JP3012137B2 - Electronic musical instrument - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to, for example, synthesizers,
With respect to electronic musical instruments such as electronic pianos, electronic organs, sound source modules, etc., in particular, the operating state of a resonance effect operator provided to simulate the number of keys pressed, the range of sound, and a damper pedal or the like that produces a predetermined resonance effect in an acoustic piano. The present invention relates to an electronic musical instrument capable of changing a resonance effect based on the same.

[0002]

2. Description of the Related Art In the case of an acoustic piano, a piano string is usually held down by a device called a damper for suppressing the vibration of the string. When a keyboard is played, a hammer strikes the string, and at the same time the string is released by opening the damper. Vibrated and pronounced. When you play multiple keys, each string not only vibrates when struck by a hammer, but also resonates with each other's vibrations, producing a rich sound including resonance with the frame. And, the more keys are played at the same time, the greater the resonance effect becomes.

[0003] In the case of a conventional electronic musical instrument, when the number of keys pressed increases, musical tones corresponding to each depressed key are generated. However, they are simply added together and resonate with each other. Absent. In order to approximate the resonance effect of the acoustic piano, an effect circuit such as reverb may be used, but only a uniform effect set by a switch or the like on a setting panel is generated. That is, when the reverb effect switch is turned on, only a constant reverb effect is generated regardless of the number of keys pressed, so that a natural effect cannot be obtained.

[0004] In view of this, the applicant of the present application first, in Japanese Patent Application No. 5-51242, counts the number of key presses, and switches the control parameter value of the resonance circuit according to the number of key presses to vary the resonance effect. And suggested something. In this case, a considerably natural effect was obtained as compared with the related art. However, in the case of an acoustic piano, the strings in the low range are often thick and long in the winding, and the strings in the high range are thin and short in many cases. In addition, no damper is attached to the string in the highest range, and it is in the same state that the damper is always apart. Therefore, the degree of resonance greatly varies depending on the range of keys pressed, and simply changing the resonance effect by the number of keys pressed has caused a difference from a natural effect.
Then, the applicant of the present application has proposed in Japanese Patent Application No. 5-137863 an electronic musical instrument which also reflects the difference in effect depending on the range of the key being depressed. In this case, the difference in the musical range being played was positively linked to the change in resonance, enabling a more varied performance.

[0005]

However, an actual acoustic piano is provided with an operator, such as a damper pedal, for changing the resonance effect from normal. When the damper pedal is depressed, the damper separates from the strings all at once, and the damper stays away from the strings even if you release your finger from the keyboard, so you can continue to vibrate for a long time or sustain the sound and play the next sound. it can.

In addition to the strings corresponding to the keys played,
Since the dampers of the other strings are also separated from the strings, the other strings corresponding to the harmonic train of the sound resonate. In addition, no damper is usually attached to the 18-20 key of the highest pitch part of an acoustic piano, but if this damper pedal is also depressed, the other strings resonate, so that the degree of resonance increases. Become.

Therefore, the present invention takes into account not only the number of keys pressed and the range of sound, but also the operating state of a resonance effect operator that simulates a predetermined resonance effect such as a damper pedal in an acoustic piano, and is closer to an acoustic musical instrument. It is an object of the present invention to provide an electronic musical instrument capable of obtaining a natural resonance effect.

[0008]

Means for Solving the Problems and actions Such electronic musical instrument according to claim 1, wherein has been made in order to achieve the object, examples Shimesuru so in Figure 1, has a resonance sound creation means M1, its own device only Or an electronic musical instrument that performs in cooperation with an external device, and counts the number of note-on sound channels and counts the key-press distribution state based on the note-on key number. Key press distribution measuring means M3, and an operating element detecting means M4 for detecting whether a resonance effect operating element provided to simulate a predetermined effect such as a damper pedal in an acoustic piano is in an ON state or an OFF state. And the number of sounding channels counted by the counting means M2, the key press distribution state measured by the key press distribution measuring means M3, and the operation Based on the on / off state of the resonance effect operation element detected by the detection means M4, the key depression distribution state, the on / off state of the resonance effect operation element, and the control parameter value to the resonance sound generation means M1 are determined. a parameter value determining means M5 for determining a control parameter values by referring to the predetermined relationship, the control unit M6 for controlling the resonance sound creating means according to the determined parameter values by the parameter value determination means M5, the note-on Have been
Corresponding to each key number and the above resonance effect operator.
A contribution coefficient indicating a predetermined correspondence with the control parameter value
And a contribution coefficient storage means M7 for storing in advance
The parameter value determining means M5 is a key-press distribution measuring means.
Key press distribution state measured by M3 and the above operation element detection
ON of the resonance effect operator detected by the informing means M4
The contribution coefficient corresponding to the OFF state is stored in the contribution coefficient storage means M
7 and based on the read contribution coefficients,
The control parameter value is determined .

