JPH10288984A - Musical sound synthesizing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To delicately set and vary a delay time. SOLUTION: An L-channel delay means 20 delays inputted musical performance data by a time calculated by multiplying a reference delay time ref as which the delay time of a note unit is set by L-channel delay rate information L- delay wherein a rate to the reference delay time is set, and outputs the result as an L-channel output. As for an R channel, an R-channel delay means 21 gives a delay calculated by multiplying the above-mentioned reference delay time ref by R-channel delay rate information R- delay wherein a rate to the reference delay time is set and outputs the result as an R-channel output. Consequently, a delicate delay time can be set relatively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a musical tone synthesizing apparatus for producing a musical tone in accordance with an input from a keyboard or stored performance data, and simultaneously producing the same musical tone with a delay from the tone generation start timing. It is about.

[0002]

2. Description of the Related Art In a tone synthesizer for producing musical tones in accordance with stored performance data and performance data inputted from a keyboard, a tone having a tone generation start timing according to the performance data and a tone generation start timing of the performance data are provided. Some have a tempo delay function that simultaneously generates a musical sound that is delayed for a predetermined time, and that changes the delay time based on the sounding tempo. By the way, the tempo to be played can be arbitrarily set by the player, and in the musical sound synthesizer, the tempo is determined by, for example, setting the time length of a quarter note as 120 clocks. At this time, in the performance data, the time of 120 clocks is called a quarter note step time.
The number of clocks is 0. At this time, the performance data is 4
If it is a time signature, one measure is composed of four step times. That is, the number of clocks for one bar is 480 clocks. The clock defines the execution timing of the process in the tone synthesizer.

As a method of changing the tempo, the oscillation frequency of the clock is changed, or the number of clocks for a note such as a quarter note is changed as described above. Is changed to "130" or "110" to change the tempo. In this case, in the tempo delay function, if the sound generation delay time is not set to the delay time corresponding to the tempo, the ratio of the delay time to the step time changes with the change of the tempo. Will be different. Therefore, in the tempo delay, by specifying the delay time in note units, that is, the step time itself, the step time is changed in accordance with the tempo change, so that the delay timing does not shift due to the tempo change. It has become.

[0004]

As described above, conventionally, since the delay time in the tempo delay mode is specified in note units, there is a problem that the delay time cannot be finely changed. Was. Further, in a tone synthesizer that sounds in the tempo delay mode from the left and right channels, since the delay times of the left and right channels are individually set, it is difficult to relatively change the delay times of the left and right channels. Further, there is a problem that the operation of changing the delay time of the left and right channels cannot be easily performed.

SUMMARY OF THE INVENTION It is a first object of the present invention to provide a musical sound synthesizer capable of making subtle changes in the setting of a delay time in a tempo delay mode. It is a second object of the present invention to provide a tone synthesizer capable of relatively changing and setting delay times of left and right channels in a tempo delay mode by a simple operation.

[0006]

In order to achieve the first object, a musical sound synthesizer according to the present invention comprises: a reference delay time designating means for designating a reference delay time in note units; and a reference delay time designating means. A ratio setting means for setting a ratio with respect to the reference delay time designated by: and a delay time determining means for determining a delay time at which the performance data is delayed and reproduced by the reference delay time and the ratio set by the ratio setting means. And delay reproduction means for delay-reproducing the performance data based on the delay time determined by the delay time determination means.

In order to achieve the second object, a musical sound synthesizer according to the present invention comprises a reference delay time designating means for designating a reference delay time in note units, and a reference delay time designated by the reference delay time designating means. Ratio setting means for setting a ratio to time, delay time determining means for determining a delay time for playing back performance data by the reference delay time and the ratio set by the ratio setting means, and delay time determining means And delay reproduction means for delay-reproducing the performance data based on the delay time determined by (1), wherein the ratio setting means includes at least a left channel ratio setting unit and a right channel ratio setting unit, and The means includes at least a left channel playback unit and a right channel playback unit, wherein the delay time of the left channel and the delay time of the right channel are equal to the ratio Based on the independently the ratio which is set the reference delay time constant means, and is determined by the delay time determination means.

According to the present invention, the delay time in the tempo delay mode is determined based on the ratio of the reference delay time in note units to the reference delay time. You will be able to make changes. Thus, for example, by setting the delay ratio of the left and right channels to be slightly shifted when performing in the tempo delay mode, the sounding timings of the left and right channels are slightly different, so that the musical expression has a spatially different feeling. Will be able to Also, by setting the ratio to the reference delay time in note units, the delay times of the left and right channels in the tempo delay mode are determined independently of each other.
For example, the delay time of the left and right channels can be relatively changed and set by a simple change operation such as changing only the reference delay time.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a functional block diagram showing a configuration example of an embodiment of a musical sound synthesizer according to the present invention. In this figure, reference numeral 1 denotes a microprocessor (CP) which executes a control program and controls performance such as tempo delay processing.
U), 2 is a read-only memory (ROM) in which a control program executed by the CPU 1 and a tempo delay processing program are stored, 3 is a work area in which registers used by the CPU 1 for processing are set, and an external storage A random access memory (RAM) in which an area for storing performance data and the like read from the device 5 or the like is set;
Is a timer for instructing the CPU 1 of the timing of the timer interrupt processing, 4-1 is an oscillator for generating a predetermined frequency signal in the timer 4, and 4-2 is a circuit for dividing the oscillation signal oscillated by the oscillator 4-1 in the timer 4. This is a frequency divider that outputs a clock which is the timing of interrupt processing. By controlling the number of frequency divisions of the frequency divider 4-2 by the CPU 1, it is possible to change the clock cycle that defines the processing timing of the CPU 1, that is, the tempo.

