JP6728846B2 - Performance signal generation device and performance signal generation method - Google Patents

Description

The present invention relates to a performance signal generation device and a performance signal generation method for generating a performance signal representing a performance sound simulating a sound of a keyboard instrument such as an acoustic piano.

Electronic musical instruments have been developed that electronically generate performance sounds that simulate the sounds of keyboard instruments such as acoustic pianos. Patent Document 1 describes a musical tone signal generation device that generates a musical tone signal of a tone color of a piano type natural musical instrument. The tone signal generation device includes a waveform memory, a string signal generation unit, a string resonance simulation unit, and a soundboard simulation unit. The waveform memory stores a plurality of waveform data obtained by recording the sound caused by the vibration of each string. In this case, when acquiring the waveform data corresponding to one string, the felt cloth is entangled with the other strings so that resonance of the other strings and vibration of the soundboard do not occur, and the soundboard has sufficient mass control. Sound is picked up by the microphone while the shaking gel is in contact. The waveform data represents the sound generated by the vibration of the string hit by the hammer. The vibration caused by the transmission of the vibration through the bridge or the pin (resonance of the string) and the change of the timbre due to the vibration of the soundboard. It contains almost no components such as (sound of the soundboard).

The string signal generation unit generates a string signal representing a musical sound generated by the vibration of the string of the pitch for which the pronunciation is instructed, based on the waveform data stored in the waveform memory. The string resonance simulating unit generates a resonance signal representing a resonance sound generated by the resonance of a plurality of strings. The soundboard signal generation unit reproduces the sound of the soundboard at the sound emission point of the soundboard by calculating the vibrations of the plurality of excitation points and the vibrations of the plurality of sound emission points on the soundboard. As a result, according to the tone signal generation device of Patent Document 1, it is possible to generate a tone that reflects the resonance of the strings of the piano and the reverberation of the soundboard.

On the other hand, Patent Document 2 describes an electronic keyboard instrument having three or more speakers. In the electronic keyboard instrument, a musical sound is recorded by a plurality of sound collecting means arranged at positions corresponding to the positions of a plurality of speakers, and each recorded musical sound has a plurality of channels corresponding to a plurality of sound collecting means. The waveform data set is stored in the waveform memory. Further, the waveform data of the sound (damper sound) added to the sound when the damper pedal is not operated is also stored. For the waveform data of the damper sound, for each key, the waveform data when the damper pedal is not operated (damper off state) and the waveform data when the damper pedal is operated (damper on state) are sampled, and the waveform data of the damper on state is sampled. It is obtained by subtracting the waveform data in the damper off state from the waveform data. Musical tone signals of a plurality of channels are supplied to a plurality of speakers based on normal waveform data of a plurality of channels corresponding to musical tones designated by a keystroke operation on the keyboard. In the case of damper on, a musical tone signal is supplied to a plurality of speakers based on the normal waveform data and the waveform data of the damper sound.

JP 2012-203280 A JP, 2009-244713, A

In the tone signal generation device described in Patent Document 1, it takes time and effort to acquire the waveform data that does not include the resonance sound of other strings and the reverberation component of the soundboard. In the electronic keyboard instrument described in Patent Document 2, the normal waveform data of the same number as the number of strings and the waveform data of the damper sound of the same number as the number of strings are acquired in advance for each channel. Therefore, it is necessary to acquire and store a lot of waveform data.

An object of the present invention is to provide a performance signal generation device and a performance signal generation method capable of expressing a sound spread of a keyboard instrument with a small amount of data and relatively easily in response to a sound generation instruction and a damper release instruction. It is to be.

(1) The performance signal generating device according to the first aspect of the invention is such that, with the performer as a reference, a first speaker arranged at the front left, a second speaker arranged at the front right, and the first speaker and the first speaker. First, second, and third performances that represent a performance sound that simulates the sound of a keyboard instrument having a plurality of strings and a plurality of keys corresponding to a third speaker disposed between the two speakers. A performance signal generating device for generating a signal, which corresponds to the first, second and third speakers, and is obtained by recording sounds of respective strings of a keyboard instrument. Storage means for storing the sampling waveform and first, second and third string signals from the first, second and third sampling waveforms for the relevant string in response to pronunciation instructions for the one or more strings And a string signal generating means for generating resonance signals of each string based on the first and second string signals and generating first and second resonance signals corresponding to the first and second speakers, respectively. , Resonance signal generating means for generating a resonance sound of each string based on the first and second resonance signals and generating a third resonance signal corresponding to the third speaker, and a damper release instruction for one or a plurality of strings. Responsive to the first string signal and a first resonance signal for the corresponding string to generate a first performance signal, and a second string signal and a second resonance signal for the corresponding string. And a performance signal generating means for generating a third performance signal based on the third string signal and a third resonance signal for the corresponding string. is there.

In the performance signal generation device, the first, second and third performance signals including the vibration sound of the instructed string and the resonance sound of the other string are generated based on the first, second and third sampling waveforms. Is generated. Based on the first, second and third performance signals, performance sounds including the vibration sound and resonance sound of the strings are output from the first, second and third speakers, respectively. Therefore, it is possible to express the sound spread of the keyboard instrument with a small amount of data and relatively easily in response to the sound generation instruction and the damper release instruction.

(2) The storage means corresponds to the fourth speaker arranged in front of the third speaker with respect to the performer, and the fourth sampling waveform obtained by recording the sound of each string of the keyboard instrument. And the string signal generating means further generates a fourth string signal from the fourth sampling waveform for the corresponding string in response to the pronunciation instruction for the one or more strings, and the resonance signal generating means , A fourth resonance signal indicating a resonance sound of each string based on the first and second resonance signals and corresponding to a fourth speaker, wherein the performance signal generating means is a damper for one or a plurality of strings. In response to the release instruction, a fourth performance signal corresponding to the fourth speaker may be further generated based on the fourth string signal and the fourth resonance signal for the corresponding string.

In this case, a performance sound including the instructed vibration sound of the string and the resonance sound of the other string is further output from the fourth speaker. Therefore, it is possible to express the further spread of the sound of the keyboard instrument without significantly increasing the data amount.

(3) The performance signal generating device shows the vibrating sound of the soundboard of the keyboard instrument based on the first and second resonance signals, and the first and second soundboards respectively corresponding to the first and second speakers. And a soundboard signal generation unit that generates a signal and indicates a vibrating sound of the soundboard based on the first and second soundboard signals and that generates a third soundboard signal corresponding to the third speaker. The performance signal generation means generates a first performance signal based on the first string signal and the first soundboard signal, and a second performance signal based on the second string signal and the second soundboard signal. The performance signal may be generated, and the third performance signal may be generated based on the third string signal and the third soundboard signal.