According to the electronic musical instrument of the present invention, the counting means M2 counts the number of note-on sounding channels, and the key depression distribution measuring means M3.
Measures the key press distribution state based on the key number to which the note is turned on, and determines whether the resonance effect operation element simulating a resonance effect operation element such as a damper pedal in an acoustic piano is in an ON state by the operation element detecting means M4. Detects whether it is off.

Then, the parameter value determining means M5 outputs the counted number of sounding channels, the measured key press distribution state, and the detected ON / OFF state of the resonance effect operator.
Based on the OFF state, the control parameter value is determined with reference to a predetermined correspondence relationship between the key depression distribution state, the ON / OFF state of the resonance effect operation element, and the control parameter value to the resonance generating means M1. At this time, the key press distribution state and the resonance effect operator
The contribution coefficient corresponding to the on / off state of
Read from stage M7 and based on the read contribution coefficients
To determine the control parameter value . Further, control means M6
Controls the resonance sound generating means M1 according to the determined control parameter value.
A resonance sound having a resonance effect according to the control parameter value is generated.

Therefore, for example, the predetermined correspondence between the key depression distribution state and the on / off state of the resonance effect operator and the control parameter value is determined by the relationship between the range of the acoustic piano and the resonance degree, and the resonance effect operator such as a damper pedal. And the degree of resonance, the difference between the number of note-on sounding channels (for example, the number of key presses) as well as the range of the key being pressed and the on / off of the resonance effect operator.・ Effects of the effect of turning off can be reflected, and an effect closer to that of an acoustic piano can be obtained.
The same applies to not only pianos but also various acoustic keyboard instruments.

[0012]

Further, in the present invention, since the contribution coefficient is set for each key and each resonance effect operator, the processing for setting the control parameter value is simplified. In addition, since the contribution coefficient can be set for each key individually, it is possible to make fine settings instead of rough distinctions such as, for example, a high range, a middle range, and a low range, and obtain a natural resonance effect closer to an acoustic instrument.

The contribution coefficient stored in the contribution coefficient storage means M7 has the effect that the depressing of each key of the acoustic piano exerts a resonance effect at the time of sounding from the acoustic piano, as described in claim 2. It is conceivable to adopt a simulation of the degree of influence.

For example, when the contribution coefficient is determined by simulating an acoustic piano,
As described in claim 3, it is conceivable determined in consideration of the presence or absence of chord length and damper acoustic piano. The length of a string in a general acoustic piano becomes shorter as going from a lower range to a higher range, and since a damper is not attached to the highest range of 18 to 20 keys, the portion where the damper is provided is a string length. As an example, a setting method in which the contribution coefficient is sequentially reduced in correspondence with the above, and the contribution coefficient is increased as the treble becomes higher in the highest sound range can be considered as an example.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to further clarify the configuration and operation of the present invention described above, a preferred embodiment of the electronic musical instrument of the present invention will be described below. FIG. 2 is a block diagram showing an electrical configuration of the electronic musical instrument according to one embodiment.

The MIDI interface 10 controls the transfer of performance information transmitted and received between an external device (not shown) and the CPU 11. The external device referred to herein is one that supplies performance information to the electronic musical instrument or generates musical sounds based on performance information from the electronic musical instrument. For example, an MID such as an electronic piano, an electronic organ, and an electronic keyboard
An electronic musical instrument having an I interface function is used. The MIDI interface 10 is directly connected to the CPU 11 without passing through the system bus 12.

