JP2738359B2 - Rhythm sound generator and its sound control method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] BACKGROUND OF THE INVENTION The present invention relates to a plurality of different tone colors.
Kind ofRhythm instrument soundCan pronounceRhythm sound emission
Raw device and its sound control methodAbout. [0002] 2. Description of the Related Art A plurality of tone signals having different timbres are simultaneously generated.
Automatic rhythm playing devices that can be generated are known. This species
As an example of an automatic rhythm playing device,
Japanese Patent Application Laid-Open No. 54-16424 discloses a sound source of the required number of tones.
Circuit, and by appropriately switching this tone generator circuit
A device capable of generating a plurality of musical tones with different tones
Is disclosed. [0003] However, as described above,
Conventional automatic rhythm playing equipment supports different tones
It is necessary to provide multiple tone generator circuits, and the circuit configuration is complicated
Could not be avoided. Therefore, a plurality of circuits can be used without complicating the circuit configuration.
To be able to pronounce the tone, for example,
As disclosed in US Pat.
Multiple sound source circuits to switch the filter characteristics
To generate multiple musical tones with different tones
It is possible to adopt a configuration. However, such a filter characteristic is
Various types of musical tones can be used
Could not be changed. The present invention has been made in view of the above circumstances.
That have different tonesRhythm instrument soundEasy
And can be generated in any configurationrhythm
Musical instrument soundCan be variously controlledRhythm sound generator
And its pronunciation control methodThe purpose is to provide. [0007] Means for Solving the Problems The invention according to claim 1
Is a multiple m waveform corresponding to multiple rhythm instrument sounds
Each having a waveform memory for storing data,
Any of the plurality m of waveform data stored in the memory
Based on the waveform data of
Rhythm composed of several n (n <m) musical tone generating channels
Instrument sound generating means;The plurality of n tone generation channels
For controlling the generation of musical tones for one ofFirst
Generated from the control data and the multiple m waveform data
Indicates the waveform data corresponding to the rhythm instrument sound to be performed
Which generates the second control data as one set of data.
Data generating means and the first control in the set data
Based on the data, the plurality of n musical tone generation channels
From the channel to the tone generation channel to be sounded.
Channel sounding instructing means for instructing sound, and
Based on the second control data in the plurality m
Corresponds to the rhythm instrument sound to be generated from the waveform data
Waveform data indicating means for indicating the obtained waveform data;
When pair data is generated, the channel sounding indicator
Each tone generation channel indicated by the step is
The waveform data specified by the waveform data specifying means.
Start reading data from the waveform memory.
Characterized in that each of the rhythm instrument sounds is pronounced.
You. The invention described in claim 2 is the same as the invention described in claim 1.
In the rhythm sound generating device, the rhythm instrument sound generating means
The waveform memory of the present invention stores more than the number of rhythm instrument sounds.
Stores several meters of waveform data, and
Multiple waveforms corresponding to different instrument sounds and having similar waveforms to each other
It is characterized in that data is stored as one set. Ma
The invention according to claim 3 provides the rhythm according to claim 1.
In the sound generator, when the set data is generated,
Each musical tone instructed by the channel tone instructing means
The sound generation channel is set by the waveform data indicating means.
Of the waveform data specified by the
By starting reading in a time-sharing manner,
It is characterized in that each of the instrument sounds is produced in a time-division manner. Also,
According to a fourth aspect of the present invention, the waveform of a plurality of rhythm
Waveform memory for storing a plurality of m
Each having the plurality of m stored in the waveform memory.
The rhythm based on arbitrary waveform data among the waveform data
A chord for generating a plurality of n (n <m) musical tones capable of producing musical instrument sounds
Rhythm musical instrument sound generating means comprising
Start reading each of the plurality of m waveform data in
Address, the read start address and the next read start.
Each range address that is the address difference from the start address
And an address memory for storingGenerating a plurality of n musical tones
For one of the channels
ForFirst control data and a plurality of m waveform data
Waveform data corresponding to the rhythm instrument sound to be generated from the
The second control data instructing the data is one set of data.
Data generating means for generating the data
The plurality of n musical tones are based on the first control data.
The tone generation channel to be sounded from the generation channel
Channel sounding instructing means for instructing the channel to sound, and
Based on the second control data in the notation data,
Of the read start address of the plurality of m waveform data
Waveform data indicating the relevant read start address from inside
Instruction means; and when the set data is generated, the channel
For generating each tone specified by the sound generation instruction means
The channel is designated by the waveform data designating means.