In this case, the performance sound further including the soundboard effect is output from each of the first, second and third speakers. As a result, it is possible to represent the spread of the sound closer to that of a keyboard instrument without increasing the amount of data.

(4) The storage means corresponds to a fourth speaker arranged in front of the third speaker with the performer as a reference, and a fourth sampling waveform obtained by recording the sound of each string of the keyboard instrument. And the string signal generation means further generates a fourth string signal from the fourth sampling waveform for the corresponding string in response to the pronunciation instruction for the one or more strings, and the resonance signal generation means , A fourth resonance signal that indicates a resonance sound of each string based on the first and second resonance signals and that corresponds to the fourth speaker, and the soundboard signal generation means generates the third soundboard signal. A vibrating sound of the soundboard and further generating a fourth soundboard signal corresponding to the fourth speaker, and the performance signal generating means based on the fourth string signal and the fourth soundboard signal. And the fourth performance signal may be generated.

In this case, the performance sound including the soundboard effect is further output from the fourth speaker. As a result, it is possible to represent the spread of the sound closer to that of a keyboard instrument without significantly increasing the amount of data.

(5) In the performance signal generating method according to the second aspect of the invention, the first speaker arranged on the left front side, the second speaker arranged on the right front side, and the first speaker and the First, second, and third performances that represent a performance sound that simulates the sound of a keyboard instrument having a plurality of strings and a plurality of keys corresponding to a third speaker disposed between the two speakers. A performance signal generating method for generating a signal, the first, second and third methods respectively corresponding to the first, second and third speakers, obtained by recording sounds of respective strings of a keyboard instrument. Storing a sampling waveform and, in response to pronunciation instructions for one or more strings, generating first, second, and third string signals from the first, second, and third sampling waveforms for that string. Generating the first and second resonance signals corresponding to the first and second loudspeakers and showing the resonance of each string based on the first and second string signals, respectively. Generating a third resonance signal indicating a resonance of each string based on the second resonance signal and corresponding to a third speaker; and responding to a damper release instruction for one or more strings, Generating a first performance signal based on the string signal and the first resonance signal for the corresponding string, and generating a second performance signal based on the second string signal and the second resonance signal for the corresponding string. Generating a performance signal and generating a third performance signal based on the third string signal and a third resonance signal for the corresponding string.

In the performance signal generation method, the first, second and third performance signals including the vibration sound of the instructed string and the resonance sound of the other string are generated based on the first, second and third sampling waveforms. Is generated. Based on the first, second and third performance signals, performance sounds including the vibration sound and resonance sound of the strings are output from the first, second and third speakers, respectively. Therefore, it is possible to express the sound spread of the keyboard instrument with a small amount of data and relatively easily in response to the sound generation instruction and the damper release instruction.

(6) An apparatus according to a third aspect of the invention is a first speaker arranged on the front left side, a second speaker arranged on the front right side, and a first speaker and a second speaker with respect to the performer. And first, second and third performance signals representing performance sounds simulating sounds of a keyboard instrument having a plurality of strings and a plurality of keys respectively corresponding to a third speaker arranged between In response to a pronunciation instruction for one or more strings, the first, second and third sampling waveforms respectively obtained by recording sounds of the corresponding strings of the keyboard instrument, First generation means for generating second and third string signals , and first and second means for indicating resonance of each string based on the first and second string signals and corresponding to the first and second speakers, respectively. It generates a second resonant signal, and a second generating means for generating a third resonance signal corresponding to the first and second based on the resonance signal indicates a resonance sound of each string and the third speaker, one Alternatively, in response to a damper release instruction for a plurality of strings, a first performance signal is generated based on the first string signal and a first resonance signal for the corresponding string, and the first performance signal is generated as a second string signal. A second performance signal is generated based on the second resonance signal for the string, and a third performance signal is generated based on the third string signal and the third resonance signal for the corresponding string . 3 generation means.

In the apparatus, first, second and third performance signals including a vibration sound of a designated string and a resonance sound of another string are generated based on the first, second and third sampling waveforms. It Based on the first, second and third performance signals, performance sounds including the vibration sound and resonance sound of the strings are output from the first, second and third speakers, respectively. Therefore, it is possible to express the sound spread of the keyboard instrument with a small amount of data and relatively easily in response to the sound generation instruction and the damper release instruction .

According to the present invention, it is possible to express the sound spread of the keyboard instrument with a small amount of data and relatively easily in response to the sounding instruction and the damper release instruction.

FIG. 3 is a block diagram showing a configuration of an electronic musical instrument including the performance signal generation device according to the first embodiment. It is a top view which shows the external appearance of the electronic musical instrument of FIG. It is a block diagram which shows the structure of the waveform memory and the sound source part of FIG. It is a block diagram which shows the structure of the effect provision part of FIG. 5 is a block diagram showing a configuration of a resonance signal generation unit of FIG. 4. FIG. 6 is a block diagram showing a configuration of one resonance signal generation circuit of FIG. 5. FIG. It is a block diagram which shows the structure of the soundboard signal generation part of FIG. FIG. 8 is a block diagram showing the configuration of one comb filter shown in FIG. 7. FIG. 8 is a block diagram showing a configuration of one all-pass filter shown in FIG. 7. 3 is a flowchart showing a performance signal generation method in the performance signal generation device 1 of FIG. 1. 3 is a flowchart showing a performance signal generation method in the performance signal generation device 1 of FIG. 1. It is a block diagram which shows the waveform memory of the performance signal generator which concerns on 2nd Embodiment, and the structure of the tone generator part 3. It is a block diagram which shows the structure of the effect provision part of the performance signal generation apparatus which concerns on 2nd Embodiment. It is a block diagram which shows the structure of the effect provision part of the performance signal generation apparatus which concerns on 3rd Embodiment. It is a block diagram which shows the structure of the effect provision part of the performance signal generation apparatus which concerns on 4th Embodiment.

Hereinafter, a performance signal generation device and a performance signal generation method according to an embodiment of the present invention will be described in detail with reference to the drawings.

[1] First Embodiment (1) Configuration of Electronic Musical Instrument FIG. 1 is a block diagram showing a configuration of an electronic musical instrument including a performance signal generation device according to a first embodiment. FIG. 2 is a plan view showing the appearance of the electronic musical instrument shown in FIG. The performance signal generation device according to the present embodiment generates a performance sound that simulates the sound of an acoustic piano.

