JP2011064728A - Electronic keyboard instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic keyboard instrument which is adaptable to variety of performance modes in a structure of the small number of switch contacts and which facilitates adjustment of variation in a sounding position due to a mechanical structure and adjustment of change over time. <P>SOLUTION: First and second switches 11 and 12 are switched on or off, when a stroke of a " key or turning member" 10 is a first stroke position, or a second stroke position. When a delay sounding mode is set by a sounding mode-setting part 14, a sounding indicating part 17 selects output of a timer 16. At first time after key pressing, the timer 16 starts counting from timing that the second switch 12 is switched on, after the first switch 11 is switched on. At timing after a predetermined time period D1(i), the sounding indicating part 17 outputs sounding indication in which a pitch assigned to the " key or turning member" 10 is indicated, to a sound source part 13. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an electronic keyboard instrument in which a keyboard is used and the timing of sound generation instruction is controlled in accordance with the mode of key pressing / releasing operation by a player.

In an electronic keyboard instrument, it detects the rocking of the key or the rocking of the mass body in conjunction with this key, and does not simply indicate the sound, but the manner of the sound to be sounded, for example, the volume, the effect, the sounding timing Etc. are controlled.
As the above-described swing detection method, in general, a multi-contact method in which several points (depth positions) in the entire stroke region of the key are detected by a plurality of rubber contacts, and an entire stroke region of the key are detected. There are two methods: a total stroke detection method.
Among these, in the multiple contact detection method, the sound volume can be adjusted according to the key speed, for example, the touch curve can be changed, but basically the stroke position to be sounded cannot be adjusted. Among the multiple contact detection methods, the one provided with three or more movable contacts and the full stroke detection method can adjust the sounding position. However, there is a problem that the structure of the switch or sensor and the sound generation control program are complicated.

Hereinafter, the multiple contact detection method will be described with specific examples.
In the first prior art (see Patent Document 1), a key switch for detecting the operation of each key ("shallow switch 47" in FIG. 2 of Patent Document 1, having two switches inside), and each key And a key switch ("Deep switch 48" in the figure, having two switches inside) for detecting the operation of the mass body interlocking with. By detecting key touch at each depth with both key switches and controlling the sound generation timing, it is possible to switch between early (shallow key depression) and normal pronunciation Yes. However, in this first prior art, it is possible to switch the sounding position, but the structure and processing become complicated.

On the other hand, in the second prior art (see Patent Document 2), a key switch having three movable contacts (three switches) (FIG. 2, Patent Document 2, rubber dome 20, pressing parts 21, 22, 23, switch) 30), the key speed V1 is changed from the time when the key reaches the first contact position to the time when the key reaches the second contact position, and the time when the key reaches the second contact position is changed to the third contact position. The key speed V2 is detected in the interval up to when the key is reached, the tone color is controlled, and the key-on operation is performed when the key reaches the third contact position.
On the other hand, there is a staccato playing method (FIG. 4 (d) of Patent Document 2) in which a key is pressed at a fast speed to the middle of all stroke positions and the key is released as it is. In this case, the stroke position does not reach the third contact position. Therefore, when the key speed V1 is equal to or higher than the predetermined sound generation speed Vp, the predicted value V2 ′ of the key speed V2 and the predicted key-on time t3 ′ at which the key reaches the third contact position are obtained, and the predicted key-on time t3 Key on at '.
However, since the second prior art is based on the premise that a key switch having three movable contacts is used, the structure and control become complicated. Further, in the above playing method, there is a case where the switch-off at the time of key release occurs before the key-on predicted time t3 ′. However, no countermeasure has been studied for such a case where the order of occurrence of key-on and key-off is reversed.

Japanese Patent No. 3719144 JP 2007-52357 A

  The present invention has been made in order to solve the above-described problems, and is an electronic device that can cope with various performance modes with two switch configurations and can easily adjust to variations in sound generation position and aging due to a mechanical structure. The object is to provide a keyboard instrument.

According to the present invention, in the invention described in claim 1, the stroke of the key or the stroke of the rotating member is the first stroke position, the second stroke position having a larger stroke than the first stroke position. A timing at which the stroke reaches the second stroke position from a timing at which the stroke reaches the first stroke position, and a first switch and a second switch that are turned on and off, respectively. An electronic keyboard instrument comprising performance control means for detecting a key pressing speed of the key or the rotating member according to a time difference until and a sound source for controlling a volume of a musical sound to be generated according to the key pressing speed. The sound generation instructing means of the control means is the timing when the first predetermined time has elapsed from the timing when the stroke reaches the second stroke position. In, the sound source to indicate the pronunciation of the musical tone, the first value of the predetermined time is intended to be variably set.
Therefore, the timing for instructing the sound source to generate a musical tone can be easily changed without moving the arrangement of the second switch.
As a result, it is easy to match the timing of the sound generation instruction with the intention and preference of the performer. In addition, the value of the first predetermined time is variably set so as to cancel out the detection deviation of the timing at which the stroke reaches the second stroke position, which is caused by the secular change “sagging” of the members constituting the second switch. By doing so, it is possible to maintain and improve continuous performance quality.

According to a second aspect of the present invention, in the electronic keyboard instrument according to the first aspect, the pronunciation instruction means changes the first predetermined time according to the key pressing speed.
Accordingly, it is possible to set a stroke position for instructing pronunciation. As a result, finer control of the sound generation instruction timing becomes possible.

According to a third aspect of the present invention, in the electronic keyboard instrument according to the first or second aspect, the sounding mode setting means of the performance control means sets one of a normal sounding mode and a delayed sounding mode, and the sounding instruction When the normal sound generation mode is set, the means instructs the sound source to generate the musical sound at the timing when the stroke reaches the second stroke position.
Accordingly, the sound generation instruction timing can be switched corresponding to various performance modes. For example, in the normal sounding mode, sound generation is instructed at a shallow position with a small stroke, and in the delayed sounding mode, sounding is instructed at a deep position with a large stroke.

According to a fourth aspect of the present invention, in the electronic keyboard instrument according to any one of the first to third aspects, the sound generation instruction means applies the sound source to the sound source in accordance with a tone color of a musical sound to be generated by the sound source. On the other hand, the timing for instructing the pronunciation of the musical sound is changed.
Accordingly, the timing for instructing the tone generation of a musical tone having a high correlation with the tone color is changed in conjunction with the designation of the tone color, so that the convenience of the setting operation is improved.
Specifically, the first predetermined time can be changed or one of the normal sounding mode and the delayed sounding mode can be set in conjunction with the tone color designation.