The CPU 11 controls each part of the electronic musical instrument according to a control program stored in a program memory of the ROM 17. The CPU 11 includes a system bus 1
2, the panel 13 and the pedal 15 are connected via the system bus 12, and the ROM 17 and the RAM 1 are connected via the system bus 12.
9, the touch sensor 21, the display panel unit 25, the musical sound generation unit 27, and the sound effect circuit 41 are connected.

The panel 13 includes various switches such as a melody selection switch, a rhythm selection switch, and a tone color selection switch (not shown), in addition to the power switch 13a and the mode designation switch 13b. The set / reset state of each switch is detected by a panel scan circuit provided therein. Data on the switch set state detected by the panel scan circuit in the panel 13 is controlled by the CPU 11. It is stored in the RAM 19. Various information such as the current setting status of the switches on the panel 13 is displayed on the display panel unit 25.

The pedal 15 corresponds to a resonance effect operator according to the present invention, and includes, for example, a damper pedal, a soft pedal, a sostenuto pedal (not shown), etc., depending on the type of electronic musical instrument. The CPU 11 controls the voltage to change the volume, or changes the attenuation characteristic according to. Note that these dampers, soft pedals, sostenuto pedals, and the like may be provided with corresponding pedals, or one pedal may be shared, and each function may be exhibited by changing the setting.

The ROM 17 stores tone color data and various other fixed data in addition to the above-mentioned program for operating the CPU 11. The tone color data memory stores a frequency number, a waveform number, an envelope waveform number, mode data, and the like, which are data for synthesizing a tone vibration.

Each data stored in the tone data memory is specified by a tone point. That is, the timbre pointer is changed according to the panel operation and the keyboard operation, and each data designated by the changed timbre pointer is stored in the waveform memory 31 and the envelope waveform memory 33.
Is read from. Then, it is supplied to the tone generator 27 after a predetermined operation is performed.

The table for determining the attack speed, attack level, decay speed, decay level, and the like, and the parameter value selection table are represented by R
OM17 is provided. On the other hand, the RAM 19 has a CP
U11 defines a work area, various registers, counters, flags, and the like for controlling the electronic musical instrument.
A data area in which necessary data stored in the OM 17 is transferred and stored, a plurality of registers in which data necessary for sound emission corresponding to the state of each switch of the panel 13 are set, and a tone generation unit are set to unused channels. It has an assignment memory for storing data to be assigned to the memory, a storage area for storing performance information, and the like.

The panel 13 stored in the RAM 19
The data regarding the setting state of the switch is referred to by the CPU 11 or the like as necessary at the time of sound generation. The key press map for storing the on / off state of the keyboard unit 23 and the note-on counter are also stored in the RAM 1.
9.

The keyboard section 23 is used for designating a musical tone to be generated, and is composed of a plurality of keys and key switches which are opened / closed in conjunction with key press / release operations of these keys. The touch sensor 21 detects the on / off state of the key switch and sends it to the CPU 11.

The tone generator 27 generates and outputs tone signals corresponding to various musical instruments by reading and reproducing the tone waveform data stored in the waveform memory 31. CPU 1 according to an input from keyboard unit 23
1 based on the control data output from
Reads out the tone waveform data and envelope data corresponding to the designated tone and volume from the waveform memory 31 and the envelope waveform memory 33, and outputs them as tone signals obtained by adding envelope data to the tone waveform data.

The output tone signal is divided into two systems, one of which is supplied to the first D / A converter 47 via the sound effect circuit 41.
The other is supplied to the second D / A converter 47b without passing through the sound effect circuit 41. The sound effect circuit 41 applies a predetermined sound effect (for example, a resonance effect) to the musical sound signal sent from the musical sound generation unit 27 according to the parameter control signal from the CPU 11 to generate a sound effect sound such as a resonance sound. Output.