5 is a MIDI (musical instrument)
digital interface) An external storage device for reading performance data and the like from a recording medium and writing performance data and the like subjected to performance control processing to the recording medium. As a type of the external storage device 5, a hard disk drive (HD
D), floppy disk drive (FDD), CD
(Compact disk)-ROM drive, MO (magneto op)
tical disk) drive. Reference numeral 6 denotes a MIDI which receives performance data such as a MIDI event and outputs a MIDI event generated in the tone synthesizer.
Interface or LAN (Local Area Net)
work), the Internet, and a communication interface connected to a communication network such as a telephone line. 7
Is a keyboard for music performance that outputs performance data, and is connected to the bus 15 via the detection circuit 8, but is not always necessary. Reference numeral 9 denotes a key switch for a personal computer having keys such as alphabets, kana, numbers, and symbols, a line feed key, and a page break key, or a panel switch for setting a tone synthesis. This is a detection circuit for detecting.

A display device (monitor) 11 displays performance control parameters and the like, and may display music data and the like. Reference numeral 12 denotes a tone generator circuit to which performance data of the left and right channels subjected to tempo delay processing in the tempo delay mode to control the sound generation start timing is supplied, and generates a tone signal based on the supplied performance data. ing. Reference numeral 13 denotes an effect circuit for giving an effect such as reverb or vibrato to the tone signal passed from the tone generator circuit 12, and reference numeral 14 denotes a sound system for amplifying and emitting the tone signal to which the effect output from the effect circuit 13 is given. is there. The above configuration is equivalent to the configuration of a personal computer, a workstation, or the like, and this configuration can realize the tone synthesis device of the present invention.

Next, an outline of a tempo delay system in the tone synthesizer of the present invention will be described with reference to FIG. In the tempo delay system shown in FIG. 2, an L channel delay means 20 for giving a predetermined delay to the performance timing of the input performance data and outputting an L channel output, and a predetermined delay for the performance timing of the input performance data. And an R channel delay means 21 for outputting an R channel output, and a reference delay means 22 for giving a delay of a reference delay time ref capable of setting a delay time in note units to performance timing of performance data. .
Further, L and R channel outputs are output which are output as true performance timings without delaying the performance timing of the input performance data.

The L-channel output output from the L-channel delay means 20 is supplied to the sound source 12 and is emitted from the L-channel at a delayed performance timing. The R channel output output from the R channel delay means 21 is supplied to the sound source 12 and is emitted from the R channel at a delayed performance timing. Further, L,
The R channel output is supplied to the sound source 12 and is sounded from the L and R channels at the true performance timing. As a result, at the true performance timing of the performance data, a tone based on the performance data is generated from the L and R channels, and the performance timing of the performance data is respectively delayed by a predetermined delay time. A tone is generated based on the data. Therefore, the musical sound with the performance timing not delayed and the musical sound delayed by the predetermined time are generated from the L and R channels, and the musical sound with the delay is generated.

The reference delay time ref can be arbitrarily set by the user, and the unit of setting the delay time is a note unit. Also, L channel delay ratio information L_delay indicating a ratio with respect to the set reference delay time ref.
And R channel delay ratio information R_delay can be arbitrarily set by the user. This setting is performed by operating the switch 9 in FIG. Set L channel delay ratio information L_delay
Is the reference delay time r in the L channel delay means 20.
ef is multiplied to determine the delay time of the performance timing of the L channel. Then, the L channel delay means 20
A process of delaying the performance timing by the delay time determined in is performed on the performance data and output as an L-channel output.

The set R channel delay ratio information R_delay is multiplied by the reference delay time ref by the R channel delay means 21 to determine the delay time of the performance timing of the R channel. Then, a process of delaying the performance timing by the delay time determined by the R channel delay means 21 is performed on the performance data and output as an R channel output. The performance data is also supplied to the reference delay means 22, and a process of delaying the performance timing of the performance data by the reference delay time ref is executed by the reference delay means 22, and is output as a reference and output.
By supplying this reference output to the sound source 12, it is possible to generate a musical tone delayed in note units, but it is possible to arbitrarily select whether or not to generate a musical tone.

FIG. 3 shows a modification of the L channel delay means 20 and the R channel delay means 21. The delay means shown in FIG. 3 comprises an adder 31, a delay means 32 and a coefficient multiplier 33. Is done. The adder 31 receives the input performance data and the performance data subjected to the delay processing and the attenuation processing output from the coefficient multiplier 33. The delay means 32 includes channel delay ratio information d set by the user.
elay is multiplied by the reference delay time ref to calculate the delay time of the performance timing of the channel.
It is applied to the performance data supplied from. The delayed performance data is output as a channel output and supplied to a coefficient multiplying unit 33.

The coefficient multiplying unit 33 multiplies the velocity value of the delayed performance data by the set attenuation value to perform the attenuation process. Then, the performance data which has been subjected to the delay processing and the attenuation processing outputted from the coefficient multiplying section 33 is inputted to the adding section 31, and the performance data is inputted to the delay section 32.
Is input to Thereafter, by repeating the above-described delay processing and attenuation processing, the performance timing is repeatedly delayed, and the attenuated performance data is output as a channel output. The channel output is sent to the sound source 12 and is generated based on the performance data, so that the gradually attenuated musical tones are repeatedly generated. In this case, when the velocity value of the performance data output as the channel output is substantially zero, the sound is muted. Note that the delay means in FIGS. 2 and 3 is realized in software in FIG.

Next, FIG. 4 shows a step sequence data structure. This step sequence data is, for example, R
Stored in AM3. The step time data in the step sequence data shown in FIG. 4 is data that is set in note units and indicates the sounding timing of the subsequent performance data, and is a parameter that can be arbitrarily set by the user. For example, when the pronunciation tempo is set to a time length of a quarter note as 120 clocks and an eighth note is specified as the step time, the step time data is 60 clocks. Then, the performance data is stored following the step time data. In the performance data,
One tone is represented by a set of three data: key number data indicating a pitch, key pressing speed, that is, velocity data indicating a volume, and gate time data indicating a sound continuation time. For example, if the step sequence data is composed of data for one bar and a quarter note is set in the step time data, four data sets are stored. And
The end of the step sequence data is an end code indicating the end of the performance data.

