JPH0981131A - Quantizing method for sequence data and timing processing device for sequence data - Google Patents

Abstract

PROBLEM TO BE SOLVED: To control the pronounciating timing of sequence data so as to properly performing reproduction. SOLUTION: An electronic musical instrument 100 has a RAM storing musical piece data and displays event data and a cursor on the screen of a television 110. After a user moves the cursor on an arbitrary event data by operating switches SW6-SW9, by repeating designating operation twice for turning on a switch SW1 once, thereby, the quantizing range is specified. When the switch SW1 is turned on after designating the range, the electronic musical instrument 100 starts the quantizing processing. The quantizing processing is performed by changing a clock from the head of a measure of each event data for ever measure in the measure within the designated range based on the rhythm of the measure belonging to it.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for controlling the tone generation timing of musical tones generated by sequence data.

[0002]

2. Description of the Related Art In recent years,
M, which is a standard for transmitting music information between different devices
With the establishment of the IDI (Musical Instrument Digital Interface) standard, the field of automatic performance has made great progress. Sequencer device for automatic performance (hereinafter,
Many are also commercialized, and
The sequencer function that is the function is also installed in various devices.

The main functions of the sequencer are recording / editing / reproducing of music data (sequence data). By installing this sequencer function, for example, music data sent from an external device can be recorded, the recorded music data can be arbitrarily arranged, and the arranged music data can be reproduced.

By the editing function of the music data (sequence data), the pitch of the musical tone and its sounding timing are changed, and the musical tone to be pronounced is added, including the change of the setting contents of the tone generator parameters related to the musical tone pronunciation form such as tone colors and effects. And so on. The above-mentioned sound generation timing includes a sound generation start timing and a period in which sound generation continues from the start timing. When changing the pronunciation start timing, a function called Quantize that automatically corrects the timing deviation is also widely installed.

As described above, the user can freely edit the music data by using the editing function. However, when the following editing is performed, the music data may not be properly reproduced.

The first example is a case where, after changing the time signature of a bar, for example, the quantize function corrects the deviation of the sound generation start timing. Quantize
Basically, the designated range is equally divided, and the sound generation start timing of each note produced within the range is changed to the equally divided timing. Therefore, if you change the time signature of a measure within the specified range, it will affect the overall quantize. As a result, for example, a note that should originally be pronounced at the beginning of a measure is sounded at a measure before that measure, or at another place within the same measure. As described above, there is a problem in that the user may be quantized in an unintended manner.

In the following example, the timing of starting the sound generation of a note is
This is the case when it is outside the bar to which it belongs. As for the time management of sequence data, the delta time management method that manages the sounding start timing of each note at the interval from the previous note, and the sounding start timing of the notes sounded within a bar Relative time management methods that are managed according to are widely used. In the latter method,
Even if a note is erased, it does not affect other notes. Therefore, compared to the former method, there is an advantage that the sequence data can be edited easily.

When the sequence data created by the above relative time management method is edited by the sequencer function,
The user was able to arbitrarily change the timing at which the notes in the measure started to sound. However, since the automatic playing device that reproduces the sequence data basically manages the pronunciation of each note for each measure, if the pronunciation start timing of the note is changed to outside the measure to which it belongs, Occurrence of abnormal pronunciation such as not producing notes. In addition, the sequence data may not be displayed normally due to the change.

An object of the present invention is to manage the tone generation timing of sequence data so that the reproduction can be performed properly.

[0010]

The method for quantizing sequence data according to the present invention is premised on changing the tone generation start timing of sequence data existing within a specified range, and the specified range is a range that spans a plurality of measures. When designated, the quantize is performed by changing the sound generation start timing of the sequence data for each bar based on the time signature of the bar to which the bar belongs as a processing unit.

The sequence data timing processing apparatus according to the first aspect of the present invention is based on the premise that the tone generation start timing of the sequence data is controlled, and a designation means for designating a range in which the tone generation start timing of the sequence data is changed. When the range that spans a plurality of measures is specified by the specifying means, the control means that changes the sounding start timing of the sequence data for each measure based on the time signature of the measure to which the measure belongs, with the measure as a processing unit. And.

In the above invention, since the measure is used as a processing unit, even if the playing time of the measure is changed, the quantize is performed without affecting the other measures.

The sequence data timing processing apparatus according to the second aspect of the present invention is premised on controlling the tone generation start timing of the sequence data, and a designation means for designating the tone generation start timing of the sequence data, and a designation means. Determining means for determining whether or not the sounding start timing of the sequence data designated by is within the bar to which the sequence data belongs, and determining means for determining that the sounding start timing of the sequence data is not within the bar to which the sequence data belongs Control means for invalidating the designation by the designating means when the determination is made.

As a result, in changing the sounding start timing of the sequence data, the change outside the bar to which it belongs is prohibited, and the sequence data belonging to a certain bar surely starts to sound within that bar. Become.

[0015]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a diagram showing the external appearance of a system to which the first embodiment is applied. The first embodiment is realized as an electronic musical instrument 100. Electronic musical instrument 100
Is a keyboard 101 used to specify the musical sound to be pronounced,
A switch group 10 including the illustrated switches SW1 to SW9 and a plurality of other switches not particularly illustrated.
2 is provided. The electronic musical instrument 100 has a function of operating as a multi-tone sound source, a sequencer function, and the like.
It is a model compatible with M (General MIDI).

A television 110 is connected to the electronic musical instrument 100. The electronic musical instrument 100 displays musical note data (event data), currently set sound source parameters, and the like on the screen of the television 110. It should be noted that the user changes the content displayed on the television 110 to the switch group 10
It can be designated by operating two predetermined switches.

The electronic musical instrument 100 is provided with terminals for connecting to an external device such as a sequencer. For example, MIDI information is exchanged with an external device by MIDI data. For example, when MIDI data is sent from a connected sequencer, the electronic musical instrument 100 analyzes the MIDI data, generates musical tones and sets sound source parameters in accordance with the analysis result, and the contents of the MIDI data. Is displayed on the television 110.

FIG. 2 is a block diagram of the configuration of the electronic musical instrument 100. As shown in FIG. 2, this electronic musical instrument 100
Is a CPU 20 that controls the entire musical instrument (and system)
1 and a ROM that stores various programs and control data
202, a RAM 203 mainly used as a work area by the CPU 201, the keyboard 101 and the switch group 102 described above, an image data output unit 204 for outputting image data for displaying an image on the screen of the television 110,
The MI of the sound system 205 that produces a musical tone according to the pronunciation command sent from the CPU 201 and the external device.
MIDI interface 20 for exchanging DI data
6 is provided.

An outline of the operation of the above configuration will be described. The CPU 201 controls the operation of the entire musical instrument 100 based on the control program stored in the ROM 202, and thereby controls the operation of the entire system shown in FIG. 1.

When the user operates the keyboard 101, the CPU
The 201 identifies the operated key, obtains the speed (velocity) when the key is operated, generates a pronunciation command according to the operation content of the user, and outputs this to the sound system 205. .

