JP2020154217A - Electronic musical instrument, control method of electronic musical instrument and program - Google Patents

Abstract

To favorably use each circuit in a sound source.SOLUTION: An electronic musical instrument is provided with a CPU 13, a RAM 15 for storing waveform data, sound source channels 21-1 to 21-64 provided with multipliers 34a to 34e for obtaining adjustment data by outputting and adjusting generated data based on the waveform data, cumulative registers 22A to 22E which cumulate and hold the adjustment data of each multiplier 34a to 34e as cumulative data, a DSP 23 which outputs a music signal from the cumulative data of the cumulative registers 22A to 22E, and a tone selection operator 12A which selects one from a plurality of tones including a drawbar organ tone. The CPU 13 stores the cumulative data of the cumulative register 22E in the RAM 15 when selecting the drawbar organ tone, and makes any one of the sound source channels 21-1 to 21-64 read the cumulative data stored in the RAM 15, and read the cumulative data of the cumulative register 22E, and makes the cumulative register 22E hold software-processed result data when selecting a tone other than drawbar organ.SELECTED DRAWING: Figure 2

Description

The present invention relates to electronic musical instruments, control methods and programs for electronic musical instruments.

While supporting a plurality of sound source methods, it is possible to avoid a reduction in the number of simultaneous sounding channels, and a technique has been proposed to enable music synthesis with a high degree of freedom. (For example, Patent Document 1)

Japanese Unexamined Patent Publication No. 2000-221981

In an electronic musical instrument that synthesizes organ music sounds using a plurality of sine wave data, including the technique described in Patent Document 1, the sine wave data stored in the memory is read out at different pitches for each of a plurality of sound source channels. Each is accumulated, and the accumulated sound data is temporarily held in a specific area of the memory. Then, the waveform data synthesized at each pitch of the organ sound held in the memory is read out by a sound source channel different from that at the time of holding, resynthesized, and output.

In this type of electronic musical instrument, for example, a sound source channel that generates nine pitch sounds having different lengths and one sound source channel for generating a memory write address by using the waveform generation address of the sound source channel are used in an organ. A total of 10 sound source channels are required for waveform generation.

These sound source channels are used for other musical tones when no organ sound is selected. On the other hand, the dedicated mixer accumulation function for accumulating and synthesizing the waveform data of the organ sound is not used when the organ sound is not selected.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an electronic musical instrument, a control method and a program of the electronic musical instrument that make good use of each circuit in the sound source.

One aspect of the present invention outputs the first processor, the memory for storing the waveform data, and the adjusted data whose output level of the generated data generated based on the waveform data read from the memory is adjusted. A plurality of accumulation registers each having a plurality of sound source channels having a plurality of multipliers and the adjustment data output from the plurality of multipliers in the plurality of sound source channels are accumulated and held as cumulative data. A second processor that outputs a music signal corresponding to the cumulative data held in each of the plurality of cumulative registers, and a tone color selection operator that selects one from a plurality of tones including the tone of the drawbar organ. The first processor comprises, when a tone of the drawbar organ is selected based on a user operation on the tone selection operator, the accumulation of any one of the plurality of accumulation registers. The cumulative data held in the register is stored in the memory, the cumulative data stored in the memory is read into one of the plurality of sound source channels, and the tone color selection operator is used. When a certain tone other than the tone of the drawbar organ is selected, the cumulative data held in any of the cumulative registers is read, and software processing is executed on the read cumulative data. The result data thus obtained is held in one of the above-mentioned accumulation registers.

According to the present invention, each circuit in the sound source can be effectively utilized.

The block diagram which shows the structure of the whole electronic musical instrument which concerns on one Embodiment of this invention. The block diagram which shows the detailed circuit structure of a sound source part and its surroundings mainly which concerns on this embodiment. The block diagram which shows the common circuit structure of each cumulative register which constitutes the mixer which concerns on this embodiment. The functional block diagram which shows the processing content on the software when the distortion processing is executed in the expand processing part of the DSP which concerns on the same embodiment. The block diagram which shows the generation structure of the waveform data at the time of selecting the draw bar organ which concerns on the same embodiment. The figure which illustrates the processing of the waveform data at the time of selection by the slicer which concerns on the same embodiment. The flowchart which shows the processing content which is executed at any time at the time of the tone color change operation which shows the processing content which concerns on the same embodiment. The flowchart which shows the processing content which the CPU which received the interrupt signal from the sampling synchronization interrupt generator of the DSP which concerns on this embodiment executes with respect to the 5th cumulative register. The flowchart which shows the processing content which executes according to the interrupt signal generated for each sampling cycle which concerns on the same embodiment. The flowchart which shows the processing content which executes according to the interrupt signal generated according to the beat timing which concerns on the same embodiment.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a block diagram showing the configuration of the entire electronic musical instrument 10 according to the present embodiment. In the figure, the operation signals of the keyboard unit 11 and the key operation unit 12 having various operation keys are input to the CPU 13 of the LSI chip CH. The CPU 13 temporarily stores the operation program for the electronic musical instrument, the ROM 14 that stores the standard data including the waveform data for various tones, and the waveform data when the musical sound is generated, via the bus B in the LSI chip CH. It is connected to the RAM 15, the sound source unit 16 that generates digital value audio data corresponding to the operated content, and the DAC 17.