In this step sequence data structure, the vertical axis is an address, and the musical sound synthesizer of the present invention plays the music by sequentially advancing the address and sequentially reading out the step sequence data. During a performance, first, a read pointer is set to the position of the first step time data, and data is sequentially read from the step time data. The tone generation timing is set according to the read step time data.

Next, three data, ie, key number data 1, velocity data 1, and gate time data 1, which are the data of the first note 1, are read. The key-on timing of the first note 1 is the start timing of the step time. At this key-on timing, the key number data 1 and the velocity data 1 are transmitted to the tone generator circuit 12.
And the L channel and the R channel based on the performance data of the true performance timing which is the key-on timing.
Become pronounced from the channel. At this time, if the tempo delay mode is set, the performance data of the note 1 whose key-on timing of the note 1 is delayed by the tempo delay system shown in FIG. 2 is transmitted to the tone generator circuit 12 at the delayed performance timing. Sent. Then, based on the performance data of the delayed performance timing, the delayed musical tone is generated from the L channel and the R channel. As a result, a tone played at the true performance timing and a tone delayed in performance timing are generated from the L channel and the R channel based on the performance data of the note 1.

The time when the time indicated by the gate time data 1 has elapsed since the key-on of the note 1 is set as the key-off timing. At this key-off timing, the key-off is transmitted to the sound source 12 and the sound-extinguishing process for the note 1 is performed. Note that a similar key-off process is also performed on a musical tone that is generated with a delay from the true performance timing. The gate time data is represented, for example, by the number of clocks.

Then, at the start timing of the next step time, three data of the second note 2, that is, key number data 2, velocity data 2, and gate time data 2, are read. This second note 2
Is the end timing of the first step time, that is, the start timing of the second step time. In the tempo delay mode, the second note 2 is subjected to the same tempo delay processing as that applied to the note 1. Further, each time the start timing of the next step time comes, the performance data of note 3, note 4,..., Note n is sequentially read out, and in the tempo delay mode, the same tempo delay processing as described above is performed. . When the end code is read, the address pointer is returned to the position of the key number data 1 of the note 1 shown as the first address 1st ADR in FIG. 4, and the notes 1 to n are repeatedly read. Then, in the tempo delay mode, the above-described tempo delay processing is performed and sound is generated.

By the way, in the tempo delay mode,
First, the sounding of the performance data at the true performance timing is started, and then, the sounding of the same performance data delayed by a predetermined time is started. Then, a plurality of tones are generated at the same pitch. In addition, even when the tempo delay processing is not performed, a plurality of sounds may be simultaneously generated at the same pitch. In such a case, when the sounding continuation period of the first sound ends and a key-off is sent to the sound source 12, the key-off processing is performed for all sounds that are sounded at the pitch indicated by the key-off. Since the sound is executed, the sound of the first sound is muted, and at the same time, other sounds of the same pitch, for example, the delayed sound corresponding to the first sound, are also muted.

Therefore, in the tone synthesizer of the present invention, the key-on / key-off management buffer shown in FIG. 5 is provided to prevent this drawback. The management buffer is composed of a buffer for storing the number-of-sounds data for each key number, and the storage area of the management buffer is set in the RAM 3. In the example shown in FIG. 5, there are 128 key numbers from 0 to 127, the number of sounds of key number 2 is "1", the number of sounds of key number 4 is "2", and two sounds of key number 4 are simultaneously played. It is shown that it is pronounced. Note that the number of sounds stored in the management buffer is incremented by one when the key-on timing is reached, and decremented by one when the key-off timing is reached.

Then, when the key-off timing comes, the management buffer is referred to, and the number of sounding of the key number at the key-off timing is checked. If the number of sounds exceeds “1”, only the process of decrementing the number of sounds by “1” is performed, and the key-off is performed by the sound source 12.
Not sent to If the number of sounds is "1", the number of sounds is decremented by "1", and
The key-off is transmitted to the sound source 12 to perform the silencing process. This makes it possible to prevent all the sounds from being muted even when the key-off timing of the preceding sound is reached when a plurality of sounds of the same pitch are simultaneously generated.

Next, FIG. 6 shows a flowchart of the tempo delay processing in the tempo delay mode in the tone synthesizer of the present invention. In FIG. 6, when the tempo delay process starts, an initial setting process is performed in step S10. The details of this initialization process are shown in FIG. 7 described later. In the initialization process, an address pointer is set, various registers are initialized, and the like. When the initial setting process is completed, a delay time changing process is performed in step S11. The details of the delay time change processing are shown in FIG. 8 described later. In the delay time change processing, the reference delay time ref change processing, L channel delay ratio information L_delay, and R
The process of changing the channel delay ratio information R_delay is executed.

Next, it is determined in step S12 whether or not the user has changed the tempo data. If the tempo data has been changed, the determination is YES, and in step S13 the newly input tempo data is determined. The tempo is changed based on the tempo. This tempo change processing is performed by controlling the frequency of the frequency divider 4-2 by the CPU 1 based on a tempo value input by a tempo change input operation (not shown) from the switch 9 shown in FIG. This is done by changing the number of clocks for a note. Also,
If the tempo data has not been changed, NO is determined, and the processing in step S13 is skipped.

Next, sound data processing is performed in step S14. The details of the sound data processing are shown in FIG. 8, which will be described later. Is executed. Next, a silencing process is performed in step S15. The details of the silencing data processing will be described later with reference to FIG. 10. further,
Other event data processing is performed in step S16. Here, when the user changes the volume data, for example, event data processing for setting the volume of the musical tone to be sounded to the specified volume or a step time change instruction (not shown) Step time register ST that indicates the step time according to
Processing for setting a new step time in the EP and the like are executed.