Although not particularly shown, the sound system 205 includes, for example, a waveform ROM storing various tone waveform data, a sound source section for reading the waveform data from the waveform ROM, and a sound effect for the waveform data read by the sound source section. An analog waveform (musical sound) that is D / A converted from the added effector and digital waveform data output from the effector.
It is composed of a D / A converter that outputs a signal and a speaker that produces a musical sound by the waveform signal output by the D / A converter. By pronouncing a musical tone according to the pronunciation command input from the CPU 201, the musical tone is pronounced according to the operation performed on the keyboard 101 by the user.

The CPU 201 uses the sound system 2
In addition to outputting a sounding command to 05, sound source parameters that characterize the tones to be sounded are set. The sound source parameter is set when the user operates a predetermined switch of the switch group 102 or when the MIDI interface 206 receives MIDI data designating an acoustic parameter from an external device. Note that the sound source parameter is the type of waveform data (corresponding to a tone color) read from the waveform ROM, the type of acoustic effect added by the effector,
And its depth, volume, bread, etc.

MIDI interface 206 is MID
When the I data is received, the CPU 102 determines that MI
In addition to generating a pronunciation command according to the content of the DI data, outputting the sound command to the sound system 205, and setting acoustic parameters, the content of the MIDI data is displayed on the television 110 and the MIDI data according to the user's specification. Is recorded in the RAM 203.

The image display on the television 110 is performed as follows. For example, as mentioned above, MIDI
When displaying the MIDI data received by the interface 206, the CPU 201 analyzes the MIDI data and specifies the image data necessary for displaying the contents. After that, the specified image data is stored in the ROM 20.
The data is read from the data No. 2, processed as needed, and output to the image data output unit 204. In addition to this image data, the CPU 201 outputs coordinate data designating a position where the image data is displayed to the image data output unit 204.

The image data output unit 204 outputs the image data to the television 110 so that the image data is displayed at the display position indicated by the coordinate data. This image data is output to the television 110 in the form of a video composite signal based on the NTSC system for each operation line in correspondence with the screen display system of the television 110. As a result, MIDI data is displayed on the display screen of the television 110 in a preset display format.

On the other hand, the RAM 2 for the received MIDI data
The recording to 03 is performed as follows. RAM 20
A recording area (music data storage area) for recording music data is assigned to 3, and this recording area is divided into a plurality of recording target tracks. The recording target track is
The user operates the switch group 102 in advance to specify it. M
The recording of the IDI data in the RAM 203 is performed by sequentially writing the event data sent as a channel message in the MIDI data in the recording target track on the music data recording area of the RAM 203 designated by the user together with its input timing.

The music (event) data recorded in the RAM 203 can be edited. CPU 20
1 reads the music data (event data) recorded in a desired track on the music data recording area of the RAM 203 according to the content designated by the user in the switch group 102, and the data is read as shown in FIG. 7, for example. Are displayed on the television 110 in the form of a table in the order of performance. Using the switch group 102, the user can insert, delete, move, copy, etc. the music (event) data to the music (event) data displayed on the television 110.

The result of editing by the user and the result of changing the acoustic parameters as described above are stored in the RAM 2
This is reflected in the content of the music data in the music data recording area No. 03, or in the automatic performance by the MIDI data being received.

To reproduce the music data in the music data recording area of the RAM 203, the CPU 201 sequentially reads out the event data from the reproduction target track in the storage area, creates a sound generation command for generating a musical sound with the read event data, It is performed by outputting it to the sound system 205. As a result, the automatic performance is performed in the same manner as when MIDI data is received.

The above is the configuration of the electronic musical instrument 100 and the schematic operation of each unit. Next, referring to FIGS. 3 to 6, the RAM 2
The data format of the music data stored in 03 will be described.

In the first embodiment, the music data is a track including event data of each bar, a bar block in which event data of continuous 128 bars is a unit, and a track including a maximum of eight bar blocks, 16 The feature is that they are hierarchically managed by using each unit called a musical piece whose unit is a track.

First, the track use status data SNG_TRK_USE shown in FIG. 3 is 16-bit data and is set for each music piece. Whether or not each of the tracks 0 to 15 is used in the automatic performance of music is set in each data by a flag of "1" or "0". The least significant bit of this data corresponds to track 0, and the most significant bit corresponds to track 15.

The array SNG_BAR_ shown in FIG. 4 (a)
The TBL contains 0th track for each song and each track in each song.
Arrangement SNG_BAR_PTR shown in FIG. 4 (b) corresponding to each of eight measure blocks obtained by dividing 1024 measures of measures to 1023 measures into 128 measures.
The head element information of each of the 128 array data groups is stored. The maximum number of bar blocks that can be defined in the array SNG_BAR_PTR is 32, for example. In that case, in the array SNG_BAR_TBL, 0x00 to 0x1f (decimal number 0) is set as the bar block head element information.
(Corresponding to ~ 31) is stored. The value obtained by multiplying the value of this bar block head element information by 128 is
Array SNG_BAR_PT corresponding to the bar block
It is the head element number of the 128 array data groups in R.
However, the value 0xff is set as the head element information of each bar block of the unused track and the head element information of the unused bar block in the used track.

The array SNG_BAR_ shown in FIG. 4 (b)
In the PTR, the head element numbers of the event data group in the array SNG_SONG shown in FIG. 4C corresponding to 128 bars in each bar block are stored for each bar block described above. The maximum number of event data that can be defined in the array SNG_SONG is 16384, for example.
It is an event. In that case, the array SNG_BAR_PT
In R, any value of 0x0000 to 0x4000 (corresponding to decimal numbers 0 to 16383) is stored as the head element number of the event data group corresponding to each measure. However, the value 0xffff is set as the head element number corresponding to the bar of all rests.

Sequence SNG_SONG shown in FIG. 4 (c)
The event data, which is continuous in units of bars as described above, is stored in the. One event data is composed of 3-word data as described later. However, the array S
NG_SONG is divided into 32 event data blocks (for 16384 event data) in units of 512 event data. Here, when the event data group in one bar is divided into two event data blocks, jump event data described later is stored at the end of the first event data block,
Also, jump source event data, which will be described later, is stored at the beginning of the second event data block.

FIG. 5 shows the array SNG_SONG of FIG. 4 (c).
FIG. 3 is a diagram showing a data format of note event data and control event data forming the event data group stored in FIG.

The note event data shown in FIG. 5 (a) corresponds to the notes of the musical score, and contains a plurality of information necessary for the processing of producing a single note. That is, in the first word of the note event data, the upper 7 bits represent the pitch number and the lower 7 bits represent the velocity. The second word of the note event data indicates the time position from the beginning of the bar including the note corresponding to the note event data in an appropriate unit (clock of 1/480 beat in the first embodiment). ) Is the value counted. The third word of the note event data is the gate time obtained by counting the sounding time of the note corresponding to the note event data in the appropriate unit described above.