The waveform data read from the waveform memory
Start reading from the start address.
Ends reading when it matches the range address
This means that each rhythm instrument sound is pronounced.
Sign. The invention described in claim 5 isMultiple n easy
Music tone can be generated for one of the sound generation channels
To controlFirst control data and multiple m waveforms
Corresponding to the rhythm instrument sound to be generated from the data
The second control data indicating the waveform data is one set of data.
Data generation process that occurs as data,
Arbitrary waveform data based on the first control data in
N (n
<M) to be generated from the tone generation channels
Channel pronunciation finger to instruct the tone generation channel
Indicating step and the second control data in the set data
Should be generated from the plurality of m waveform data based on
A waveform indicating waveform data corresponding to the rhythm instrument sound
Shape data indicating step, and when the set data is generated,
Multiple m waveform data corresponding to multiple rhythm instrument sound waveforms
From the waveform memory that stores the data
Start reading the waveform data specified in step
By doing so, in the channel sounding instruction process
The specified rhythm instrument from each designated tone generation channel
Having a rhythm instrument sounding process that produces each sound
It is characterized by. In addition, the invention described in claim 6 is an embodiment of the invention.
5. The method for controlling a sound of a rhythm sound generator according to item 5,
In the rhythm instrument sounding process, the set data is
When generated, it supports multiple rhythm instrument sound waveforms.
From the waveform memory for storing a plurality m of waveform data,
The waveform data designated in the waveform data designation step.
Data reading is started in a time-sharing manner,
Each tone generated in the channel sounding instruction process
Rhythm instrument sound is generated in time division
It is characterized by being performed. [0008] The invention according to claim 1According to the data generator
A set of first and second control data according to the stage
Is generated, the channel sounding instructing means outputs the first control.
Based on the control data,
Instructs the tone generation channel to be sounded from within
On the other hand, the waveform data indicating means transmits the second control data
Rhythm to be generated from multiple waveform data based on
Specify the waveform data corresponding to the instrument sound. This allows
Each tone generation sounded by the channel sounding means
The raw channel is indicated by the waveform data indicating means.
Read out the read waveform data from the waveform memory.
By starting, each rhythm instrument sound is generated.
According to the fourth aspect of the present invention, data generating means
When the set data is generated by the
Is based on the second control data.
From the read start address, the read start address
Instructions. As a result, the channel sounding instruction means
Each tone generation channel that is instructed by the
Of the waveform data specified by the data specifying means.
Start reading from the read start address of the shape memory
Read when the read count matches the range address.
By ending the output, each rhythm instrument sound is emitted.
Sound. [0009] Embodiments of the present invention will be described below in detail with reference to the drawings.
explain. FIG. 1 shows that the present invention is applied to an automatic rhythm playing device.
FIG. 2 is a block diagram illustrating a schematic configuration of an embodiment used. this
In the figure, a rhythm pattern memory 1 stores selectable rhythms.
(E.g., waltz, swing, rumba, jazz, rock
Rhythm instruments (eg, cymbals, bass)
Driving data for musical instruments such as drums, hi-conga, maracas, etc.)
(Drive data for each sound source), and drive data for each instrument.
The instrument sounds played based on the
A memory in which control data for selecting from sounds is stored.
This is a do-on memory (ROM). That is, the rhythm pattern memory 1
Sets the rhythm instrument type to 16 and plays it.
Select the desired instrument sound from four types of instrument sounds for each instrument.
If it is to be selected, 16 bits shall be one word and
Musical instruments whose bits correspond one-to-one with each of the rhythm instruments
Separate drive data RD is stored for each rhythm in the order of rhythm progress.
And the 16-bit instrument-specific drive data R
32 bits for each instrument, 2 bits for each instrument
Control data CD is additionally stored in each case. these
The set data of the musical instrument-specific drive data RD and the control data CD
The format is as shown in FIG. That is, in this case,
Each bit of the musical instrument-specific drive data RD is, for example, a bit a1
Is cymbal, bit a2 is bass drum, bit a3 is high
Conga, ..., bit a16 corresponds like maracas,
Each bit of the control data CD is, for example, bits b1, b2
Is a cymbal, bits b3 and b4 are bass drums, bit b
5, b6 is hikonga, ..., bits b31 and b32 are mala
Corresponds like a scum. Also, in this case,
Only when each bit of the moving data RD is in the “1” state,
Playback of musical instruments
Each two bits of the data CD are treated as a code signal,
One instrument sound is selected from among various instrument sounds.
ing. Next, the rhythm selection switch 2 is set to
Switch to select the desired rhythm
And is provided on the operation panel of this electronic musical instrument.
