JP2002311952A - Device, method, and program for editing music data - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a music data editing device which can automatically impart musical expressions to music data. SOLUTION: This music data editing device has a music data input means which inputs the music data, a chord detecting means which detects chord data composed of pieces of note data sounded almost at the same time among pieces of music data, a sounding order determining means which determines the sounding order of the pieces of note data, and a sounding timing editing means which edits the sounding timing of the pieces of note data according to the determined sounding order.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a music data editing apparatus, and more particularly, to a music data editing apparatus capable of giving a musical expression to music data.

[0002]

2. Description of the Related Art In an automatic performance device or the like, M of only note information is used.
Performing music data such as IDI data results in a mechanical and expressionless performance. In order to make this a more natural performance, it is necessary to add various musical expressions and musical instruments to the music data as control data.

As one of such musical expressions, there is a stroke playing technique which is a playing technique of a plucked string instrument such as a guitar. In the guitar stroke playing method, even if it is described as a simultaneous chord on the score,
Since a plurality of strings are not completely played at the same time but in an order having a certain time difference, variations occur in the sound volume, the sound generation start time, and the sound generation time of each sound (each string).

Furthermore, there is a great difference in the variation between the down-picking and the up-picking of the stroke playing technique. Therefore, playing techniques mainly based on down picking,
In the upstroke-based playing method or the alternate stroke playing method in which these are alternately repeated, musical expressions are different.

[0005]

In the work of adding a musical expression to music data, the user needs to know what part of the music and what expression to add. Also,
In order to provide a musical expression, it is necessary to set a plurality of parameters for an event representing each note. For example, when playing a guitar, each of six chords is edited. I needed to.

It is an object of the present invention to provide a music data editing apparatus capable of automatically giving a musical expression to music data.

[0007]

According to one aspect of the present invention, a music data editing apparatus includes a music data input means for inputting music data, and a plurality of musical notes generated from the music data at substantially the same time. Chord detecting means for detecting chord data composed of data, sounding order determining means for determining a sounding order of the plurality of note data, and editing a sounding timing of the plurality of note data based on the determined sounding order. Sounding timing editing means.

[0008]

FIG. 1 is a block diagram showing a hardware configuration of a music data editing apparatus 1 according to an embodiment of the present invention.

The music data editing apparatus 1 includes a bus 2 and a RAM.
3, ROM 4, CPU 5, timer 6, external storage device 7,
It comprises a detection circuit 8, a panel operator 9, a display circuit 10, a display 11, a tone generator circuit 12, an effect circuit 13, a sound system 14, a performance operator 15, a MIDI interface 16, and a communication interface 17.

The bus 2 has a RAM 3, a ROM 4, a CPU,
5, external storage device 7, detection circuit 8, display circuit 10, sound source circuit 12, effect circuit 13, MIDI interface 1
6. The communication interface 17 is connected.

The user can make various settings using a plurality of panel controls 9 connected to the detection circuit 8. The panel operator 9 includes, for example, a rotary encoder, a switch, a pad, a fader, a slider, a mouse,
Any keyboard, such as a character input keyboard, a performance keyboard, a joystick, and a jog shuttle, may be used as long as it can output a signal according to a user input.

In the present embodiment, the panel operator 9 is
It is used for the user to input various settings, selections, and instructions such as start and stop of automatic performance in various processes described later.

The panel operator 9 may be a software switch or the like displayed on the display 11 operated by using another operator such as a mouse.

The display circuit 10 is connected to a display 11 and can display various information on the display 11. The user makes various settings with reference to the information displayed on the display 11. Display 1
1 may be configured by connecting an external display device.

A touch panel can be used as the display 11. In this case, the display 11
When the user presses a switch or the like displayed above, a user's instruction is input.

The external storage device 7 includes an interface for the external storage device, and is connected to the bus 2 via the interface. The external storage device 7 includes, for example, a floppy disk drive (FDD), a hard disk drive (HDD), a magneto-optical disk (MO) drive, and a CD-ROM.
ROM (Compact Disc-Read Only Memory)
Drive, DVD (Digital Versail)
e Disc) drive, semiconductor memory and the like.