According to a fifth aspect of the present invention, in the electronic keyboard instrument according to any one of the first to fourth aspects, the mute instruction means of the performance control means is configured such that the sound generation instruction means The sound source is instructed to mute the sound at a timing determined in accordance with the time difference between the timing for instructing the tone generation and the timing at which the stroke returns to the first stroke position.
Normally, the mute instruction is given at the timing when the stroke of the key or the rotating member returns to the first stroke position. For this reason, the sound generation time may become extremely short due to the delay in the sound generation instruction. As a result, the pronunciation time may not be suitable for the performance song or musical tone.
On the other hand, in the present invention, it is possible to eliminate the case where the sound generation time is extremely shortened.
More specifically, the later of the timing at which the second predetermined time has elapsed from the timing at which the sound generation instruction means instructs the sound generation, and the timing at which the key or the rotating member returns to the first depth position, whichever is later Instruct the sound source to mute the sound at the timing. As a result, at least the second predetermined time is secured as the sound generation time.

According to a sixth aspect of the present invention, in the electronic keyboard instrument of the fifth aspect, the mute instruction means is configured such that the timing at which the stroke returns to the first stroke position is applied to the sound source by the sound generation instruction means. The timing at which a second predetermined time has elapsed from the timing at which the sound generation instruction means instructs the sound source to generate the musical sound when the musical sound is instructed before the sound generation instruction information is temporarily stored. The sound source unit is instructed to mute the musical tone based on the temporarily stored mute instruction information.
Normally, after a sound generation instruction is issued by pressing a certain key, a mute instruction is issued by releasing the key. Therefore, if there is a mute instruction before the sound generation instruction, the conventional performance control means may malfunction.
On the other hand, in the present invention, since the order of the sound generation instruction and the mute instruction is not reversed, normal performance control processing is guaranteed.

According to a seventh aspect of the present invention, in the electronic keyboard instrument according to any one of the first to fourth aspects, the performance control means includes a mute instruction means, and the mute instruction means comprises the stroke. Instructing the sound source unit to mute the musical sound at a timing when a second predetermined time has elapsed from the timing when the first stroke position returns to the first stroke position, and the first predetermined time and the second predetermined time. Is set for each of the plurality of keys or the rotating members arranged on the keyboard of the electronic keyboard instrument, and the key press speed of the key or the rotating member is detected by calculating the time difference as the electronic keyboard instrument. It is detected after correcting the plurality of keys or the rotating members arranged on the keyboard.
Therefore, the sound generation time can be controlled by delaying the mute instruction.
The detection of the timing at which the stroke reaches the first stroke position and the second stroke position and the detection of the key pressing speed are performed at the positions where the first and second switches are attached to the individual keys or rotating members. Variations occur due to variations and aging of the members constituting the first and second switches.
Therefore, in the present invention, the first predetermined time and the second predetermined time are set for each of the plurality of keys or rotating members, and the above-described time difference is corrected for each of the plurality of keys or rotating members. By detecting the key pressing speed, continuous performance quality can be maintained and improved.
In the inventions described in the other claims, the first predetermined time and the second predetermined time are set for each of a plurality of keys or rotating members arranged on the keyboard of the electronic keyboard instrument. The key pressing speed of the key or the rotating member may be detected after correcting the time difference for each of the plurality of keys or rotating members arranged on the keyboard of the electronic keyboard instrument.

  According to the present invention described above, there is an effect that various performance modes can be handled with a simple key switch configuration of two switches (two movable contacts). In addition, it is possible to easily cope with variations in position where the first and second switches are attached to the key or the rotating member and changes with time, and to maintain and improve the performance quality continuously.

It is typical explanatory drawing which shows the key switch used by embodiment of this invention. It is a functional block diagram explaining embodiment of this invention. It is operation | movement explanatory drawing about the sound generation process of the embodiment shown in FIG. It is operation | movement explanatory drawing about the sound generation process and the mute process 2 in the delay sound generation mode of embodiment shown in FIG. It is operation | movement explanatory drawing about the sound generation process and the mute process 3 in the delay sound generation mode of embodiment shown in FIG. It is operation | movement explanatory drawing about the modification of the sound generation process in the delay sound generation mode of embodiment shown in FIG. 2, and a mute process. It is a hardware block diagram for implement | achieving the musical tone control function of embodiment shown in FIG. 2 using a computer. It is a flowchart which shows an example of the operation | movement which implement | achieves the musical tone control function in embodiment shown in FIG. 2 using a computer. It is a flowchart which shows the detail of the key pressing / key release process in the main process of Fig.8 (a). FIG. 10 is a flowchart of key depression / key release processing subsequent to FIG. 9. FIG. FIG. 11 is a flowchart of key depression / key release processing subsequent to FIG. 10. FIG.

FIG. 1 is a schematic explanatory view showing a key switch used in an embodiment of the present invention.
FIG. 1A is a side view of a key and a key switch. FIG. 1B is a vertical sectional view of the key switch.
The key 1 is an example of a white key, 1a is a key body portion, 1b is a key tip portion, 1c is a key fulcrum portion, 1d and 1e are first and second actuators having a horizontal cross section (+ shape). Yes, and protrudes downward from the inside of the key body 1a.
2 is a key frame, and 2a is a key support. Reference numeral 3 denotes a key switch circuit board attached to the key frame 2.
Reference numeral 4 denotes a flexible elastic body, for example, a rubber key switch, which is disposed on the key switch circuit board 3 and faces the first actuator 1d and the second actuator 1e of the key body 1a.

4a is a thin and box-shaped outer dome, and 4b is a driven portion formed on the outer dome 4a. The actuator contact surface of the driven portion 4 b is a rounded rectangle, and two columnar hollow portions are arranged in the longitudinal direction of the key 1. A first inner dome 4c and a second inner dome 4d are formed downward in each hollow portion, and the first movable contact 4e and the second movable contact 4f are fixed to the bottom plate portion of each recess. ing.
On the upper surface of the key switch circuit board 3, a first fixed contact (one pair) 4g and a second fixed contact (one pair) 4h are formed. The first movable contact 4e is closer to the key fulcrum 1c, the second movable contact 4f is closer to the key tip 1b, and the first movable contact 4e is lower than the second movable contact 4f. is there.
The first movable contact 4e and the first fixed contact (one pair) 4g become the first switch (SW1) 11, and the second movable contact 4f and the second fixed contact (one pair) 4h are the second. Switch (SW2) 12.

When the performer depresses the key body 1a, the first actuator 1d presses the key fulcrum 1c side of the driven part 4b of the key switch 4, and the second actuator 1e presses the key tip of the driven part 4b. Press the 1b side. At a depth at which the key stroke becomes the first stroke position, the first switch (SW1) 11 changes from OFF to ON (ON event). The second switch (SW2) 12 is turned on (on event) at a depth at which the key stroke becomes the second stroke position having a stroke larger than the first stroke position. When the key body 1a is further pushed down, the key body 1a comes into contact with a stopper member (not shown), so that the stroke of the key body 1a reaches the full stroke position.
When the performer performs a key release operation, the second switch (SW2) 12 and the first switch (SW1) 11 are the timings at which the key stroke returns to the second stroke position and the first stroke position, respectively. Then, it changes from on to off (off event).
The first switch (SW1) 11 and the second switch (SW2) 12 are different in the contact structure from that shown in FIG. A switch that reverses the state relationship may be employed.