Next, in step S17, the value of the time register "time" indicating the progress time (clock number) of the true performance is incremented by "1" and the progress time (clock number) of the delayed performance of the L channel is expressed. The value of the L-channel time register L_time and the value of the R-channel time register R_time indicating the progress time (the number of clocks) of the delayed performance of the R channel are incremented by “1”. These time registers are counting the clock output from the timer 4, and are reset when the number of clocks corresponding to the step time is counted. For example, when the step time is set to 120 clocks and the value of the time register becomes “120”, the value is reset to “0”. That is, it is reset at each end timing of the step time, and the value of the time register is a time value indicating the elapsed time within the step time.

Subsequently, a performance timing reset process is performed in step S18. The details of the performance timing reset process will be described later with reference to FIG. 11. In the performance timing reset process, the time registers time,
Then, a process of resetting when the values of the L-channel time register L_time and the R-channel time register R_time have reached the number of clocks corresponding to the step time is executed. Then, it is determined in step S19 whether or not the end of the tempo delay process has been instructed. If the end has not been instructed, the process returns to step S11, and the processes in steps S11 to S19 are repeatedly performed. Such processing is repeatedly executed until the end of the tempo delay processing is instructed. When the end is instructed, the mode EXIT processing is performed in step S19, and the tempo delay mode is ended.

Next, a flowchart of the initial setting process shown in FIG. 7 will be described. In the initial setting process, the start address in the step sequence data is set in the address register ADR in step S20, and the step time data is read. Next, in step S21, the time register time is reset to "0", and a value obtained by multiplying the reference delay time ref by the L-channel delay ratio information L_delay is given a negative sign, and the L-channel time register L_ti
me, and a value obtained by multiplying the reference delay time ref by the R channel delay ratio information R_delay is given a negative sign and stored in the R channel time register R_time. The value stored in this L channel time register L_time,
The value stored in the R channel time register R_time is the delay time in the delay processing of the L channel and the R channel. Here, since the reference delay time ref is set in note units, the minimum resolution of the delay time in the L channel and R channel delay processing is, for example, L channel delay ratio information L_delay and R channel which can be set in units of percent. It is determined by the minimum resolution of the delay ratio information R_delay.

Further, an L channel time register
The value stored in the L_time and the value stored in the R channel time register R_time are each given a minus sign to indicate the delay time in the current L channel and R channel delay processing.
L_past and R channel current time register R_past are stored respectively. Further, the step time read in step S20 is stored in the step time register.
Stored in step. Next, in step S22, the address value of the address register ADR is incremented by one. Then, the address value incremented in step S23 is stored in the first address register 1stADR, and the first address register 1stA
The value of DR is the L channel address register L_ADR and R
Stored in the channel address register R_ADR. When the above processing is executed, the initial setting processing ends. In the initial setting processing, initial setting processing of various address registers and initial setting processing of various time registers for performing tempo delay processing are performed.

Next, a flowchart of the delay time changing process shown in FIG. 8 will be described. The delay time change process is a process executed subsequent to the initial setting process as described above,
In step S30, it is determined whether new data has been input as the reference delay time ref. Here, if the user has input new reference delay time ref data in note units, the determination is YES, and the process proceeds to step S31.
In step S31, the newly input reference delay time r
An operation of multiplying the ef data by the L-channel delay ratio information L_delay is performed, and the value of the L-channel current time register L_past is subtracted from the multiplication result. The result of the subtraction is a new L based on the new reference delay time ref data.
The difference between the channel delay time and the current L channel delay time is stored in the L channel difference register L_dif. Similarly, for the R channel, R channel delay ratio information R_delay is added to the newly input reference delay time ref.
Is performed, and the value of the R channel current time register R_past is subtracted from the result of the multiplication. This subtraction result is used as an R channel difference register R_di as a difference time between the new R channel delay time based on the new reference delay time ref data and the current R channel delay time.
Stored in f.

Then, in step S32, the value of the L channel difference register L_dif is subtracted from the value of the L channel time register L_time, and the result of the subtraction is stored in the L channel time register L_time. Similarly, for the R channel, the value of the R channel time register R_time
The value of the channel difference register R_dif is subtracted, and the result of the subtraction is stored in the R channel time register R_time. As a result, the values of the L channel time register L_time and the R channel time register R_time are changed based on the delay time after the change processing when a new reference delay time ref is input.

Next, in step S33, an operation of multiplying the newly input reference delay time ref data by the L-channel delay ratio information L_delay is performed, and the multiplication result is stored in the L-channel current time register L_past.
Similarly, for the R channel, an operation of multiplying the newly input reference delay time ref data by the R channel delay ratio information R_delay is performed, and the multiplication result is stored in the R channel current time register R_past. As a result, the delay time in the current delay processing after the change processing when new reference delay time ref data is input is stored in the L channel current time register L_past and the R channel current time register R_past. Next, the process proceeds to step S34. Thus, by changing the reference delay time ref data, the delay time of the L channel and the R channel can be relatively changed.

If no new reference delay time ref data is input, the process proceeds from step S31 to step S31.
33 is skipped and the process proceeds to step S34. In step S34, it is determined whether the L-channel delay ratio information L_delay has been changed. Here, if the user has input the L-channel delay ratio information L_delay that can be set in a new percentage unit, the determination is YES, and the process proceeds to step S35. In step S35, an operation of multiplying the newly input L-channel delay ratio information L_delay by the reference delay time ref data is performed, and the value of the L-channel current time register L_past is subtracted from the multiplication result. This subtraction result is a difference time between the new L-channel delay time based on the new L-channel delay ratio information L_delay and the current L-channel delay time.
It is stored in the L channel difference register L_dif.