The external storage device 7 can store various parameters, various data, programs for implementing the present embodiment, and the like. In the present embodiment, the external storage device 7 stores a plurality of accompaniment style data for automatic accompaniment as preset data or user data.

The RAM 3 has a working area of the CPU 5 for storing flags, registers or buffers, various parameters, and the like. The ROM 4 can store various parameters and control programs, programs for realizing the present embodiment, and the like. In this case, it is not necessary to store the programs and the like in the external storage device 7 in an overlapping manner. CP
U5 performs calculation or control according to a control program or the like stored in the ROM 4 or the external storage device 7.

The timer 6 is connected to the CPU 5,
Basic clock signal, interrupt processing timing, etc.
5

When a hard disk drive (HDD) is connected as the external storage device 7, a control program or a program for realizing the present embodiment includes:
It can also be stored in a hard disk (HDD) in the external storage device 7. By reading the control program and the like from the hard disk to the RAM 3, the same operation as when the control program and the like are stored in the ROM 4 is performed by the CPU
5 can be made. By doing so, it is possible to easily add a control program and the like, upgrade the version, and the like.

In addition to the hard disk drive,
When a CD-ROM drive is connected, a control program, a program for implementing the present embodiment, and the like can be stored in the CD-ROM. CD-RO
A control program, a program for implementing the present embodiment, and the like can be copied from M to the hard disk.
New installation and version upgrade of the control program and the like can be easily performed.

The tone generator circuit 12 receives the sequence data recorded in the external storage device 7 or the MID supplied from the MIDI device 18 connected to the MIDI interface.
A tone signal is generated according to the I signal, the performance signal, and the like, and supplied to the sound system 14 via the effect circuit 13.

The effect circuit 13 gives various effects to the digital tone signal supplied from the tone generator circuit 12.

The sound system 14 includes a D / A converter and a speaker, and converts a supplied digital tone signal into an analog format and generates a sound.

The tone generator 12 has a waveform memory system,
FM system, physical model system, harmonic synthesis system, formant synthesis system, VCO (Voltage Control)
lled Oscillator) + VCF (Volt
age Controlled Filter) + VC
A (Voltage Controlled Ampl)
(i.e., analog synthesizer).

The tone generator circuit 12 is not limited to a configuration using dedicated hardware, but may be a DSP (Digit).
al Signal Processor) + a microprogram, a CPU + software program, or a sound card.

Further, a plurality of tone generation channels may be formed by using one tone generator circuit in a time-division manner. Alternatively, a plurality of tone generator circuits may be used, and one tone generator circuit may be used for each tone channel. A pronunciation channel may be configured.

The performance operator 15 is connected to the detection circuit 8 and supplies a performance signal according to the performance operation of the user. In the present embodiment, a performance keyboard and pads are used as the performance operators 15. The performance operator 15 is not limited to these, and may be any device as long as the user can input performance information. For example, a keyboard for character input, a mouse, a joystick, or the like
Can also be used.

The MIDI interface (MIDI I
/ F) 16 can be connected to electronic musical instruments, other musical instruments, audio equipment, computers, etc.
It can transmit and receive DI signals. The MIDI interface 16 is not limited to a dedicated MIDI interface, but may be RS-232C, USB (Universal Serial Bus), IEEE 1394 (I Triple E 13).
94) or the like. In this case, data other than the MIDI message may be transmitted and received at the same time.

The MIDI device 18 is an audio device, a musical instrument or the like connected to the MIDI interface 16. M
The form of the IDI device 18 is not limited to a keyboard instrument, but may be a string instrument type, a wind instrument type, a percussion instrument type, or the like. Further, the sound source device, the automatic performance device and the like are not limited to those built in one electronic musical instrument main body, but each is a separate device,
Each device may be connected using communication means such as MIDI or various networks. The user can use this MI
Performance information can also be input by playing (operating) the DI device 18.

The MIDI device 18 can also be used as an operator for inputting various data and various settings other than performance information.

The communication interface 17 is connectable to a communication network 19 such as a LAN (local area network), the Internet, or a telephone line. The communication interface 17 is connected to a server computer 20 via the communication network 19, and is connected to an external storage device such as an HDD. 7, a control program, a program for implementing the present embodiment, music data, and the like can be downloaded from the server computer 20 into the RAM 4 or the like.