You. From this rhythm selection switch 2, the selected rhythm
A signal RS (code signal) indicating the system is output. Again
No. 3 is the rhythm tempo adjustment provided on the operation panel
Slide-type controls for generating tempo control data
Device 4 is a variable resistor (not shown) interlocked with the operator 3.
It corresponds to the slide position of the operation element 3 according to the resistance value.
Outputs rhythm control data TMP indicating rhythm tempo
You. The rhythm pattern reading circuit 5 receives the signal R
S and an address generated based on the data TMP
The signal A1 is sent to the address terminal of the rhythm pattern memory 1.
The rhythm selection switch is supplied from the memory 1 to the slave AD.
Driving data for each instrument corresponding to the rhythm selected by
Data of the data RD and the control data CD are sequentially read
You. That is, the rhythm pattern reading circuit 5 outputs the signal R
The address signal A1 is converted to a rhythm pattern
Driving by instrument corresponding to the selected rhythm in Mori 1
Designates storage areas for data RD and control data CD
And the address signal A1 is
It is sequentially changed at the rhythm tempo indicated by the TMP.
The drive data RD for each instrument and the control data
Data CDs are sequentially read. This rhythm pattern memory 1
The driving data RD read out from the instrument is read from the rhythm sound source circuit.
The control data CD is supplied to a memory selection signal
It is supplied to the creature 7. The rhythm sound source circuit 6 is used for playing the rhythm instruments.
It has a waveform memory that stores four types of instrument sound signals
From this waveform memory, the driving data for each musical instrument is obtained.
Musical instrument sound signal corresponding to the instrument indicated by the “1” bit of RD
Are read out in a time-sharing manner. And this place
In this case, the memory selection signal generator 7
Or a lander generated by the memory selection signal generator 7 itself.
A memory selection signal MS is output based on the
To the rhythm sound source circuit 6, and thereby the rhythm sound source circuit
6 is a musical instrument sound signal to be read from the waveform memory
Each time there is a choice of four types.
ing. From the waveform memory of this rhythm sound source circuit 6
The instrumental sound signals read out separately are synthesized and then
8 where it is amplified and supplied to the speaker 9
It is pronounced as a rhythm sound. Next, the rhythm sound source circuit 6 in FIG.
The detailed configuration of the memory selection signal generator 7 is shown in FIG.
This will be described with reference to the drawings. First, the waveform memory (music signal memo
D) The description will start from 10. This waveform memory 10 contains FIG.
Cymbal, bass drum, hi-conga, as shown in ...
…, The musical sounds of 16 types of maracas rhythm instruments
4 types of PCM code are stored for each device.
Have been. In this case, take the cymbal instrument sound as an example
Cymbal # 1, cymbal # 2, cymbal # 3, cymbal
Bar # 4 has instrument sounds with slightly different waveforms
You. Also, for bass drum, hi-conga, ..., maracas
The same applies to the case. Next, the memory selection signal generator 7
Based on the data CD, each musical instrument in the waveform memory 10
To select one predetermined instrument sound from 4 types of instrument sounds
To generate the memory selection signal MS. This memo
The memory selection signal MS output from the reselection signal generator 7 is
This is a 2-bit code signal, which is stored in the address memory 12 (A
Address signal to the address input terminal AD of the
It is supplied as the lower bits of the signal. Note that this memory
The detailed configuration of the selection signal generator 7 will be described later. The channel counter 11 has the waveform memory
Named instrument sounds of 10 16 rhythm instruments (that is, 1
Reading for time-division reading of information for 6 channels)
4 bits to determine readout order and readout timing
Is a binary counter. This channel counter 11
Clock φ is always counted, and the counted value is a 4-bit signal
Output as cc. The cycle of the clock φ is
Shorter than the minimum rhythm unit time for this electronic musical instrument
It's time. This channel counter 11 outputs
Is supplied to an address input terminal of the address memory 12.
Is supplied to the child AD as the upper bit of the address signal.
You. The address memory 12 stores the waveform memory 1
Read start address when reading the instrument sound signal from 0
(Start address) and the number of words to read (range)
Each is a read-on memory (ROM) stored therein. This
In this case, the recording of each musical instrument sound signal in the waveform memory 10 is performed.
Memory area (Cymbal # 1, Cymbal # 2, ..., Maracas
# 4) The start addresses L1, L2, L3,..., L64
Is the start address in the address memory 12.