  Since the key switch 4 described above uses a flexible elastic body, the thin portions of the elastic body in the outer dome 4a, the first inner dome 4c, and the second inner dome 4d may “sag”. There is. Then, it becomes impossible to switch on / off accurately at the first stroke position and the second stroke position.

FIG. 2 is a functional block diagram illustrating the embodiment of the present invention.
Reference numeral 10 denotes a “key or rotating member”. This includes the case of the key 1 as shown in FIG. 1 and the case of a rotating member that rotates in conjunction with a key pressing / releasing operation on the key 1. This rotating member is a mass body (hammer) in Patent Document 1 of the background art, and is driven by a force transmitting portion provided in each key 1 to give a key touch feeling like an acoustic piano to a player's finger. .
In the case of using a rotating member, the first switch (SW1) 11 and the second switch (SW2) 12 may detect the stroke of the rotating member. It may be detected.
A sound source unit 13 generates a musical tone signal having a pitch assigned to each key in response to a key pressing operation and emits the sound from a speaker or the like.
Although not shown in FIG. 2, a plurality of sound generation channels are prepared. The number of pronunciation channels is equal to or less than the maximum number of simultaneously pronounceable sounds, and the maximum number of simultaneously soundable sounds is smaller than the total number of all keys on the keyboard.

The functional blocks 14 to 20 are functional blocks that realize the performance control function.
Reference numeral 14 denotes a sound generation mode setting unit, which sets whether to issue a sound generation / mute instruction in the normal mode or to issue a sound generation / mute instruction in the delayed sound generation mode specific to the embodiment of the present invention.
Reference numeral 15 denotes a key pressing speed detection unit, and from the timing when the stroke of the “key or rotating member” 10 detected by the first switch (SW1) 11 reaches the first stroke position during the key pressing operation. According to the time difference until the timing at which the stroke of the “key or rotating member” 10 detected by the second switch (SW2) 12 reaches the second stroke position, the key is pressed by the “key or rotating member” 10. Detect speed. The detected key pressing speed is output to the sound source unit 13, and the sound source unit 13 controls tone characteristics such as a volume envelope of the tone to be generated.
When the normal sound generation mode is instructed by the sound generation mode setting section 14, the sound generation instruction section 17 gives the sound source section 13 the timing when the stroke of the “key or rotating member” 10 reaches the second stroke position. Instruct the pronunciation (KON: key-on).

3 to 5 are operation explanatory views showing the operation of the embodiment of the present invention shown in FIG. 2 according to different operation modes of the key pressing / releasing operation.
In each figure, the horizontal axis represents an elapsed time T (i) with an arbitrary initial timing as a base point. i is the sound channel number. The elapsed time T (i) is a parameter counted for each sound generation channel, but may be a parameter common to all sound generation channels.
The vertical axis represents the stroke (depth) of the “key or rotating member” 10 with the initial position (key release state) as the highest position and the full stroke position as the lowest position. The full stroke position at a key pressing position of 10 to 15 mm in the direction from the key tip 1b to the key fulcrum 1c is about 10 mm. In this figure, the first stroke position at which the first switch (SW1) is turned on / off and the second stroke position at which the second switch (SW2) is turned on / off are the actual key stroke positions. It is not an exact indication.

FIG. 3 is an operation explanatory diagram of the sound generation process and the mute process 1 of the embodiment shown in FIG.
FIG. 3A shows a sound generation process in the delayed sound generation mode, and FIG. 3B is an explanatory diagram showing a case of switching between the normal sound generation mode and the delayed sound generation mode. In either case, the mute process shows the operation of “mute process 1” corresponding to a typical operation mode.
When the delayed sound generation mode is set by the sound generation mode setting unit 14 in FIG. 2, the sound generation instruction unit 17 inputs a time-out signal of the timer 16.

In FIG. 3A, the “key or rotating member” 10 is rotated by the key pressing operation, reaches the full stroke position, and then returns to the initial position by the key releasing operation.
In this process, the stroke reached the second stroke position after the first switch (SW1) was turned on and the second switch (SW2) was turned on at the beginning after the key was pressed. It is detected. From this timing Ton2 (i), the timer 16 starts counting (current value TOND (i)), and outputs a timeout signal when the first predetermined time D1 (i) elapses.
The sound generation instruction unit 17 shown in FIG. 2 inputs this time-out signal and outputs a sound generation instruction (KON) designating the pitch assigned to the “key or rotating member” 10 to the sound source unit 13. The sound source unit 13 starts a tone generation process. Even if the tone generation process is started, depending on the tone, the rise of the volume envelope may be slow.
On the other hand, the key-pressing speed detection unit 15 selects “key or turn” according to the time difference from the timing Ton1 (i) at which the stroke reaches the first stroke position to the timing Ton2 (i) at which the stroke reaches the second stroke position. The key pressing speed V of the “moving member” 10 is detected, and this is output to the sound source unit 13 together with the sound generation instruction described above.

As described with reference to FIGS. 5, 6, and 11, it is desirable that the muffling process can cope with various performance modes. However, the “silence processing 1” shown in FIG. 3 corresponds to only a typical performance mode.
The mute instruction unit 20 shown in FIG. 2 is detected by turning off the first switch (SW1) when the “key or rotating member” 10 returns to the initial state by a key release operation. At the timing Toff1 (i) when the stroke position is returned, a sound mute instruction (KOF: key-off) is output to the sound source unit 13. The sound source unit 13 starts a mute process for the musical sound being generated. Note that even when the tone mute process is started, depending on the tone, the tone may not be interrupted immediately, and the decay period of the tone may start. In addition, a new musical tone may be generated at the time of key-off.

  As described above, when the first predetermined time D1 (i) elapses, not immediately after the second switch (SW2) 12 is turned on, the third switch is virtually Equivalent to being prepared. Here, since the value of the first predetermined time D1 (i) can be arbitrarily changed, the above-described virtual third switch can be installed at an arbitrary position. Therefore, it is possible to control sound generation, which is impossible with a key switch having a mechanical third switch. Actually, the first predetermined time D1 (i) is set so that the virtual third switch is installed between the second stroke position and the full stroke position.

Actually, the key pressing speed V is not necessarily constant. For this reason, when the first predetermined time D1 (i) is fixed, the stroke position (depth position) at which the sound generation is instructed changes.
Therefore, the first predetermined time D1 (i) may be controlled according to the key pressing speed V so that sound generation can be instructed at substantially the same stroke position (depth position) regardless of the key pressing speed V. At this time, instead of using the value of the key pressing speed V detected by the key pressing speed detection unit 15 as it is, the second switch (SW2) 12 is turned on based on the value of the key pressing speed V. A subsequent key pressing speed may be predicted, and this predicted value may be used.