The communication interface 17 and the communication network 19 are not limited to wired ones, but may be wireless. Also, both may be provided.

FIG. 2 is a conceptual diagram showing the format of the music data MD according to the present embodiment. The music data MD is
For example, SMF (Standard MIDI Fil)
e) Automatic music data conforming to the format.

The music data MD includes initial setting information HC recorded at the head, timing data indicating a sounding timing, and event data indicating an event for each timing. Also, the music data MD can be composed of a plurality of parts.

The initial setting information refers to each part (track)
Data for setting various playback modes during playback of
For example, it includes timbre setting data, volume setting data, tempo setting data, and the like.

The timing data is data representing the time to process various events represented by the event data. The processing time of the event may be represented by an absolute time from the start of the performance, or may be represented by a relative time which is an elapsed time from a previous event.

The event data is data representing the contents of various events for reproducing music. The events include a note event (note data) directly representing a note that is directly related to the generation of a song that is a combination of a note-on event and a note-off event, and a pitch change event (pitch bend event), a tempo change event, a tone change event, and the like. A setting event for setting the reproduction mode of the music is included.

In each note event, a pitch, a tone length (gate time) GT, and a volume (velocity) VL are recorded. The pronunciation length GT indicates the length of a quarter note by “480”. For example, the length of an eighth note is “240”, and
The division note length is “960”. The volume VL has a settable minimum volume of “0” and a maximum volume of “128”.

FIG. 2A shows an example of music data MD1 before editing used in this embodiment. A chord event CA composed of six note events that are generated simultaneously at timing A
, And a chord event CB composed of six note events that are generated simultaneously at the timing B is also recorded.

In the music data MD1, all note events in the chord event are simultaneously generated, and the volume is constant. Reproduction of such data results in a mechanical performance without musical expression.

The musical composition data MD1 shown in FIG. 2B is obtained by adding an expression of the stroke performance of the guitar to the musical composition data MD1 according to the present embodiment.
D2.

In the music data MD2, the chord event CA is determined to be down picking in which the sound generation timing is gradually shifted from the low sound source toward the high string, and the chord event CB is changed from the high sound source to the low string by a stroke type determination process described later. Up-picking, which gradually shifts the sounding timing toward it, is determined.

Furthermore, the sounding timing, sounding length GT, and volume VL of the note events in the chord event CA and the chord event CB are edited by a stroke expression imparting process described later.

As shown in FIG.
The stroke performance of the guitar is simulated by giving variations in T and volume VL.

In this embodiment, not only a plurality of note events that are sounded completely simultaneously, but also a plurality of note events whose sounding timings are almost the same period are set as chord events. A plurality of note events that are pronounced at about the same time are a set of a plurality of note events that are played within a time that is considered musically a chord when played.

FIG. 3 is a flowchart showing the main processing according to the present embodiment performed by the CPU 5 of FIG.

At step SA1, the main processing is started, various flags and buffers are initialized, and the routine proceeds to the next step SA2.

In step SA2, the display device 11 shown in FIG.
A list of the music data MD recorded in the external storage device 7 or the like is displayed, and the user selects music data to be edited. The user uses the panel operator 9 or the like to select music data to be edited (expressed) from the music data displayed in the list. Note that the selection of the music data is not limited to this method, and the user may directly specify the path of the storage destination of the music data. When the music data is selected, the process proceeds to the next Step SA3.

In this embodiment, the music data is edited when the music data is not being reproduced. However, it can be edited in real time while the music data is being reproduced. In this case, the reproduction of the music data selected in step SA2 is started.

At step SA3, a list of parts included in the selected music data is displayed on the display device 11, and the user selects a part (processing part) to be edited.
The user selects a processing part from the parts displayed in the list with the panel operator 9 or the like. When the processing part is selected, the process proceeds to the next Step SA4.

At step SA4, the selected music data is read from the external storage device 7 or the like into the read buffer in the RAM 3, and the reproduction tempo and time signature of the music are detected. Thereafter, the flow advances to the next Step SA5.

At step SA 5, the event of the processing part of the selected music data is read into the work area in the RAM 3 in accordance with the clock signal supplied from the timer 6. Thereafter, the flow advances to the next Step SA6.