L1, L2, L3,..., L64 in the memory 12a in this order.
, And the number of words N1, N2, N3,.
.., N64 are ranges in the address memory 12.
.. N64 in the memory 12b in the order of N1, N2, N3,.
Remembered. And this address memory 12 is
When the signal cc and the signal MS are supplied, these star
From the address memory 12a and the range memory 12b.
Data is read out to the columns. That is, an example
For example, now, "0000" is supplied as the signal cc, and
If “00” is supplied as the signal MS, start
Data "L1" is read from the address memory 12a.
And the data "N1" is read from the range memory 12b.
Data is read out and, for example, "00"
01 "is supplied and" 11 "is supplied as the signal MS.
When "L" is set in the start address memory 12a,
8 "is read out and the range memory
Data "N8" is read from 12b. And
Data read from start address memory 12a
SA is supplied to one input terminal A of the adder circuit 13, and
The data RG read from the read range memory 12b is
The input is supplied to one input terminal A of the comparator 14. On the other hand, from the rhythm pattern memory 1 of FIG.
The read-out drive data RD for each musical instrument (in this case, 16
Is converted to a parallel / serial conversion circuit (hereinafter referred to as P / S conversion).
Circuit is abbreviated. ) 15. This P / S conversion
The circuit 15 takes in the data RD in parallel. Same day
RD is serially output one bit at a time according to clock φ.
Power. The serial data output from the P / S conversion circuit 15
The data is sent to the 1-bit 16-stage through the OR gate 16.
Supplied to the shift register 17 and also by the clock φ.
Thus, the data is taken into the shift register 17. This shift
The serial output of the register 17 is read from the waveform memory 10.
Command terminal RC and the inverter 18
If the output signal is a "1" signal, the AND gate 19
And shift gate 17 through OR gate 16 sequentially
Is supplied to the input terminal I. Accordingly
The “1” bit output from the lever shift register 17
At that time, the output signal of the inverter 18 is "1".
Signal, this shift register is
It is not lost by being taken in the star 17. This
The signal obtained at the output terminal O of the shift register 17 is gated.
It is also supplied to 20 enable terminals EN. Next, the gate 20, the shift register 21, and the
The part consisting of the arithmetic circuit 22
When reading instrument sound signals, the data in the storage area for each instrument sound signal is read.
Data read address in a time-divisional manner.
You. In this part, the shift register 21
Calculates the maximum number of words among the word numbers N1 to N64.
16 stage shift register with enough bits for
The shift is performed according to the clock φ
Swelling. Output data of this shift register 21
D1 is supplied to the other input terminal B of the adding circuit 13.
And is supplied to one input terminal A of the adder circuit 22.
You. The other input terminal B of the adder circuit 22 is LSB.
The data of injury "1" is supplied,
The output data D2 of the adder circuit 22 has a value
It is a value obtained by adding “1”. This data D2 is compared with the data
Is supplied to the other input terminal B of the
20. This gate 20 has its enable
When a “1” signal is supplied to the terminal EN, it is opened and
Supply the data D2 to the input terminal I of the shift register 21
I do. Therefore, this gate 20, shift register 21
And the addition circuit 22, the gate 2
"1" signal is supplied to enable terminal EN of 0
The data D1 output from the shift register 21 at the time is
The value “1” is added (ie, incremented)
) Is again taken into the shift register 21 while the gate
The “0” signal is supplied to the enable terminal EN of the terminal 20.
Data D1 output from the shift register 21 when
It is lost and becomes the value "0". Next, in the memory selection signal generator 7, FIG.
Control data read from the rhythm pattern memory 1
Data CD (32-bit data in this case) is P / S converted
The signal is supplied to the circuit 23. This P / S conversion circuit 23 controls
When data CDs are loaded in parallel, the data
And outputs two bits in series according to the clock φ. Sand
The P / S conversion circuit 23 controls the control data shown in FIG.
The CD is represented by bits b1, b2, bits b3, b4, bits b5,
b6,..., bits b31, b32 in the order of 2 bits
Convert and output. The output signal of the P / S conversion circuit 23
Is supplied to one input terminal A of the selector 24. Ma
Random signal generator 25 is a random 2-bit signal
Are sequentially output according to the clock φ.