First, as shown in FIG. 2, the electronic musical instrument 100 according to the present embodiment includes four speakers 5L, 5R, 5C, 5B, a keyboard 60 and a damper pedal 70. The keyboard 60 has a plurality of keys, for example 88 keys. In an acoustic piano, a plurality of strings are provided corresponding to a plurality of keys. With the performer 80 as a reference, the speaker 5L is arranged on the left front side of the keyboard 60, and the speaker 5R is arranged on the right front side of the keyboard 60. The speaker 5C is arranged in front of the center of the keyboard 60 between the speakers 5L and 5R, and the speaker 5B is arranged further in front of the speaker 5C. Therefore, the speakers 5L, 5R, 5C, and 5B are located on the left front side, the right front side, the center front side, and the center front side (hereinafter, referred to as the back) of the performer 80, respectively.

As shown in FIG. 1, the electronic musical instrument 100 includes a performance signal generation device 1 connected to a bus 13 and a sound system 5. The performance signal generation device 1 includes a waveform memory 2, a sound source unit 3, and an effect imparting unit 4. The waveform memory 2 of the performance signal generator 1 is composed of a storage medium such as a semiconductor memory, a hard disk, an optical disk, a magnetic disk or a memory card. The waveform memory 2, the tone generator section 3, and the effect imparting section 4 have four signal channels for generating four performance signals to be given to the speakers 5L, 5R, 5C, 5B. Hereinafter, the four signal channels corresponding to the speakers 5L, 5R, 5C, and 5B will be referred to as the left channel, the right channel, the center channel, and the back channel, respectively. The configurations and operations of the waveform memory 2, the sound source unit 3, and the effect imparting unit 4 will be described later. The sound system 5 includes the speakers 5L, 5R, 5C and 5B of FIG.

The electronic musical instrument 100 includes a performance operator 6, a setting operator 7, a display 8, a CPU (central processing unit) 9, a ROM (read only memory) 10, a RAM (random access memory) 11, and a performance operator 6, which are connected to a bus 13. A communication I/F (interface) 12 is further provided. The performance operator 6 includes the keyboard 60 and the damper pedal 70 shown in FIG. When the player 80 operates the keyboard 60, a sounding instruction is input. The pronunciation instruction includes pitch and velocity (intensity). When the performer 80 operates the damper pedal 70, a damper release instruction is input. The setting operator 7 is used to adjust the volume, turn on/off the power supply, and set tone color parameters. Various operation screens are displayed on the display unit 8.

The ROM 10 is composed of, for example, a non-volatile memory and stores a system program. The RAM 11 is, for example, a volatile memory, is used as a work area of the CPU 9, and temporarily stores various data. The CPU 9 gives various instructions to the performance signal generator 1 based on the operations of the performance operator 6 and the setting operator 7. The CPU 9, the ROM 10 and the RAM 11 form a computer.

The performance signal generation device 1 may be configured by hardware such as an electronic circuit, may be configured by software such as a performance signal generation program, or may be configured by both hardware and software. For example, the sound source unit 3 and the effect imparting unit 4 may be configured by a dedicated sound source LSI (Large Scaled Integrated circuit) and a DSP (Digital signal Processor) for effect imparting. Further, the sound source unit 3 and the effect imparting unit 4 may be integrally configured by a custom LSI. When at least a part of the performance signal generation device 1 is realized by software, the ROM 10 stores a computer program such as a performance signal generation program. In this case, the CPU 9 executes the performance signal generation program stored in the ROM 10 on the RAM 11 to perform the performance signal generation process. An external device such as an external storage device may be connected to the bus 13 via the communication I/F (interface) 12.

(2) Waveform memory 2 and sound source unit 3
FIG. 3 is a block diagram showing the configurations of the waveform memory 2 and the sound source unit 3 of FIG. The waveform memory 2 stores a plurality of waveform data sets 21 corresponding to a plurality of strings of an acoustic piano. For example, 88 waveform data sets 21 corresponding to 88 strings are stored. Each waveform data set 21 includes four waveform data 22L, 22R, 22C, 22B. The waveform data 22L, 22R, 22C, and 22B are recorded at the front left position, the front right position, the center front position, and the back position of the keyboard when one key of the acoustic piano is operated (keystroke). It represents a sampling waveform of the generated sound and is composed of a plurality of sample values. The waveform data 22L, 22R, 22C, and 22B correspond to the left channel, right channel, center channel, and back channel, respectively.

The sound source unit 3 includes a plurality of sound generation channels 31 and four adders 32L, 32R, 32C and 32B. For example, 64 tone generation channels 31 are provided. The four adders 32L, 32R, 32C and 32B correspond to the left channel, the right channel, the center channel and the back channel, respectively. In response to a sounding instruction input from the keyboard 60, one or more sounding channels 31 are activated. For example, when the performer 80 operates one key, the four tone generation channels 31 corresponding to the left channel, the right channel, the center channel and the back channel are activated. When the player 80 operates three keys at the same time, 12 sounding channels 31 are activated. Each tone generation channel 31 includes a waveform reading section 301, a filter 302, and a volume control section 303. The waveform reading unit 301 reads one waveform data from the waveform data set 21 corresponding to the pitch specified by the sounding instruction. The filter 302 performs filter processing for imparting a timbre change to the waveform data read by the waveform reading unit 301. The volume controller 303 controls the time change of the amplitude of the waveform data.

Corresponding to the left channel, the right channel, the center channel and the back channel, the sample values of the waveform data output from the four sound generation channels 31 are given to the adders 32L, 32R, 32C and 32B, respectively. Each of the adders 32L, 32R, 32C and 32B adds the sample values output from one or a plurality of tone generation channels 31. For example, when three keys of the keyboard 60 are simultaneously operated, the sample values from the three sound generation channels 31 are given to the respective adders 32L, 32R, 32C and 32B. The adders 32L, 32R, 32C and 32B output the addition results as string signals SL, SR, SC and SB of the left channel, the right channel, the center channel and the back channel, respectively. The string signals SL, SR, SC, SB include the vibration sound of the acoustic piano string corresponding to the operated key and the component of the vibration sound of the acoustic piano soundboard due to the vibration of the string (soundboard effect).

(3) Effect imparting section 4
FIG. 4 is a block diagram showing the configuration of the effect imparting section 4 of FIG. The effect imparting section 4 includes a resonance signal generating section 41, a soundboard signal generating section 42, a plurality of adders 43L, 43R, 43C, 43B, 44L, 44R, 44C, 44B, 45, 46, and a plurality of multipliers 47L, 47R. , 47C, 47B, 48L, 48R, 48C, 48B, delay circuits 51, 52, 53 and a space system effect imparting circuit 54. The calculation in the effect imparting section 4 is performed in a sample unit of the string signals SL, SR, SC, SB at a predetermined sampling frequency.

