corresponding to the local maximum value, the local maximum value address storing the note-on event corresponding to the local maximum position, and the local maximum difference value corresponding to the difference value are detected. -Perform minimum detection processing. Details of the maximum / minimum detection processing will be described later.

  Subsequently, in step SD3, the sound immediately preceding the maximum sound in which the previous five sounds continuously increased among the maximum sounds specified by the maximum value address detected in the maximum / minimum detection processing of step SD2 above. The highlight address VELAD [a] that designates the “maximum side highlight sound” and the minimum sound specified by the minimum address are the sounds immediately before the minimum sound that the previous five sounds have decreased continuously. A pitch detection process for determining a highlight address VELAD [a] designated as “minimum side highlight sound” is executed. Details of the pitch detection process will be described later.

  In step SD4, the velocity VEL in the music data designated by the highlight sound read address (highlight address VELAD [a]) detected in the pitch detection process in step SD3 is increased to increase the highlight sound. On the other hand, if the highlight sound constitutes a chord, after performing velocity conversion processing that reduces the velocity VEL of other chord constituent sounds other than the highlight sound and emphasizes the highlight sound in the chord This process is completed. Details of the velocity conversion process will be described later.

<Operation of chord detection processing>
Next, the operation of the chord detection process will be described with reference to FIGS. The chord detection process executed through step SD1 (see FIG. 9) of the execution process described above includes the note-on detection process executed through step SE1 and the step SE2 as shown in FIG. And an overlay detection process to be executed. Hereinafter, each operation of the note-on detection process and the overlay detection process will be described.

<Operation of note-on detection processing>
When the note-on detection process is executed via step SE1 in FIG. 10, the CPU 11 proceeds to step SF1 shown in FIG. 11, and resets the register T and the pointer a for measuring the elapsed time from the music start point to zero. Subsequently, in step SF2, the head address of the music data of music number n is stored in the register AD. Next, in step SF3, the music data [AD] specified by the register AD is read from the data area of the RAM 13. Subsequently, in step SF4, the delta time ΔT in the read music data [AD] is added to the register T to calculate the elapsed time (absolute time) from the music start time. Hereinafter, the value of the register T is referred to as elapsed time T. In step SF5, it is determined whether or not the event EV in the read music data [AD] is a “note on event”.

  If the event EV in the song data [AD] is a “note-off event”, the determination result is “NO”, and the flow proceeds to step SF9. In steps SF9 to SF10, the pointer a and the register AD are incremented. In step SF11, it is determined whether or not the value of the incremented register AD exceeds the final address. Note that the final address here refers to the address from which the data END representing the end of the song is read. If the data END representing the end of the song is not read, the determination result is “NO”, and the process returns to step SF3.

  On the other hand, if the event EV in the song data [AD] is a “note on event”, the determination result in step SF5 is “YES”, and the process proceeds to step SF6. In step SF6, the address AD of the music piece data [AD] having the “note on event” is stored in the address register AD [a] designated by the pointer a. Next, in step SF7, the value of the register T, that is, the elapsed time T of the music piece data [AD] having the “note on event” is stored in the register TIME [a] designated by the pointer a. Next, in step SF8, the note NOTE of the song data [AD] having the “note on event” is stored in the register NOTE [a] designated by the pointer a.

  Thus, when the detection of the address AD (read address), the elapsed time T and the note NOTE of the song data [AD] having the “note on event” is completed, the above-described steps SF9 to SF11 are executed. Thereafter, the above steps SF3 to SF11 are repeated until the incremented register AD exceeds the final address, and each time the song data [AD] having the “note on event” is detected, the address AD (read address), progress The time T and the note NOTE are stored in the address register AD [a], the register TIME [a], and the register NOTE [a], respectively. When the value of the incremented register AD exceeds the final address and the reading of the music piece data [AD] is completed, the determination result in step SF11 is “YES”, and this process is completed.

  As described above, in the note-on detection process, the song data [AD] having “note-on event” is searched from the song data [AD] of the song number n selected as the editing object by the song selection process (see FIG. 7). The address AD (read address), elapsed time T and note NOTE of the corresponding music piece data [AD] are held in the address register AD [a], register TIME [a] and register NOTE [a], respectively.