The CPU 13 transmits parameters such as pitch and volume to the sound source unit 16 according to the operation signals received from the keyboard unit 11 and the key operation unit 12. Upon receiving this, the sound source unit 16 outputs the corresponding digital audio data to the DAC 17.

The DAC 17 converts the analog audio signal according to the digital audio data input from the sound source unit 16 into an analog audio signal, and outputs the signal to the amplifier (amp) 18 outside the LSI chip CH. The speaker 19 is loudened and emitted by the analog audio signal appropriately amplified by the amplifier 18 at the amplification factor.

FIG. 2 is a block diagram mainly showing a detailed circuit configuration of the sound source unit 16 and its surroundings. The operation signal accompanying the performance on the keyboard unit 11 and the operation signals of the tone color selection operator 12A and the drawbar operator 12B constituting the key operation unit 12 are input to the CPU 13.

The tone color selection controller 12A is an operation unit for selectively operating a musical instrument, an acoustic effect function, or the like, and the musical instrument includes a drawbar organ.

The drawbar operator 12B includes nine slide key operating units that serve as drawbars for the drawbar organ when a drawbar organ is selected as the musical instrument. The drawbar is an operator with a continuous operation amount, which corresponds to a stop (sound plug) of a pipe organ, and is "16 [ft]" "5-1" following the length of the pipe corresponding to the pipe organ. / 3 [ft] "8 [ft]" "4 [ft]" "2-2 / 3 [ft]" "2 [ft]" "1-3 / 5 [ft]" "1-1 / 3" They are named "[ft]" and "1 [ft]".

The drawbar controller 12B has an operability in which the volume is increased by pulling down each slide key toward the front side, and when the slide key is pushed up to the farthest side, the volume of the corresponding sound is "0 (zero)". ) ”, The maximum volume is reached when the volume is lowered to the front.

In addition, when the drawbar organ is not selected as the instrument, the drawbar controller 12B continuously performs other functions such as the volume balance of each input / output channel in the mixer function and the frequency characteristics in the equalizer function by operating the slide keys. It becomes an operator that makes variable adjustments to.

The sound source unit 16 has sound source channels 21-1,21-2, 21-64, a mixer 22, and a DSP 23 (Digital Signal Processor) 23.

Sound source channels 21-1,21-2, ... 21-64 are used as individual sound source units for 64 sounds that can be simultaneously generated in the present embodiment. In the following, the sound source channel 21-1 will be described as a representative. The sound source channel 21-1 includes a waveform interpolation unit 31, a DC filter (DC filter) 32, a DC amplifier (DC amplifier) 33, and multipliers 34a to 34e.

The waveform interpolation unit 31 executes compression / decompression in the time axis direction and waveform interpolation processing according to the scale information instructed by the CPU 13 based on the waveform data read from the RAM 15, and outputs the waveform to the DC filter 32. To do.

The DC filter 32 adjusts the sound quality by removing the high frequency component of the interpolated waveform data output by the waveform interpolation unit 31 based on the scale information instructed by the CPU 13, and outputs the adjusted waveform data to the DC amplifier. Output to 33.

The DC amplifier 33 adjusts the volume by variably setting the amplitude of the waveform data output by the DC filter 32 based on the volume information instructed by the CPU 13, and outputs the adjusted waveform data to the multipliers 34a to 34e. ..

The multipliers 34a to 34e execute multiplication according to the multiplier instructed by the CPU 13, and the obtained waveform data is used as the first cumulative register 22A, the second cumulative register 22B, and the third multiplier of the mixer 22. It is output to and held in the accumulation register 22C, the fourth accumulation register 22D, and the fifth accumulation register 22E.

As described above, a total of 64 circuits having the same configuration as the sound source channel 21-1 are provided, and waveform data of a maximum of 64 channels is output to and held in the cumulative registers 22A to 22E of the mixer 22. To.

The first cumulative register 22A of the mixer 22 is a register that accumulates and holds waveform data that is the main sound of the right channel (Rch), and the holding contents are read out to the adder 23B of the DSP 23.

The second cumulative register 22B is a register that accumulates and holds waveform data that is the main voice of the left channel (Lch), and the holding contents are read out to the adder 23C of the DSP 23.