The effect imparting section 4 is supplied with the string signals SL, SR, SC and SB of the left channel, the right channel, the center channel and the back channel outputted from the sound source section 3 of FIG. The resonance signal generation unit 41 generates a resonance signal RL for the left channel and a resonance signal RR for the right channel based on the string signals SL and SR. The adder 45 adds the resonance signals RL and RR and outputs the addition result as the resonance signal RC of the central channel. The delay circuit 51 delays the resonance signal RC to generate the back channel resonance signal RB. The multipliers 47L, 47R, 47C, 47B multiply the resonance signals RL, RR, RC, RB by predetermined coefficients, and output the multiplication results as resonance signals RL1, RR1, RC1, RB1. Since the resonance signals RL and RR are generated based on the string signals SL and SR, the resonance signals RC1 and RB1 are generated based on the string signals SL and SR.

The adder 43L adds the resonance signal RL1 to the string signal SL and outputs the addition result as a performance signal PL1 for the left channel. The adder 43R adds the resonance signal RR1 to the string signal SR and outputs the addition result as a performance signal PR1 for the right channel. The adder 43C adds the resonance signal RC1 to the string signal SC and outputs the addition result as the performance signal PC1 of the central channel. The adder 43B adds the resonance signal RB1 to the string signal SB and outputs the addition result as the performance signal PB1 of the back channel.

The soundboard signal generation unit 42 generates a soundboard signal BL for the left channel and a soundboard signal BR for the right channel based on the performance signals PL1 and PR1. The adder 46 adds the soundboard signals BL and BR and outputs the addition result as the soundboard signal BC of the central channel. The delay circuit 52 delays the soundboard signal BC to generate the soundboard signal BB of the back channel. The multipliers 48L, 48R, 48C, 48B multiply the soundboard signals BL, BR, BC, BB by predetermined coefficients, and output the multiplication results as soundboard signals BL1, BR1, BC1, BB1.

The adder 44L adds the soundboard signal BL1 to the performance signal PL1 and outputs the addition result as a performance signal PL2 for the left channel. The adder 44R adds the soundboard signal BR1 to the performance signal PR1 and outputs the addition result as a performance signal PR2 for the right channel. The adder 44C adds the soundboard signal BC1 to the performance signal PC1 and outputs the addition result as the performance signal PC2 of the central channel. The adder 44B adds the soundboard signal BB1 to the performance signal PB1 and outputs the addition result to the delay circuit 53. The delay circuit 53 delays the addition result output from the adder 44B to generate the performance signal PB2 of the back channel. Since the soundboard signals BL and BR are generated based on the string signals SL and SR, the soundboard signals BC and BB are generated based on the string signals SL and SR.

The spatial system effect imparting circuit 54 imparts a spatial system effect such as reverberation to the performance signals PL2, PR2, PC2, PB2, and the performance signals PL, PR, PC, PB of the left channel, the right channel, the center channel and the back channel. Is output. If the spatial system effect is not required, the spatial system effect applying circuit 54 may not be provided.

A damper control signal DAM is given to the resonance signal generation unit 41 and the soundboard signal generation unit 42. The damper control signal DAM represents a damper operation instruction indicating that the damper of the acoustic piano contacts each string or a damper release instruction indicating that the damper is separated from each string. When the damper pedal 70 of FIG. 2 is operated, a damper release instruction is issued for all strings. Also, when one or more keys are operated, a damper cancellation instruction is issued for the string corresponding to the operated key. When the damper pedal 70 is not operated and one or a plurality of keys are not operated, the damper operation instruction is issued for the string corresponding to the not operated key. When the damper pedal 70 is not operated and one or a plurality of operated keys are returned, a damper operation instruction is issued for the string corresponding to the returned key. The damper control signal DAM includes, as will be described later, damper control signals D _{1 to} D _n provided to the resonance signal generator 41 and a damper control signal D ₀ provided to the soundboard signal generator 42. The damper control signals D _{0 to} D _n switch between “0” and “1”. "0" represents a damper operation instruction, and "1" represents a damper release instruction. Each of the damper control signals D _{1 to} D _n corresponds to each string of the acoustic piano and is switched to “0” or “1” depending on the state of the performance operator 6 in FIG. 1. The damper control signal D ₀ corresponds to a soundboard of an acoustic piano, and may be always set to “1” regardless of activation and deactivation of the damper for each string. When released (when at least one of the damper control signals D _{1 to} D _n is “1”), it may be “1”, and the damper is released for all strings as when the damper pedal 70 is operated. If it is (when all of the damper control signals D _{1 to} D _n are “1”), it may become “1”.

FIG. 5 is a block diagram showing the configuration of the resonance signal generator 41 of FIG. The resonance signal generation unit 41 of FIG. 5 includes n resonance signal generation circuits 410 _{1 to} 410 _n . n is an integer corresponding to the number of strings of the acoustic piano, and is 88, for example. The resonance signal generation circuits 410 _{1 to} 410 _n correspond to the 1st to nth strings of the acoustic piano. The resonance signal generation circuits 410 _{1 to} 410 _n are supplied with the damper control signals D _{1 to} D _n , respectively. Resonance signal generating circuit ₄₁₀ 1 - 410 _n are string signal SL, and generates a resonance signal _RR 1 _{~RR n} of resonance signals _RL 1 _{~RL n} and right channels of the left channel on the basis of the SR. The resonance signals RL _{1 to} RL _n and RR _{1 to} RR _n represent resonance sounds of n strings of the acoustic piano. The resonance signal generator 41 further includes n adders 420 and n adders 430. Adder 420, a resonance signal generating circuit ₄₁₀ 1 - 410 n pieces of resonance signals generated by the _{n RL} 1 _{~RL n} and string signals SL adds and outputs the addition result as resonance signals RL of the left channel. Adder 430, a resonance signal generating circuit ₄₁₀ 1 - 410 n pieces of resonance signals generated by the _{n RR} 1 _{~RR n} and string signal SR are added, and outputs the addition result as resonance signal RR of the right channel.

FIG. 6 is a block diagram showing the configuration of one resonance signal generation circuit 410 _i shown in FIG. Here, i is one of 1 to n. The resonance signal generation circuit 410 _{i in} FIG. 6 includes a reception circuit 411, a localization setting circuit 412, an adder 413, a delay circuit 414, a filter circuit 415, and a multiplier 416. The resonance signal generation circuit 410 _i corresponds to the i-th string of the acoustic piano. The receiving circuit 411 includes multipliers 411L and 411R. The multipliers 411L and 411R multiply the string signals SL and SR by the value of the damper control signal D _i , and output the multiplication result. Thus, when the damper control signal D _i is “0” (damper operation instruction), the string signals SL and SR are not input to the adder 413, and when the damper control signal D _i is “1” (damper cancellation instruction). , String signals SL and SR are input to the adder 413.