<Operation of overlay detection processing>
When the overlay detection process is executed via step SE2 in FIG. 10, the CPU 11 proceeds to step SG1 illustrated in FIG. 12, and resets the pointer a, the pointer b, and the pointer c to zero. Next, in step SG2, the contents of the address register AD [a] detected in the above-described note-on detection process are stored in the two-dimensional address register AD [b] [c] specified by the pointer b and the pointer c. cure. Similarly, in step SG3, the contents of the register NOTE [a] are stored again in the two-dimensional register NOTE [b] [c] designated by the pointers b and c.

  Next, in step SG4, an initial value “1” is set in the pointer d, and in the subsequent step SG5, the elapsed time T stored in the register TIME [a] designated by the pointer a, the pointer a and the pointer d, Whether or not the elapsed time T stored in the register TIME [a + d] specified by the added value a + d is substantially the same, that is, whether or not the elapsed time T between adjacent note-on events is a substantially matching chord. to decide. In the following, the description of the operation is divided into a chord case and a non-chord case.

a. In the case of a non-chord, if it is a non-chord, the determination result in step SG5 is “NO”, and the process proceeds to step SG6. In steps SG6 to SG7, the pointer c is reset to zero and the pointer b is incremented. Next, in step SG8, the value of the address register AD [a + d] specified by the addition value a + d of the pointer a and the pointer d is added to the two-dimensional address register AD [b] [c] specified by the pointer b and the pointer c. In the subsequent step SG9, the two-dimensional register NOTE [b] [c] specified by the pointer b and the pointer c is added to the register NOTE [a + d] specified by the addition value a + d of the pointer a and the pointer d. Store the value of.

  Then, the process proceeds to step SG10 and the pointer a is incremented. Subsequently, in step SG11, it is determined whether or not the incremented pointer a has exceeded the total number of note-on events. If the incremented pointer a does not exceed the total number of note-on events, the determination result is “NO”, and the process returns to step SG4 described above. On the other hand, if the incremented pointer a exceeds the total number of note-on events, the determination result in step SG11 is “YES”, and the present process ends.

b. In the case of chords On the other hand, when a chord whose elapsed time T between adjacent note-on events substantially matches is found, the determination result in step SG5 is “YES”, and the process proceeds to step SG12 and the pointer c is incremented. . Next, in step SG13, the two-dimensional address register AD [b] [c] designated by the pointer b and the pointer c is added to the address register AD [a + d] designated by the addition value a + d of the pointer a and the pointer d. Store the value.

  Subsequently, in step SG14, the value of the register NOTE [a + d] specified by the addition value a + d of the pointer a and the pointer d is added to the two-dimensional register NOTE [b] [c] specified by the pointer b and the pointer c. Store. In step SG15, the pointer d is incremented, and in the subsequent step SG16, it is determined whether or not the added value a + d of the pointer a and the incremented pointer d exceeds the total number of note-on events. If the total number of note-on events is not exceeded, the determination result is “NO”, and the process returns to step SG5 described above. However, if the total number of note-on events is exceeded, the determination result is “YES”, and this process ends.

  As described above, in the overlay detection process, the progress of adjacent note-on events is based on the content (elapsed time T) of the register TIME [a] detected in the above-described note-on detection process (see FIG. 11). It is determined whether or not the chords are substantially coincident with time T. If it is a non-chord, the contents of the address register AD [a] are stored in the two-dimensional address register AD [b] [0], and the contents of the register NOTE [a] are stored in the two-dimensional register NOTE [b] [0]. On the other hand, if it is a chord, the contents of the address register AD [a] are stored in the two-dimensional address register AD [b] [c], and the contents of the register NOTE [a] are stored in the two-dimensional register NOTE [b] [c]. To store again.

Therefore, for example, when the elapsed times T stored in the registers TIME [0] to TIME [2] are non-chords,
AD [0] [0] ← AD [0], NOTE [0] [0] ← NOTE [0]
AD [1] [0] ← AD [1], NOTE [1] [0] ← NOTE [1]
Store again as AD [2] [0] ← AD [2], NOTE [2] [0] ← NOTE [2].

On the other hand, for example, if the elapsed times T stored in the registers TIME [0] to TIME [2] are chords,
AD [0] [0] ← AD [0], NOTE [0] [0] ← NOTE [0]
AD [0] [1] ← AD [1], NOTE [0] [1] ← NOTE [1]
Store again as AD [0] [2] ← AD [2], NOTE [0] [2] ← NOTE [2].