The third cumulative register 22C is a register that accumulates and holds waveform data for chorus, and the holding contents are read out to the chorus processing unit 23D of the DSP 23.

The fourth cumulative register 22D is a register that accumulates and holds waveform data for reverb, and the holding contents are read out to the reverb processing unit 23E of the DSP 23.

The fifth accumulation register 22E is a register that accumulates and holds waveform data for various expansion processing, and the holding contents are read out to the expanding processing unit 23F of the DSP 23.

The DSP 23 includes a sampling synchronization interrupt generator 23A, adders 23B and 23C, a chorus processing unit 23D, a reverb processing unit 23E, and an expand processing unit 23F. The DSP 23 collects various read waveform data after performing processing as necessary, and outputs the stereo waveform data of the left and right channels.

Since the sampling synchronization interrupt generator 23A includes the processing of the CPU 13 which is an external processor instead of the processing processing in the DSP 23 in a part of the processing, in order to synchronize the sampling period between these processors. , Generates an interrupt signal to the CPU 13.

The chorus processing unit 23D executes a process of generating a chorus voice to be superimposed on the main voice using waveform data for up to 64 channels, and outputs the obtained waveform data to the adders 23B and 23C as an adder.

The reverb processing unit 23E executes a process of generating a reverb sound superimposed on the main sound using the waveform data of a maximum of 64 channels, and outputs the obtained waveform data to the adders 23B and 23C as an adder.

The expand processing unit 23F executes various expansion processing based on software processing controlled by the CPU 13, and outputs waveform data to the adders 23B and 23C as an adder, while generating waveform data of the drawbar organ described later. , The generated waveform data is sent to the RAM 15 for writing.

The adder 23B includes the cumulative waveform data of the right channel, which is the main sound read from the first cumulative register 22A, and the waveform processed by the chorus processing unit 23D, the reverb processing unit 23E, and the reverb processing unit 23E. The data is added, and the sum waveform data is output to the DAC 17 outside the sound source unit 16.

Similarly, the adder 23C processes the cumulative waveform data of the left channel, which is the main sound read from the second accumulation register 22B, and the chorus processing unit 23D, the reverb processing unit 23E, and the reverb processing unit 23E. The generated waveform data is added, and the sum waveform data is output to the DAC 17 outside the sound source unit 16.

FIG. 3 is a block diagram showing a common circuit configuration of the first cumulative register 22A to the fifth cumulative register 22E constituting the mixer 22. Each of the accumulation registers 22A to 22E is composed of an adder 41, an accumulation unit 42, a selector 43, and a register 44.

The waveform data input from the sound source channels 21-1,21-2, 21-64 is added to the contents held by the accumulator 42 in the adder 41, and the sum of the waveform data is the accumulator 42. Is output to. The accumulator 42 accumulates waveform data from the adder 41 and outputs the waveform data to the selector 43 and the adder 41. The selector 43 selects either the waveform data output by the accumulating unit 42 or the waveform data sent from the CPU 13 via the bus B according to the selection signal instructed by the CPU 13 via the bus B, and registers. Hold it at 44. The register 44 holds the waveform data output by the selector 43 according to the write signal wr of the CPU 13 and the like, and outputs the held contents to the DSP 23, while the held contents are appropriately read by the CPU 13.

In this way, the waveform data from the sound source channels 21-1,21-2, ... Are the respective systems (right channel main voice, left channel main voice, chorus, reverb, extension) in the cumulative registers 22A to 22E. Weighting is performed according to the above and cumulative processing is performed.

In the process, the CPU 13 reads the waveform data held in the register 44, performs signal processing as needed, and executes a process of writing the processed waveform data again via the selector 43. In this way, the circuit configuration on the hardware is adopted so that the CPU 13 can execute the control including various effect processing and the like.

FIG. 4 is a functional block diagram showing the processing contents on the software when the distortion processing is executed by using the expanding processing unit 23F of the DSP 23.

The drive adjustment multiplier 51 multiplies the input waveform data by the drive coefficient given by the CPU 13, and outputs the waveform data as the product to the shifter 52. The shifter 52 amplifies the waveform data according to the shift magnification given by the CPU 13, for example, an amplification factor of 256 times at the maximum, obtains the waveform data intentionally overloaded, and outputs the waveform data to the clip processing unit (CLP) 53. ..

The clip processing unit 53 executes processing based on the clip saturation function that converts the overloaded waveform data value into a positive maximum value and a negative minimum value to make the waveform continuous. Harmonics are generated due to the large distortion of the sound due to the processing by the clip processing unit 53. Therefore, the harmonics are removed by the low-pass filter (LPF) 54 in the subsequent stage, adjusted to an appropriate sound quality, and output.