Then, in step S36, the value of the L channel difference register L_dif is subtracted from the value of the L channel time register L_time, and the result of the subtraction is stored in the L channel time register L_time. As a result, the value of the L-channel time register L_time is changed based on the delay time after the change processing when the new L-channel delay ratio information L_delay is input. Then
In step S37, an operation of multiplying the newly input L-channel delay ratio information L_delay by the reference delay time ref data is performed, and the multiplication result is stored in the L-channel current time register L_past. Thereby, a new L
The delay time in the current tempo delay processing after the change processing when the channel delay ratio information L_delay is input is stored in the L channel current time register L_past. Next, the process proceeds to step S38.

The new L channel delay ratio information L_
If the delay reference delay time ref data is not input, steps S35 to S37 are skipped and the process proceeds to step S38. In step S38, it is determined whether the R channel delay ratio information R_delay has been changed. Here, the R channel delay ratio information that can be set by the user in a new percentage unit R_delay
Is input, YES is determined, and step S39 is determined.
Proceed to. In step S39, an operation of multiplying the newly input R channel delay ratio information R_delay by the reference delay time ref data is performed, and the value of the R channel current time register R_past is subtracted from the multiplication result. This subtraction result is used as new R channel delay ratio information R_delay
Is stored in the R-channel difference register R_dif as a difference time between the new R-channel delay time based on the R and the current R-channel delay time.

Then, in step S40, the value of the R channel difference register R_dif is subtracted from the value of the R channel time register R_time, and the subtraction result is stored in the R channel time register R_time. As a result, the value of the R channel time register R_time is changed based on the delay time after the change processing when new R channel delay ratio information R_delay is input. Then
In step S41, an operation of multiplying the newly input R channel delay ratio information R_delay by the reference delay time ref is performed, and the multiplication result is stored in the R channel current time register R_past. As a result, the delay time in the current delay processing after the change processing when new R channel delay ratio information R_delay is input is stored in the R channel current time register R_past. Thus, the delay time end processing ends. If new R channel delay ratio information R_delay is not input,
Steps S39 to S41 are skipped, and the delay time end processing ends.

Next, a flow chart of the sound data processing shown in FIG. 9 will be described. When the pronunciation data processing starts,
In step S45, it is determined whether the value of the time register time is "0". Immediately after the start of the tempo delay process, the value of the time register time is reset to “0” by the initial setting process, and thus the determination is YES and the process proceeds to step S46. In step S46, the key number data and velocity data are read out based on the address of the address register ADR, and transmitted to the sound source 12 together with the key-on data. In this case, since the address of the key number 1 is set in the address register ADR immediately after the start of the tempo delay processing, the key number data 1 and the velocity data 1 of the note 1 shown in FIG. Sent. Then, the musical sound of the note 1 is synthesized by the sound source 12 based on these event data, and after the effect is given by the effect circuit 13, the true sound is not delayed from the L and R channels of the sound system 14. It will be pronounced at the performance timing.

Next, the key number data (in this case, key number data 1) read in step S47 is stored in the key register key, and the read gate time data (in this case, gate time data 1) is stored. )
Is stored in the gate time register Gate, and the value of the address register ADR is incremented by “3”. The value of the address register ADR is incremented by "3" in order to move the address pointer to the head of the event data of the next note. Next, it is determined whether or not the data indicated by the address of the address register ADR incremented in step S48 is end data. In this case, since it is immediately after the start of the tempo delay process, the determination is NO, and the process branches to step S50. If the tempo delay processing proceeds and the data indicated by the address of the address register ADR becomes end data, the process proceeds to step S
Proceeding to 49, the value of the address register ADR is set to the value stored in the first address register 1st ADR. As a result, the sequence data shown in FIG. 4 is repeatedly read out and sound is emitted from the L and R channels.

In step S50, it is determined whether the value of the L channel time register L_time is "0". Immediately after the start of tempo delay processing, L
Since the delay time data of the performance timing of the L channel is set as negative data in the channel time register L_time, the determination is NO, and the process branches to step S55. Each time the tempo delay process is repeatedly executed, the value of the L channel time register L_time is incremented in step S17. When the value is incremented until the value of the L channel time register L_time becomes “0”, “YES” is determined in the step S50, and the process proceeds to a step S51. In step S51,
The key number data and velocity data are read out based on the L-channel address register L_ADR, and transmitted to the sound source 12 together with the key-on data.

The L channel time register L_time
First becomes “0”, the first address register 1st is stored in the L channel address register L_ADR.
Since the value of ADR is set in the initial setting process, FIG.
Is read out and transmitted to the sound source 12. Then, note 1 is generated in sound source 12 based on these event data.
Are synthesized and the effect is given by the effect circuit 13, and then the sound is generated from the L channel of the sound system 14. As a result, the sound of note 1 whose performance timing is delayed based on the result of multiplication of the reference delay time ref data and the L channel delay ratio information L_delay is generated from the L channel.

Next, the key number data (key number data 1 in this case) read in step S52 is stored in the L channel key register L_key,
The read gate time data (gate time data 1 in this case) is stored in the L-channel gate time register L_
Stored in Gate, L channel address register L_ADR
Is incremented by “3”. The value of the L-channel address register L_ADR is incremented by "3" in order to move the L-channel address pointer to the head of the event data of the next note. Next, it is determined whether or not the data indicated by the address of the L-channel address register L_ADR incremented in step S53 is end data. In this case, since it is immediately after the start of the tempo delay processing, it is determined to be NO, and step S5 is performed.
Branch to 5.

If the tempo delay process proceeds and the data indicated by the address of the L channel address register L_ADR becomes end data, the process proceeds to step S54 where the value of the L channel address register L_ADR is stored in the first address register 1st ADR. Set to the value stored. As a result, the sequence data shown in FIG. 4 is repeatedly read, and sound is generated from the L channel.