<Operation of maximum / minimum detection processing>
Next, the operation of maximum / minimum detection processing will be described with reference to FIGS. When this process is executed through step SD2 (see FIG. 9) of the execution process described above, the CPU 11 proceeds to step SH1 shown in FIG. 13 and resets the pointer a, the pointer b, and the pointer c to zero. Subsequently, in steps SH2 to SH7, while advancing the pointer a, the difference between the two-dimensional register NOTE [a + 1] [0] specified by the pointer a and the two-dimensional register NOTE [a] [0], that is, adjacent to it. The difference between the note NOTEs of the matching note-on events is calculated. If the calculated difference is “+ (positive)”, “+ difference value” is calculated. If the calculated difference is “0”, “0” is calculated. When the calculated difference is “− (negative)”, the process of storing “−difference value” in the register DIF [a] is performed. The value a + 1 obtained by adding “1” to the pointer a is the total number of notes (music data). Repeat until the number exceeds. Here, “+ difference value” indicates that the slope of the pitch change is increasing, and “− difference value” indicates that the slope of the pitch change is decreasing.

  Thus, when the difference value indicating the slope of the pitch change for each note-on event in the song data has been stored in the register DIF [a], the determination result in step SH2 is “NO”, and the flow proceeds to step SH8. The pointer a is reset to zero. In steps SH9 to SH12, the pointer a is incremented until the value a + 1 obtained by adding “1” to the pointer a exceeds the total number of data, and the difference value of the register DIF [a] is read accordingly. If either the read difference value of the register DIF [a] or the difference value of the register DIF [a + 1] is “0”, the determination result of either step SH10 or SH11 is “YES”. Proceeding to SH12, the pointer a is incremented, and the process returns to step SH9 described above.

  On the other hand, if the difference values of the read register DIF [a] and register DIF [a + 1] are other than “0”, the determination results of steps SH10 and SH11 are “NO”, which is shown in FIG. The process proceeds to step SH13. In step SH13, it is determined whether or not the differential polarities of the register DIF [a] and the register DIF [a + 1] read continuously are not the same. If the difference polarities are the same, the determination result is “NO”, the process proceeds to step SH18, the pointer a is incremented, and the process returns to step SH9 (see FIG. 13).

  On the other hand, when the differential polarities of both are not the same, that is, when the differential polarity of the register DIF [a] is “+ (increase)” and the differential polarity of the register DIF [a + 1] is “− (decrease)” or When the difference polarity of the register DIF [a] is “− (decrease)” and the difference polarity of the register DIF [a + 1] is “+ (increase)”, the determination result in step SH13 is “NO”. The process proceeds to step SH14. In step SH14, it is determined whether or not the differential polarity of the register DIF [a] is “− (decrease)”.

  In a minimal change where the differential polarity of the register DIF [a] is “− (decrease)” and the differential polarity of the register DIF [a + 1] is “+ (increase)”, the determination result in step SH14 is “YES”. Proceed to step SH15. In step SH15, the value of the two-dimensional address register AD [a] [0] designated by the pointer a is stored in the register MINAD [b] [0] as a minimal value address designating a minimal sound. In step SH16, the register DIF [a] is stored in the register MINDIF [b] as a minimum difference value. Thereafter, the process proceeds to step SH17, and the pointer b is incremented. In step SH18, the pointer a is incremented, and the process returns to the above-described step SH9 (see FIG. 13).

  On the other hand, in the maximum change where the differential polarity of the register DIF [a] is “+ (increase)” and the differential polarity of the register DIF [a + 1] is “− (decrease)”, the determination result in step SH14 is “NO”. The process proceeds to step SH19. In step SH19, the value of the two-dimensional address register AD [a] [0] specified by the pointer a is stored in the register MAXAD [c] [0] as a maximum value address specifying the maximum sound. Next, in step SH20, the register DIF [a] is stored in the register MAXDIF [c] as a maximum difference value. Thereafter, the process proceeds to step SH21, and the pointer c is incremented. In the subsequent step SH18, the pointer a is incremented, and the process returns to the above-described step SH9 (see FIG. 13).

  In this way, in the maximum / minimum detection processing, a difference value representing the slope of the pitch change is calculated from the note NOTE between adjacent note-on events in the song data, and the note corresponding to the position where the difference is the minimum is calculated. The local minimum address where the on-event is stored and the corresponding local differential value, the local maximum address where the note-on event corresponding to the position where the local maximum is stored, and the local maximum difference value corresponding thereto And are to be detected.

<Operation of pitch detection processing>
Next, the operation of the pitch detection process will be described with reference to FIGS. When this process is executed through step SD3 (see FIG. 9) of the execution process described above, the CPU 11 detects the maximum side highlight sound in steps SJ1 to SJ11 shown in FIG. In steps SJ12 to SJ22, the minimal highlight sound is detected.