FIG. 5 is a block diagram showing a waveform data generation configuration when a tone color is selected for the drawbar organ by operating the tone color selection controller 12A. The drawbar organ basically has the above-mentioned 9 feet (wavelength, pitch), and sound source channels 21-1,21-2, ... 21-9 are used at different pitches from the waveform data of the same sine wave. , 9 channels are accumulated in the 5th accumulation register 22E of the mixer 22. In each sound source channel 21-1,21-2, ... 21-9, based on the waveform data read from the RAM 15 by the waveform interpolation unit 31, in the time axis direction of the waveform interpolation unit 31 according to various musical scales. Compression / decompression and interpolation processing are performed, and the result of multiplication processing by the multiplier 34e with a multiplier corresponding to the amount of operation by the corresponding drawbar operator 12B is output to the fifth accumulation register 22E.

In the fifth cumulative register 22E, waveform data of the same scale for 9 channels is accumulated and held, and the held contents are sequentially written to the RAM 15 according to the "WG write channel" 61 which is the write address instructed by the CPU 13. ..

In this "WG light channel" 61, the address value corresponding to the sound source channel 21-1,21-2, ... 21-10 in the sound source channel 21-1,21-2, ... 21-64 is removed. It becomes the content.

At the time of generating the waveform data of each scale according to the operation amount of each drawbar of the drawbar organ and writing to the RAM 15, the CPU 13 sends the sound source channels 21-1,21-2, ... 21-9 to the multipliers 34a to 34d. Let the multiplier be "0 (zero)". Therefore, the waveform data is not sent to the first cumulative register 22A to the fourth cumulative register 22D of the mixer 22, and is not sounded as it is.

In this way, the waveform data stored in the RAM 15 is read out in response to the amount of operation by the drawbar operator 12B, and the sound source channels 21-1 and 21-2, ... 21-10 are removed from the sound source channels 21-110, ... Using any of 21-64, the musical sound of the drawbar organ is generated and output by the sound source unit 16.

At this time, the reason why the reproduction operation based on the waveform data is intentionally performed by using any of the sound source channels 21-110 and 21-64 with the sound source channels 21-1,21-2, ... 21-10 removed. Is an operation of writing waveform data to the RAM 15 using the sound source channels 21-1,21-2, ... 21-10, and reading the waveform data stored in the RAM 15 as waveform data for reproduction, and the sound source channel 21-110. This is because it is possible to carry out the operation generated by using any of 21 to 64 in parallel at least partially.

FIG. 6 shows a waveform that the CPU 13 executes by software processing using the fifth cumulative register 22E of the mixer 22 when the slicer is selected as one of the selections other than the drawbar organ by the tone color selection operator 12A. It is a figure which illustrates the processing of data. The slicer is a function of turning the sound on / off in time with the beat, and is a process based on the store information managed by the CPU 13, and is therefore considered to be a function suitable for software processing by the CPU 13.

FIG. 6A illustrates a musical tone type output when a slicer is selected. For each beat, only the first half of the beat is output, and the second half of one beat is stopped from being output.

FIG. 6B is a diagram for explaining the function executed by the CPU 13 on the software by replacing it with an electric circuit in principle. Here, the expand processing unit 23F is used as a simple switching circuit, and the input musical tone and the silent "0" are doubled, for example, when the tempo of the musical tone is set to 120 [bpm]. By switching in synchronization with the tempo at 240 [bpm], it is possible to output a musical sound type sound as shown in FIG. 6 (A).

Hereinafter, the operation of the present embodiment will be described.
FIG. 7 is a flowchart showing a processing content that is executed at any time mainly based on the control of the CPU 13 when an operation for changing the tone color is performed by the tone color selection controller 12A. Even if the tone color selection operator 12A does not perform an operation for selecting a tone color, if any operation is performed by the drawbar operator 12B, the process of FIG. 7 is similarly started from the beginning.

Initially, the CPU 13 initializes the sound source unit 16 (step S101). The specific content of this initialization is the sampling synchronization interrupt of the DSP 23, in which all the multipliers of the sound source channels 21-1,21-2, 21-64 to the multipliers 34a to 34e are set to "0". This includes processing such as disabling (impossible) transmission of an interrupt signal to the CPU 13 by the generator 23A, and temporarily prohibiting writing of waveform data to the fifth cumulative register 22E of the mixer 22.

Next, the CPU 13 determines whether or not the operation of the tone color selection controller 12A is an operation for selecting the drawbar organ (step S102).
In the case of the operation for selecting the draw bar organ (YES in step S102), the CPU 13 connects the multipliers 34a to 34d of the sound source channels 21-1, 21-2, 21-9 of the sound source unit 16 to the multipliers 34a to 34d. The multiplier is set to "0" to prevent the waveform data from being accumulated in the first to fourth accumulation registers 22A to 22D, while the sound source channels 21-1,21-2, ... 21. The multiplier of each multiplier 34e of −9 is set to a value corresponding to the operation content of the drawbar operator 12B (step S103).