The control event data shown in FIG. 5 (b) is event data other than the note event data described above, which is necessary for controlling the reproduction of music, and the most significant bit of the first word is 1. This distinguishes it from note event data. This control event data further includes a meta event data group, a jump event data group, and a command event data group.
Classified into one. The meta event data group includes information about the tempo, time signature, and key of the entire song. The jump event data group includes track end,
It includes information about the position control of event data such as the end of a bar and jump to the next processing data. Further, the command event data group includes information for adding a modifying effect to the musical sound, such as volume, program change (tone color), and vendor. The lower 7 bits of the first word of the control event data indicate a control code, and the control content is determined by this code. For example, the value of the first word corresponding to the tempo event data of the meta event data group is 0xff00, the value of the first word corresponding to the bar end event data of the jump event data group is 0xff11 (see FIG. 6 (b)), the command The value of the first word corresponding to the program change event data in the event data group is 0xff20. The second word of the control event data is a value obtained by counting the time position from the beginning of the bar where the control corresponding to the control event data is executed, in the appropriate unit described above. In the third word of the control event data, a necessary control value other than the control code is stored. For example, the third word of the tempo event data of the meta event data group is the tempo number, and the third word of the jump event data of the jump event data group is the event data of the jump destination in the array SNG_SONG (Fig. 4 (c)). A tone color number is stored in the third word of the program change event data of the element number and command event data group.

Next, four types of event data forming the jump event data group of the above-mentioned control event data will be described. FIG. 6 shows these four
It is a figure which shows each data format of event data of a kind.

First, the track end event data of FIG. 6A is inserted at the end position of the event data group of each track as the final event data of that track.
Next, the bar end event data of FIG. 6B is inserted at the end position of the event data group of each bar as the final event data of that bar.

Further, the jump event data of FIG. 6 (c) and the jump source event data of FIG. 6 (d) are shown in FIG.
In the array SNG_SONG of (c), when the event data group in one bar is divided into two event data blocks of 512 events, respectively,
It is stored at the end of the second event data block and at the beginning of the second event data block. In this case, the array SNG_S is included in the third word of the jump event data.
The element number of the event data of the jump destination in the ONG is stored, and the element number of the event data of the jump source is also stored in the third word of the jump source event data.

Regarding the four types of event data shown in FIGS. 6A to 6D, in the event data editing process and reproducing process, the currently processed event data belongs to the jump event data group by the first word. When the event is recognized, the process corresponding to each event data is immediately executed. Therefore, the second word of each of these event data may have any value. Also, the third word of the track end event data and the bar end event data may be any value.

By adopting the data format of the music data of FIGS. 3 to 6 explained above, it becomes possible to execute the control relating to the automatic performance very efficiently. Here, the expression of music data is used mainly when the data of the entire automatic performance is intended, and this music data corresponds to the sequence data.

The user can quantize the music data recorded in the RAM 203 in the above data format. In this quantize, the sounding start timing of the event data within the designated range is automatically changed.

The range to be quantized is specified as follows. This will be described with reference to FIG. FIG. 7 is a diagram illustrating a range specifying method of the quantize process.
The state up to the result of actually specifying a range for the event data displayed on the television 110 and then performing quantize is shown.

First, how to view the event data displayed in FIG. 7A will be described in the order of the event data of the uppermost row and the lowermost row as an example. The event data displayed at the top is basically composed of three items. Specifically, "0001/1/000",
There are three items, “PRGCHG 001” and “PIANO”.

The first item "0001/1/000" is
It is a timing item indicating the start timing at which the process based on the event data is performed. Each numerical value separated by a slash represents, from the left, the bar number, the number of beats, and the timing (the number of steps) within that number of beats. In the first embodiment, the resolution of one beat is 480 clocks. The timing is a value expressed based on this resolution. The number of steps indicates the timing within the number of beats expressed by the number of clocks.

The next item "PRGCHG 001" is a command item indicating the command type of the event data. In this case, the control event data designates the change of the tone color, and indicates that the tone color of the tone color number "001" is designated.

The last item "PIANO" is a parameter item indicating the type of tone color corresponding to the tone color number "001". In this case, the timbre number "001" represents that it is a piano.

The event data displayed at the bottom shows that the data has the following contents.
Regarding the first item "0001/3/120",
The view from the top is the same. Therefore, the meanings of the items that follow will be described.

The second item "NOT" following the first item
"E" indicates that the command type of the event data is a sounding command. Hereinafter, the third item "G4"
Indicates the pitch, the fourth item “80” indicates velocity, and the last item “720” indicates gate time.

Designation of the range for the event data expressed as described above and start of the quantize process are performed using the switches SW6 to SW9 and the switch SW1 which are cursor keys.

Specifically, first, the switches SW6 to SW6
After using 9 to move the cursor displayed in a frame on the screen to the beginning of the desired range, the switch SW1 is operated. As a result, the start position of the range is designated. 7A shows the initial state, and FIG. 7B shows the state shown in FIG.
The state is shown when the cursor is moved from the initial state of and the start position of the range is specified.

After the start position of the range is designated, the end position of the range is designated next. This is specified by the same operation as the specification of the start position of the range. FIG. 7C shows a state in which the cursor is moved from the state of FIG. 7B and the end position of the range is designated.

By specifying the start position and end position in this way, the range to be quantized is determined. After that, when the switch SW1 is operated again, the quantizing process for the process within the designated range is performed. FIG. 7D shows the state after the quantize process.

Next, various kinds of processing realized as an operation in which the CPU 201 executes the control program stored in the ROM 202 will be described with reference to the operation flowcharts of FIGS. 8 to 10 and the explanatory view of FIG.

First, the overall processing will be described with reference to the operation flowchart shown in FIG. Particularly, when a user turns on (turns on) a power switch (not shown), first, in step 801, initial processing such as clearing a register in the CPU 201 and a work area of the RAM 203, and initial setting is performed. When this initial process ends, the process moves to step 802.

In step 802, a switch process is performed to respond to the contents of the operation performed on the switch group 102 by the user. In the following step 803, other processing such as keyboard processing for causing the user to sound a musical tone according to the content of the operation performed on the keyboard 101 is executed, and then the processing returns to step 802.

As described above, by repeating the processing of steps 802 to 803, the user can switch group 102,
The electronic musical instrument 100 operates in response to an operation performed on the keyboard 101 or the like.

Next, the switch processing in step 802 will be described in detail with reference to the operation flowchart shown in FIG. First, in step 901, it is determined whether the switch SW1 is turned on. Switch SW1
Is a switch for instructing the quantize on the event data, as described above. When the user operates the switch SW1, the determination becomes YES and the process proceeds to step 902. Otherwise, the determination is no and the process moves to step 907.

At step 902, the value of the quantize processing flag is determined. The process following step 902 is performed according to the value of the quantize process flag.
As described with reference to FIG. 7, the switch SW1 is used to specify the range of the quantize process and to execute the process. The quantize processing flag is a variable for managing the progress from the range designation to the execution of the quantize processing according to the operation on the switch SW1. This variable is held in the register in the CPU 201 or the RAM 203.

If it is determined in step 902 that the value of the quantize processing flag is 0, then in step 90
Step 3 is executed. In step 903, assuming that the start position of the quantize range is designated, the event data where the cursor is displayed is registered as the start position. In addition to the registration of the start position, the quantize process flag is incremented (= 1). Then, the process proceeds to step 906.