Also, the tone generator 27 outputs the sound effect circuit 4
The digital tone signal output through 1 and through is converted into an analog tone signal by first and second D / A converters 47a and 47b and sent to first and second sound systems 49a and 49b, respectively. Supplied. Each of the sound systems 49a and 47b includes an amplifier and a speaker.
It is a well-known device that amplifies analog tone signals supplied from the A converters 47a and 47b with a predetermined gain, converts them into acoustic signals, and emits sound.

An adder for adding the tone signal output from the sound effect circuit 41 and the tone signal output through the tone generator 27 is provided, and one D / A converter and one sound system are provided. It may be. next,
The operation of this embodiment will be described. FIG. 3 is a flowchart showing the general processing of this embodiment.

When the power is turned on, the CPU 11, RAM 19,
Initialization of the sound source LSI and the like is performed. At S200, panel event processing is performed. At S300, pedal event processing is performed.
At S400, a keyboard event process is performed, and at S4
After the keyboard event process of 00, the process returns to S200 and the following processes are repeated. The following event processing S200, S30
0 and S400 will be described in detail.

First, the panel event processing (S200)
This is a process related to the panel 13, such as turning on a corresponding LED or switching to a set tone according to the setting status (set / reset) of each switch on the panel 13.

Next, the pedal event process (S300) will be described with reference to FIG. This pedal event processing includes damper pedal processing (S310 to S370) and other pedal processing (S380). After the damper pedal processing is performed first, other pedal processing is performed.

First, at S310, it is determined whether or not a damper pedal ON event has occurred. If the damper pedal is newly depressed, that is, if an ON event has occurred (S310: YES), a flag indicating that the damper pedal has been turned on is set in the storage unit on the RAM 19 (S310).
320), a key pressing effect process (S330) is executed. This key depression effect processing will be described later. The damper pedal process ends in the key pressing effect process of S330, and the process proceeds to the next other pedal process (S380).

On the other hand, if there is no on-event of the damper pedal in S310, it is determined whether or not there is an off-event of the damper pedal (S340). If there is an off event (S340: YES), the already set damper pedal on flag is reset (S350), and a key release effect process (S360) is executed. This key release effect processing will be described later. After the key release effect processing in S360, the damper pedal off processing is performed (S360).
370). That is, the sound that has been extended while the keyboard is pressed and the damper pedal is depressed is silenced. After the damper pedal off processing of S370, other pedal processing (S
380).

If there is no off event of the damper pedal in S340, nothing is performed, and the process shifts to other pedal processing (S380). The other pedal processing in S380 is, for example, a soft pedal processing or a sostenuto pedal processing, for example, setting / resetting a flag according to ON / OFF of an event, and sliding a variable resistor according to a degree of pedal depression. This is an operation of controlling the voltage by performing such operations.

Next, referring to the flowchart of FIG.
The keyboard event processing (S400) will be described. In the present keyboard event process, it is first determined whether or not an on event of the keyboard has occurred (S410). If an on event has occurred, a key pressing effect process (S420) is executed. This S4
The key pressing effect process of No. 20 is the same as the key pressing effect process S330 of the pedal event process (FIG. 4) described above, and the contents thereof will be described later. Subsequent to the key depression effect processing of S420, the musical tone parameters are loaded into the tone generator LSI (S420).
430). The musical tone parameters include, for example, an attack speed and an attack level indicating a rising speed and a magnitude, a decay speed and a decay level indicating a falling speed and a magnitude, a value of a reading (producing) frequency, and a start of reading a waveform memory. These are addresses and the like, which are loaded into the sound source LSI.

Thereafter, a sound generation process is performed (S440).
This keyboard event processing ends. That is, the CPU 11
Gives a tone generation instruction to the tone generator LSI. When the tone is generated by the tone generation process, a process for one keyboard event is performed. This process is repeated every time an event occurs.

On the other hand, if there is no ON event in S410, it is determined whether there is an OFF event (S450), and if there is an OFF event (S45).
0: YES), it is determined whether or not the damper is on (S460). If there is no off-event in S450 (S450: NO), that is, if there is no on-vent and no off-event, this keyboard event process ends without doing anything. If the damper is ON in S460 (S
(460: YES), the keyboard event processing is terminated without doing anything.