The output signal of the system signal generator 25 is
It is supplied to the force terminal B. This selector 24 controls the
When a "1" signal is supplied to the input terminal SA, the input terminal A
The supplied signal is output from output terminal 0, while
When a “0” signal is supplied to the control input terminal SA, the input terminal
The signal supplied to B is output from output terminal 0. This
Switch 26 is connected to the control input terminal SA of the selector 24
The "1" signal is supplied via the. So
The output signal of this selector 24 is
Is supplied to the input terminal A. This selector 27 is
A selector similar to the selector 24, and its control input terminal
The output signal of the P / S conversion circuit 15 is supplied to the child SA.
It is supposed to be. The output signal of this selector 27
Is supplied to the input terminal I of the shift register 28. Shi
The shift register 28 is a 2-bit, 16-stage shift register.
The output signal of the selector 27 (2-bit signal)
) Is sequentially taken in two bits at a time according to the clock φ.
To shift. From the output terminal 0 of this shift register 28
The signal MS is sequentially output, and this signal MS
To the address input terminal AD of the address memory 12
And the other input terminal B of the selector 27.
Supplied to Therefore, this shift register 28 and
According to the portion including the selector 27, the selector 27
When "1" signal is supplied to control input terminal SA
Means that the output signal of the selector 24 is
To the control input terminal S of the selector 27.
If the “0” signal is supplied to A, the shift register
The output signal MS of the shift register 28 is
As a result, the contents of the shift register 28 become low.
You will be tainted. Next, the rhythm sound source circuit having the above structure
The operation of the path 6 and the memory selection signal generator 7 will be described.
First, the player has set the selection switch 26 to the open state.
And Now, from the rhythm pattern memory 1,
Cymbal and bass drum music as instrument-specific drive data RD
Data that reproduces only the instrument sound, that is, bit a
16 bits from 16 to bit a1 are "0, ..., 0,
Data arranged like 1, 1 "is read out, and
The control data CD includes a cymbal
Bass drum # 2 as the instrument sound of bass drum #
4 respectively, that is, bits b2,
b1 is "01", bits b4 and b3 are "11", other
Data in which bits b32 to b5 are all "0", for example
Data is read. Also, for ease of explanation
At this time, each stage of the shift register 28
Are all "00". In this case, the data RD is a P / S conversion circuit.
1 bit at a time in the shift register 17 via the path 15
And the shift register 17
When the bit (16 bits) is captured, the output terminal
From the 0 side to the input terminal I side, "1", "1", "
0 ",...," 0 ".
During this time, the data CD is transmitted to the P / S conversion circuit
Input terminal A of the selector 27 via the
Bits are sequentially supplied.
The output signal of the P / S conversion circuit 15 is supplied to the input terminal SA.
Bits b2 and b1 of the data CD
And only bits b4 and b3 are stored in the shift register 28.
Be included. As a result, each stage of the shift register 28
The contents are stored in the shift register 17 in all bits of the data RD.
Output terminal 0 at the same time as the
"01", "11", etc.
The contents of each stage are rotated by 16 stages
The previous content, that is, "00". Also at this point
Therefore, the count output signal cc of the channel counter 11 is "0".
000 "(in this way, synchronization is achieved).
Therefore, at this time, the address memory 12
When the address signal supplied to the address input terminal AD is "0"
0000 "" and the start address memory 12a
"L2" is read as data SA from the
“N2” is read as data RG from the memory 12b
It is. At this point, the current drive data for each instrument is also displayed.
For the instrument-specific drive data RD immediately before the data RD
Since all the operations have been completed, each of the shift registers 21
The stage data is all “0”,
Data D1 is "0". So at this point
, The output data D3 of the adder circuit 13, ie,
The sum of the data SA and the data D1 becomes the value “L2”,
Data D3 is stored in the address input terminal AD of the waveform memory 10.
Is supplied as an address signal. Also at this time, this wave
The shift register 1 is connected to a read command terminal RC of the memory 10.
7, the "1" signal is supplied from the output terminal 0 of
Data at address L2 of the memory 10, that is, cymbal #
The first PCM data of the second word is read. This PCM
The data is supplied to the accumulator 29. Also this
At the time, the output data D2 of the adder circuit 22 has the value
Since it is “1”, the comparator 14 outputs the value “N2” and the value “1”.
Is output from the output terminal EQ as a "0" signal
And supplies it to the inverter 18.
The output signal of the inverter 18 is a "1" signal. This
Therefore, at this time, the shift register 17
The output “1” signal is supplied to the AND gate 19 and the OR gate.
Input terminal of the shift register 17 through the
I. Also, this shift register 17 is output.
Is the "1" signal to be applied to open the gate 20?
The data D2, that is, the value "1" is the shift register.