If it is determined in step 902 that the value of the quantize processing flag is 1, then step 90
4 is executed. In step 904, assuming that the end position of the quantize range is designated, the event data in which the cursor is displayed is registered as the end position. In addition to the registration of the end position, the quantize process flag is incremented (= 2). Then, the process proceeds to step 906.

If it is determined in step 902 that the value of the quantize processing flag is 2, then in step 90
Process 5 is executed. In step 905, the quantize process is executed for the event data in the range determined by executing the processes of steps 903 and 904. By executing this quantize process, the quantize process flag is reset, that is, 0 is substituted into the quantize process flag. Then, the process proceeds to step 906. The details of this quantizing process will be described later.

At step 603, other processing corresponding to the operation performed by the user on the other switches of the switch group 102 is executed. When this other processing ends, a series of processing ends here, and then step 80 in FIG.
The other processing of No. 3 is executed.

In step 901, the switch S
If it is determined that W1 has not been turned on, step 90
The process shifts to 7. In step 907, the switch S
It is determined whether W2 is turned on. This switch SW2
Is a switch for instructing to cancel the progress to the quantize process, that is, to return to the initial state.
When the user operates the switch SW2, the determination is Y
It becomes ES and shifts to the processing of step 908. Otherwise, the determination is no and the process moves to step 906.

In step 908, cancel processing is performed to invalidate all the progress up to that point. By executing this cancel processing, if the start position and the end position have been designated by then, those information are erased, and 0 is substituted for the quantize processing flag. When this process ends, the process moves to step 906.

FIG. 10 is an operation flowchart of the quantize process in step 905. The processing operation will be described in detail with reference to FIG. Before describing the processing operation, the method of processing the quantize according to the first embodiment will be described with reference to FIG. FIG.
It is a figure which shows the time length of one bar | burr in each time signature. The time length is the resolution in the first embodiment, that is, 1
The number of clocks per beat is expressed as 480. The time signature is a parameter defined (set) by the number of clocks in the measure.

In FIG. 11, from the top, 4/4 time, 17
The time length in each of the / 16 time signature and the 9/8 time signature is represented by the number of clocks. The number of clocks per beat (quarter note), that is, the resolution is set to 480 according to the first embodiment. Therefore, for example, in the case of the 4/4 time signature, the clock number of the bar is 1920 (= 48).
0x4). In practice, since the value of the number of clocks at the beginning of the bar is set to 0, the temporal position within one bar of 4/4 time is represented by the number of clocks from 0 to 1919. For the same reason, the first beat is the number of clocks from 0 to 479, and 480 is the head of the second beat. The same applies hereinafter, and when the number of clocks is 1920, it is the beginning of the next bar.

In other beats, the number of clocks in 17/16 beat is 2040 (= 480 × 4 × 17/1).
6), the number of clocks of 9/8 beat is 2160 (= 480 x
4 × 9/8).

Conventionally, the quantize processing is basically based on correcting the deviation of the timing by equally dividing the designated range and changing the sounding start timing of the event data at the evenly divided timing. . However, in the first embodiment, even if a range including a plurality of measures is specified, each event is divided into each measure and the event data in the measure is quantized.

The quantize process for each bar is performed as follows. For example, in the case of performing a quantize process in quarter note units with a time signature of 4/4, the sounding start timing of the event data in the bar is matched with any of the timings shown by vertical lines in FIG. Similarly, 17/1
When the quantize process is performed for each 6-beat and 9 / 8-beat measure with a note that is a unit of one beat, the sounding start timing of the event data for that measure is indicated by a vertical line in each. Will be corrected to the timing of.

The modification of the sound generation start timing is performed in accordance with, for example, a ratio (offset) indicating which one of the sound generation start timings positioned between the corrected timings shown by the adjacent vertical lines is matched. . For example, if the offset is 50%, 4 /
The third beat (clock number 144
The tone generation timing located between the 0th and the 4th beat (the clock number is 1919) is the clock number 1680 (= 192
0-480 / 2) as a boundary, if the number of clocks is smaller than that, the number of clocks is corrected to 1440, and if it is larger than that, the number of clocks is corrected to 1920, that is, to the beginning of the next bar.

By performing such quantizing processing independently for each bar, even if the time signature (clock number) of a bar within the range to be quantized is changed, the change will not occur. It is avoided to affect. Therefore, by changing the time signature (clock number) of the measure, the sound generation start timing of the event data does not differ greatly from what the user intended, and the user can easily apply the intended quantize. Like

Returning to the description of FIG. 10, the quantize process according to the first embodiment will be described with reference to the operation flowchart. First, in step 1001, the RAM 203 is used to execute the quantize process.
Performs initial processing such as securing the work area. When this initial process ends, step 100
The process shifts to 2.

In step 1002, the clock number of the bar indicated by the current bar is investigated. This current measure is CPU
It is a register held in 201 or a variable held in RAM 203, and a value indicating a bar to be processed at present is substituted. In the initial processing of step 1001, the value indicating the measure at the head position registered in step 903 of FIG. 9 is substituted for this current measure.

The number of clocks of the bar is stored as the second word in the event data at the beginning of the next bar (see FIG. 5). The event data at the beginning of the next bar is
As shown in FIG. 4, an area in which the head element number of the track to be quantized in the array SNG_BAR_TBL is specified from the array SNG_BAR_TBL,
By sequentially searching for the top element number in the area of the specified array SNG_BAR_PTR, the array SNG_S
Access that data in the ONG.

When the number of bars of the measure is obtained in step 1002, the process proceeds to step 1003. In this step 1003, the number of clocks at the tone generation start timing to be moved to the next bar is investigated.

According to this survey, for example, the time signature of the measure is 4 /
If the offset is 50% with four beats, as shown in FIG. 11, the number of clocks 1680 is calculated as the timing to move to the next bar.

Step 1004 following step 1003
Then, it is determined whether or not there is event data in the measure indicated by the current measure. If there is no event data in the measure, the determination is yes and the process moves to step 1011. Otherwise, the determination is no and the process moves to step 1005.

At step 1005, the head event data of the bar is set. At this time, as described with reference to FIG. 11, the tone generation start timing of the quarter note or the like is corrected based on the unit and the offset in the quantize.

Step 1006 following step 1005
Then, it is determined whether the previously processed event data is the last event data of the bar. If all the event data in the measure to be processed have been processed, the determination becomes YES and the process moves to step 1011. Otherwise, the determination is no and the process moves to step 1007.

In step 1007, it is determined whether the event data to be processed next is the event data to be moved to the next bar. This determination is made by comparing the number of clocks obtained in the investigation in step 1003 with the number of clocks from the beginning of the bar of the event data (see FIG. 5). If the number of clocks from the beginning of the bar of the event data is equal to or greater than the number of clocks obtained in the investigation, the determination is YES and the process proceeds to step 1009.
Otherwise, the determination is no and step 10
The processing shifts to 08.

In step 1008, the tone generation start timing of the event data, that is, the number of clocks from the beginning of the bar is changed in the bar to which it belongs. On the other hand, in step 1009, the start timing of the next bar is reached.
Change the number of clocks from the beginning of that bar. In the process of step 1009, the data in the array SNG_BAR_PTR shown in FIG. 4 is rewritten if necessary.