On the other hand, if a negative determination is made in S460, that is, if the damper is off, the release speed is read from the ROM 17 and loaded into the tone generator LSI (S470).
After performing the subsequent key release effect process (S480), the process ends.
The key release effect processing in S480 is the same as the key release effect processing S360 in the pedal event processing (FIG. 4) described above, and the details will be described later.

Next, the above-mentioned S330 (FIG. 4) and S4
The details of the key press effect processing executed in step 20 (FIG. 5) will be described with reference to the flowchart in FIG. First, the note-on counter is incremented (S510), and a key press distribution measurement process is performed (S520). This key press distribution measurement processing will be described later. In S530, the counter value and the cumulative distribution coefficient AL (described later) calculated in the key press distribution measurement process are read, and the corresponding control parameter value is determined by referring to the parameter value selection table. In S540, the control parameter value is determined. Controls the sound effect circuit 41 to end this processing.

By the control in S540, the sound effect circuit 41 applies a predetermined resonance effect based on the control parameter to the digital tone signal from the tone generator 27 to create a resonance sound, and the first D / A. Output to the converter 47a. Subsequently, S360 (FIG. 4) and S480 (FIG. 5)
Will be described with reference to FIG.

First, the note-on counter is decremented (S610), and a key press distribution measuring process (FIG. 8) described later is performed (S620). Then, the counter value and the cumulative distribution coefficient AL
Is read, a corresponding control parameter value is determined with reference to the parameter value selection table (S630), and the sound effect circuit 41 is controlled by the control parameter value (S630).
0) This process ends.

Next, S52 of the key depression effect processing (FIG. 6)
The key press distribution measurement process performed in S620 of the 0 and key release effect process (FIG. 7) will be described with reference to the flowchart of FIG. In this key depression distribution measurement process, first, the distribution coefficient EL is loaded from the distribution coefficient table based on the key number where the event occurred (S700). Here, the distribution coefficient table will be described with reference to FIG.

In this embodiment, not only each key but also a damper pedal and a soft pedal are included as key numbers. Then, as shown in FIG. 9, distribution coefficients EL are set for the 88 tones from the lowest sound "A0" to the highest sound "C8", the damper pedal, and the soft pedal. In the present embodiment, the distribution coefficient EL corresponding to the lowest sound “A0” is set to “65” which is the largest of the 88 sounds, and, roughly speaking, the distribution coefficient EL becomes smaller as the sound approaches the treble range. Is set to However, the width is small although there is some vertical movement in the middle.

The distribution coefficient EL is increased again for the highest range of about 18 to 20 keys. This is because, in the case of an acoustic piano, a damper is not attached to the string in the highest range and the state is always the same as the state where the damper is separated, so that the state is simulated. Therefore, the highest sound "C
The distribution coefficient EL of “8” is 48 and has the same value as that of “F1” belonging to the low frequency range.

The distribution coefficient EL of the damper pedal is 70
Is set to be larger than the distribution coefficient EL65 corresponding to the lowest sound “A0”. The distribution coefficient EL of the soft pedal is 40. Note that this distribution coefficient EL corresponds to the contribution coefficient. By variously setting this distribution coefficient table, the weighting by the key pressed area can be arbitrarily changed. In the example shown in FIG. 9, the length of the strings of the acoustic piano (becomes shorter as going from the lower range to the higher range) is considered from the low range to just before the highest range, and no damper is attached in the highest range. In consideration of the degree of resonance caused by the strings, it is possible to simulate as much as possible how each keyboard position on the acoustic piano affects the resonance effect.

Returning to FIG. 8, after the distribution coefficient EL is loaded in S700, if the key is pressed (the key pressing includes the ON of the pedal 15) (S710: YES), the cumulative distribution coefficient The loaded distribution coefficient EL is added to AL (S720), and this processing ends.

On the other hand, a key release (S710: NO) instead of a key press (key release here also includes turning off of the pedal 15)
In the case of (S730: YES), the loaded distribution coefficient EL is subtracted from the accumulated distribution coefficient AL (S740). If the cumulative distribution coefficient AL resulting from the subtraction is smaller than zero (S
750: YES), AL = 0 (S760), this process ends, and if cumulative distribution coefficient AL is equal to or greater than zero (S75).
0: NO), and the process ends. Note that also in the case of a negative determination in S730 (that is, neither a key press nor a key release), the process ends as it is.