In a normal electronic keyboard instrument, the structure and arrangement of the key switch are designed so that sound generation is started at a depth close to the full stroke position in accordance with the key operation of the acoustic piano.
On the other hand, in this embodiment, the key switch structure and arrangement may be such that the second stroke position is shallower than in the prior art (midway between the initial position and the full stroke position). To give a sounding instruction at a depth close to the full stroke position, the first predetermined time D1 (i) is lengthened. To give a sounding instruction at a shallow position, the first predetermined time D1 (i) is shortened. .
If the structure and arrangement of the key switch are designed so that the first stroke position is also shallower than the depth detected by the first switch of a normal electronic keyboard instrument, it is convenient for improving the accuracy of speed detection. It is.

The timing and stroke position for instructing pronunciation differ depending on the type of musical instrument. Therefore, even in an electronic keyboard instrument, in order to approximate the key operation mode of an acoustic instrument corresponding to a tone, even if the timing for instructing pronunciation is changed according to the tone (instrument tone) set for the tone to be generated Good.
Specifically, the first predetermined time D1 (i) may be changed in conjunction with the tone color designation of the musical tone generated by the sound source unit 13. For example, in order to issue a sound generation instruction at a shallow stroke position as in a pipe organ, the value of the first predetermined time D1 (i) is shortened.
If the pronunciation is started at a shallow position, even a performer with a weak key-pressing force such as an infant can easily perform. Also, if the performer prefers the staccato playing method, it is easier to perform if the start of pronunciation is performed at a relatively shallow position. Therefore, the value of the first predetermined time D1 (i) may be changed by designation by the player.

  When the performer repeatedly hits, the second switch (SW2) is turned on again after the second switch (SW2) is turned off, as indicated by a broken line in the figure. At this timing, sound generation is instructed. Such processing corresponding to continuous hitting is handled by a technique different from the present invention, and is not considered in the present invention.

In FIG. 3B, the operation in the normal sounding mode is added to the operation in the delayed sounding mode shown in FIG.
When the normal sound generation mode is set, the sound generation instruction unit 17 selects the output of the second switch (SW2) 12 and issues a sound generation instruction at the timing Ton2 (i) when the second stroke position is reached after the key depression is started. Is output.
As with the change of the first predetermined time D1 (i) described with reference to FIG. 3A, the setting of the normal sounding mode or the delayed sounding mode is linked to the specification of the timbre, or the performance. It is done by the designation by the person.
In the above description, the input of the sound generation instruction unit 17 is switched between the normal sound generation mode and the delayed sound generation mode. Instead of this, the sound generation instruction unit 17 always inputs the output of the timer 16, and this assumption is made. In the configuration, in the normal sound generation mode, the first predetermined time D1 (i) may be set to zero.

As shown in FIG. 3, when the key release operation is performed after the “key or rotating member” 10 reaches the full stroke position, the timing of the sound generation instruction (KON) is the stroke in the stroke of the key pressing operation. The value of the first predetermined time D1 (i) is designed to be between the stroke position 2 and the full stroke position. Therefore, the second switch (SW2) is in the on state at the timing of the sound generation instruction (KON).
In such a design, the timing Toff1 (i) when the first switch (SW1) is turned off at the time of the key release operation is after the timing of the sounding instruction (KON) and is sufficiently delayed, so the sounding period is not long. It will not be shortened.
However, when the key pressing of the “key or rotating member” 10 is shallow or the key is released quickly, delaying the timing of the sound generation instruction affects the mute operation.

FIG. 4 is an operation explanatory diagram of the sound generation process and the mute process 2 in the delayed sound generation mode of the embodiment shown in FIG.
FIG. 4A shows a first case of the silencing process 2, and FIG. 4B shows a second case of the silencing process 2.
As shown in the drawing, when the key release operation is performed at a position where the stroke is slightly larger (a slightly deeper position) than the second stroke position, there is a problem that the tone generation period becomes too short and the musical sound feels interrupted.

Therefore, the time difference determination unit 18 in FIG. 2 determines the time difference between the timing of the sound generation instruction (KON), that is, the timing of the timeout of the timer 16 and the timing Toff1 (i) when the first switch (SW1) 11 is turned off. Determine. The mute instruction unit 20 instructs the sound source unit 13 to mute the sound at a timing corresponding to the time difference described above.
In the case 1 of FIG. 4A, the timing Toff1 (i) at which the first switch (SW1) 11 is turned off from the timing when the second predetermined time D2 (i) has elapsed from the timing of the sound generation instruction (KON). Is later.
The time difference determination unit 18 in FIG. 2 determines that this is the case described above, and controls the mute instruction unit 20. The mute instruction unit 20 inputs the output of the first switch (SW1) 11, and gives a mute instruction (KOF) to the sound source unit 13 at the timing Toff1 (i) when the first switch (SW1) 11 is turned off. Output. As a result, the sounding instruction timing is the same as in the normal sounding mode, but a sounding period equal to or longer than the second predetermined time D2 (i) is obtained.
Since the case shown in FIG. 3 normally satisfies this condition, the condition of case 1 in FIG. 4A is satisfied and the same processing result is obtained.

On the other hand, in the case 2 shown in FIG. 4B, since the key release of the “key or rotating member” 10 is fast, the timing Toff1 (i) at which the first switch (SW1) 11 is turned off is sounded. This is a case where the second predetermined time D2 (i) has elapsed from the timing of the instruction (KON).
The time difference determination unit 18 in FIG. 2 determines that this is the case described above, and controls the mute instruction unit 20. The mute instruction unit 20 receives a timeout signal output from the timer (current value TOFFD (i)) 19. The timer 19 outputs a timeout signal at the timing when the second predetermined time D2 (i) has elapsed from the timeout signal of the timer 16.
Accordingly, the mute instruction unit 20 outputs a mute instruction (KOF) at the timing when the second predetermined time D2 (i) has elapsed from the timing of the sound generation instruction (KON).
As a result, the mute instruction (KOF) is output after the timing Toff1 (i) when the first switch (SW1) 11 is turned off, and the sound source unit 13 uses the second predetermined time D2 (i) as the sound generation period. Tones are played.

FIG. 5 is an operation explanatory diagram of the sound generation process and the mute process 3 in the delayed sound generation mode of the embodiment shown in FIG. This case is included in the second case of the silencing process 2 described with reference to FIG. That is, the timing Toff1 (i) when the first switch (SW1) 11 is turned off is before the timing when the second predetermined time D2 (i) has elapsed from the timing of the sound generation instruction (KON).
The time difference determination unit 18 in FIG. 2 determines that this is the case described above, and controls the mute instruction unit 20. The mute instruction unit 20 outputs a mute instruction (KOF) at the timing when the second predetermined time D2 (i) has elapsed from the timing of the sound generation instruction (KON). However, since the processing different from the above-described second case is performed inside the muffling instruction unit 20, it is a different case.