The adder 413 adds the multiplication results of the multipliers 411L and 411R and the multiplication result of the multiplier 416 to be described later, and outputs the addition result. The delay circuit 414 is composed of a plurality of delay elements connected in series, and delays the sample value indicating the addition result of the adder 413 for a predetermined time. The filter circuit 415 includes, for example, an all-pass filter (all-pass filter). The multiplier 416 multiplies the sample value output from the filter circuit 415 by the value of the damper control signal D _i , and outputs the multiplication result. The adder 413, the delay circuit 414, the filter circuit 415, and the multiplier 416 constitute a comb filter (comb filter), and generate a resonance signal representing the resonance sound of the corresponding string of the acoustic piano. The delay time of the delay circuit 414 is set according to the natural resonance frequency of the corresponding string. When the damper control signal D _i is “0” (damper operation instruction), the sample value is not input from the filter circuit 415 to the adder 413. As a result, no resonance signal is generated. When the damper control signal D _i is “1” (damper cancellation instruction), the sample value is input from the filter circuit 415 to the adder 413. Thereby, a resonance signal is generated.

The multipliers 412L and 412R of the localization setting circuit 412 are connected to different delay elements of the delay circuit 414. The multipliers 412L and 412R multiply the sample values output from the connected delay elements by a predetermined coefficient, and output the multiplication results as resonance signals RL _i and RR _i . The coefficients of the multipliers 412L and 412R are set based on the positions of the corresponding strings of the acoustic piano. Delay element resonance signal generating circuit ₄₁₀ 1 - 410 _n multiplier 412L, 412R are respectively connected in FIG 5 differs with the corresponding chord of the acoustic piano. Thus, resonance signals _RL 1 _~RL n output from the resonance signal generating circuit _{410 1 ~410 n, RR 1 ~RR} n varies by corresponding string.

FIG. 7 is a block diagram showing the configuration of the soundboard signal generation unit 42 of FIG. The soundboard signal generation unit 42 of FIG. 7 includes multipliers 421L and 421R, a plurality of adders 422, 441L, 441R, 461L and 461R, a plurality of comb filters 430 and a plurality of all-pass filters 450L and 450R.

The multipliers 421L and 421R multiply the performance signals PL1 and PR1 by the value of the damper control signal D ₀ , and output the multiplication result. Therefore, when the damper control signal D ₀ is “0” (damper operation instruction), the performance signals PL1 and PR1 are not input to the adder 422, and when the damper control signal D ₀ is “1” (damper cancellation instruction). , Performance signals PL1 and PR1 are input to the adder 422. The adder 422 adds the multiplication results of the multipliers 421L and 421R and outputs the addition result as a synthesized performance signal PLR.

Each comb filter 430 outputs a left channel reverberation signal ReL and a right channel reverberation signal ReR based on the synthesized performance signal PLR. The adder 441L adds the reverberation signals ReL of the plurality of comb filters 430 and outputs the addition result as a reverberation signal REL0. The reverberation signal REL0 sequentially passes through a plurality of all-pass filters 450L and is output as the left channel reverberation signal REL. The adder 441R adds the reverberation signals ReR of the plurality of comb filters 430 and outputs the addition result as a reverberation signal RER0. The reverberation signal RER0 sequentially passes through a plurality of all-pass filters 450R and is output as a right channel reverberation signal RER.

The adder 461L adds the reverberation signal REL output from the final-stage all-pass filter 450L to the performance signal PL1 and outputs the addition result as a soundboard signal BL. The adder 461R adds the reverberation signal RER output from the final-stage all-pass filter 450R to the performance signal PR1 and outputs the addition result as a soundboard signal BR.

FIG. 8 is a block diagram showing the configuration of one comb filter 430 shown in FIG. The comb filter 430 of FIG. 8 includes an adder 431, a delay circuit 432, and a multiplier 433. The adder 431 adds the multiplication result of the multiplier 433 to the synthetic performance signal PLR. The delay circuit 432 includes a plurality of delay elements connected in series, and delays the sample value indicating the addition result of the adder 431 for a predetermined time. The multiplier 433 multiplies the sample value output from the delay circuit 432 by a predetermined attenuation coefficient. Sample values output from two different delay elements of the delay circuit 432 are output as reverberation signals ReL and ReR.

FIG. 9 is a block diagram showing the configuration of one all-pass filter 450L shown in FIG. The all-pass filter 450L in FIG. 9 includes adders 451, 452, a delay circuit 453, and multipliers 454, 455, 456. The adder 451 adds the multiplication result of the multiplier 456 to the reverberation signal REL0. The delay circuit 453 delays the addition result of the adder 451 for a fixed time. The multiplier 455 multiplies the sample value output from the delay circuit 453 by a predetermined coefficient. The multiplier 454 multiplies the reverberation signal REL0 by a predetermined attenuation coefficient. The adder 452 adds the multiplication result of the multiplier 454 and the multiplication result of the multiplier 455. The multiplier 456 multiplies the addition result of the adder 452 by a predetermined attenuation coefficient. The addition result of the adder 452 is output as the reverberation signal REL1. The configuration of all-pass filter 450R in FIG. 7 is similar to the configuration of all-pass filter 450L in FIG.

(4) Performance Signal Generation Method FIGS. 10 and 11 are flowcharts showing a performance signal generation method in the performance signal generation device 1 of FIG. Hereinafter, for the sake of simplicity, the waveform data 22L, 22R, 22C, and 22B of the left channel, right channel, center channel, and back channel will be referred to as left, right, center, and back waveform data, respectively. The string signals SL, SR, SC, and SB of the channel, the center channel, and the back channel are called left, right, center, and back string signals, respectively. Further, the resonance signals RL, RR, RC, and RB of the left channel, the right channel, the center channel, and the back channel are referred to as the left, right, center, and back resonance signals, respectively, of the left channel, the right channel, the center channel, and the back channel. The soundboard signals BL, BR, BC, BB are referred to as left, right, center and inner soundboard signals, respectively.

In response to an instruction from the CPU 9, the tone generator 3 generates left, right, center, and back string signals from the left, right, center, and back waveform data of the corresponding string (step S1). Specifically, the CPU 9 detects the state of the performance operator 6 via the bus 13 and gives a sound generation start instruction or a sound generation stop instruction to the sound source section 3 in accordance with the detected state. The sound source unit 3 performs the sound generation start processing in response to the sound generation start instruction, and performs the sound generation stop processing in response to the sound generation stop instruction. The sound source unit 3 continues sounding from the start of sounding to the stop of sounding. While the sound generation start instruction is given to one or a plurality of strings and the sound generation is continued, the sound source unit 3 selects the left, right, or center of the corresponding string among the waveform data stored in advance in the waveform memory 2. And the back waveform data are read out, and the left, right, center, and back string signals are generated from the left, right, center, and back waveform data for the corresponding string.