In step SA6, it is detected whether or not the timing of the event read out in step SA5 is the end timing (last event) of the music data. If it is the end timing, the process proceeds to Step SA7 indicated by a YES arrow. If it is not the end timing, the process proceeds to Step SA9 indicated by a NO arrow.

At step SA7, other processing is performed.
In the other processing, the music data in the reproduction buffer in the RAM 3 is stored. In addition, reproduction and start of music data, other editing processing, recording of music data, downloading of music data, performance processing for performance operators, various settings, and the like can also be performed. Then, the next step S
The process proceeds to A8 and ends the main process.

At step SA9, it is determined whether or not the event at this time is a chord event. If the event at this timing is a chord event, the process proceeds to Step SA10 indicated by a YES arrow. If the event at this timing is not a chord event, the process proceeds to step SA12 indicated by a NO arrow.

In step SA10, a stroke type determination process described later is performed. Upon completion of the stroke type determination processing, the flow advances to the next Step SA11.

At step SA11, a stroke expression providing process described later is performed. When the stroke expression providing process is completed, the process proceeds to the next Step SA12.

In step SA12, the event of the current timing is recorded in a reproduction buffer or the like in the RAM 3. When the real-time processing is being performed, the sound generation processing of the event of the current timing is performed here. Thereafter, the flow advances to the next Step SA13.

At step SA13, an event at the next timing is read into the work area in the RAM 3. Thereafter, the flow returns to step SA6.

FIG. 4 is a flowchart showing the stroke type determination process performed in step SA10 of FIG.

In step SB1, the stroke type determination processing is started, and the flow advances to the next step SB2.

In step SB2, step SA in FIG.
The group time is determined by referring to the group time determination table in accordance with the playback tempo and time signature of the selected music data detected in step 4. Thereafter, the flow advances to the next Step SB3.

The group time is a time of a note value forming a pair of down picking and up picking, and in principle, down picking and up picking are alternately repeated within the group time.

It is preferable to prepare at least two types of group time determination tables as shown in FIGS. 5A and 5B. The group time determination table shown in FIG. 5A is a two-time system, that is, two-half time, four-fourths,
Used for music with a time signature that is a multiple of two such as a time signature. The group time determination table shown in FIG. 5B is used for a tune having a time signature of a multiple of 3, such as a triple time signature, that is, a triple time signature, a twelfth time signature, or the like.

In both group time determination tables,
A tempo converted to a quarter note and a group time corresponding to the tempo are recorded in note length. That is, in step SB2, the group time determination table to be used is determined according to the time signature of the selected music data, and the group time is determined by referring to the group time corresponding to the tempo of the selected music data in the table.

It is to be noted that a time signature of five-time system or seven-time system can be considered. In such a case, the group time determination tables of the two-time system and the three-time system are used in combination.
For example, in the case of 5 beats, it is considered that the combination is “2 beats + 3 beats” or “3 beats + 2 beats”,
By specifying the order, it is sufficient to use a combination of the group time determination tables of the two-time system and the three-time system.

In the case where the group time determination tables of the two-time system and the three-time system are used in combination, FIG.
As shown in FIG. 5C, it is easier to set the tempo converted into quarter notes at the same boundary, so that a simplified table as shown in FIG. 5C may be prepared.

In step SB3, it is determined whether or not the chord event of the current timing is located in the first half of the group time determined in step SB2. If the chord event is located in the first half of the group time, the process proceeds to step SB4 indicated by a YES arrow. When the chord event is not located in the first half of the group time, that is, when it is located in the second half, the process proceeds to Step SB6 indicated by a NO arrow.

In step SB4, it is determined whether or not the chord event of the current timing is the first chord event of the group time determined in step SB2. If it is the first chord event, step SB indicated by a YES arrow
Go to 5. If it is not the first chord event, the process proceeds to Step SB7 indicated by a NO arrow.

In step SB5, the difference between the timing of the immediately preceding (previous) chord event and the timing of the current chord event is detected, and it is determined whether or not the difference is at least half the group time. If the timing difference is equal to or more than half of the group time, the process proceeds to step SB8 indicated by a YES arrow, and the chord event at the current timing is determined to be down picking. If the timing difference is not more than half of the group time, the process proceeds to Step SB7 indicated by a NO arrow.