Data 21. At this point, P
Since the output signal of the / S conversion circuit 15 is "0"
(Since transmission of data RD has been completed), the shift register
The input terminal I of the star 28 is supplied with the signal MS.
You. Here, it is assumed that the next clock φ is generated.
You. In this case, the output signal cc of the channel counter 11
Becomes "0001", and the shift register 28
Because the signal MS is shifted to “11” by the
The address signal of the dress memory 12 is "000111".
Become. As a result, the data is read from the start address memory 12a.
"L8" is read out as the data SA
"N8" is read from the memory 12b as data RG.
You. In this case, the shift registers 17 and 21 are also 1
Since the shift is performed by the number of stages,
The contents are "1", "0", ... from the output side to the input side.
.., "0", "1".
The content of each stage is "0" from the output side to the input side,
... "0" and "1". That is, in this case, the data
D1 is “0”, data D3 is “L8”, waveform memory 10
The signal of the read command terminal RC is "1" signal,
As a result, the data at address L8 of the waveform memory 10, ie, the bus
PCM data of the first word of RAM # 4 is read and accumulated
It is supplied to the mullator 29. In this case, the data D2
Is “1”, and the signal at the output terminal EQ of the comparator 14 is the data R
Since G and data D1 are not equal, "0" signal, shift
The output signal of the register 17 is a "1" signal, a shift register
21 becomes "1" and the shift register
The contents of each stage of 28 are from the output side to the input side.
11 "," 00 ", ..." 00 "" 01 "
The input signal of the register 28 is "11". Assume that the next clock φ is generated.
You. In this case, the signal cc becomes "0010" and
Since the signal MS becomes “00”, the start address memory
"L9" as data SA from 12a, range memory 1
"N9" is read as data RG from 2b, respectively.
You. In this case, the shift registers 17, 21, and 28
Since each stage is shifted by one stage, shift register 1
7 is “0”,..., From the output side to the input side.
0 ”,“ 1 ”, and“ 1 ”.
The contents are “0”,..., “0”, from the output side to the input side.
"1", "1", and the contents of the shift register 28
Are “00”,..., “0” from the output side to the input side.
0 "," 01 ", and" 11 ", that is, in this case,
Data D1 is "0" and data D3 is "L9".
Since the output signal of the shift register 17 is “0”,
The reading of data from the shape memory 10 is not performed. Note that
In this case, the data D2 is “1” and the comparison output of the comparator 14 is
The signal is “0” and the input signal of the shift register 17 is “
0 ", the input data of the shift register 21 is" 0 ",
The input signal of the register 28 is "00". Hereinafter, when the clock φ is sequentially generated,
The operation is performed based on the above principle, but the channel
The output signal cc of the counter 11 has become "1111".
Until the time point, the output signal of the shift register 17 is
In this case, since the value is also "0", the data reading of the waveform memory 10 is performed.
No delivery is made. The above is the description of the current drive data RD for each musical instrument.
-Division read-out process of musical instrument sounds for control data CD
Is the operation of the first scan. This first scan
Digitally synthesized by the accumulator 29 at
The PCM data of each musical instrument sound is sent to the D / A converter 30.
Therefore, after being converted into an analog signal, the signal is supplied to the amplifier 8 in FIG.
Supplied. Next, following this point, the next clock φ is
Assume that it has occurred. In this case, the signal cc becomes "000" again.
0 "and the signal MS algae again becomes" 01 ".
"L2" is read from the start address memory 12a.
And "L2" is read from the range memory 12b.
You. In this case, the content of the shift register 17 is the output side.
"1", "1", "0"...,
0 ", and the content of the shift register 21 is
"1", "1", "0",.
It becomes "0". Therefore, data D1 is "1" and data
D3 becomes “L2 + 1”, and (L2 +
1) Data at address, that is, P of the second word of cymbal # 2
The CM data is read. In this case, the data D2
Is "2", the comparison output signal of the comparator 14 is "0",
The input signal of the register 17 is “1” and the shift register 21
Is "2", and the input data of the shift register 28 is "2".
Is "01". Then, when the next clock φ is generated,
(L8 + 1) of the waveform memory 10 in the same manner as the operation described above.
Address data, ie, the second word PC of bass drum # 4
M data is read, and clock φ is generated sequentially
And the signal cc changes from "0010" to "1111"
While the data is being read from the waveform memory 10.
Is not performed. The above is the data RD and the data CD.