  In this example, when the delayed sound generation mode is set, the timing Toff1 (i) at which the stroke of the “key or rotating member” 10 returns to the first stroke position is sent to the sound source unit 13 by the sound generation instruction unit 17. This is the case before the sounding instruction (KON) timing, i.e., reverse.

  In normal performance control processing, it is premised that after a sound generation instruction (KON) information for a certain key is generated, a mute instruction (KOF) information for this key is generated. However, in the example shown in FIG. 5, after the mute instruction (KOF) information is created for a certain key first, the pronunciation instruction (KON) information for this key is created. Depending on the processing, normal processing may not be possible.

Therefore, when the mute instruction (KOF) information is created before the timing of the sound generation instruction (KON), the mute instruction (KOF) information is held (temporarily stored). The key buffer first stores information on the sound generation instruction (KON), and then holds (temporarily stores) the second predetermined time D2 (i) from the time when the sound generation instruction unit 17 issues the sound generation instruction. The information on the mute instruction (KOF) that has been stored is stored in the key buffer, and the mute instruction unit 20 outputs a mute instruction (KOF).
Therefore, the order in which the pronunciation instruction (KON) information and the mute instruction (KOF) information are stored in the key buffer is not reversed.

In the silencing process 2 shown in FIG. 4 and the silencing process 3 shown in FIG. 5 described above, it is desirable that the second predetermined time D2 (i) can be adjusted.
That is, in the same way as the first predetermined time D1 (i), the second predetermined time D2 (i) is set according to the tone (instrument tone) set for the musical tone to be generated and as specified by the player. The value may be changeable.
Further, the value of the second predetermined time D2 (i) may be set according to the length of the first predetermined time D1 (i). For example, the larger the value of the first predetermined time D1 (i), the larger the value of the second predetermined time D2 (i), or the first predetermined time D1 (i) and the second predetermined time D2 ( The value of i) may be matched.
Furthermore, the value of the second predetermined time D2 (i) may be different between the case of the mute process 2 shown in FIG. 4 and the case of the mute process 3 shown in FIG. For example, in the case of the silencing process 3 in which the order of creating the pronunciation instruction (KON) information and the silencing instruction (KOF) information is reversed, the value of the second predetermined time D2 (i) is decreased.

FIG. 6 is an operation explanatory diagram of a modified example of the sound generation process and the mute process in the delayed sound generation mode of the embodiment shown in FIG. In this case, the operation shown in FIGS. 3 and 4 is replaced. This will be described below with reference to FIG.
In this modification, the time difference determination unit 18 in FIG. 2 is not used. In the mute instruction unit 20, the timer 19 starts counting from the timing when the first switch (SW1) 11 is turned off by the connection shown by the virtual line 21 in the figure, and the timer 19 starts the second predetermined time D2. A timeout signal is output at the timing when (i) has elapsed.

Therefore, the mute instruction unit 20 generates the sound source at the timing when the second predetermined time D2 (i) has elapsed from the timing Toff1 (i) when the stroke of the “key or rotating member” 10 returns to the first stroke position. A mute instruction is output to the unit 13.
As a result, from “the timing when the first predetermined time D1 (i) has elapsed from the timing when the second switch (SW2) 12 is turned on” to “from the timing when the first switch (SW1) is turned off”. The sounding period is until “the timing when the second predetermined time D2 (i) has passed”.
When the first predetermined time D1 (i) and the second predetermined time D2 (i) described above are matched, the length of the sound generation period does not increase or decrease.

Also in this modified example, the setting values of the first predetermined time D1 (i) of the timer 16 and the second predetermined time D2 (i) of the timer 19 shown in FIG. 2 can be arbitrarily changed. It is. The second predetermined time D2 (i) in FIG. 6 uses the same name as the second predetermined time D2 (i) in FIGS. 3 and 4 for convenience. However, since both are of different embodiments, it is not necessary to use the same value.
The set values of the first predetermined time D1 (i) and the second predetermined time D2 (i) of the timer 19 are set according to the tone color setting for the tone generated by the sound source unit 13 or as specified by the player. It may be changed.

The set values of the first predetermined time D1 (i) and the second predetermined time D2 (i) shown in FIG. 2 include the case of the modified example of the silencing process described with reference to FIG. This is set for each of a plurality of “keys or rotating members” 10 arranged on the keyboard.
As a result, it is possible to cope with the difference in structure of the “key or rotating member” 10, that is, the type of white key or black key, the variation in manufacturing of each part, and the secular change of each part. The difference between the plurality of “keys or rotating members” 10 can be eliminated with respect to the timing of the sounding instruction and the timing of the mute instruction.

Similarly, the “key pressing speed detector” 15 shown in FIG. 2 performs the second operation from the timing Ton1 (i) when the stroke detected by the first switch (SW1) 11 reaches the first stroke position. The key pressing speed V of the “key or rotating member” 10 is detected according to the time difference until the timing Ton2 (i) when the stroke detected by the switch (SW2) 12 reaches the second stroke position. Therefore, by correcting the time difference described above for each of a plurality of keys or rotating members arranged on the keyboard of the electronic keyboard instrument, each key or rotating member is detected by detecting a key pressing speed. "According to 10, it is possible to accurately detect the key pressing speed.
In addition, the set values of the first predetermined time D1 (i) and the second predetermined time D2 (i) are changed according to the pitch assigned to the “key or rotating member” 10. (So-called “key scaling” technology). For example, the sound generation start timing can be advanced little by little as the pitch to be generated increases.

FIG. 7 is a hardware configuration diagram for realizing the musical tone control function of the embodiment shown in FIG. 2 using a computer.
The bus 31 interconnects a plurality of hardware blocks including a CPU (Central Processing Unit) 32 and transfers data and programs between the hardware blocks under the control of the CPU 32.
A ROM (Read Only Memory) 33 is, for example, a flash ROM (Electrically Erasable and Programmable ROM), which stores programs, conversion tables, parameter setting data, song data files, accompaniment data files, and the like. Holds when the power is turned off.
The CPU 32 provides a work area in a RAM (Random Access Memory) 34 and executes a program to perform overall control for uniformly executing the functions of the hardware blocks and the transfer between the hardware blocks. It is. The time interrupt process is executed at the interrupt timing indicated by the timer 35.