In step SB6, it is determined whether or not the chord event at the current timing located in the latter half of the group time is the first chord event in the group time determined in step SB2. If there is no chord event in the first half of the group time and this chord event is the first chord event of the group time, the process proceeds to step SB9 indicated by a YES arrow, and the chord event at the current timing is picked up. decide. If it is not the first chord event of the group time, the process proceeds to Step SB7 indicated by a NO arrow.

At step SB7, it is determined whether or not the chord event at the immediately preceding (previous) timing is down picking. If the previous chord event is down picking, the process proceeds to step SB9 indicated by a YES arrow, and the chord event at the current timing is determined to be up picking. If the previous chord event is not down picking, that is, if it is up picking, the process proceeds to step SB8 indicated by a NO arrow to determine the chord event of the current timing to be down picking.

At step SB8, the chord event at the current timing is determined to be down picking. afterwards,
Proceeding to step SB10, the stroke type determination processing ends.

At step SB9, the chord event at the current timing is determined to be up-picking. afterwards,
Proceeding to step SB10, the stroke type determination processing ends.

FIG. 6 is an example of a musical score whose stroke type has been determined by the stroke type determination processing of this embodiment. In the scores of FIGS. 6A and 6B, quarter note chords are continuous. When playing this on a guitar, each chord is played either down picking or up picking.

FIG. 6A shows an example in the case where the reproduction tempo is 110 in terms of quarter note length and the time is four quarters. In this case, the group time is determined to be a quarter note length based on the reproduction tempo with reference to the two-time group time determination table shown in FIG.

The fact that the group time is a quarter note length means that down picking and up picking are repeated within the quarter note length time t1. Therefore, FIG.
In the score shown in (A), the stroke type of all note events is determined to be down picking.

The score shown in FIG. 6B is obtained by converting the playback tempo of the score shown in FIG. 6A into quarter note length and setting it to 130. In the music score shown in FIG. 6B, the group time determination table to be referred to is the two-time group time determination table shown in FIG. 5A similarly to the music score shown in FIG. So the group time is 2
The length of the note is determined.

The fact that the group time is a half note length means that down picking and up picking are repeated within the half note length time t2. Therefore, FIG.
In the score shown in (B), the stroke type of each note event is determined to be down picking or up picking. That is, the performance is based on complete alternate picking in which down picking and up picking are alternately repeated.

Next, the stroke expression providing process in this embodiment will be described with reference to FIGS.

FIGS. 7 and 8 are diagrams showing the music data MD in piano roll display. The music data MD includes chord events CA, CB, and CC. Chord Event CA
Includes six note events NA1 to NA6, a chord event CB includes six note events NB1 to NB6, and a chord event CC includes six note events NC1 to NC6.
NC6.

FIG. 9 is a flowchart showing the stroke expression providing process performed in step SA11 of FIG.

At step SC1, a stroke expression providing process is started. Thereafter, the flow advances to the next Step SC2.

At step SC2, the number of note events included in the chord event of the current timing (the number of chord notes)
Is detected. Thereafter, the flow advances to the next Step SC3.

In step SC3, any one of the first to sixth strings of the guitar is assigned to each of the note events included in the chord event at the current timing. Thereafter, the flow advances to the next Step SC4.

By the processing in step SC3, FIG.
As shown in (A), note events NA1, NB1, NC
1 is assigned to the first string (highest note) of the guitar. Hereinafter, similarly, NA2, NB2, and NC2 are the second strings (second high notes), and NA3, NB3, and NC3 are the third strings (third high notes).
In addition, NA4, NB4, and NC4 are in the fourth string (third bass),
NA5, NB5 and NC5 are in the fifth string (second bass)
6, NB6 and NC6 are assigned to the sixth string (the lowest note).

In step SC4, the present chord is referred to based on the stroke expression assignment based on the number of chords obtained in step SC2 and the stroke type of the chord event at the current timing determined in the stroke type determination processing of FIG. Edit the sounding timing of each note event included in the event. Thereafter, the flow advances to the next Step SC5.

By the processing in step SC4, FIG.
In (A), the sounding time of the note event overlaps as shown by the dashed-dotted triangle. This is because, in the chord events CA and CC designated for down picking, the note-on event assigned to the lower string has an earlier sounding start time, while the chord event CB designated for up picking is assigned to the higher string. This is because the sound generation start time is earlier for the given chord event.