2 scans in the time-division reading process for each instrument sound
This is the second operation. Hereinafter, similarly, each of the shift registers 21
Data other than "0" in stage for 16 stages
Each shift (rotation), ie one scan
Incremented each time, so that cymbal # 2 and
PCM data after the third word of bass drum # 4 is read sequentially
It will be issued. Now, the operation of the N2th scan is started.
It is assumed that N2 <N8. this
When the signal cc becomes "0000", the start address
"L2" is read out from the
"N2" is read from the memory 12b. Also this
In this case, the content of the shift register 17 is changed from the output side to the input side.
"1", "1", "0", ... "0"
Of the shift register 21 from the output side to the input side.
"N2-1", "N2-1", "0", ..., "0"
Becomes Therefore, (L2 + N2-
1) Address data, that is, the N2th word of cymbal # 2
The PCM data (final data) is read. Soshi
When the next clock φ is generated, the shift register 17
Are “1”, “0”,... From the output side to the input side.
…, “0”, “1” bit corresponding to the cymbal
Changes to “0”, and then PCM data of cymbal # 2
Will not be read. When the operation of the N8th scan is performed,
In this case, in the same manner as the operation of the N2 scan described above,
It corresponds to the bass drum in the shift register 17 "
The bit of "1" changes to "0", and thereafter the bass drum # 4
Reading of PCM data is not performed. As described above, the current musical instrument
Musical instrument sounds corresponding to the drive data RD and the control data CD
Time-division reading is performed. In addition, the reading mentioned above
The output operation is performed by the following instrument-specific drive data RD and control data.
All processes are completed before the data CD is supplied. Also mentioned above
In the example, the control data CD has bits b2 and b1 of "0".
0 ", data with bits b4 and b3 being" 10 "
If there is, each PC of cymbal # 1 and bass drum # 3
M data will be read. This practice
According to the example, the control sound of each rhythm instrument to be sounded is controlled.
Data from four different instrument sounds with different waveforms depending on the data CD
It can be arbitrarily selected, so that the rhythm sound is actually
Make the sound more natural and closer to the rhythm performance of
be able to. Next, in this embodiment,
Random instrument sounds are randomly selected from 4 types of instrument sounds
Will be described. In this case, select switch
26 may be left open. That is, in this case,
Instrument-specific drive data RD is taken into shift register 17
In parallel with the operation performed, the random signal generator 25 generates
The selector 24 and the selector 2
7 are sequentially taken into the shift register 28. I
Therefore, in this case, the signal MS is the rhythm to be read.
It is random for the instrument sound of the instrument. According to this embodiment,
4 types of musical instruments with different waveforms
It is also possible to select randomly from the instrument sounds.
Extremely natural feeling that the rhythm sound is closer to the actual rhythm performance
The sound can be rich. In the embodiment described above,
Choose from four types of instrument sounds for each rhythm instrument
But this allows me to choose from many types
Of course, it doesn't matter. [0037] As is clear from the above description,
ClearlyAccording toNumber n of musical tone generation channels in waveform memory
The first control data is stored by storing more than a plurality of m waveform data.
From a plurality of n tone generation channels based on the data
Instructs the tone generation channel to be pronounced
Of the plurality of m waveform data based on the second control data
Specify the waveform data corresponding to the rhythm instrument sound to be generated from
As shownSimple configuration and tone
Several differentRhythm instrument soundToVariouslyCan occur
The effect that it can be obtained is obtained.Further, according to claim 2
According to the invention, one set of a plurality of waveform data similar to each other is provided.
Is stored in the waveform memory as
Waveform data can be used properly, and therefore more
The effect that colorful performance can be performed is obtained. Ma
According to the third and sixth aspects of the present invention,
It is configured to produce multiple rhythm instrument sounds
Can play multiple rhythm instrument sounds at the same time
The effect is obtained. Further, the invention according to claim 4
According to the above, reading of waveform data from the waveform memory
Controlled by read start address and range address
The waveform data is stored in the waveform memory.
Even if the position is changed, the read start address
Read control can be performed only by changing the address.