  In the present embodiment, the five sounds before the maximum sound designated by the maximum address (MAXAD [a]) continuously increase and the sound one previous to the maximum sound (MAXAD [a-1]). Is defined as the “maximum side highlight sound”, and the five sounds before the minimum sound designated by the minimum address (MINAD [a]) are continuously reduced and the sound before the minimum sound ( MINAD [a-1]) is defined as “minimum side highlight sound”. The following description will be divided into a maximum highlight sound detection operation consisting of steps SJ1 to SJ11 and a minimum highlight sound detection operation consisting of steps SJ12 to SJ22.

a. Maximum side highlight sound detection operation (operations of steps SJ1 to SJ11)
In step SJ1, pointers a and b are reset to zero. Next, in step SJ2, it is determined whether or not the incremented pointer a has exceeded the total number of data. If the pointer a does not exceed the total number of data, the determination result is “YES”, and the flow proceeds to step SJ3. On the other hand, when the pointer a exceeds the total number of data, the determination result is “NO”, and the operation shifts to the minimum side highlight sound detection operation described later.

  In step SJ3, the value of the register MAXDIF [a] detected in the above-described maximum / minimum detection processing, that is, the maximum difference value is set in the pointer b, and in the subsequent step SJ4, the initial value “1” is set in the sound number pointer m. set. In step SJ5, the polarity of the difference value stored in the register DIF [b−m] specified by the value b−m obtained by subtracting the sound number pointer m from the pointer b is “+ (increase)”. Determine whether. When the polarity of the difference value stored in the register DIF [b−m] becomes “− (decrease)”, the determination result becomes “NO”, the process proceeds to step SJ11, and the pointer a is incremented. The process returns to step SJ2.

  On the other hand, if the polarity of the difference value stored in the register DIF [b−m] is “+ (increase)”, the determination result in Step SJ5 is “YES”, and the process proceeds to Step SJ6. In step SJ6, it is determined whether or not the value of the sound number pointer m is “5”, that is, whether or not the differential polarity of the previous five sounds from the maximum sound (MAXAD [a]) has increased continuously. If the difference polarities of the previous five sounds are not continuously increased, the determination result is “NO”, and the process proceeds to step SJ7 to increment the sound number pointer m. Next, in step SJ8, it is determined whether or not a value b−m obtained by subtracting the sound number pointer m from the pointer b is “0”. If the value b−m is not “0”, the determination result is “NO”, and the process returns to step SJ5 described above. When the value b−m becomes “0”, the determination result becomes “YES”, the process proceeds to step SJ11, the pointer a is incremented, and the process returns to step SJ2.

  As described above, in steps SJ5 to SJ8, the maximum sound (MAXAD [a]) in which the differential polarity of the previous five sounds is continuously increased is searched. When the corresponding maximum sound (MAXAD [a]) is searched, the determination result in step SJ6 is “YES”, the process proceeds to step SJ9, and the maximum stored in the register MAXAD [a−1] [0]. The address that designates the previous sound is stored in the register VELAD [c] as the address that designates the maximum highlight sound. Hereinafter, the value of the register VELAD [c] is referred to as a highlight address VELAD [c]. Next, in steps SJ10 to SJ11, the pointer c and the pointer a are incremented, respectively, and then the process returns to step SJ2.

b. Minimal side highlight sound detection operation (operations of steps SJ12 to SJ22)
When the above-mentioned maximum side highlight sound detection operation has been processed, the CPU 11 proceeds to step SJ12 shown in FIG. 16, and resets the pointer a and the pointer b to zero. Next, in step SJ13, it is determined whether or not the incremented pointer a exceeds the total number of data. If the pointer a does not exceed the total number of data, the determination result is “YES”, and the flow proceeds to step SJ3. When the number exceeds the total number of data, the determination result is “NO”, and this processing is completed.

  In step SJ14, the minimum difference value (MINDIF [a]) detected in the above-described maximum / minimum detection processing is set in the pointer b, and in the subsequent step SJ15, an initial value “1” is set in the sound number pointer m. In steps SJ16 to SJ19, a search is made for a minimal sound (MINAD [a]) in which the differential polarities of the previous five sounds are continuously reduced. When the corresponding minimum sound (MINAD [a]) is searched, the determination result in step SJ17 becomes “YES”, and the process proceeds to step SJ20, where the minimum value stored in the register MINAD [a−1] [0] is obtained. An address that designates the sound immediately before the sound is stored in the register VELAD [c] as an address that designates the minimal highlight sound. Next, in steps SJ21 to SJ22, the pointer c and the pointer a are incremented, respectively, and then the process returns to step SJ13 described above.