In step S55, it is determined whether the value of the R channel time register R_time is "0". Immediately after the start of tempo delay processing, R
Since the delay time data of the performance timing of the R channel is set as negative data in the channel time register R_time, it is determined to be NO and the sounding data processing ends. Each time the tempo delay process is repeatedly executed, the value of the R channel time register R_time is incremented in step S17. When the value is incremented until the value of the R channel time register R_time becomes “0”, “YES” is determined in the step S55, and the process proceeds to a step S56. In step S56,
The key number data and velocity data are read out based on the R channel address register R_ADR, and transmitted to the sound source 12 together with the key-on data.

The R channel time register R_time
First becomes “0”, the first address register 1st is stored in the R channel address register R_ADR.
Since the value of ADR is set in the initial setting process, FIG.
Is read out and transmitted to the sound source 12. Then, note 1 is generated in sound source 12 based on these event data.
Are synthesized and the effect is given by the effect circuit 13, and then the tone is generated from the R channel of the sound system 14. As a result, the sound of note 1 whose performance timing is delayed based on the result of multiplication of the reference delay time ref data and the R channel delay ratio information R_delay is generated from the R channel.

Next, the key number data (key number data 1 in this case) read in step S57 is stored in the R channel key register R_key, and
The read gate time data (gate time data 1 in this case) is stored in the R channel gate time register R_
Stored in Gate, R channel address register R_ADR
Is incremented by “3”. The value of the R channel address register R_ADR is incremented by "3" in order to move the R channel address pointer to the head of the event data of the next note. Next, it is determined whether or not the data indicated by the address of the R channel address register R_ADR incremented in step S58 is end data. In this case, since it is immediately after the start of the tempo delay processing, it is determined as NO, and the sound data processing ends.

When the tempo delay process proceeds and the data indicated by the address of the R channel address register R_ADR becomes end data, the process proceeds to step S59 and the value of the R channel address register R_ADR is stored in the first address register 1st ADR. Set to the value stored. As a result, the sequence data shown in FIG. 4 is repeatedly read, and sound is generated from the R channel.

Next, a flow chart of the muffling data processing shown in FIG. 10 will be described. In the silencing data processing, step S
At 60, it is determined whether the value of the time register time is equal to the value of the gate time register Gate. Immediately after the start of the tempo delay processing, the value of the time register time has been reset to “0” by the initial setting processing, so that the determination is NO and the process branches to step S62.

Each time the tempo delay process is repeatedly executed, the value of the time register time is incremented in step S17. And time register time
Is set in the gate time register Gate when processing sound data.
Is incremented until it becomes equal to the gate time data 1 stored in step S60, it means that the sounding continuation time of the note 1 has increased.
It is determined as ES and the process proceeds to step S61. Step S6
In step S62, a key-off for the pitch indicated by the key number data 1 of the note 1 stored in the key register key is transmitted to the sound source 12 at the time of the sounding data processing.
Proceed to. As a result, the sounds of the L and R channels of the note 1 that are generated at the true performance timing are muted.

In the tempo delay mode, however, the sound generated by the same performance data whose performance timing has been delayed is sounded after being delayed from the L channel and the R channel. The sound that has been played will also be muted. Therefore, in step S61, the management buffer shown in FIG. 5 is referred to, and the number of sounds of the key number at the key-off timing is checked. When the number of sounds exceeds "1", only the process of decrementing the number of sounds by "1" is performed, and the key-off is not transmitted to the sound source 12. If the number of sounds is "1", the number of sounds is decremented by "1", and a key-off is transmitted to the sound source 12 to perform the mute processing. As a result, it is possible to prevent all sounds from being muted even when the key-off timing of the preceding sound is reached when a plurality of sounds of the same pitch are simultaneously generated by performing tempo delay processing. Become.

In step S62, the value of the L channel time register L_time is set to the L channel time register L_G.
It is determined whether it is equal to the value of ate. Immediately after the start of the tempo delay process, since the delay time data indicating the performance timing of the L channel is set as negative data in the L channel time register L_time by the initial setting process, it is determined to be NO and the process branches to step S64. I do.

Each time the tempo delay process is repeatedly executed, the value of the L channel time register L_time is incremented in step S17. When the value of the L-channel time register L_time is incremented until the value of the L-time register L_time becomes equal to the gate time data 1 stored in the L-channel gate time register L_Gate during the processing of the sound data, the sound continuation time of the note 1 in the L channel is timed. Since it has been raised, YES is determined in the step S62, and the process proceeds to the step S63.
In step S63, the key-off for the pitch indicated by the key number data 1 of the note 1 stored in the L channel key register L_key is performed at the time of the sound generation data processing.
And the process proceeds to step S64. As a result, the sound of the L channel of the note 1 which is sounded with the performance timing delayed is muted.

However, if a key-off is transmitted to the sound source 12 in step S63 when a plurality of sounds at the same pitch are generated from the L channel, all sounds at the same pitch will be muted. Therefore, in step S63, as described above, the number of sounded key numbers at the key-off timing in the L channel is checked with reference to the management buffer shown in FIG. When the number of sounds exceeds "1", only the process of decrementing the number of sounds by "1" is performed, and the key-off is not transmitted to the sound source 12. If the number of sounds is set to "1", the number of sounds is decremented by "1" and a key-off is transmitted to the sound source 12 to perform mute data processing. This makes it possible to prevent all the same pitch sounds from being muted in the L channel even when the key-off timing of the preceding sound is reached when a plurality of the same pitch sounds are generated simultaneously. .

In step S64, it is determined whether the value of the R channel time register R_time is equal to the value of the R channel time register R_Gate. Immediately after the start of the tempo delay processing, since the delay time data indicating the performance timing of the R channel is set as negative data in the R channel time register R_time by the initial setting processing, it is determined as NO and the mute processing ends. I do.