Next, the CPU 9 detects the state of the performance operator 6 via the bus 13, and supplies the damper control signal DAM to the effect imparting section 4 according to the detected state. The effect imparting section 4 acquires the damper control signal DAM supplied from the CPU 9 (step S2). In the effect imparting unit 4, the damper control signals D _{1 to} D _n of the damper control signal DAM are supplied to the resonance signal generation unit 41, and the damper control signal D ₀ is supplied to the soundboard signal generation unit 42. When a damper release instruction for one or a plurality of strings is given, the damper control signal D _i representing the damper release instruction “1” is supplied to the resonance signal generation circuit 410 _i for the corresponding string of the resonance signal generation unit 41. ..

Next, the resonance signal generation unit 41 generates left and right resonance signals from the left and right string signals, respectively (step S3). In the resonance signal generation unit 41, the left and right string signals are input to the resonance signal generation circuit 410 _i to which the damper release instruction “1” is supplied. Thereby, the resonance sound grows and is generated, or the resonance sound does not grow and is not generated according to each characteristic of the resonance signal generation circuit 410 _i .

The effect imparting unit 4 also generates a central resonance signal from the left and right resonance signals (step S4), and generates an inner resonance signal from the central resonance signal (step S5).

For example, in an acoustic piano, when a damper pedal is operated after a key with a certain pitch is pressed, among all the strings of the acoustic piano, the string corresponding to the harmonic overtone of that pitch resonates. Therefore, in the present embodiment, when the damper pedal 70 is operated after the key of a certain pitch is operated, the sound source section 3 first emits a string signal of the corresponding pitch. After that, the damper control signals D _{1 to} D _n indicating the damper release instruction “1” are supplied to all the resonance signal generation circuits 410 _{1 to} 410 _n (see FIG. 5) according to the operation of the damper pedal 70. Therefore, the string signal of the pitch is input to all the resonance signal generation circuits 410 _{1 to} 410 _n . Each resonance signal generation circuit 410 _i has a resonance characteristic including a delay circuit 414 corresponding to the corresponding string. Therefore, the resonance sound grows in the resonance signal generation circuit 410 _i corresponding to the overtone of the input string signal, and the resonance sound does not grow in the resonance signal generation circuit 410 _i not corresponding to the overtone. In this way, the resonance signal generation circuit 410 _i (see FIG. 5) corresponding to the overtone of the pitch generates left and right resonance signals, and the center and inner resonance signals are generated based on the left and right resonance signals. Is generated. Further, when one key is operated while another key is operated and the pitch of one key is a harmonic of the pitch of another key, the resonance signal generation circuit 410 corresponding to the harmonic. _i (see FIG. 5) generates left and right resonance signals, and central and inner resonance signals are generated based on the left and right resonance signals. After that, the effect imparting unit 4 adds the left, right, center, and inner resonance signals to the left, right, center, and inner string signals, respectively (step S6).

The effect imparting section 4 generates left and right soundboard signals from the added left and right string signals (step S7). Further, the soundboard signal generation unit 42 generates a central soundboard signal from the left and right soundboard signals (step S8), and generates an inner soundboard signal from the central soundboard signal (step S9).

In an acoustic piano, the resonating string vibration is transmitted to the soundboard through the bridge. As a result, a vibrating sound of the soundboard based on the resonance sound is generated. Therefore, in the present embodiment, the soundboard signal is generated based on the resonance signal corresponding to the overtone of the pitch of the operated key. After that, the effect imparting unit 4 adds the left, right, center, and back soundboard signals to the left, right, center, and back string signals, respectively (step S10). The effect imparting section 4 outputs the left, right, center, and back string signals after addition as the left, right, center, and back performance signals, respectively (step S11). As a result, a string signal obtained by adding the left resonance signal, the right resonance signal, the center resonance signal, and the soundboard signal is output as a performance signal. After that, the effect imparting unit 4 returns to step S1.

When the function of the performance signal generation device 1 is realized by a computer program, the performance signal generation program is stored in the ROM 10. The performance signal generation method shown in FIGS. 10 and 11 is performed by the CPU 9 executing the performance signal generation program on the RAM 11. In this case, the performance signal generation program includes steps S1 to S11 of FIGS.

The performance signal generation program may be provided in a form stored in a computer-readable recording medium and installed in the ROM 10 or an external storage device. When the communication I/F 12 is connected to the communication network, the performance signal generation program distributed from the server connected to the communication network may be installed in the ROM 10 or the external storage device.

(5) Effects of the First Embodiment According to the performance signal generation device 1 of the first embodiment, the string signals SL, SR, SC, SB representing the vibration sound of the strings of the acoustic piano are waveform data 22L. , 22R, 22C, 22B, and resonance signals RL, RR, which represent the resonance sounds of the strings, are generated based on the string signals SL, SR, and resonance signals RC, RB, which represent the resonance sounds of the strings, are resonance signals. It is generated based on RL and RR. Further, soundboard signals BL and BR representing the soundboard effect are generated based on the string signals SL and SR and the resonance signals RL and RR, and soundboard signals BC and BB representing the soundboard effect are converted into soundboard signals BL and BR. It is generated based on. No complex calculations are required to generate the resonance signals RL, RR, RC, RB. Therefore, it becomes possible to express the sound spread of the acoustic piano with a small amount of data and relatively easily in response to the sound generation instruction and the damper release instruction.

[2] Second Embodiment FIG. 12 is a block diagram showing the configurations of the waveform memory 2 and the tone generator section 3 of the performance signal generating apparatus according to the second embodiment. FIG. 13 is a block diagram showing the configuration of the effect imparting section 4 of the performance signal generating apparatus according to the second embodiment. The performance signal generation device according to the second embodiment differs from the performance signal generation device according to the first embodiment in the following points.

The performance signal generation device according to the second embodiment has three signal channels, a left channel, a right channel, and a center channel. Therefore, each waveform data set 21 stored in the waveform memory 2 of FIG. 12 includes the waveform data 22L of the left channel, the waveform data 22R of the right channel, and the waveform data 22C of the center channel, and the waveform data of the back channel of FIG. 22B is not included. Further, the sound source unit 3 in FIG. 12 includes three adders 32L, 32R, 32C corresponding to the left channel, the right channel, and the center channel, and does not include the adder 32B corresponding to the back channel in FIG. Further, the effect imparting section 4 of FIG. 13 does not include the adders 43B and 44B, the multipliers 47B and 48B and the delay circuits 51, 52 and 53 of FIG. The performance signal generation method according to the second embodiment does not generate the back string signal, the back resonance signal, the back soundboard signal, and the back performance signal in the flowcharts of FIGS. 10 and 11.