When the process of step 1008 or 1009 is completed, the process proceeds to step 1010. In this step 1010, the next event data in the bar indicated by the current bar is read. After this reading is completed, the process returns to step 1006.

By repeating the processing loop of steps 1006 to 1010 described above, each event data in the bar indicated by the current bar is sequentially processed, and its sounding start timing, that is, the number of clocks from the beginning of the bar is determined as necessary. Be changed.

On the other hand, in step 1011, it is determined whether or not the measure indicated by the current measure is the last measure to be processed. If the measure indicated by the current measure is the measure at the end position registered in step 904 of FIG. 9, the determination is yes and the process moves to step 1012. Otherwise, the determination is no and the process moves to step 1013.

At step 1012, since the quantizing within the range designated by the user is completed, 0 is substituted into the quantizing processing flag. Thereafter, a series of processing ends.

At step 1013, since the quantize in the range designated by the user has not been completed, the current measure is incremented. After this increment is completed, the process returns to step 1002.

In the first embodiment, the quantize is carried out regardless of the type of the event data, but the quantize may be carried out only for note event data. In some cases, the reverse is also possible.

Further, although the quantizing range is specified and the quantizing process is executed by using the same switch SW1, it is possible to divide the roles among a plurality of switches and execute them. good.

Further, the above offset may be arbitrarily designated so that a wide range of quantization can be applied, and sensitivity or the like for determining the effective range from the reference may be prepared.

Next, a second embodiment will be described. In the first embodiment, even if the event data is moved to the next bar as a result of quantizing each bar,
If the measure that has been quantized is the final measure in the format, there is no measure to move, so the moved event data will not be sounded. The second embodiment is designed to avoid the occurrence of such event data that causes no sound.

The second embodiment is basically the same as the configuration of the first embodiment. Therefore, the same reference numerals as in the first embodiment are used, and only the parts different from the first embodiment will be described.

FIG. 12 is an operation flowchart of the quantize process according to the second embodiment. This quantize process is executed as the process of step 905 in FIG. The processing operation will be described with reference to FIG.

First, in step 1201, initial processing such as securing a work area of the RAM 203 is executed to execute the quantize processing. When this initial process ends, the process moves to step 1202.

In step 1202, the clock number of the bar indicated by the current bar is investigated. This current measure is CPU
It is a register held in 201 or a variable held in RAM 203, and a value indicating a bar to be processed at present is substituted. In the initial process of step 1201, the value indicating the measure at the head position registered in step 903 of FIG. 9 is substituted for this current measure.

The number of clocks of the bar is stored as the second word in the event data at the head of the next bar (see FIG. 5). The event data at the beginning of the next bar is
As shown in FIG. 4, an area in which the head element number of the track to be quantized in the array SNG_BAR_TBL is specified from the array SNG_BAR_TBL,
By sequentially searching for the top element number in the area of the specified array SNG_BAR_PTR, the array SNG_S
Access that data in the ONG.

When the clock number of the measure is obtained in step 1202, the process proceeds to step 1203. In this step 1203, the number of clocks at the tone generation start timing to be moved to the next bar is investigated.

According to this investigation, for example, the time signature of the bar is 4 /
If the offset is 50% with four beats, as shown in FIG. 11, the number of clocks 1680 is calculated as the timing to move to the next bar.

Step 1204 following step 1203
Then, it is determined whether or not there is event data in the measure indicated by the current measure. If there is no event data in that measure, the determination is yes and the process moves to step 1213. Otherwise, the determination is no and the process moves to step 1005.

At step 1205, the leading event data of the bar is set. At this time, as described with reference to FIG. 11, the tone generation start timing of the quarter note or the like is corrected based on the unit and the offset in the quantize.

Step 1206 following step 1205
Then, it is determined whether the previously processed event data is the last event data of the bar. If all the event data in the measure to be processed have been processed, the determination becomes YES and the process moves to step 1213. Otherwise, the determination is no and the process moves to step 1207.

At step 1207, it is determined whether or not the event data to be processed next is the event data to be moved to the next bar. This determination is made by comparing the number of clocks obtained in the investigation in step 1203 with the number of clocks from the beginning of the bar of the event data (see FIG. 5). If the number of clocks from the beginning of the bar of the event data is equal to or more than the number of clocks obtained in the investigation, the determination is YES and the process proceeds to step 1210.
Otherwise, the determination is no and step 10
The processing shifts to 08.

In step 1208, the tone generation start timing of the event data, that is, the number of clocks from the beginning of the bar is changed in the bar to which it belongs. Next step 1
At 209, the next event data in the bar indicated by the current bar is read. After this reading is completed, the process returns to step 1206.

At step 1210, it is determined whether or not the measure indicated by the current measure is the last measure in the format. If the last measure is quantized, the determination is yes and the process moves to step 1211. Otherwise, the determination is no and step 121.
The process shifts to 2.

In step 1211, the number of clocks from the beginning of the bar of the currently processed event data (sound generation start timing) is changed to the final timing of the bar to which it belongs. As a result, it is possible to avoid that the event data is not sounded. At this time, if the last bar has a time signature of 4/4, the number of clocks from the head of the bar is changed to 1919.

On the other hand, in step 1212, the number of clocks from the start of the next bar is changed so that the start timing of the next bar is reached. In the processing of this step 1212,
If necessary, the sequence SNG_BAR_PTR shown in FIG.
The data inside is also rewritten.

When the processing of the above step 1211 or 1212 is completed, the processing shifts to the processing of step 1209. Next, a third embodiment will be described.

The sequencer function allows the user to edit (copy, delete, change, etc.) various event data. However, for example, if the sounding start timing of the event data is changed to the sounding start timing outside the bar to which it belongs, the event data and further subsequent event data may not be sounded. The change may adversely affect the processing related to other displays. In the third embodiment, the change of the tone generation start timing is restricted so that such a problem does not occur.

Like the second embodiment, the third embodiment is basically the same as the configuration of the first embodiment. Therefore, the same reference numerals as in the first embodiment are used, and only the parts different from the first embodiment will be described.

FIG. 13 is a diagram for explaining a method of changing the tone generation start timing in the third embodiment. The changing method will be described with reference to FIG. In the third embodiment, the switch SW2 and the switch S of FIG.
W3 is used as a switch for changing event data.
Further, the cursor displayed on the screen moves on the screen according to the operation on the switches SW6 to SW9, as in the first embodiment.

FIG. 13A shows switches SW2 and S.
The state before operating W3, that is, before the change is shown. In FIG. 13A, the number of steps "240" in the bottom row is designated by the cursor. When the switch SW6 (upper switch) is operated in this state, the cursor moves to the step number "000" on the line immediately above.
When the switch SW7 (down switch) is operated, the screen scrolls downward to the number of steps not currently displayed on the line below the switch SW8.
When the (left switch) is operated, it moves to the left beat number "3", and when the switch SW9 (right switch) is operated, it moves to the right "NOTE".