In this way, as described with reference to FIG. 5, the CPU 13 starts an operation of generating waveform data of each scale corresponding to the operation of each draw bar of the second accumulation register 22B and storing the waveform data in the RAM 15 (step S104). , Returns to the standby state in preparation for the next process.

Further, in step S102, if the operation of the tone color selection operator 12A is not an operation for selecting the drawbar organ (NO in step S102), then the CPU 13 presets the operation of the tone color selection operator 12A. It is determined whether or not the sound is an operation for creating waveform data by software processing of the CPU 13 itself, for example, a dance synth sound using the slicer effect (step S105).

When the operation of the tone color selection controller 12A is a dance synth sound using the slicer effect (YES in step S105), the CPU 13 enables the DSP 23's sampling synchronization interrupt generator 23A to transmit an interrupt signal to the CPU 13. Set to (possible).

In addition, the CPU 13 is, for example, in the sound source channels 21-1,21-2, 21-64 of the sound source unit 16 assigned to generate the dance synth sound due to the slicer effect, each multiplier 34a to The multiplier to 34d is set to "0" so that the waveform data is not accumulated in the first to fourth accumulation registers 22A to 22D, while the multiplier of the multiplier 34e of the sound source channel is set. , Set to a specific value preset according to the slicer effect.

At the same time, the CPU 13 is set to a process of creating waveform data by software processing of the CPU 13 itself and holding it cumulatively in the RAM 15 (step S106), and then returns to the standby state in preparation for the next process.

In FIG. 8, by permitting the generation of the interrupt signal by the sampling synchronization interrupt generator 23A of the DSP 23, the CPU 13 transmits the interrupt signal to the fifth accumulation register 22E each time the interrupt signal is received from the sampling synchronization interrupt generator 23A. It is a flowchart which shows the content of the process to execute.

At the beginning, the waveform data held in the fifth accumulation register 22E is read out (step S201). The CPU 13 further performs a slicer effect process on the read waveform data (step S202). Then, the CPU 13 writes the processed waveform data to the fifth accumulation register 22E again (step S203), and returns to the standby state in preparation for the next processing.

By causing the sampling synchronization interrupt generator 23A to transmit an interrupt signal to the CPU 13 for each sampling cycle to perform such processing, synchronization of operations between the CPU 13 and the DSP 23, which are different processors, is maintained.

Regarding the processing for the slicer effect actually executed by the CPU 13, two types of interrupt processing can be considered, which will be described with reference to FIGS. 9 and 10.

FIG. 9 is a flowchart showing the processing contents to be executed in response to the interrupt signal generated in each sampling cycle. The CPU 13 determines whether or not the flag "1" is set in the flag register prepared inside the CPU 13 called "Cut On" at that time for the interrupt signal generated in a constant sampling cycle (step S301). ..

Here, when it is determined that the interrupt signal is at the timing position of the latter half of each beat shown in FIG. 6 (A) and the flag "1" is set in the flag register "Cut On" (YES in step S301). ), All the multipliers of the corresponding sound source channels 21-1,21-2, 21-64 to the multipliers 34a to 34e are set to "0", and the cumulative registers 22A to 22E of the mixer 22 are set. It is assumed that there is no waveform data to be written (step S302).

The CPU 13 returns to the standby state in preparation for the next process regardless of whether or not the process in step S302 is executed.

FIG. 10 is a flowchart showing the processing content to be executed according to the bpm interrupt signal input to the CPU 13 according to the beat position of the beat set at that time. Here, as shown in FIG. 6, a case where the number of beats per minute bpm = 120 set at that time will be described.

The CPU 13 corresponds to the interrupt signal from the sampling synchronization interrupt generator 23A, and determines whether or not the time point is the beat position, that is, the start position of the beat (step S401).

When it is determined that the head is beating (YES in step S401), the CPU 13 sets the flag "1" in the flag register "Cut On" (step S402), and then returns to the standby state in preparation for the next process.

Further, in step S401, when it is determined that the time point is not the beat position (NO in step S401), the CPU 13 then sets the value of the bpm counter that counts the beats inside the CPU 13 to "120". It is determined whether or not the timing is at the center position of the beat (step S403).

When the value of the bpm counter is "120" (YES in step S403), the CPU 13 immediately resets the flag "1" of the flag register "Cut On" to "0" (step S404). Return to the standby state in preparation for the next process.