According to the performance signal generating device of the second embodiment, the string signals SL, SR, SC are generated based on the waveform data 22L, 22R, 22C, and the resonance signals RL, RR are generated based on the string signals SL, SR. And the resonance signal RC is generated based on the resonance signals RL and RR. The soundboard signals BL and BR are generated based on the string signals SL and SR and the resonance signals RL and RR, and the soundboard signal BC is generated based on the soundboard signals BL and BR. Therefore, in response to the sound generation instruction and the damper release instruction, the spread of the sound of the acoustic piano can be expressed with a smaller amount of data and with three signal channels relatively easily.

[3] Third Embodiment FIG. 14 is a block diagram showing the configuration of the effect imparting section 4 of the performance signal generating apparatus according to the third embodiment. The performance signal generation device according to the third embodiment differs from the performance signal generation device according to the first embodiment in the following points.

14 does not include the adders 43L and 43R and the multipliers 47L and 47R shown in FIG. As a result, the resonance signals RL and RR generated by the resonance signal generation unit 41 are not added to the string signals SL and SR and are given to the soundboard signal generation unit 42. The soundboard signal generation unit 42 generates soundboard signals BL and BR based on the resonance signals RL and RR, respectively. In this case, the soundboard signal BL includes a left channel resonance signal RL component and a soundboard signal component, and the soundboard signal BR includes a right channel resonance signal RR component and a soundboard signal component. The adder 44L adds the soundboard signal BL1 output from the multiplier 48L to the string signal SL, and the adder 44R adds the soundboard signal BR1 output from the multiplier 48R to the string signal SR.

According to the performance signal generation device of the third embodiment, the resonance signals RL and RR are generated based on the string signals SL and SR, and the resonance signals RC and RB are generated based on the resonance signals RL and RR. .. The soundboard signals BL and BR are generated based on the resonance signals RL and RR, and the soundboard signals BC and BB are generated based on the soundboard signals BL and BR. Therefore, it becomes possible to express the sound spread of the acoustic piano with a small amount of data and relatively easily in response to the sound generation instruction and the damper release instruction. In the third embodiment, the circuit configuration can be made simpler than in the first embodiment.

[4] Fourth Embodiment FIG. 15 is a block diagram showing the configuration of the effect imparting section 4 of the performance signal generation device according to the fourth embodiment. The performance signal generation device according to the fourth embodiment differs from the performance signal generation device according to the third embodiment in the following points.

The effect imparting unit 4 of FIG. 15 does not include the adders 43C and 43B, the multipliers 47C and 47B, and the delay circuit 51 of FIG. In this case, the soundboard signal BL includes a left channel resonance signal RL component and a soundboard signal component, and the soundboard signal BR includes a right channel resonance signal RR component and a soundboard signal component. Therefore, the soundboard signal BC output from the adder 46 is the soundboard signal of the central channel obtained by adding the resonance signal component of the central channel and the soundboard signal component obtained by adding the components of the resonance signals RL and RR. Contains signal components. Further, the soundboard signal BB output from the delay circuit 52 is the back channel obtained by delaying the resonance signal component of the back channel obtained by delaying the resonance signal component of the center channel and the soundboard signal component of the center channel being delayed. Includes the soundboard signal component of. The adder 44C adds the soundboard signal BC1 output from the multiplier 48C to the string signal SC, and the adder 44B adds the soundboard signal BB1 output from the multiplier 48B to the string signal SB.

According to the performance signal generation device of the fourth embodiment, the resonance signals RL and RR are generated based on the string signals SL and SR, and the soundboard signals BL and BR are generated based on the resonance signals RL and RR. , Soundboard signals BC and BB are generated based on the soundboard signals BL and BR. Therefore, it becomes possible to express the sound spread of the acoustic piano with a small amount of data and relatively easily in response to the sound generation instruction and the damper release instruction. According to the fourth embodiment, the circuit configuration can be further simplified as compared with the first and third embodiments.

[5] Other Embodiments In the performance signal generators according to the first to fourth embodiments, the soundboard signal generation unit 42 may not be provided when it is not necessary to obtain the soundboard effect. In this case, steps S7 to S10 in the flowchart of FIG. 11 are unnecessary.

Further, in the performance signal generating apparatus according to the third and fourth embodiments, the configuration related to the back channel may not be provided. In this case, a performance signal generation device for three signal channels is realized.

Note that, generally, an acoustic piano is configured such that, depending on the musical range, when a single key is operated, a plurality of strings tuned to substantially the same pitch are struck simultaneously. That is, a plurality of strings (double strings) are provided corresponding to a single key. In the above-described first to fourth embodiments, the plurality of waveform data sets 21 and the plurality of resonance signal generation circuits 410 _{1 to} 410 _n are provided by the number of strings, but the present invention is not limited to this and is not limited to this. It is also applicable when a double string is provided corresponding to one key. For example, the waveform data set 21 and the resonance signal generation circuit 410 _i are provided so as to correspond to the respective strings forming a set of double strings, and a plurality of waveforms corresponding to the double strings are provided in response to the operation of a single key. The data set 21 and the plurality of resonance signal generation circuits 410 _i may be used at the same time. Alternatively, the waveform data set 21 may be composed of waveform data (sampling waveform) obtained by simultaneously recording multiple string sounds corresponding to a single pitch, so as to correspond to a single pitch. One resonance signal generation circuit 410 _i may be provided.

In the first to fourth embodiments, the case where the present invention is applied to the performance signal generation device and the performance signal generation method for simulating the sound of an acoustic piano as a keyboard instrument having a plurality of strings and a plurality of keys has been described. However, keyboard instruments are not limited to acoustic pianos. The present invention can be applied to a performance signal generation device and a performance signal generation method that simulate the sound of another keyboard instrument such as a harpsichord.

[6] Correspondence between each component of the claims and each part of the embodiment Hereinafter, an example of correspondence between each component of the claims and each part of the embodiment will be described, but the present invention is limited to the following examples. Not done. As each component in the claims, various other components having the configurations or functions described in the claims can be used.

In the above-described embodiment, the speakers 5L, 5R, 5C, 5B are examples of the first, second, third and fourth speakers, the waveform memory 2 is an example of storage means, and the sound source unit 3 is a string signal. An example of the generation means, the resonance signal generation unit 41 is an example of the resonance signal generation means, the soundboard signal generation unit 42 is an example of the soundboard signal generation means, and the adders 43L, 43R, 43C, 43B, 44L. , 44R, 44C, 44B are examples of performance signal generating means. Further, the waveform data 22L, 22R, 22C and 22B are examples of the first, second, third and fourth sampling waveforms respectively, and the string signals SL, SR, SC and SB are the first, second and third sampling signals. And the fourth string signal, the resonance signals RL, RR, RC, RB being examples of the first, second, third and fourth resonance signals, and the soundboard signals BL, BR, BC, BB. Are examples of the first, second, third and fourth soundboard signals, and the performance signals PL, PR, PC and PB are examples of the first, second, third and fourth performance signals.