FIG. 13B shows a state after the switch SW3 is operated once from the state of FIG. 13A. As can be seen by comparing FIGS. 13A and 13B, the switch SW3 is a switch for instructing the decrease of the value of the item designated by the cursor. The other switch SW
On the contrary, 2 is a switch for instructing the increase of the value.
In the item indicating the command type of the event data such as “NOTE”, the term indicating the command type of the event data changes in a predetermined order every time the switch SW2 or SW3 is operated.

In this way, the user selects the switch SW.
By operating 2, SW3, and SW6 to SW9, the event data can be changed. next,
FIG. 1 shows various control processes according to the third embodiment.
This will be described in detail with reference to FIGS. Note that, as described above, also in the control processing, only the parts different from the first embodiment will be described.

FIG. 14 is an operation flowchart of the switch processing according to the third embodiment. This switch process is executed as the process of step 802 in FIG. The switch processing according to the third embodiment will be described in detail with reference to FIG.

First, in step 1401, the switch S
It is determined whether W1 is turned on. The switch SW1 is
This is a switch for setting an event list mode for displaying event data on the television 110. If the user operates the switch SW1 to set the event list mode, the determination is YES and step 14
The processing moves to 02. Otherwise, the decision is N
When it becomes O, the process proceeds to step 1403.

In step 1402, event list mode processing for realizing the set event list mode function is executed. After that, the processing shifts to the processing of step 1403. Details of this event list mode processing will be described later.

At step 1703, the switch group 102
Other processing according to the operation performed by the user on the other switch is executed. When this other process ends,
Here, a series of processing is also completed, and thereafter, step 8 in FIG.
Other processing of 03 is executed.

FIG. 15 is an operation flowchart of the event list mode processing executed in step 1402. The event list mode processing will be described in detail with reference to FIG.

First, at step 1501, initial processing such as clearing the register of the CPU 201, the work area of the RAM 203, initial setting, etc. is carried out when the event list mode is set. In this initial process,
A process of reading the music data stored in the track on the music data recording area of the RAM 203 designated by the user and displaying the music data on the television 110 is also performed. In addition,
The screen on which this event data is displayed will be referred to as an event list screen hereinafter.

Step 1502 following step 1501
Then, the list mode switch processing corresponding to the function at the time of setting the event list mode assigned to each switch of the switch group 102 is executed. After that, in step 1503, the switches SW6 to SW which are cursor switches.
Along with the movement of 9, the other processes including the process related to the display such as scrolling the screen are executed, and then the series of processes is ended.

FIG. 16 is an operation flowchart of the list mode switch process executed in step 1502. The list mode switch process will be described in detail with reference to FIG.

First, in step 1601, the switch S
It is determined whether W2 is turned on. As described above, the switch SW2 is used to instruct the increase of the value of the item designated by the cursor. User switches S
When W2 is operated, the determination is YES and the process proceeds to step 1602. Otherwise, the determination is no and the process moves to step 1603.

At step 1602, 0 is assigned to the up / down flag. The up / down flag is substituted with a value indicating whether or not the user's instruction is increased.
1 or a variable held in the RAM 203. If the user's instruction is an increase instruction, 0 is substituted, and if it is a decrease instruction, 1 is substituted. When the process of step 1602 is completed, the process proceeds to step 1605.

At the other step 1603, the switch S
It is determined whether W3 is turned on. As described above, the switch SW3 is used to instruct the decrease of the value of the item designated by the cursor. User switches S
When W3 is operated, the determination is YES, and the process proceeds to step 1604. Otherwise, the determination is no and the process moves to step 1611.

At step 1604, 1 is assigned to the up / down flag. When the process of step 1604 is completed, the process proceeds to step 1605. At step 1605, the currently selected item is determined.
This determination is made based on the display position where the cursor is currently displayed. According to the determination result, step 160
The process subsequent to 5 is determined.

When it is determined in step 1605 that the currently selected item is timing, the process proceeds to step 1606. In step 1606, it is determined whether the item selected from the timing items is a beat. For example, in FIG. 13A, "240" in which the cursor is displayed is a step, and "3" to the left of it is the number of beats. If the cursor is displayed at the beat number position, the determination is yes and step 16
The process moves to 07. Otherwise, the decision is N
When it becomes O, the process proceeds to step 1608.

At step 1607, beat changing processing for changing the number of beats is performed according to the type of switch operated by the user (SW2 or SW3). Thereafter, a series of processing ends.

At the other step 1608, step change processing for changing the number of steps is performed in accordance with the type of switch operated by the user (SW2 or SW3). Thereafter, a series of processing ends.

If it is determined in step 1605 that the currently selected item is a command, step 1
The processing moves to step 609. In step 1609, the type of switch operated by the user (SW2 or SW3)
Depending on, the process of changing the command type of the event data is performed. Thereafter, a series of processing ends.

When it is determined in step 1605 that the currently selected item is a parameter, the process proceeds to step 1610. In step 1610, the type of switch operated by the user (SW2 or SW
According to 3), the process of changing the parameter type is performed. Thereafter, a series of processing ends.

On the other hand, if NO in step 1603, the process moves to step 1611. In step 1611, it is determined whether the switches SW6 to SW9, that is, the cursor switch is turned on. If the user operates the cursor switch, the determination is yes and the process moves to step 1612. If not, the determination is NO, and the series of processes ends here.

At step 1612, a cursor moving process for moving the cursor is performed according to the type of the switch turned on. By this cursor movement processing, the cursor corresponds to the operation on the switches SW6 to SW9,
Items will be moved on the event list screen. After this cursor movement processing is completed, a series of processing is completed.

In this way, the content of each item of the event data is changed according to the content of the operation performed by the user. FIG. 17 is an operation flowchart of the beat changing process in step 1607. Next, the beat changing process will be described in detail with reference to FIG.

In steps 1701 to 1704, values required for changing the beat are substituted into various variables. First, in step 1701, the second word of the event data designated by the cursor, that is, the number of clocks from the beginning of the bar (see FIG. 5) is set to the variable timing_.
Substitute in data. In the next step 1702, this variable is
The number of beats and the number of steps are obtained from the value of timing_data, and these values are substituted into variables beat_num and step_num, respectively. Then, the process proceeds to step 1703.

The variable beat_num and the variable step_num are
It is a value corresponding to the beat portion and the step portion of the displayed timing item. For example, the number of clocks from the beginning of the bar, that is, the value of the variable timing_data is 1200 and the time signature is 4
In the case of / 4 time signature (the number of clocks per beat is 480), the values of the variable beat_num and the variable step_num are
It becomes 2,240 respectively. That is, the variable beat_num,
Each value of the variable step_num is a quotient and a remainder when the number of clocks from the beginning of the bar is divided by the number of clocks of one beat.
Note that the above example is an example of the timing item in the bottom row in which the cursor is displayed in FIG.

At step 1703, the variable bar clock is set.
Substitute the clock number of the measure (hereinafter referred to as the current measure) to which the event data designated by the cursor belongs to. Then, in step 1704, the maximum value of the number of beats in the current bar and the number of steps when the number of beats is set to the maximum value are obtained from the value of the variable bar clock, and these values are set as variables.
Substitute in beat_max and variable step_max.