  In this way, in the pitch detection process, the sound immediately before the maximum sound in which the previous five sounds continuously increased among the maximum sounds specified by the maximum value address detected in the maximum / minimum detection process. Of the minimum sounds specified by the highlight address VELAD [c] specified as the “maximum side highlight sound” and the minimum address detected by the maximum / minimum detection processing, the previous five sounds decreased continuously. A highlight address VELAD [c] for designating the sound immediately before the minimum sound as the “minimum side highlight sound” is generated.

<Velocity conversion processing>
Next, the operation of the velocity conversion process will be described with reference to FIG. When this process is executed through step SD4 (see FIG. 9) of the execution process described above, the CPU 11 resets the pointer a and the pointer b to zero in steps SK1 to SK2 shown in FIG. Next, in steps SK3 to SK4, the pointer b is incremented to search for a two-dimensional address register AD [b] [0] that matches the highlight address VELAD [a]. That is, the two-dimensional address register AD [b] [0] holding the highlight sound read address is searched for. When the corresponding two-dimensional address register AD [b] [0] is found, the determination result in step SK3 is “YES”, and the process proceeds to step SK5, which is designated by the two-dimensional address register AD [b] [0]. The velocity VEL in the music data to be played is increased to emphasize the highlight sound.

  In step SK6, an initial value “1” is set to the pointer c. Subsequently, in step SK7, whether or not the two-dimensional address register AD [b] [c] exists, that is, whether or not the highlight sound specified by the two-dimensional address register AD [b] [0] is a chord. Judging. If the highlight sound is not a chord, the determination result is “NO”, the process proceeds to step SK8, and the pointer a is incremented. Next, in step SK9, it is determined whether or not the incremented pointer a has exceeded the total number of data, that is, whether or not the volume has been changed for all highlight sounds. If the volume has not been changed, the determination result is “NO”, and the process returns to step SK2.

  On the other hand, if the highlight sound is a chord, the determination result in step SK7 is “YES”, and the flow proceeds to step SK10. In step SK10, the velocity VEL in the music data designated by the read address of the two-dimensional address register AD [b] [c] designated by the pointers b and c is decreased. In step SK11, the pointer c is incremented, and the process returns to step SK7. Thereby, when the highlight sound is a chord, the chord constituent sound other than the highlight sound is searched by moving the pointer c in the two-dimensional address register AD [b] [c], and the corresponding sound corresponds. If a chord constituent sound is present, the velocity VEL of the chord constituent sound is decreased, and the highlight sound in the chord is emphasized.

  Thus, when the volume of chord constituent sounds other than the highlight sound has been reduced, the determination result in step SK7 is “NO”, and the above-described steps SK8 to SK9 are executed. When the incremented pointer a exceeds the total number of data and the volume change is completed for all highlight sounds, the determination result in step SK9 is “YES”, and this process is completed.

  In this way, in the velocity conversion process, the velocity VEL in the music data specified by the highlight sound read address (highlight address VELAD [a]) is increased to emphasize the highlight sound, while the highlight sound is If a chord is formed, the velocity VEL of other chord constituent sounds other than the highlight sound is reduced, and the highlight sound in the chord is emphasized.

  As described above, in the first embodiment, a maximum sound whose maximum pitch changes and a minimum sound whose minimum change varies from music data representing each sound constituting the music, and the detected maximum sound and minimum sound are detected. Among the sounds, the impression of the song is the sound immediately before the maximum sound that has been changed maximally by multiple increases, and the sound that is immediately before the minimum sound that has been continuously decreased by multiple sounds. And the velocity VEL (volume) in the music data corresponding to the highlight sound is increased so that the specified highlight sound is emphasized. As a result, the part that characterizes the impression of the song is emphasized, so that it is possible to improve the performance expression.

C. Second Embodiment Next, a second embodiment will be described with reference to FIGS. Since the configuration of the second embodiment is common to the first embodiment, the description thereof is omitted. The second embodiment is different from the first embodiment in that the velocity conversion process (see FIG. 17) is executed during the reproduction process (step SA4 of the main routine).