In the work area of the RAM 34, for example, a key buffer, a time difference measurement buffer, a setting register, a flag, and a counter area are provided for each sound generation channel (i). The sound generation channel number i is, for example, i = 0-15.
In the key buffer, for example, the key number KC (i), the switch event (ON / OFF) of the first switch (SW1) 11, the second switch (SW2) 12, corresponding to the sound channel (i), The key pressing speed V (i) and the key event (key on / key off) of the key are stored.
The time difference measurement buffer stores, for example, event timings Ton1 (i), Ton2 (i), Toff1 (i), and Toff2 (i) of switch events and key events corresponding to the sound generation channel number (i). .
In the setting register, the values of the first predetermined time D1 (i) and the second predetermined time D2 (i) are stored in correspondence with the sound generation channel number (i).
In the counter area, current values T (i), elapse time counter 75, on-counter 76 (timer 16 in FIG. 2) and off-counter 77 (timer 19 in FIG. 2), which will be described later with reference to FIG. TOND (i) and TOFFD (i) are stored.

The clock circuit 36 manages the current date and time even when the power is off.
The external storage device 37 is an HDD (hard magnetic disk drive), a USB (Universal Serial Bus) memory, or the like, and can store programs and data in place of the ROM 33 described above.
The programs and data stored in the ROM 33, the external storage device 37, and the like described above can be stored in the server device 40, and the program and data can be updated via the communication network 41 and the network interface 42.
In addition, a MIDI signal transferred from another MIDI device 38 is input via the MIDI interface 39 and played with the electronic keyboard instrument, or conversely, the MIDI signal output when playing with the electronic keyboard instrument. The signal can be transferred to another MIDI device 38.

As a performance operator, a pedal device 43 and a keyboard 45 are shown. These operations are detected by the detection circuits 44 and 46 and output to the bus 31. The pedal device 43 is a performance operator such as a damper pedal, a sostenuto pedal, or a soft pedal, which is controlled by foot operation.
The keyboard 45 includes a pedal keyboard for performing foot operation in addition to a hand keyboard including a plurality of white keys and black keys. The present invention is applied to the key pressing / releasing operation for the hand keyboard, but may also be applied to the key pressing / releasing operation for the pedal keyboard.
The panel operator 47 is switches for mode selection and control parameter setting by the performer, and knobs for variably adjusting setting values such as a volume level. The operation of the panel operator 47 is detected by the detection circuit 48 and output to the bus 31. The display circuit 49 controls the display 50 such as a liquid crystal display and an LED indicator, and transfers display image data and lighting control data in order to input a setting operation.

The tone generator circuit 51 corresponds to the function of the tone generator unit 13 shown in FIG. 2, and is generally a tone generator LSI (Large Scale Integrated Circuit), which is a tone generator parameter created based on performance data or performance data. , And a musical tone waveform signal is generated based on these and output to the effect circuit 52. Depending on the specifications of the tone generator 13, one of performance data and tone generator parameters is used as the sound generation instruction (KON), mute instruction (KOF), and key depression speed (V) in FIG.
The effect circuit 52 imparts an effect such as reverberation to the musical sound waveform signal and outputs it to the sound system 53. The sound system 53 adjusts the volume of the musical sound signal, amplifies it, and outputs it to a speaker, headphones, or the like.

The CPU 32 outputs the sound source parameters created based on the timbre set by the panel operator 47 to the sound source circuit 51. The CPU 32 realizes musical tone control functions such as sound generation instruction, key depression speed detection, and mute instruction shown in FIG. 2 by executing a computer program, and transfers the sound generation instruction, mute instruction, and key depression speed to the tone generator circuit 51. To do.
A certain “key or rotating member” 10 in the keyboard 45 has some event (on / off event of the first switch (SW1) 11 and second switch (SW2) 12 and key on / key off event)). When the sound generation channel (i) has already been assigned to the “key or rotating member” 10, the event is written in the key buffer of the sound generation channel (i) already assigned.
On the other hand, if the sound generation channel (i) has not yet been assigned to the “key or rotating member” 10 and the sound generation channel (i) has a free space, a new sound generation channel is assigned and the event is stored in the key buffer. Write.
In the example of FIG. 1, a new tone generation channel is assigned when an on event of the first switch (SW1) 11 occurs. However, for example, when it is detected by an electrostatic sensor or the like that the performer's finger has touched the key body 1a, a sound generation channel is newly allocated when an electrostatic sensor contact detection event occurs.

The sound source unit 13 receives a sound generation instruction (KON) in a certain sound generation channel (i), starts generating a musical tone signal having a pitch assigned to the sound generation channel (i), and then silences the sound generation channel (i). Enter the instruction (KOF) to start the mute process.
The CPU 32 obtains sound source state data such as whether or not the tone generation circuit 51 is in the process of generating a musical tone (key-on state) and the current value of the amplitude envelope during the generation of the musical tone. For example, when the tone generation process is completed, the sound generation channel (i) is made free.
The hardware configuration shown in FIG. 7 was an electronic keyboard instrument. However, the invention of the present application may be a keyboard device for an electronic musical instrument that does not include the tone generator circuit 51, the effect circuit 52, and the sound system 53.

FIG. 8 is a flowchart showing an example of an operation for realizing the musical tone control function in the embodiment shown in FIG. 2 using a microcomputer.
A description of the sound channel assignment process is omitted. Therefore, it is assumed that the sound generation channel i is fixedly assigned to each “key or rotating member” 10.
FIG. 8A shows the main processing. When the power is turned on, the program is loaded from the ROM 33 of FIG. 7 to the RAM 34 and started.
In S61, the electronic keyboard instrument is initialized. The default value of the musical tone control parameter or the value used last time is loaded into the RAM 34 from the ROM 33 or the external storage device 37. The performance mode is initially set to the keyboard performance mode (KP = 1). The sound generation mode is initially set to the normal sound generation mode.
In S <b> 62, the performer operates the panel operation element 47 to input values of various musical tone control parameters and store them in the work area of the RAM 34. The performance mode is also set, and KP = 1 is set when the performer specifies the keyboard performance mode, and KP = 0 is set when the music data file automatic performance mode is specified.
In S63, a key pressing process and a key releasing process are executed. In S64, other processes such as an automatic performance process for a music data file are executed, and the process returns to S62.

FIG. 8B is a flowchart showing a sound generation mode selection process by the performer as one of the processes executed in S62 of FIG.
In S71, if the performer has instructed the delayed sound generation process, the process proceeds to S72 and the flag ND is set to 1. Otherwise, the process proceeds to S73 and the flag ND is set to 0.
Instead of FIG. 8B, the sound generation mode may be automatically set in conjunction with the tone color setting operation by the performer.