For example, when the time signature is 4/4 time signature,
Variable bar_clock, variable beat_num, and variable step_num
The respective values of are 1, 1920, 3, 479, respectively.
If the time signature is 9/8, the variable bar_cloc
The values of k, the variable beat_num, and the variable step_num are 2160, 4, 239, respectively. Variable beat_num
, And the values of the variable step_num are the quotient and the remainder when the clock number of the bar is divided by the clock number of one beat.

The number of clocks of the current measure is stored as the second word in the event data at the beginning of the next measure (see FIG. 5). As shown in FIG. 4, the event data at the head of the next bar specifies the area in which the head element number of the track to be quantized in the array SNG_BAR_TBL is stored in the area of the specified array SNG_BAR_PTR, as shown in FIG. By sequentially searching for the first element number of
Access that data in _SONG.

Step 1705 following step 1704
Then, it is determined whether or not the value of the variable step_num is larger than the value of the variable step_max. The value of the variable step_num is the variable step
If it is larger than the value of _max, the determination is yes and the process moves to step 1706. Otherwise, the determination is no and the process moves to step 1707. In step 1706, the value of the variable beat_max is decremented, and then the process proceeds to step 1707.

The processing of steps 1705 and 1706 is performed for the following reason. In the third embodiment, the number of clocks of the event data from the beginning of the bar does not exceed the number of clocks of the bar. For example, if the time signature of the current measure is 9/8, the variable step_max is set to 2
39 and 4 are assigned to the variable beat_max.

The value of the variable step_num (the number of steps) allowed in the value of each variable beat_num (the number of beats) is the variable beat_nu.
0 to 23 when the value of m (beats) is 4 (variable beat_max)
9, 0-47 when the variable beat_num (beats) is 0-3
9

In the above example, if the value of the variable step_num is larger than the value of the variable step_max and the value of the variable beat_num is changed from 3 to 4, the number of clocks from the beginning of the changed bar exceeds the number of clocks of the bar. Will end up. However, in this case, when the value of the variable beat_max is decremented, the value of the variable beat_num becomes 3 as the upper limit value, and the number of clocks from the beginning of the bar after the change is prevented from exceeding the number of clocks of the bar. That is, for example, the number of beats is 3 and the number of steps is 479, and the number of beats is 4 and the number of steps is not changed to 479. Step 1
In order to achieve this, 705 and 1706 use the variable beat.
This is a process for correcting the value of _max.

In the processing after step 1707, the number of beats, that is, the value of the variable beat_num is changed according to the user's operation on the switch SW2 or SW3, and the change is reflected in the event data stored in the RAM 203. Is done.

First, in step 1707, the value of the up / down flag is determined. When the user operates the switch SW2, the value of the up / down flag becomes 0, and the process proceeds to step 1708.

In step 1708, it is determined whether the value of the variable beat_num is not equal to the value of the variable beat_max. If the value of the variable beat_num is equal to the value of the variable beat_max, that is, if the value of the variable beat_num is the upper limit value, the determination is NO and the process proceeds to step 1710. Otherwise, the determination is yes and the process moves to step 1709.

At step 1709, the value of the variable beat_num is incremented. As a result, the number of displayed beats is increased according to the content instructed by the user. The value of the variable beat_max is the variable step as described above.
It is corrected according to the value of _num. Therefore, the variable be
Even if at_num is incremented, the number of clocks from the beginning of the measure does not exceed the number of clocks of the measure. After the process of step 1709 is completed, the process proceeds to step 1710.

In step 1710, the value of the variable timing_data, that is, the number of clocks from the beginning of the bar is obtained from the value of the variable beat_num and the value of the variable step_num. this is,
The calculation is performed by the reverse method of step 1702. When the number of clocks from the beginning of the bar is calculated, the next step 171
1, the number of clocks is set to the second of the event data.
The process of writing the word in the RAM 203 is performed.

On the other hand, if it is determined in step 1707 that the value of the up / down flag is 1, step 171
The process shifts to 2. In this case, the user selects switch S
This is the case when the operation of W3 is performed.

In step 1712, it is determined whether the value of the variable beat_num is not equal to 0. If 0 is displayed as the number of beats, the determination is NO and step 1
The processing moves to 710. Otherwise, the determination is yes and the process moves to step 1713.

At step 1713, the value of the variable beat_num is decremented. As a result, the number of displayed beats is reduced according to the content instructed by the user. Then, the process proceeds to step 1710.

As described above, when the user gives an instruction to change the number of beats, the tone generation start timing (the number of clocks from the beginning of the measure) after the change is monitored according to the instruction content so that the timing does not fall outside the measure. However, the number of beats is changed.

FIG. 18 is an operation flowchart of the step changing process in step 1608. The step changing process will be described in detail with reference to FIG.
In steps 1801 to 1804, values required for changing the number of steps are assigned to various variables.

First, in step 1801, the second word of the event data designated by the cursor, that is, the number of clocks from the beginning of the bar (see FIG. 5) is set to the variable timing_da.
Substitute in ta. In the following step 1802, this variable ti
The number of beats and the number of steps are obtained from the value of ming_data, and these values are substituted into variables beat_num and step_num, respectively. Then, the process proceeds to step 1803.

The variable beat_num and the variable step_num are
It is a value corresponding to the beat portion and the step portion of the displayed timing item. For example, the number of clocks from the beginning of the bar, that is, the value of the variable timing_data is 1200 and the time signature is 4
In the case of / 4 time signature (the number of clocks per beat is 480), the values of the variable beat_num and the variable step_num are
It becomes 2,240 respectively. That is, the variable beat_num,
Each value of the variable step_num is a quotient and a remainder when the number of clocks from the beginning of the bar is divided by the number of clocks of one beat.

At step 1803, the variable bar_clock
The clock number of the current measure to which the event data designated by the cursor belongs is assigned to. Then, step 180
In 4, the maximum value of the number of beats in the current bar and the number of steps when the number of beats is the maximum value are obtained from the value of the variable bar_clock, and these values are substituted into the variables beat_max and step_max, respectively.

For example, when the time signature is 4/4 time signature,
Variable bar_clock, variable beat_num, and variable step_num
The respective values of are 1, 1920, 3, 479, respectively.
If the time signature is 9/8, the variable bar_cloc
The values of k, the variable beat_num, and the variable step_num are 2160, 4, 239, respectively. Variable beat_num
, And the values of the variable step_num are the quotient and the remainder when the clock number of the bar is divided by the clock number of one beat.

The clock number of the current measure is stored as the second word in the event data at the beginning of the next measure (see FIG. 5). As shown in FIG. 4, the event data at the head of the next bar specifies the area in which the head element number of the track to be quantized from the array SNG_BAR_TBL is stored in the area of the specified array SNG_BAR_PTR, as shown in FIG. By sequentially searching for the first element number of
Access that data in _SONG.

Step 1805 following step 1804
Then, it is determined whether the value of the variable beat_num is equal to the value of the variable beat_max. The value of the variable beat_num is the variable beat_ma
If it is not equal to the value of x, the determination is yes and the process moves to step 1806. Otherwise, the determination is no and the process moves to step 1807. In step 1806, 479 is assigned to the variable step_max. Then, the process proceeds to step 1807.