As described above, the cumulative distribution coefficient AL of this embodiment is
Simulates the case of an acoustic piano,
This reflects the degree of the resonance effect when the currently depressed range is produced. And S5 of FIG.
30 and in S630 of FIG. 7, the control parameter value, that is, the tone signal sent from the tone generator 27 in the sound effect circuit 41 is referred to based on the counter value and the cumulative distribution coefficient AL with reference to the parameter value selection table. A parameter value for creating resonance by giving resonance to the sound is determined. A method of this determination will be described.

For example, based on the counter value and the cumulative distribution coefficient AL, a predetermined weight is calculated as (counter value) × (resonant sound control parameter constant) × (cumulative distribution coefficient AL), and the calculation is performed. Determine control parameter values. It should be noted that the method of obtaining the control parameter value is determined so as to be weighted by the counter value corresponding to the number of key presses and the cumulative distribution coefficient AL corresponding to the key press distribution and the pedal on / off state. However, the present invention is not limited to the above method.

The counter value is not used as it is. For example, when the number of keys pressed (or the number of sounding channels corresponding to the key pressed) is 1 to 3, "1" is set, and 4 to 7 is "2". , 8
The above can be considered to be classified into about three levels based on the condition of "3". Furthermore, the control parameter value may be determined by first classifying based on the cumulative distribution coefficient AL and referring next to the counter value corresponding to the classified cumulative distribution coefficient AL. The parameter value selection table in this case is, for example, for a certain cumulative distribution coefficient AL,
When the counter value is 1, 2-4, 5-7,
For example, in the case of eight or more, it is also conceivable to individually set according to the counter value based on the cumulative distribution coefficient AL.

The execution of the processing of S530 of FIG. 6 and S630 of FIG. 7 corresponds to the processing as the counting means M2,
The execution of the key press distribution measuring process shown in FIG. 8 corresponds to the process as the key press distribution measuring unit M3 of the present invention. Further, the pedal event processing in FIG. 4 corresponds to the processing as the operating element detecting means M4 of the present invention, and the execution of the processing in S530 in FIG. 6 and S630 in FIG. 7 corresponds to the processing as the parameter value determining means M5. The execution of the processing of S540 in FIG. 6 and S640 in FIG. 7 corresponds to the processing as the control unit M6.

In the above embodiment, the control parameter value is determined with reference to the parameter value selection table.
The control parameter value may be determined by executing a predetermined program process. As described above, according to the present electronic musical instrument, the control parameter is determined based on the key press distribution state measured based on the key number of which the note is on and the cumulative distribution coefficient AL calculated based on the pedal on / off state. Determine the value. Then, the acoustic effect circuit 41 emits a resonance sound having resonance according to the control parameter value. Therefore, in the case of the above embodiment, since the cumulative distribution coefficient AL is set in consideration of the relationship between the range of the acoustic piano and the degree of resonance due to the on / off of the resonance effect operator such as the damper pedal, the acoustic piano is more suitable for acoustic pianos. A similar effect can be obtained.

Further, by setting the distribution coefficient EL for each key number and each pedal, the processing for setting the control parameter value is simplified. In addition, since the distribution coefficient can be set corresponding to each key individually, it is possible to make fine settings instead of rough distinction such as high range, middle range, low range, for example,
A natural resonance effect closer to that of an acoustic instrument can be obtained.

Although one embodiment of the present invention has been described above, the present invention is not limited to this embodiment, and various embodiments can be adopted without departing from the gist of the present invention. For example, in the above embodiment, the number of key presses is counted and used to determine the control parameter value, but this may be the number of sound channels instead of the number of key presses. Depending on the model, a single key may use a plurality of channels, and the number of sound channels to be used may change depending on the tone setting (for example, piano, organ, harpsichord, etc.).
Therefore, the number of sounding channels may be counted and used for determining the control parameter value.