In step SC5, the present chord is referenced by referring to the stroke expression assignment based on the number of chords obtained in step SC2 and the stroke type of the chord event at the current timing determined in the stroke type determination process of FIG. Edit the volume (velocity) of each note event included in the event. Thereafter, the flow advances to the next Step SC6.

In step SC6, the editing of the tone generation timing performed in step SC5 detects whether or not there is a note event whose tone generation time overlaps with the note event assigned to the same string at the immediately preceding timing. If there is a note event with an overlapping sounding time, the process proceeds to step SC7 indicated by a YES arrow. If there is no note event with an overlapping sounding time, step SC8 indicated by a NO arrow
Proceed to.

The overlap of the sounding times detected here is the portion indicated by the one-dot chain line triangle in FIG. 7A described above.

In step SC7, the sound generation length of the note event assigned to the same string at the previous timing when the sound generation time overlaps is corrected so that the sound generation ends immediately before the note event at the current timing. That is,
Shorten the note length of the last note event. Thereafter, the flow advances to the next Step SC8.

By the processing in step SC7, the music data MD becomes as shown in FIG. 7B. In FIG. 7B, a portion indicated by a dashed-dotted circle is a portion whose pronunciation length has been corrected.

At step SC8, the tone generation end time of the note event assigned to the same string at the immediately preceding timing created by the editing of the tone generation timing performed at step SC5 and the note start time of the note event at the current timing are executed. To detect whether there is an inappropriate interval. If there is an inappropriate interval, the process proceeds to Step SC9 indicated by a YES arrow. N if no inappropriate spacing
Proceeding to step SC10 indicated by an arrow O, the stroke expression providing process ends.

In the process of step SC8, FIG.
(B) The part shown by the square of the one-dot chain line is detected.

In the present embodiment, the inappropriate interval is an interval created in the stroke expression providing process, and is an interval not intended by the creator of the music data.

In step SC9, the sound generation length of the note event assigned to the same string at the previous timing with an inappropriate interval is corrected so that the sound generation ends immediately before the note event at the current timing. That is, the note length of the note event at the previous timing is increased. After that, the process proceeds to the next Step SC10, and the stroke expression providing process ends.

By correcting the tone generation end time in step SC9, the music data MD becomes as shown in FIG. 8 (C). Step S in FIG.
This is the portion corrected in C9.

FIG. 10 is an example of a stroke expression assignment table referred to in step SC4 of FIG.

In the stroke expression imparting table, the number of notes of each chord (the number of note events in a chord event)
Each type has a stroke type of down picking or up picking, and parameters to be changed for each stroke type (T = sound generation timing, V = velocity)
Are recorded.

For example, when the number of chords is six and the stroke type is down picking, the value of the tone generation timing (T) of the highest tone (the note event corresponding to the first string of the guitar) is set to “5”. ”And“ 8 ”to the velocity value.

"0" is added to the sounding timing (T) of the second treble (note event corresponding to the second string of the guitar),
That is, “4” is added to the velocity value without changing.

[0104] "-6" is added to the tone generation timing (T) of the third treble (note event corresponding to the third string of the guitar), and "0" is added to the velocity value, that is, the velocity value is not changed. .

[0105] "-12" is added to the tone generation timing (T) of the third bass (note event corresponding to the fourth string of the guitar), and "0" is added to the velocity value, that is, the velocity value is not changed. .

"-17" is added to the sounding timing (T) of the second bass (note event corresponding to the fifth string of the guitar), and "-4" is added to the velocity value.

[0107] "-21" is added to the tone generation timing (T) of the lowest note (note event corresponding to the sixth string of the guitar), and "8" is added to the velocity value.

As described above, by changing the parameters of each note event in a chord event according to the stroke expression imparting table, the expression of the stroke playing style of the guitar can be imparted.

Note that the change value of the sound generation start time may be increased or decreased according to a tempo, a musical idea, a user's instruction, etc., instead of using the value of the stroke expression imparting table as it is.

That is, when it is desired to provide a fast stroke expression, the change value (absolute value) of the sound generation start time of the note event corresponding to all the strings is reduced, and conversely, a slow stroke expression is desired. Increases the change value of the sound generation start time of the note event corresponding to all strings.