  That is, in the first embodiment, the “chord detection process”, the “maximum / minimum detection process”, the “pitch detection process”, and the “velocity detection process” are executed by the execution process executed through the step SB8 of the editing process illustrated in FIG. The song data is edited so that the highlight sound is emphasized by performing “conversion processing”. On the other hand, in the second embodiment, the chord detection process is performed via step SL1 as shown in FIG. 18 by the execution process executed via step SB8 of the editing process shown in FIG. The maximum / minimum detection processing is sequentially performed through the step S3, and the pitch detection processing is sequentially performed through the step SL3 to obtain the highlight sound in the music data. Then, when the music data is reproduced by the reproduction process executed through step SA4 (see FIG. 3) of the main routine, the velocity VEL of the music data corresponding to the highlight sound obtained by the editing process is increased. The velocity conversion process is executed to emphasize the reproduction of the highlight sound. The operation of the reproduction process according to the second embodiment will be described below with reference to FIGS.

<Operation of playback processing>
When the reproduction process is executed through step SA4 (see FIG. 3) of the main routine, the CPU 11 proceeds to step SM1 shown in FIG. 19 to create a song list screen LG and display it on the display unit 16. The song list screen LG is a screen that displays a list of song numbers, song names, and the like of a plurality of songs [0] to [N] stored in the data area of the RAM 13, as in the example illustrated in FIG. Next, in step SM2, a song selection process is performed in which a song to be reproduced is selected from the songs displayed in a list on the song list screen LG, and the song number n of the selected song is set to the pointer n.

  When the music selection process is finished, the process proceeds to step SM3, where a start screen is displayed on the display unit 16. The start screen is a screen including a start icon and a return icon (not shown). If the return icon is selected and operated while the start screen is displayed on the screen, the determination result in step SM5 is “YES”, this processing is completed, the processing is returned to the main routine, and the initial screen display state is restored.

  On the other hand, if the start icon is selected and operated while the start screen is displayed, the determination result in step SM4 is “YES”, and the process proceeds to step SM6 to store the start address of the song data of song number n in the register AD. To do. Next, in step SM7, it is determined whether or not the read address stored in the register AD exceeds the end address. If the end address is exceeded, the determination result is “YES”, and this process is completed. If the end address is not exceeded, the determination result is “NO”, and the process proceeds to step SM8. In step SM8, the delta time ΔT is read from the music piece data [AD] specified by the read address stored in the register AD, and in the subsequent step SM9, the read delta time ΔT is stored in the register t.

  Next, in step SM10, the process waits until a predetermined time elapses. The fixed time refers to a time corresponding to one cycle of the timer clock (minimum resolution time) generated by a timer interrupt process (not shown). Then, when a certain time has elapsed, the determination result in step SM10 becomes “YES”, the process proceeds to step SM11, and the value of the register t is decremented. Next, in step SM12, it is determined whether or not the value of the decremented register t is “0” or less, that is, whether or not the reproduction timing has been reached. If the reproduction timing has not been reached, the determination result is “NO”, and the process returns to step SM10. Thereafter, steps SM10 to SM12 are repeated until the reproduction timing is reached.

  When the reproduction timing is reached, the determination result in step SM12 is “YES”, the process proceeds to step SM13 shown in FIG. 20, and the music data [AD] specified by the read address stored in the register AD is selected. Read event EV, note NOTE, and velocity VEL. Subsequently, in step SM14, it is determined whether or not the read event EV is a note-on event. If the event EV is other than a note-on event, the determination result is “NO”, and the process proceeds to step SM15. For example, if the event EV is a note-off event, note-off processing for instructing to mute the musical sound corresponding to the note NOTE The process corresponding to the event EV is executed and the process proceeds to Step SM22 described later.

  On the other hand, if the read event EV is a note-on event, the determination result in step SM14 is “YES”, the process proceeds to step SM16, and the pointer a is reset to zero. Next, in steps SM17 to SM19, the highlight address VELAD [a] that matches the current read address stored in the register AD is searched while incrementing the pointer a until the total number of data is exceeded.

  That is, it is determined whether or not the currently read music data [AD] is a highlight sound. If the currently read song data [AD] is a highlight sound, the determination result in step SM17 is “YES”, and the process proceeds to step SM20 to emphasize the highlight sound. Increase. Subsequently, in step SM21, the sound source 14 is instructed to sound a musical tone having a pitch specified by the currently read note NOTE with the increased velocity VEL. Thereafter, the process proceeds to step SM22, the read address stored in the register AD is incremented, and the process returns to step SM7 shown in FIG.