Further, in step S403, when the value of the bpm counter is not "120" (NO in step S403), the CPU 13 waits until the value of the bpm counter becomes "120", and then sets the flag register "Cut On" again. The flag “1” is reset to “0” (step S404), and the process returns to the standby state in preparation for the next process.

In the CPU 13, tempo data for other sequencers and accompaniment performance, beat progress, progress value of bpm count, etc. are managed at any time, and writing and reading to the fifth cumulative register 22E as a part of the sounding unit can be performed. Since the configuration is possible, the slicer effect can be realized by a simple processing flowchart as shown in FIGS. 9 and 10.

Further, in step S105 of FIG. 7, when the operation of the tone color selection operator 12A is not a dance synth sound using the slicer effect (NO in step S105), the CPU 13 then operates the tone color selection operator 12A. , It is determined whether or not a guitar sound with distortion (distortion) is selected (step S107).

When the operation of the tone color selection controller 12A is a selection operation for a guitar sound accompanied by distortion (YES in step S107), the CPU 13 determines the sound source channels 21-1,21-2, ... 21-64. Of these, in the sound source channel assigned to generate the guitar sound, the multipliers for the multipliers 34a to 34d are set to "0", and the waveform data is accumulated in the first to fourth accumulation registers 22A to 22D. On the other hand, the multiplier of the multiplier 34e of the sound source channel is set to a predetermined value set in advance corresponding to the distortion, and the extended effect is used.

At the same time, the CPU 13 is set to load the guitar sound distortion program in the circuit unit that processes the extended effect of the DSP 23, which is not shown in FIG. 2, and process the waveform data held in the expand processing unit 23F. In the above (step S108), the process returns to the standby state in preparation for the next process.

The expansion effect processing executed by the DSP23 is not limited to the distortion of the guitar sound, for example, a delay, a flanger, a phaser, a compressor, a MOD LPF that periodically cuts the high frequency range of the sound, and a periodic low frequency range of the sound. Processing such as MOD HPF to cut to, a filter to instruct various increase / decrease processing by setting the frequency range of sound, an equalizer, and the like can be raised.

When executing these expansion effect processing, the multiplier of each multiplier 34a to 34d of the sound source channel is set to other than "0", and the waveform data is accumulated in the first to fourth accumulation registers 22A to 22D. It may be processed so that it is output. ,
Further, in step S107, when the operation of the tone color selection operator 12A is not a selection operation for a guitar sound accompanied by distortion (distortion) (NO in step S107), the CPU 13 operates the tone color selection operator 12A. Corresponding to, in the sound source channel assigned to the manipulated tone among the sound source channels 21-1,21-2, ... 21-64, the multiplier to each multiplier 34a to 34d is given according to the tone. The multiplier is set to a preset multiplier so that the waveform data is accumulated in the first to fourth accumulation registers 22A to 22D, while the multiplier of the multiplier 34e of the sound source channel is set to "0". After setting the waveform data for expansion processing not to be accumulated in the fifth accumulation register 22E (step S109), the process returns to the standby state in preparation for the next processing.

As described in detail above, according to the present embodiment, each circuit in the sound source can be effectively utilized.

Further, in the present embodiment, the DSP 23 is provided with an interrupt generator 23A for sampling synchronization, and in particular, a tone other than the drawbar organ is selected, and in order to reduce the load on the DSP 23, the effect processing is performed by the CPU 13, and the fifth cumulative register 22E When the CPU 13 reads and writes the waveform data by the software, an interrupt signal can be appropriately transmitted to ensure synchronization between the two processors so that the musical sound can be smoothly output.

Further, in the present embodiment, it functions as a drawbar when the tone of the drawbar organ is selected by the tone selection controller 12A, and is processed by the CPU 13 or DSP 23 when a tone other than the tone of the drawbar organ is selected by the tone selection controller 12A. A drawbar operator 12B as a continuous operator that functions as an operator for adjusting parameters in the software to be used is further provided.

As a result, the operation when selecting a tone of the drawbar organ can be reproduced more realistically, while the continuous controls used for them can be effectively used when selecting another tone.

The invention of the present application is not limited to the above-described embodiment, and can be variously modified at the implementation stage without departing from the gist thereof. In addition, each embodiment may be carried out in combination as appropriate as possible, in which case the combined effect can be obtained. Further, the above-described embodiment includes inventions at various stages, and various inventions can be extracted by an appropriate combination in a plurality of disclosed constituent requirements. For example, even if some constituent requirements are deleted from all the constituent requirements shown in the embodiment, the problems described in the problem column to be solved by the invention can be solved, and the effects described in the effect column of the invention can be solved. If is obtained, a configuration in which this configuration requirement is deleted can be extracted as an invention.