As described above, according to the present embodiment, chord data can be automatically designated as either down picking or up picking in the stroke playing style of the guitar.

Further, according to the present embodiment, it is possible to appropriately vary the sounding timing, volume, and sounding time of the note data in the chord data designated as either down picking or up picking.

Further, according to the present embodiment, the expression of the stroke playing technique is automatically given to the mechanical and expressionless music data, so that a natural expressionful performance can be performed.

In the present embodiment, a chord event to which a facial expression is added is automatically detected, but the event may be selected by the user.

In this embodiment, the stroke type is
Although all have been automatically determined, the user may arbitrarily specify them.

Further, depending on the tune, down-picking or up-picking may be frequently used, so that the appearance frequency (specified frequency) of down-picking and up-picking may be set. In this case, an operator for specifying the appearance frequency may be provided.

Furthermore, in this embodiment, the group time is determined according to the tempo of the music, but the user can arbitrarily specify the group time.

Further, in the present embodiment, the sound generation start time (sound generation timing) and volume (velocity) of the note event are edited with reference to the stroke expression imparting table, but the amount of each change can be set and changed by the user. It may be.

In this case, the boundary value of the tempo in the group time determination table shown in FIG. 5 may be made variable to allow the user to change the parameter to, for example, a parameter “probability of occurrence of an alternate”.

Further, the stroke expression imparting table may be prepared and referred to only for down picking or for up picking. For example, when only the down-pick is prepared, the pitch can be used for up-picking by applying the pitch order in reverse, such as applying the highest note setting to the lowest note.

Further, when the stroke expression imparting table for down picking is applied to up picking, it may be applied after making a change such as increasing the numerical value by 50%.

The stroke expression imparting table may be prepared for only six chords, and may be applied to chords of other numbers. In this case, for example, when applied to a chord of two tones, the changed values of the parameters of the highest note and the lowest note may be used.

In the present embodiment, the change values of the sounding timing and the sounding amount are fixed, but by changing them to some extent at random, it is possible to give a non-uniform natural variation.

In the present embodiment, a stroke expression is given to a plurality of chord events having the same pitch. However, the present embodiment can be applied to a plurality of chord events having different pitches. In this case, the note ending time of the note event whose sounding time overlaps with the note event of the next timing in the chord event is set to be immediately before the sounding start time of the note event to be sounded first of the chord event of the next timing. To edit. By doing so, it is possible to simulate re-pressing of a finger when a constituent sound of a chord changes in an actual performance of a guitar or the like.

The format of the music data (performance data) is "event + relative time" which represents the time of occurrence of the performance event by the time from the immediately preceding event, and the time of occurrence of the performance event is expressed in the music or bar. "Event + absolute time" expressed in absolute time, "pitch (rest) + note length" expressing music data in note pitch and note length or rest and rest length, minimum performance resolution The memory area may be secured, and the performance event may be stored in a memory area corresponding to the time when the performance event occurs.

The method of processing the music data is to change the processing cycle according to the set tempo. The processing cycle is constant, and the value of the timing data in the music data is changed according to the set tempo. The method and processing cycle are constant,
Any method may be used, such as a method of changing the timing data counting method in the music data in one process according to the tempo.

Further, the method of storing music data for a plurality of channels may be a format in which data of a plurality of channels are mixedly stored, or a format in which data of each channel is separately stored for each track.

Further, time-series music data may be stored in a continuous area on the memory,
Data scattered and stored in discrete areas may be separately managed as continuous data. That is, it is only necessary to be able to manage the data as time-series continuous data, and it does not matter whether the data is continuously stored in the memory.

Note that the music data editing apparatus 1 of this embodiment may take any form such as an electronic musical instrument, a personal computer + application software, a karaoke apparatus, a game apparatus, a portable communication terminal such as a mobile phone, and an automatic performance piano. You may take it.

When the present invention is applied to a portable communication terminal, it is not limited to a case where a predetermined function is completed only by the terminal, but a part of the function is provided on the server side, and a predetermined system is formed as a whole including the terminal and the server. The function may be realized.

In the case of an electronic musical instrument, the form is not limited to a keyboard instrument, but may be a stringed instrument type, a percussion instrument type, or the like.