  On the other hand, if the currently read song data [AD] is not a highlight sound, the determination result in step SM19 is “YES”, and the process proceeds to step SM23 shown in FIG. In steps SM23 to SM24, the pointer a and the pointer b are each reset to zero. Subsequently, in steps SM25 to SM26, the pointer b is incremented to search for a two-dimensional address register AD [b] [0] that matches the highlight address VELAD [a]. That is, the two-dimensional address register AD [b] [0] holding the highlight sound read address is searched for. When the corresponding two-dimensional address register AD [b] [0] is found, the determination result in step SM25 is “YES”, the process proceeds to step SM27, and the initial value “1” is set to the pointer c.

  Next, in step SM28, whether or not the two-dimensional address register AD [b] [c] exists, that is, whether or not the highlight sound specified by the two-dimensional address register AD [b] [0] is a chord. Judging. If the highlight sound is not a chord, the determination result is “NO”, the process proceeds to step SM29, and the pointer a is incremented. Next, in step SM30, it is determined whether or not the incremented pointer a has exceeded the total number of data, that is, whether or not all highlight sounds are chords.

  Here, it is assumed that all the highlight sounds are checked for chords. If it does so, the judgment result of step SM30 will be "YES", and will return a process to step SM21 (refer FIG. 20) mentioned above. Therefore, the currently read song data [AD] does not correspond to the highlight sound, and it is checked whether or not all the highlight sounds are chords. If it is determined that it is not included in the constituent sound of the chord having the highlight sound, the sound source 14 is instructed to generate sound based on the note NOTE and the velocity VEL in the song data [AD].

  On the other hand, if it has not been checked whether or not all the highlight sounds are chords, the determination result in step SM30 is “NO”, and the above-described steps SM24 and subsequent steps are executed. If the highlight sound is a chord, the determination result in step SM28 described above is “YES”, the process proceeds to step SM31, and the two-dimensional address register AD [b] [c] designated by the pointer b and the pointer c. Determines whether it matches the current read address stored in the register AD. If they do not match, the determination result is “NO”, the process proceeds to step SM32, the pointer c is incremented, and the process returns to step SM28.

  That is, in steps SM28, SM31, and SM32, it is determined whether or not the currently read song data [AD] is included in a chord component having a highlight sound. If the currently read song data [AD] is included in a chord component having a highlight sound, the determination result in step SM31 is “YES”, and the flow advances to step SM33. In step SM33, the velocity VEL in the currently read music data [AD] is decreased, and then the process returns to step SM21 (see FIG. 20).

  As described above, in the second embodiment, the editing process is executed to detect and detect the maximum sound whose pitch changes maximum and the minimum sound whose minimum change from the music data representing each sound constituting the music. Among the maximum and minimum sounds, the sound immediately before the maximum sound that has been changed maximally by multiple notes and the sound immediately before the minimum sound that has been changed continuously by multiple sounds If the song data to be played is a highlight sound when playing the song data with the playback process, the velocity in the song data corresponding to the highlight sound is determined. Since the VEL (volume) is increased to emphasize the part that characterizes the impression of the song, the performance expression can be improved. Also in the second embodiment, when the music data to be reproduced is a highlight sound and the highlight sound constitutes a chord, the velocity VEL of other chord constituent sounds other than the highlight sound is also included. Can be emphasized, and highlights in chords can be emphasized to highlight points that characterize the impression of the song.

  In the first and second embodiments described above, the sound immediately before the maximum sound that has been continuously increased by a plurality of sounds and one minimum sound that has been continuously decreased by a plurality of sounds continuously decreased. Each previous sound is defined as a highlight sound, but one sound before a maximum sound that increases continuously for a certain period or one sound before a minimum sound that decreases continuously for a certain period of time It can also be defined as a highlight sound. In the present invention, the highlight sound is determined from the pitch change of the music data. However, the present invention is not limited to this, and the highlight sound can be determined according to the tonality of the music.

  Furthermore, in the first and second embodiments described above, the highlight sound volume is increased to emphasize the portion characterizing the impression of the song, but instead of this, song data including a known exclusive message, for example. If the filter characteristic data for high frequency emphasis is set as the exclusive message of the music data corresponding to the highlight sound, the tone generator 14 side generates the musical tone so that the frequency characteristic of the highlight sound is emphasized in the high frequency according to the filter characteristic data. By doing so, it is possible to emphasize the part that characterizes the impression of the song without increasing the volume, and in this way, it is possible to improve the performance expression.