Hereinafter, the inventions described in the claims of the original application of the present application will be added.
[Claim 1]
With the first processor
Memory for storing waveform data and
A plurality of sound source channels each having a plurality of multipliers for outputting adjusted data whose output level of the generated data generated based on the waveform data read from the memory is adjusted, and
A plurality of accumulation registers that accumulate the adjustment data output from each of the plurality of multipliers in the plurality of sound source channels and hold the adjustment data as accumulated data, and
A second processor that outputs a musical tone signal corresponding to the cumulative data held in each of the plurality of cumulative registers, and a second processor.
A tone selection controller that selects one from multiple tones, including the tone of the drawbar organ,
With
The first processor is
When a tone of the drawbar organ is selected based on a user operation on the tone selection operator, the cumulative data held in one of the plurality of cumulative registers is stored in the memory. The cumulative data stored in the memory is read into one of the plurality of sound source channels.
When a certain tone other than the tone of the drawbar organ is selected by the tone selection operator, the cumulative data held in any of the cumulative registers is read, and the read cumulative data is read. The result data obtained by executing the software processing is held in one of the above-mentioned accumulation registers.
Electronic musical instrument.
[Claim 2]
The electronic musical instrument according to claim 1, wherein the software processing is an effect processing including a slicer.
[Claim 3]
The electronic musical instrument according to claim 1, wherein the certain timbre is a timbre of a synthesizer.
[Claim 4]
The second processor synchronizes between the two processors by transmitting an interrupt signal for causing the first processor to execute software processing when the certain tone color is selected. The electronic instrument according to any one of claims 1 to 3, comprising the above.
[Claim 5]
The electronic musical instrument according to any one of claims 1 to 4, further comprising a drawbar operator that adjusts the volume of each foot when a musical instrument of a drawbar organ is selected by the tone selection operator.
[Claim 6]
The first processor is
When a tone of the drawbar organ is selected based on a user operation on the tone selection operator, a multiplier of zero is set in a multiplier corresponding to an accumulation register other than any of the accumulation registers, and any of the above. The electronic musical instrument according to claim 5, wherein a value corresponding to a user operation on the drawbar operator is set in the multiplier corresponding to the accumulation register.
[Claim 7]
Each has a first processor, a memory for storing waveform data, and a plurality of multipliers for outputting adjusted data whose output level of generated data generated based on the waveform data read from the memory is adjusted. A plurality of accumulation registers for accumulating a plurality of sound source channels and the adjustment data output from the plurality of multipliers in the plurality of sound source channels and holding the adjustment data as accumulated data, and the plurality of accumulations. An electronic instrument including a second processor that outputs a musical sound signal corresponding to the cumulative data held in each register, and a tone color selection operator that selects one from a plurality of tones including the tone of the drawbar organ. It is a control method of
By the first processor
When a tone of the drawbar organ is selected based on a user operation on the tone selection operator, the cumulative data held in one of the plurality of cumulative registers is stored in the memory. The cumulative data stored in the memory is read into one of the plurality of sound source channels.
When a certain tone other than the tone of the drawbar organ is selected by the tone selection operator, the cumulative data held in any of the cumulative registers is read, and the read cumulative data is read. The result data obtained by executing the software processing is held in one of the above-mentioned accumulation registers.
How to control an electronic musical instrument.
[Claim 8]
Each has a first processor, a memory for storing waveform data, and a plurality of multipliers for outputting adjusted data whose output level of generated data generated based on the waveform data read from the memory is adjusted. A plurality of accumulation registers for accumulating a plurality of sound source channels and the adjustment data output from the plurality of multipliers in the plurality of sound source channels and holding the adjustment data as accumulated data, and the plurality of accumulations. An electronic instrument equipped with a second processor that outputs a music signal corresponding to the cumulative data held in each register, and a tone selection operator that selects one from a plurality of tones including the tone of a drawbar organ. Is a program that runs on
By the first processor
When a tone of the drawbar organ is selected based on a user operation on the tone selection operator, the cumulative data held in one of the plurality of cumulative registers is stored in the memory. The cumulative data stored in the memory is read into one of the plurality of sound source channels.
When a certain tone other than the tone of the drawbar organ is selected by the tone selection operator, the cumulative data held in any of the cumulative registers is read, and the read cumulative data is read. The result data obtained by executing the software processing is held in one of the above-mentioned accumulation registers.
program.