INDUSTRIAL APPLICABILITY The present invention can be used for generation of performance signals and the like.

DESCRIPTION OF SYMBOLS 1... Performance signal generation device, 100... Electronic musical instrument, 2... Waveform memory, 3... Sound source part, 4... Effect imparting part, 5... Sound system,... 5L, 5R, 5C, 5B... Speakers, 22L, 22R, 22C, 22B... Waveform data, 21... Waveform data set, 31... Sound generation channel, 41... Resonance signal generation unit, 42... Soundboard signal generation unit, 60... Keyboard, 70... Damper pedal, 80... Performer, 410i, 410 _{1 to} 410n ...Resonance signal generation circuit

Claims (6)

With respect to the performer, a first speaker arranged on the left front side, a second speaker arranged on the right front side, and a third speaker arranged between the first speaker and the second speaker. A performance signal generation device for generating first, second and third performance signals representing a performance sound simulating a sound of a keyboard instrument having a plurality of strings and a plurality of keys corresponding to respective speakers.
Storage means for storing the first, second and third sampling waveforms respectively obtained by recording the sounds of the strings of the keyboard instrument corresponding to the first, second and third speakers,
String signal generating means for generating first, second, and third string signals from the first, second, and third sampling waveforms for the corresponding string in response to pronunciation instructions for the one or more strings;
Generating the first and second resonance signals corresponding to the first and second loudspeakers and showing the resonance tones of the respective strings based on the first and second string signals; Resonance signal generating means for generating a resonance sound of each string based on the resonance signal and generating a third resonance signal corresponding to the third speaker,
In response to a damper release instruction for one or more strings, the first performance signal is generated based on the first string signal and the first resonance signal for the corresponding string, and the second string is generated. The second performance signal is generated based on the signal and the second resonance signal for the corresponding string, and the third performance signal is generated based on the third string signal and the third resonance signal for the corresponding string. And a performance signal generating means for generating the performance signal. The storage means corresponds to a fourth speaker arranged in front of the third speaker with the performer as a reference, and a fourth sampling waveform obtained by recording the sound of each string of the keyboard instrument. Remember more,
The string signal generating means further generates a fourth string signal from a fourth sampling waveform for the corresponding string in response to a sounding instruction regarding one or more strings,
The resonance signal generating means further generates a fourth resonance signal indicating a resonance sound of each string based on the first and second resonance signals and corresponding to the fourth speaker,
The performance signal generating means corresponds to the fourth speaker based on the fourth string signal and the fourth resonance signal for the corresponding string in response to a damper release instruction for one or more strings. The performance signal generation device according to claim 1, which further generates a fourth performance signal. Generating first and second soundboard signals indicating vibration sound of the soundboard of the keyboard instrument and corresponding to the first and second speakers, respectively, based on the first and second resonance signals; Further comprising soundboard signal generating means for generating a third soundboard signal that indicates the sound of the soundboard based on the first and second soundboard signals and that corresponds to the third speaker,
The performance signal generating means generates the first performance signal based on the first string signal and the first soundboard signal, and outputs the second string signal and the second soundboard signal. 2. The performance signal generation device according to claim 1, wherein the second performance signal is generated based on the second performance signal, and the third performance signal is generated based on the third string signal and the third soundboard signal. .. The storage means corresponds to a fourth speaker arranged in front of the third speaker with the performer as a reference, and a fourth sampling waveform obtained by recording the sound of each string of the keyboard instrument. Remember more,
The string signal generating means further generates a fourth string signal from a fourth sampling waveform for the corresponding string in response to a sounding instruction regarding one or more strings,
The resonance signal generating means further generates a fourth resonance signal indicating a resonance sound of each string based on the first and second resonance signals and corresponding to the fourth speaker,
The soundboard signal generation means further generates a fourth soundboard signal that indicates a vibration sound of the soundboard based on the third soundboard signal and that corresponds to the fourth speaker.
The performance signal generation device according to claim 3, wherein the performance signal generation means generates a fourth performance signal based on the fourth string signal and the fourth soundboard signal. With respect to the performer, a first speaker arranged on the left front side, a second speaker arranged on the right front side, and a third speaker arranged between the first speaker and the second speaker. A performance signal generation method for generating first, second and third performance signals representing a performance sound simulating a sound of a keyboard instrument having a plurality of strings and a plurality of keys corresponding to respective speakers.
Storing the first, second and third sampling waveforms respectively obtained by recording the sounds of the strings of the keyboard instrument corresponding to the first, second and third speakers,
Generating first, second and third string signals from the first, second and third sampling waveforms for the string in response to pronunciation instructions for the one or more strings;
Generating the first and second resonance signals corresponding to the first and second loudspeakers and showing the resonance tones of the respective strings based on the first and second string signals; Generating a third resonance signal corresponding to the third speaker, which shows the resonance sound of each string based on the resonance signal of
In response to a damper release instruction for one or more strings, the first performance signal is generated based on the first string signal and the first resonance signal for the corresponding string, and the second string is generated. The second performance signal is generated based on the signal and the second resonance signal for the corresponding string, and the second performance signal is generated based on the third string signal and the third resonance signal for the corresponding string. Generating a performance signal according to No. 3, and generating a performance signal. With respect to the performer, a first speaker arranged on the left front side, a second speaker arranged on the right front side, and a third speaker arranged between the first speaker and the second speaker. An apparatus for generating first, second and third performance signals representing performance sounds simulating sounds of a keyboard instrument having a plurality of strings and a plurality of keys corresponding to speakers, respectively.
First, second and third sampling waveforms are obtained from the first, second and third sampling waveforms respectively obtained by recording the sound of the corresponding string of the keyboard instrument in response to the pronunciation instruction for one or more strings. First generating means for generating a string signal of
Generating the first and second resonance signals corresponding to the first and second loudspeakers and showing the resonance sound of each string based on the first and second string signals; Second generating means for generating a third resonance signal corresponding to the third speaker and showing a resonance sound of each string based on the resonance signal of
In response to a damper release instruction for one or more strings, the first performance signal is generated based on the first string signal and the first resonance signal for the corresponding string, and the second string is generated. The second performance signal is generated based on the signal and the second resonance signal for the corresponding string, and the third performance signal is generated based on the third string signal and the third resonance signal for the corresponding string. And a third generating means for generating the performance signal .

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