It is a block diagram which shows the structure of 1st Embodiment by this invention. It is a figure which shows the structure of the music data stored in the data area of RAM13. It is a flowchart which shows operation | movement of a main routine. It is a figure which shows an example of the initial screen SG. It is a flowchart which shows operation | movement of an edit process. It is a figure which shows each example of the edit initial screen HSG, the execution screen JG, and the completion | finish screen EG. It is a flowchart which shows the operation | movement of a music selection process. It is a figure which shows an example of the music list screen LG. It is a flowchart which shows the operation | movement of an execution process. It is a flowchart which shows the operation | movement of a chord detection process. It is a flowchart which shows operation | movement of a note-on detection process. It is a flowchart which shows the operation | movement of an overlay detection process. It is a flowchart which shows the operation | movement of a maximum / minimum detection process. It is a flowchart which shows the operation | movement of a maximum / minimum detection process. It is a flowchart which shows the operation | movement of a pitch detection process. It is a flowchart which shows the operation | movement of a pitch detection process. It is a flowchart which shows the operation | movement of a velocity conversion process. It is a flowchart which shows the operation | movement of the execution process by 2nd Embodiment. It is a flowchart which shows the operation | movement of the reproduction | regeneration processing by 2nd Embodiment. It is a flowchart which shows the operation | movement of the reproduction | regeneration processing by 2nd Embodiment. It is a flowchart which shows the operation | movement of the reproduction | regeneration processing by 2nd Embodiment.

Explanation of symbols

10 Operation unit 11 CPU
12 ROM
13 RAM
14 sound source 15 sound system 16 display unit 17 MIDI interface

Claims (8)

Song data storage means for storing song data representing each sound constituting the song;
Highlight sound extraction means for extracting a highlight sound characterizing the impression of the song from the song data stored in the song data storage means;
Song data changing means for emphasizing and changing musical tone elements of song data corresponding to the highlight sound extracted by the highlight sound extraction means among the song data stored in the song data storage means. Song data editing device. Song data storage means for storing song data representing each sound constituting the song;
Highlight sound extraction means for extracting a highlight sound characterizing the impression of the song from the song data stored in the song data storage means;
Playback means for playing back the song data stored in the song data storage means;
A music data editing apparatus comprising: music data changing means for emphasizing and changing musical tone elements of music data when the music data reproduced by the reproducing means corresponds to a highlight sound. The highlight sound extracting means is a maximum sound that is at a position where the change in the pitch included in the music data stored in the music data storage means is a maximum, and a pitch that is at a minimum. Detects the minimum sound, and the detected maximum sound and the sound from the minimum sound, the sound immediately before the maximum sound that increased continuously toward the maximum from the predetermined sound, and the predetermined sound continuously decreased toward the minimum 3. The music data editing apparatus according to claim 1, wherein the sound immediately before the minimum sound is extracted as a highlight sound that characterizes the impression of the music. The highlight sound extraction means is the one before the sound at the maximum position when the change in the pitch increases from the song data stored in the song data storage means toward the maximum continuously for a predetermined period. Extracting the sound and the previous sound of the sound at the minimum position as the highlight sound that characterizes the impression of the song when the change in pitch decreases toward the minimum continuously for a predetermined period The music data editing apparatus according to claim 1. 3. The music data editing apparatus according to claim 1, wherein the music data changing means emphasizes the music data corresponding to the highlight sound by increasing the volume. If the highlight sound constitutes a chord, the song data changing means decreases the volume of the song data corresponding to each other chord constituent sound other than the highlight sound to increase the highlight sound in the chord. The music data editing apparatus according to claim 1, wherein the music data editing apparatus according to claim 1 is emphasized. A song data storage means for storing each song constituting the song and storing song data including an exclusive message;
Highlight sound extraction means for extracting a highlight sound characterizing the impression of the song from the song data stored in the song data storage means;
A filter characteristic for high-frequency emphasizing the frequency characteristic at the time of reproduction of music data as an exclusive message of music data corresponding to the highlight sound extracted by the highlight sound extraction means among the music data stored in the music data storage means A song data editing apparatus comprising: song data changing means for setting data. Highlight sound extraction processing for extracting highlight sounds that characterize the impression of the song from song data representing each sound constituting the song;
A song data change process for changing the music data of the song data corresponding to the highlight sound extracted by the highlight sound extraction process among the song data representing each sound constituting the song by a computer. A song data editing program characterized by being executed.

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