[0056]

As described above in detail, according to the electronic musical instrument of the present invention, not only the difference in the number of note-on sounding channels (for example, the difference in the number of keys pressed) but also the range of the key pressed and the resonance. By reflecting the difference of the effect by turning on and off the effect operator, it is possible to obtain an effect closer to an acoustic piano.

Further, since the contribution coefficient is set for each key and each resonance effect operator, the processing for setting the control parameter value is simplified. In addition, since the contribution coefficient can be set for each key individually, it is possible to make fine settings instead of rough distinctions such as, for example, a high range, a middle range, and a low range, and obtain a natural resonance effect closer to an acoustic instrument.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a basic configuration of an electronic musical instrument of the present invention.

FIG. 2 is a block diagram illustrating an electrical configuration of the electronic musical instrument according to the embodiment.

FIG. 3 is a flowchart illustrating a general process of the present embodiment.

FIG. 4 is a flowchart illustrating pedal event processing according to the present embodiment.

FIG. 5 is a flowchart illustrating keyboard event processing according to the present embodiment.

FIG. 6 is a flowchart illustrating a key pressing effect process according to the present embodiment.

FIG. 7 is a flowchart illustrating a key release effect process according to the present embodiment.

FIG. 8 is a flowchart illustrating a key press distribution measurement process.

FIG. 9 is an explanatory diagram illustrating a distribution coefficient table according to the present embodiment.

[Explanation of symbols]

M1 ... resonant sound creating means, M2 ... counting means, M
3 ... key press distribution measuring means, M4 ... operator detecting means, M
5 ... parameter value determination means, M6 ... control means, M7 ...
Contribution coefficient storage means, AL: cumulative distribution coefficient, EL: distribution coefficient, 10: MIDI interface, 13 ...
Panel, 15 ... Pedal, 21 ... Touch sensor, 23
... keyboard part, 27 ... tone generator, 31 ...
Waveform memory, 33 ... Envelope waveform memory, 41
... Sound effect circuit, 47a, 47b ... D / A converter,
49a, 49b… Sound system

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G10H 1/00

Claims (3)

(57) [Claims] Claims: 1. A method for producing a resonance sound, comprising:
Alternatively, an electronic musical instrument performing in cooperation with an external device, a counting means for counting the number of note-on sounding channels, and a key press distribution for measuring a key press distribution state based on the key number of the note-on. Measuring means; operating element detecting means for detecting whether a resonance effect operating element, such as a damper pedal in an acoustic piano, which produces a predetermined resonance effect is in an on state or an off state; and the counting means The key press distribution is determined based on the number of sound channels counted by the key press, the key press distribution state measured by the key press distribution measuring means, and the on / off state of the resonance effect operation element detected by the operation element detection means. A predetermined correspondence between a state, an on / off state of the resonance effect operator, and a control parameter value to the resonance sound creating means. Parameter value determining means for determining a control parameter value with reference to the relationship; control means for controlling the resonance sound generating means with the parameter value determined by the parameter value determining means ; Resonance effect
A predetermined value corresponding to the control parameter
Contribution coefficient notation that stores the contribution coefficient indicating the correspondence in advance
Storage means, wherein the parameter value determination means is provided in the key depression distribution measurement means.
Therefore, the measured key press distribution state and the operation element detecting means
ON / OFF state of the resonance effect operator detected by
Reads the corresponding contribution coefficient from the contribution coefficient storage means
Control parameters based on the read contribution coefficients.
An electronic musical instrument characterized by determining a meter value . 2. The electronic musical instrument according to claim 1 , wherein the contribution coefficient stored in the contribution coefficient storage means is used to determine a resonance effect when each key of the acoustic piano is pressed by the acoustic piano. An electronic musical instrument characterized in that the degree of influence is simulated. 3. The electronic musical instrument according to claim 2 , wherein the contribution coefficient simulating the degree of influence of the key depression of each key of the acoustic piano on the resonance effect at the time of sounding from the acoustic piano is the acoustic coefficient. An electronic musical instrument, which is determined in consideration of the string length of a piano and the presence or absence of a damper.