The processing in steps 1805 and 1806 is performed for the following reason. In the third embodiment, the number of clocks of the event data from the beginning of the bar does not exceed the number of clocks of the bar. For example, if the time signature of the current measure is 9/8, the variable step_max is set to 2
39 and 4 are assigned to the variable beat_max.

The value of the variable step_num (the number of steps) allowed in the value of each variable beat_num (the number of beats) is the variable beat_nu.
0 to 23 when the value of m (beats) is 4 (variable beat_max)
9, 0-4 when the variable beat_num (beats) is 0-3
79.

As in the above example, the variable step_num depends on whether the value of the variable beat_num is equal to the value of the variable beat_max.
The upper limit as the value of num changes. Step 180
Reference numerals 5 and 1806 are processes for correcting the upper limit value of the number of steps which changes according to the number of beats to an appropriate value.

In the processing after step 1807, the number of steps, that is, the value of the variable step_num is changed according to the user's operation on the switch SW2 or SW3, and the change is reflected in the event data stored in the RAM 203. Is done.

First, in step 1807, the value of the up / down flag is determined. When the user operates the switch SW2, the value of the up / down flag becomes 0, and the process proceeds to step 1808.

In step 1808, it is determined whether the value of the variable step_num is not equal to the value of the variable step_max. If the value of the variable step_num is equal to the value of the variable step_max, that is, if the value of the variable step_num is the upper limit value, the determination is NO and the process of step 1810 is performed. Otherwise, the determination is yes and the process moves to step 1809.

At step 1809, the value of the variable step_num is incremented. As a result, the number of steps displayed is increased according to the content instructed by the user. The value of the variable step_num is corrected according to the value of the variable beat_num as described above. For this reason,
Even if the variable step_num is incremented, the number of clocks from the beginning of the measure does not exceed the number of clocks of the measure. After the process of step 1809 is completed, the process proceeds to step 1810.

At step 1810, the value of the variable timing_data, that is, the number of clocks from the beginning of the bar is obtained from the value of the variable beat_num and the value of the variable step_num. this is,
The calculation is performed by the reverse method of step 1802. When the number of clocks from the beginning of the bar is obtained, the next step 181
1, the number of clocks is set to the second of the event data.
The process of writing the word in the RAM 203 is performed.

On the other hand, if it is determined in step 1807 that the value of the up / down flag is 1, step 181
The process shifts to 2. In this case, the user selects switch S
This is the case when the operation of W3 is performed.

In step 1812, it is determined whether the value of the variable beat_num is not equal to 0. If 0 is displayed as the number of beats, the determination is NO and step 1
Then, the process proceeds to step 810. Otherwise, the determination is yes and the process moves to step 1813.

At step 1813, the value of the variable step_num is decremented. As a result, the number of steps displayed is reduced according to the content instructed by the user. Then, the process proceeds to step 1810.

As described above, when the user gives an instruction to change the number of steps, the sounding start timing (the number of clocks from the beginning of the bar) after the change is monitored according to the instruction content so that the timing does not fall outside the bar. However, the number of steps is changed.

In the third embodiment, as shown in FIG. 13, the number of clocks from the beginning of the bar of the event data is represented on the screen by the number of beats and the number of steps. The number of clocks may be displayed as it is on the screen as a numerical value.

Further, in the third embodiment, the change of the sounding start timing of the event data is limited. However, for the event data that exists in advance, the sounding start timing is set to be within the bar to which it belongs. Therefore, the pronunciation timing may be automatically corrected.

The first to third embodiments apply the present invention to the electronic musical instrument 100, but the application is not limited to this. INDUSTRIAL APPLICABILITY The present invention can be widely applied to a device equipped with a sequencer function including a sequencer.

[0177]

As described above, the sequence data quantizing method and the timing processing device according to the present invention, when a range spanning a plurality of measures is specified as a specified range, each measure is set as a measure. Then, the sound generation start timing of the sequence data is changed based on the time signature of the measure to which it belongs. Therefore, even if the playing time of the measure is changed, the change does not affect the quantize of other measures, and the user can easily perform the intended quantize.

Further, the sequence data timing processing apparatus of the present invention monitors the change in the sounding start timing of the sequence data by the user, and when it is the change in the sounding start timing to the outside of the bar to which it belongs, the change is made. Is disabled and prohibited, the sound generation start timing of the sequence data can be always maintained in an appropriate state.

[Brief description of drawings]

FIG. 1 is a diagram showing an appearance of a system to which a first embodiment is applied.

FIG. 2 is a block diagram of a configuration of an electronic musical instrument.

FIG. 3 is a diagram showing a data format of music data stored in a RAM 203 (No. 1).

FIG. 4 is a diagram showing a data format of music data stored in a RAM 203 (No. 2).

FIG. 5 is a diagram showing a data format of note event data and control event data.

FIG. 6 is a diagram showing a data format of a jump event data group.

FIG. 7 is a diagram illustrating a range specifying method of a quantize process.

FIG. 8 is an operation flowchart of the entire process.

FIG. 9 is an operation flowchart of switch processing.

FIG. 10 is an operation flowchart of a quantize process according to the first embodiment.

FIG. 11 is a diagram showing a temporal length of one bar in each time signature.

FIG. 12 is an operation flowchart of a quantize process according to the second embodiment.

FIG. 13 is a diagram illustrating a method of changing the sound generation start timing.

FIG. 14 is an operation flowchart of a switch process according to the third embodiment.

FIG. 15 is an operation flowchart of event list mode processing.

FIG. 16 is an operation flowchart of list mode switch processing.

FIG. 17 is an operation flowchart of beat change processing.

FIG. 18 is an operation flowchart of step change processing.

[Explanation of symbols]

 100 electronic musical instrument 102 switch group 110 television 201 CPU 202 ROM 203 RAM 204 image data output unit 205 sound system 206 MIDI interface

Claims (3)

[Claims] 1. A method of performing quantizing for changing the sound generation start timing of sequence data existing within a specified range, wherein when the range that spans a plurality of measures is specified as the specified range, the measure is processed as a unit. The method for quantizing sequence data is characterized in that, for each measure, the sounding start timing of the sequence data is changed based on the time signature of the measure to which it belongs. 2. A device for controlling a sound generation start timing of sequence data, wherein a specifying unit for specifying a range for changing the sound generation start timing of the sequence data, and the specifying unit specifies a range extending over a plurality of measures. When it is done, with each bar as the processing unit,
A sequence data timing processing device, comprising: a control unit that changes the sounding start timing of the sequence data based on the time signature of the bar to which it belongs. 3. An apparatus for controlling a sounding start timing of sequence data, wherein a designating unit for designating a sounding start timing of the sequence data, and a sounding start timing of the sequence data designated by the designating unit are Determination means for determining whether or not the sequence data is within a bar, and when the determination means determines that the sounding start timing of the sequence data is not within the bar to which the sequence data belongs, the designation by the designating means is performed. A sequence data timing processing device comprising: a control unit that invalidates the sequence data.