Each time the tempo delay process is repeatedly executed, the value of the R channel time register R_time is incremented in step S17. When the value of the R-channel time register R_time is incremented until the value of the R-time register R_time becomes equal to the gate time data 1 stored in the R-channel gate time register R_Gate during the sound data processing, the sound continuation time of the note 1 in the R channel is timed. Since it has been raised, YES is determined in the step S64, and the process proceeds to the step S65.
In step S65, the key-off for the pitch indicated by the key number data 1 of the note 1 stored in the R channel key register R_key during the sounding data processing is performed by the sound source 12
And the mute data processing ends. This allows
R of note 1 sounding with delayed performance timing
The channel sound is muted.

However, when a plurality of tones at the same pitch are produced from the R channel, the key buffer is turned off in the R channel in step S65 by referring to the management buffer shown in FIG. 5 as in the case of the L channel. Check the number of key numbers sounded at the timing. When the number of sounds exceeds "1", only the process of decrementing the number of sounds by "1" is performed, and the key-off is not transmitted to the sound source 12. If the number of sounds is set to "1", the number of sounds is decremented by "1" and a key-off is transmitted to the sound source 12 to perform mute data processing. This makes it possible to prevent all the same pitch sounds from being muted in the R channel even when the key-off timing of the preceding sound is reached when a plurality of the same pitch sounds are generated simultaneously. .

Next, a description will be given of a flowchart of the performance timing reset processing shown in FIG. 11 for preparing for the sound generation by the performance data of the next note when the step time has elapsed. When the performance timing reset process is started, the time register time
Is determined to be equal to the value of the step time register step. Immediately after the start of the tempo delay processing, since the value of the step time register time has been reset to “0” by the initial setting processing, it is determined to be NO and the process branches to step S72.

Each time the tempo delay processing is repeatedly executed, the value of the time register time is incremented in step S17. And time register time
Is set in the step time register st when processing the sound data.
When the time is incremented until it becomes equal to the step time data stored in ep, the step time of the note 1 has elapsed, so that it is determined to be YES in step S70 and the process proceeds to step S71. In step S71, the step time register step is reset to "0", and the process proceeds to step S72. Thus, the tone generation start timing of the true performance timing of the next note 2 is set.

Next, in step S72, the value of the L channel time register L_time is set in the step time register s.
It is determined whether it is equal to the value of tep. Immediately after the start of the tempo delay process, the value of the L-channel step time register L_time is determined as NO by the initial setting process because the delay time data indicating the performance timing of the L channel is set as negative data, and thus the determination is NO and step S74 is performed. Branch to

Each time the tempo delay process is repeatedly executed, the value of the L channel time register L_time is incremented in step S17. When the value of the L-channel time register L_time is incremented until the value of the L-time becomes equal to the step time data stored in the step time register step at the time of sound data processing, the step time of the delayed note 1 in the L channel is increased. Therefore, YES is determined in the step S72, and the process proceeds to the step S73.
In step S73, the L channel time register L_ti
me is reset to “0” and the process proceeds to step S74. This is the sounding start timing of the delayed performance timing of the next note 2.

Next, in step S74, the value of the R channel time register R_time is set in the step time register s.
It is determined whether it is equal to the value of tep. Immediately after the start of the tempo delay processing, the value of the R channel step time register R_time is set to negative by the initial setting processing, so that the delay time data indicating the performance timing of the R channel is set as negative data. The reset processing ends.

Each time the tempo delay processing is repeatedly executed, the value of the R channel time register R_time is incremented in step S17. When the value of the R channel time register R_time is incremented until it becomes equal to the step time data stored in the step time register step at the time of sound data processing, the step time of the delayed note 1 in the R channel is increased. Therefore, YES is determined in the step S74, and the process proceeds to the step S75.
In step S75, the R channel time register R_ti
me is reset to “0”, and the performance timing reset processing ends. This is the sounding start timing of the delayed performance timing of the next note 2.

Each of the above-described processes corresponds to step S1 shown in FIG.
Steps S11 to S19 shown in FIG. 6 until it is determined in Step 9 that the tempo delay mode has ended.
The tempo delay process is sequentially performed on each note of the step sequence data shown in FIG. When the end code is read from the step sequence data, the address pointer is returned to the first address position of the step sequence data, and the same performance is repeatedly performed. Such a performance is performed cyclically until the tempo delay mode ends,
When the end is instructed, the mode EXIT processing is performed in step S19, and the tempo delay mode is ended.

In the above description, the step time and the gate time are stored as the performance data. However, the timing may be stored for each event. The tempo delay processing may be executed by obtaining the step time and the gate time. In the above description, the tone synthesizer has left and right (L, R) channels, but may be a monaural (one channel) tone synthesizer. Further, the step sequence data is composed of, for example, one measure of performance data, and the step time is set to the length of a quarter note. However, the present invention is not limited to this, and the step sequence data is composed of a plurality of measures of performance data. Alternatively, the step time may be represented by the time length of another note.

Note that the present invention is not limited to the form of the musical sound synthesizer, but may be a form of a personal computer on which application software operates. At this time, application software stored in a storage medium such as a magnetic disk, an optical disk, or a semiconductor memory may be supplied to a personal computer, or application software may be supplied via a network. Further, the musical sound generated by the musical sound synthesizer of the present invention is not limited to a keyboard instrument, but may be a stringed instrument type, a wind instrument type, a percussion instrument type, or the like. Further, the musical sound synthesizer of the present invention is not limited to a structure in which a sound source device, an automatic performance device, and the like are incorporated, but is a separate device.
Or by using communication means such as a network or various networks. In this case, the tone synthesizer may be an automatic performance piano.