Address management of the waveform memory
The effect is obtained.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing the configuration of I ruri rhythm sound generator to an embodiment of the present invention. FIG. 2 is a diagram showing a format of instrument-specific drive data RD and control data CD in the embodiment. FIG. 3 is a block diagram showing a detailed configuration of a rhythm sound source circuit 6 and a memory selection signal generator 7 in the embodiment. FIG. 4 is a diagram showing stored contents of a waveform memory 10 in the embodiment. [Description of Signs] 1 Rhythm pattern memory 2 Rhythm selection switch 5 Rhythm pattern reading circuit 6 Rhythm sound source circuit 7 Memory selection signal generator 10 Waveform memory 11 Channel counter 12 Address generator (address memory) 17, 21 Shift register A1 Address signal RD Instrument-specific driving data

Claims (1)

(57) [Claims] A waveform memory for storing a plurality of m waveform data corresponding to the waveforms of the plurality of rhythm instrument sounds, wherein the rhythm instrument is based on arbitrary waveform data among the plurality of m data stored in the waveform memory; A rhythm musical instrument sound generating means comprising a plurality of n (n <m) musical tone generating channels capable of producing sounds; and one of the plurality of n musical tone generating channels.
First control data for tone generation can be controlled, and generating a second control data for instructing the waveform data corresponding to said rhythm instrument sounds to be generated from the waveform data of a plurality of m as one set data Channel sound instructing means for instructing, based on the first control data in the set data, a sound generating channel to be sounded from among the plurality of n sound generating channels, Waveform data indicating means for indicating waveform data corresponding to the rhythm instrument sound to be generated from the plurality of m waveform data, based on the second control data in the set data; and wherein the set data is generated. The tone generation channel designated by the channel tone instructing means is designated by the waveform data instructing means. Starting reading of the obtained waveform data from the waveform memory to generate each of the rhythm instrument sounds. 2. The waveform memory of the rhythm instrument sound generating means stores a plurality of m pieces of waveform data larger than the number of the rhythm instrument sounds, and a plurality of waveforms corresponding to one rhythm instrument sound and having similar waveforms to each other. The rhythm sound generator according to claim 1, wherein the data is stored as one set. 3. When the set data is generated, each tone generating channel whose sound is instructed by the channel sound instructing means reads out the waveform data instructed by the waveform data instructing means from the waveform memory in a time division manner. The rhythm sound generating device according to claim 1, wherein, when started, each of the rhythm instrument sounds is generated in a time-division manner. 4. A waveform memory for storing a plurality of m waveform data corresponding to the waveforms of the plurality of rhythm instrument sounds, wherein the rhythm instrument is based on arbitrary waveform data among the plurality of m data stored in the waveform memory; A rhythm musical instrument sound generating means comprising a plurality of n (n <m) musical tone generating channels capable of producing sounds; reading start addresses of the plurality of m waveform data in the waveform memory; An address memory for storing each range address which is an address difference between the read start address and one of the plurality of n tone generating channels;
First control data for tone generation can be controlled, and generating a second control data for instructing the waveform data corresponding to said rhythm instrument sounds to be generated from the waveform data of a plurality of m as one set data Channel sound instructing means for instructing, based on the first control data in the set data, a sound generating channel to be sounded from among the plurality of n sound generating channels, When the set data is generated, based on the second control data in the set data, waveform data indicating means for indicating the read start address from among the read start addresses of the plurality of m waveform data; Each tone generation channel whose sound is instructed by the channel sound instructing means is output by the waveform data instructing means. Starting the reading of the specified waveform data from the read start address of the waveform memory, and terminating the reading when the number of readings matches the range address, thereby generating the rhythm instrument sounds, respectively. A rhythm sound generator characterized by the following. 5. For one of a plurality of n tone generation channels
First control data for tone generation can be controlled, and generating a second control data for instructing the waveform data corresponding to said rhythm instrument sounds to be generated from the waveform data of a plurality of m as one set data A plurality of n (n <m) musical tone generating channels capable of generating the rhythm instrument sound based on arbitrary waveform data based on the first control data in the set data. A channel sounding instructing step of instructing the tone generation channel to be sounded, and corresponding to the rhythm musical instrument sound to be generated from the plurality of m waveform data based on the second control data in the set data. A waveform data instructing step of instructing the selected waveform data; and a plurality of m waveform data corresponding to waveforms of a plurality of rhythm instrument sounds when the set data is generated. Starts reading of the waveform data designated in the waveform data designation step from the waveform memory for storing the rhythm instrument sounds from the respective musical tone generation channels designated in the channel tone designation step. A sound generation control method for a rhythm sound generation device, comprising: 6. In the rhythm instrument sounding process, when the set data is generated, an instruction is given in the waveform data indicating process from the waveform memory that stores a plurality of m waveform data corresponding to a plurality of rhythm instrument sound waveforms. The reading of the waveform data is started in a time-sharing manner,
6. The sound control method for a rhythm sound generator according to claim 5, wherein the rhythm instrument sound is generated in a time-division manner from each musical sound generation channel specified in the channel sound generation instruction process.