10 ... Electronic musical instrument,
11 ... Keyboard part,
12 ... Key operation unit,
12A ... Tone selection controller,
12B ... Drawbar controller,
13 ... CPU,
14 ... ROM,
15 ... RAM,
16 ... Sound source section,
17 ... DAC,
18 ... Amp.
19 ... Speaker,
21-1 to 21-3 ... Sound source channel,
22 ... Mixer,
22A-22E ... (1st to 5th) cumulative registers,
23 ... DSP,
23A ... Interrupt generator for sampling synchronization,
23B, 23C ... adder,
23D ... Chorus processing unit,
23E ... Reverb processing unit,
23F ... Expand processing unit,
41 ... adder,
42 ... Accumulation section,
43 ... Selector,
44 ... Register,
51 ... Drive adjustment multiplier,
52 ... Shifter,
53 ... Clip processing unit (CLP),
54 ... Low-pass filter (LPF),
61 ... "WG Light Channel",
B ... Bus,
CH ... LSI chip.

Claims (8)

With the first processor
Memory for storing waveform data and
A plurality of sound source channels each having a plurality of multipliers for outputting adjusted data whose output level of the generated data generated based on the waveform data read from the memory is adjusted, and
A plurality of accumulation registers that accumulate the adjustment data output from each of the plurality of multipliers in the plurality of sound source channels and hold the adjustment data as accumulated data, and
A second processor that outputs a musical tone signal corresponding to the cumulative data held in each of the plurality of cumulative registers, and a second processor.
A tone selection controller that selects one from multiple tones, including the tone of the drawbar organ,
With
The first processor is
When a tone of the drawbar organ is selected based on a user operation on the tone selection operator, the cumulative data held in one of the plurality of cumulative registers is stored in the memory. The cumulative data stored in the memory is read into one of the plurality of sound source channels.
When a certain tone other than the tone of the drawbar organ is selected by the tone selection operator, the cumulative data held in any of the cumulative registers is read, and the read cumulative data is read. The result data obtained by executing the software processing is held in one of the above-mentioned accumulation registers.
Electronic musical instrument. The electronic musical instrument according to claim 1, wherein the software processing is an effect processing including a slicer. The electronic musical instrument according to claim 1, wherein the certain timbre is a timbre of a synthesizer. The second processor synchronizes between the two processors by transmitting an interrupt signal for causing the first processor to execute software processing when the certain tone color is selected. The electronic instrument according to any one of claims 1 to 3, comprising the above. The electronic musical instrument according to any one of claims 1 to 4, further comprising a drawbar operator that adjusts the volume of each foot when a musical instrument of a drawbar organ is selected by the tone selection operator. The first processor is
When a tone of the drawbar organ is selected based on a user operation on the tone selection operator, a multiplier of zero is set in a multiplier corresponding to an accumulation register other than any of the accumulation registers, and any of the above. The electronic musical instrument according to claim 5, wherein a value corresponding to a user operation on the drawbar operator is set in the multiplier corresponding to the accumulation register. Each has a first processor, a memory for storing waveform data, and a plurality of multipliers for outputting adjusted data whose output level of generated data generated based on the waveform data read from the memory is adjusted. A plurality of accumulation registers for accumulating a plurality of sound source channels and the adjustment data output from the plurality of multipliers in the plurality of sound source channels and holding the adjustment data as accumulated data, and the plurality of accumulations. An electronic instrument including a second processor that outputs a musical sound signal corresponding to the cumulative data held in each register, and a tone color selection operator that selects one from a plurality of tones including the tone of the drawbar organ. It is a control method of
By the first processor
When a tone of the drawbar organ is selected based on a user operation on the tone selection operator, the cumulative data held in one of the plurality of cumulative registers is stored in the memory. The cumulative data stored in the memory is read into one of the plurality of sound source channels.
When a certain tone other than the tone of the drawbar organ is selected by the tone selection operator, the cumulative data held in any of the cumulative registers is read, and the read cumulative data is read. The result data obtained by executing the software processing is held in one of the above-mentioned accumulation registers.
How to control an electronic musical instrument. Each has a first processor, a memory for storing waveform data, and a plurality of multipliers for outputting adjusted data whose output level of generated data generated based on the waveform data read from the memory is adjusted. A plurality of accumulation registers for accumulating a plurality of sound source channels and the adjustment data output from the plurality of multipliers in the plurality of sound source channels and holding the adjustment data as accumulated data, and the plurality of accumulations. An electronic instrument including a second processor that outputs a musical sound signal corresponding to the cumulative data held in each register, and a tone color selection operator that selects one from a plurality of tones including the tone of the drawbar organ. Is a program that runs on
By the first processor
When a tone of the drawbar organ is selected based on a user operation on the tone selection operator, the cumulative data held in one of the plurality of cumulative registers is stored in the memory. The cumulative data stored in the memory is read into one of the plurality of sound source channels.
When a certain tone other than the tone of the drawbar organ is selected by the tone selection operator, the cumulative data held in any of the cumulative registers is read, and the read cumulative data is read. The result data obtained by executing the software processing is held in one of the above-mentioned accumulation registers.
program.