The sound source device, the automatic performance device, and the like are not limited to those built into one electronic musical instrument main body, but each device is a separate device, and each device is connected using communication means such as MIDI or various networks. May be used.

Note that the present embodiment may be implemented by a commercially available computer or the like in which a computer program or the like corresponding to the present embodiment is installed.

In this case, the computer program or the like corresponding to the present embodiment is provided to the user while being stored in a computer-readable storage medium such as a CD-ROM or a floppy (registered trademark) disk. May be.

When the computer or the like is connected to a communication network such as a LAN, the Internet, or a telephone line, a computer program or various data may be provided to the computer or the like via the communication network.

Although the present invention has been described in connection with the preferred embodiments,
The present invention is not limited to these. For example, it will be apparent to those skilled in the art that various modifications, improvements, combinations, and the like can be made.

[0137]

As described above, according to the present invention,
A music data editing device capable of giving a stroke expression to music data can be provided.

[Brief description of the drawings]

FIG. 1 is a music data editing apparatus 1 according to an embodiment of the present invention.
FIG. 2 is a block diagram illustrating a hardware configuration of the first embodiment.

FIG. 2 is a conceptual diagram showing a format of music data MD according to an embodiment of the present invention.

FIG. 3 is a flowchart showing a main process performed by a CPU 5 in FIG. 1 according to an embodiment of the present invention.

FIG. 4 is a flowchart illustrating a stroke type determination process performed in step SA10 of FIG. 3;

FIG. 5 is an example of a group time determination table according to an embodiment of the present invention.

FIG. 6 is an example of a musical score whose stroke type has been determined by the stroke type determination processing according to the embodiment of the present invention.

FIG. 7 is a diagram showing music data MD in a piano roll display.

FIG. 8 is a diagram showing music data MD in a piano roll display.

FIG. 9 is a flowchart illustrating a stroke expression providing process performed in step SA11 of FIG. 3;

FIG. 10 is an example of a stroke expression assignment table referred to in step SC4 of FIG. 9;

[Explanation of symbols]

1 ... music data editing device, 2 ... bus, 3 ... RAM, 4 ...
ROM, 5 CPU, 6 timer, 7 external storage device,
8 detection circuit, 9 panel operator, 10 display circuit, 1
1 display, 12 sound source circuit, 13 effect circuit,
14: sound system, 15: performance operator, 16: M
IDI I / F, 17 communication I / F, 18 MIDI equipment, 19 communication network, 20 server computer

Claims (7)

[Claims] 1. music data input means for inputting music data; chord detection means for detecting chord data composed of a plurality of note data pronounced at substantially the same time from the music data; A music data editing apparatus comprising: a sound order determining unit that determines a sound order of data; and a sound timing editing unit that edits sound timings of the plurality of note data based on the determined sound order. 2. The music data editing apparatus according to claim 1, wherein the order of sound generation is one of down picking that sounds in order from the lowest sound and up picking that sounds in order from the highest sound. 3. The music composition according to claim 1, further comprising tempo detection means for detecting a reproduction tempo of the music data, wherein the sound order determination means determines the sound order of the plurality of note data based on the tempo. Data editing device. 4. The music data according to claim 1, further comprising a time signature detecting means for detecting a time signature of the music data, wherein the sound order determining means determines a sound order of the plurality of note data based on the time signature. Editing device. 5. The music data editing apparatus according to claim 1, further comprising a tone characteristic editing unit that edits tone characteristics of the plurality of note data based on the order of sound generation. 6. A music data input step of inputting music data; a chord detection step of detecting chord data composed of a plurality of note data pronounced at substantially the same time from the music data; A music data editing method, comprising: a sound order determining step for determining a sound order of data; and a sound timing editing step for editing sound timing of the plurality of note data based on the determined sound order. 7. A music data input procedure for inputting music data, a chord detection procedure for detecting chord data composed of a plurality of note data pronounced at substantially the same time from the music data, and the plurality of music notes A program for causing a computer to execute a music data editing procedure having a pronunciation sequence determining procedure for determining a pronunciation sequence of data, and a pronunciation timing editing procedure for editing a pronunciation timing of the plurality of note data based on the determined pronunciation sequence. .