FIG. 8C is an explanatory diagram showing an example of a software counter used in the following flowchart. The software counter is, for example, a program that starts at a predetermined interrupt time interval and adds a predetermined value Tc.
In the elapsed time counter 75, the current value T (i) represents the elapsed time from the start of the key pressing process. It is provided for each pronunciation channel (i).
The on-counter 76 represents the elapsed time after the on-event of the second switch (SW2) 12, whose current value TOND (i). The function of the timer 16 in FIG. 2 is realized.
In the off counter 77, the current value TOFFD (i) represents the elapsed time after the sounding instruction (KON) timing. In addition to realizing the function of the timer 19 in FIG. 2, the following operation example is also used to realize the function of the time difference determination unit 18 in FIG.

FIG. 9 is a flowchart showing details of the key press / key release process (S63) in the main process of FIG. This is executed when the keyboard performance mode is set in S62 or when the keyboard performance mode is already set (KP = 1).
Hereinafter, the performance control operation for one “key or rotating member” 10 assigned to the channel (i) will be described with reference to FIGS.
In S81, it is determined whether or not the flag KP = 0 (automatic performance mode or the like). If KP = 0, the process proceeds to the next S82, and if KP = 0, the process proceeds to S83.
In S82, KP = 1 (keyboard performance mode) is set, and various parameter values and flags such as the counters shown in FIG.

In S83, if the first switch (SW1) is turned on, the process proceeds to the next S84, and if not, the process returns to S83. In S84, the current value T (i) of the elapsed time counter 75 is started from the initial value 0.
In S85, the initial value 0 is input to Ton1 (i), the process proceeds to S86, the first switch flag SW1 (i) = 1 is set, and the process proceeds to S87.

In S87, if the second switch (SW2) 12 is turned on, the process proceeds to the next S88, and if not, the process proceeds to S89. In S88, the current value T (i) of the elapsed time counter 75 is input to Ton2 (i). In S90, the second switch flag SW2 (i) = 1 is set, and the process proceeds to S91.
In S91, using the Ton1 (i) and Ton2 (i) acquired in S85 and S88, the timing when the second switch (SW2) is turned on from the timing when the first switch (SW1) is turned on. Time difference (Ton2 (i) −Ton1 (i)) is calculated, and the correspondence table TableV of this time difference and key pressing speed V is referred to, and the key pressing speed TableV (Ton2 (i) −Ton1 ( The value of i)) is acquired, and this is set as the key pressing speed V (i), and the process proceeds to S102 in FIG.

On the other hand, if there is no ON event in the second switch (SW2) in S87, the process proceeds to S89, and if the first switch (SW1) is turned off, the process proceeds to the next S92. Otherwise, the process returns to S87.
In S92, the first switch flag SW1 (i) is set to 0. In S93, the current value T (i) of the elapsed time counter 75 is input to Toff1 (i), and the process returns to S64 in FIG. In this case, the stroke returns to the first stroke position again without reaching the second stroke position.
The processes of S83 to S93 described above are processes for detecting that the stroke has reached the second stroke position. Once the key pressing process is started, since KP = 1, S82 is skipped thereafter until the keyboard performance mode is canceled.

FIG. 10 is a flowchart of the key pressing / releasing process subsequent to FIG.
In S102, when ND set in S72 or S73 of FIG. 8B is 0 (normal sounding mode), the process proceeds to the next S103, and when ND is 1 (delayed sounding mode), the process proceeds to S104.
In S103, a normal sound generation process using the key switch 4 (FIG. 1) having two movable contacts is executed. That is, as shown in FIG. 3B, a sounding start instruction is output to the sound source circuit 51 together with the key pressing speed V (i) by the ON event of the second switch (SW2). In S105, a mute instruction (KOF) is output to the sound source circuit 51 by a normal mute process, that is, an off event of the first switch (SW1), and the process returns to S64 in FIG.

On the other hand, in the delayed sound generation mode, the following S104 and S106 to S116 correspond to the function of the sound generation instruction unit 17 in FIG.
In S104, the first delay time table TableD1 is referred to in order to set the first predetermined time D1 (i) shown in FIG. Table D1 is a table for obtaining a first predetermined time D1 (i) corresponding to the key pressing speed V (i) obtained in S91 of FIG. With reference to this table, it is possible to estimate the time until the stroke of the “key or rotating member” 10 moves from the second stroke position to a predetermined deep stroke position.
In S106, the current value TOND (i) of the on-counter 76 is started from the initial value 0, and the process proceeds to S107.

In S107, if the second switch (SW2) is OFF, the process proceeds to the next S108, and if not, the process proceeds to S109. In S108, the second switch flag SW2 (i) is set to 0, and in S110, the current value T (i) of the elapsed time counter 75 is input to Toff2 (i).
In S111, if the first switch (SW1) is turned off, the process proceeds to S112, and if not, the process proceeds to S109. In S112, the first switch flag SW1 (i) = 0 is set. In S113, the current value T (i) of the elapsed time counter 75 is input to Toff1 (i). In S114, the mute instruction (KOF) information is not temporarily stored in the key buffer of the RAM 34 in FIG. 8, but temporarily stored in an area other than the key buffer.

In S109, if the current value TOND (i) of the on-counter 76 is equal to or longer than the first predetermined time D1 (i) shown in FIG. 2 set in S104, the process proceeds to the next S115. If not, the process returns to S107.
In S115, the sound generation instruction (KON) and the key pressing speed V (i) are output to the sound source circuit 51. In S116, the on-counter 76 is reset (current value TOND (i) = 0).

The next steps S117 and S118 are processing for determining a condition for case division when executing different silencing processes in the silencing instruction unit 20.
In this flowchart, the mute process 1 corresponding to the typical operation mode shown in FIG. 3, the mute process 2 corresponding to the different operation mode shown in FIG. 4, and the mute process 2 shown in FIG. A case-by-case description will be given for the mute processing 3 that deals with the operation mode in which the above problem occurs.
However, as described in the operation shown in FIG. 4, the silencing process 1 usually obtains the same result even when the silencing process 2 is satisfied. May be.
If an electronic keyboard instrument that only supports typical operation modes is acceptable, the mute processing 1 may be performed at any time without dividing the case.

Case classification is performed as follows.
First, at the timing of the sound generation instruction (KON), the second switch (SW2) is turned on (the first switch (SW1) is also turned on). That is, as shown in FIG. 3, when the stroke is larger (deeper) than the second stroke position at this timing, the “silence processing 1” of S119 is executed, and then the process proceeds to S64 of FIG. Return processing.

  Second, at the timing of the sound generation instruction (KON), the second switch (SW2) is off, but the first switch (SW1) is on. That is, as shown in FIGS. 4A and 4B, when the stroke is between the first stroke position and the second stroke position at this timing, the “silence processing 2” in S120. Then, the process returns to S64 in FIG.

  Third, at the timing of the sound generation instruction (KON), the first switch (SW1) is off (the second switch (SW2) is also off). That is, at this timing, when the stroke is smaller (shallow) than the first stroke position, the “silence processing 3” in S121 is executed, and the process returns to S64 in FIG.