The format of the performance data in the musical sound synthesizer of the present invention is represented by “event + relative time” in which the time of occurrence of a performance event is represented by the time from the immediately preceding event.
"Event + Absolute time", which represents the occurrence time of a performance event in absolute time within a song or bar, "Pitch (rest)," which represents performance data in terms of note pitch and note length or rest and rest length Any format such as "+ note length", a memory area for each minimum resolution of performance, and a "solid method" in which performance events are stored in a memory area corresponding to the time when the performance event occurs. Also, as a method of changing the tempo of the automatic performance, a method of changing the cycle of the tempo clock,
Any method may be used, such as modifying the value of the timing data while keeping the cycle of the tempo clock as it is, or modifying the value for counting the timing data in one process. Further, the automatic performance data may have a format in which data of a plurality of channels are mixed, or may have a format in which data of each channel is divided for each track.

An HDD (hard disk drive), which is a type of the external storage device 5, is a storage device for storing control programs and various data. When the control program is not stored in the ROM 2, the control program is stored in a hard disk in the HDD, and is read into the RAM 3, thereby performing the same operation as in the case where the control program is stored in the ROM 2. You may make it CPU1 perform it. By doing so, it becomes possible to easily add a control program, upgrade a version, and the like. A CD-ROM (compact disk-read only memory) drive, which is another type of the external storage device 5, is a device that reads out control programs and various data stored in the CD-ROM. The read control program and various data are stored in H
Stored on the hard disk in the DD. Therefore,
If a CD-ROM is used, new installation and version upgrade of the control program can be easily performed. In addition to this CD-ROM drive,
As the external storage device 5, various types of media such as a floppy disk device and a magneto-optical disk (MO) device can be used.

Further, if the interface 6 is a communication interface, the tone synthesizing apparatus of the present invention is connected to a LAN.
It can be connected to a communication network such as (local area network), the Internet, or a telephone line, and can be connected to a server computer via the communication network. Therefore, when the control program and various data are not stored in the hard disk device, the program and data can be downloaded from the server computer. At this time, the musical sound synthesizer of the present invention serving as a client transmits a command for requesting download of a program or data to a server computer via a communication interface and a communication network. Upon receiving this command, the server computer distributes the requested program or data to the musical sound synthesizer of the present invention via the communication network. The musical sound synthesizer of the present invention downloads programs and data by receiving programs and data distributed from a server computer via a communication interface and storing them in an external storage device 5 such as a hard disk device. Can be.

[0071]

As described above, according to the present invention, the delay time in the tempo delay mode can be determined by the ratio of the note unit to the reference delay time. Therefore, by changing the ratio that can be set in percentage units, it is possible to make subtle changes in the setting of the delay time. This allows, for example,
By setting the delay ratio of the left and right channels to be slightly shifted while performing in the tempo delay mode, the sounding timings of the left and right channels are slightly different, so that a musical sound expression with a sense of spatial variation can be achieved. In addition, since the delay time of the left and right channels in the tempo delay mode is determined independently by setting the ratio to the reference delay time in note units, for example, it is easy to change only the reference delay time. With a simple change operation, the delay time can be relatively changed and set.

[Brief description of the drawings]

FIG. 1 is a functional block diagram illustrating a configuration example of an embodiment of a musical sound synthesizer according to the present invention.

FIG. 2 is a diagram showing an outline of a delay system of a tempo delay in the musical sound synthesizer of the present invention.

FIG. 3 is a diagram showing a modification of the delay means of the delay system of the tempo delay in the musical sound synthesizer of the present invention.

FIG. 4 is a diagram showing a configuration of step sequence data in the musical sound synthesizer of the present invention.

FIG. 5 is a diagram showing a configuration of a key-on / key-off management buffer in the musical sound synthesizer of the present invention.

FIG. 6 is a diagram showing a flowchart of tempo delay processing in the musical sound synthesizer of the present invention.

FIG. 7 is a diagram showing a flowchart of an initial setting process during a tempo delay process in the musical sound synthesizer of the present invention.

FIG. 8 is a view showing a flowchart of a delay time changing process during a tempo delay process in the musical sound synthesizer of the present invention.

FIG. 9 is a diagram showing a flowchart of sounding data processing during tempo delay processing in the musical sound synthesizer of the present invention.

FIG. 10 is a diagram showing a flowchart of mute data processing during tempo delay processing in the musical sound synthesizer of the present invention.

FIG. 11 is a diagram showing a flowchart of performance timing reset processing during tempo delay processing in the musical sound synthesizer of the present invention.

[Explanation of symbols]

1 CPU, 2 ROM, 3 RAM, 4 timer, 4
-1 oscillator, 4-2 divider, 5 external storage device, 6
Interface, 7 keyboard, 8 detection circuit, 9 switch, 10 detection circuit, 11 display circuit, 12 sound source circuit, 13 effect circuit, 14 sound system, 15
Bus, 20 L channel delay means, 21 R channel delay means, 22 reference delay means, 31 adder, 32
Delay means section, 33 coefficient multiplication section

Claims (2)

[Claims] 1. Reference delay time designating means for designating a reference delay time in note units; ratio setting means for setting a ratio to the reference delay time designated by the reference delay time designating means; Delay time determining means for determining a delay time to be set by the reference delay time and the ratio set by the ratio setting means; and a delay for delaying and reproducing the performance data based on the delay time determined by the delay time determining means. A tone synthesizer comprising: a reproducing unit. 2. A reference delay time designating means for designating a reference delay time on a musical note basis, a ratio setting means for setting a ratio with respect to the reference delay time designated by the reference delay time designating means, and the performance data is delayed and reproduced. Delay time determining means for determining a delay time to be set by the reference delay time and the ratio set by the ratio setting means; and a delay for delaying and reproducing the performance data based on the delay time determined by the delay time determining means. Playback means, wherein the ratio setting means includes at least a left channel rate setting section and a right channel rate setting section, and the delay playback means includes at least a left channel playback section and a right channel playback section. , The delay time of the left channel and the delay time of the right channel are independently set by the ratio setting means and the reference delay. Based on the time and musical tone synthesizing apparatus characterized by being determined by the delay time determination means.