FIG. 11 is a flowchart of the key pressing / releasing process subsequent to FIG.
FIG. 11A shows details of S119 “silence processing 1” in FIG. 11, and corresponds to FIG.
In S131, if the second switch (SW2) is turned off, the process proceeds to the next S132, and if not, the process returns to S131. In S132, the current value T (i) of the elapsed time counter 75 is input to Toff2 (i). In S133, the second switch flag SW2 (i) = 0 is set, and the process proceeds to S134.

In S134, when the second switch (SW2) 12 is turned on, that is, when the stroke is again larger than the second stroke position, the process proceeds to S135, otherwise, the process proceeds to the next S137. Proceed with the process.
In S135, the second switch flag SW2 (i) is set to 1. In S136, the “continuous hitting process” and the like are executed, and then the process returns to S64 in FIG. The description of “continuous hit processing” is omitted.
On the other hand, when the first switch (SW1) 11 is turned off in S137, that is, when the stroke is smaller than the first stroke position, the process proceeds to the next S138, otherwise, The process returns to S134.
In S138, 0 is input to the first switch flag SW1 (i). In S139, the current value T (i) of the elapsed time counter 75 is input to Toff1 (i). In S140, a mute instruction (KOF) is sent to the sound source. The data is output to the circuit 51, and the process returns to S64 of FIG.

FIG. 11B shows details of S120 “silence processing 2” in FIG. 11, and corresponds to FIG.
In S151, the current value TOFFD (i) of the off counter 77 is started from the initial value 0. If the second switch (SW2) is turned on in S152, the process proceeds to S153, and if not, the process proceeds to S155. In S153, the second switch flag SW2 (i) is set to 1. In S154, "continuous hitting process" or the like is executed, and the process returns to S64 in FIG.
On the other hand, if the first switch (SW1) is turned off in S155, the process proceeds to the next S156, and if not, the process returns to S152. In S156, the current value T (i) of the elapsed time counter 75 is input to Toff1 (i), and the first switch flag SW1 (i) = 0 is set in S157.

In the next S158, it is determined whether or not the current value TOFFD (i) of the off-counter 77 is equal to or greater than the second predetermined time D2 (i). If so, the process proceeds to S159. If not, the process returns to S158. The process of S158 corresponds to the function of the time difference determination unit 18 in FIG. In this flowchart, the predetermined time used as the reference for determining the time difference is made to coincide with the second predetermined time D2 (i) of the timer 19 in FIG.
Although not employed in this flowchart, the tone color set for the tone to be generated and the key pressing speed V (i) are the same as the first predetermined time D1 (i) set in S104 of FIG. ) Or the like, the predetermined time as a reference for determining the time difference may be changed.

In S159, the off counter 77 is reset and its value TOFFD (i) is set to the initial value 0. In S160, a mute instruction is output to the sound source circuit 51, and the process returns to S64 in FIG.
Here, as a processing path to S160, when TOFFD (i) has already exceeded the second predetermined time D2 (i) when the first switch (SW1) is turned off in S155, the process proceeds to S158. S159 and S160 are immediately reached. This case corresponds to the operation shown in FIG.
On the other hand, when the first switch (SW1) is turned off in S155, if TOFFD (i) has not yet exceeded the second predetermined time D2 (i), TOFFD (i) is the second predetermined time. Step S158 is repeated until D2 (i) is exceeded. This case corresponds to the operation shown in FIG.

FIG. 11C shows details of S121 “silence processing 3” in FIG. 10, and corresponds to FIG.
In S171, the current value TOFFD (i) of the off counter 77 is started from the initial value 0. In S172, it is determined whether or not the current value TOFFD (i) of the off-counter 77 is equal to or greater than the second predetermined time D2 (i). If so, the process proceeds to the next S173, and so on. If not, the process returns to S172. This S172 is the same processing as S158 in FIG. In this flowchart, the second predetermined time D2 (i) is set to the same value as the second predetermined time D2 (i) in S158, and corresponds to the “second predetermined time” in the timer 19 shown in FIG. Then, a value is set according to the tone color, the key pressing speed V (i), and the like.
In S173, the current value TOFFD (i) of the off counter 77 is set to the initial value 0. In S174, the information of the mute instruction (KON) stored in S114 of FIG. 10 is read, and the mute instruction (KON) is stored in the key buffer of the RAM 34. ) Is written and output to the tone generator circuit 51, and the process returns to S64 of FIG.

In the above description, the elapsed time counter 75 is set to the initial value 0 at the time of starting (S84 in FIG. 9), but in S93 in FIG. 9, S105 and S113 in FIG. 10, and S139 and S156 in FIG. The current value T (i) of the elapsed time counter 75 may be input to Toff1 (i) and then reset to the initial value 0.
In the above description, the elapsed time counter 75 has started from the timing (S83 in FIG. 9) when the first switch (SW1) is turned on.
Alternatively, if there is a sensor (for example, an electrostatic sensor) that first detects the player's operation before the first switch (SW1) is turned on, the elapsed time counter 75 is first set to the player. You may start by the event which detected operation of. In this case, the current value T (i) of the elapsed time counter 75 is input in S85 of FIG.
Further, the elapsed time counter 75 may be common to all keys, and for example, the elapsed time counter 75 may be started from the keyboard performance start timing (S82 in FIG. 9).

DESCRIPTION OF SYMBOLS 1 ... Key, 1a ... Key main-body part, 1b ... Key tip part, 1c ... Key fulcrum part, 1d ... 1st actuator, 1e ... 2nd actuator, 2 ... Key frame, 2a ... Key support part, 3 ... Key Switch circuit board, 4 ... key switch, 4a ... outer dome, 4b ... driven part, 4c ... first inner dome, 4d ... second inner dome, 4e ... first movable contact, 4f ... second movable Contact point, 4g, first fixed contact point, 4h, second fixed contact point,
DESCRIPTION OF SYMBOLS 10 ... Key or rotation member, 11 ... 1st switch (SW1), 12 ... 2nd switch (SW2), 13 ... Sound source part, 14 ... Sound generation mode setting part, 15 ... Key speed detection part, 16 ... Timer , 17 ... Sound generation instruction section, 18 ... Time difference determination section, 19 ... Timer, 20 ... Mute instruction section, 21 ... Virtual line,
75 ... elapsed time counter, 76 ... on counter, 77 ... off counter

Claims (7)

The stroke of the key that is depressed / released by the performer or the stroke of the rotating member that rotates in conjunction with the depression / release of the key is the first stroke position, the first stroke position. A first switch and a second switch that are turned on and off when the second stroke position has a larger stroke than
A time difference from the timing at which the stroke detected by the first switch reaches the first stroke position to the timing at which the stroke detected by the second switch reaches the second stroke position. A performance control means for detecting a key pressing speed of the key or the rotating member in response,
In an electronic keyboard instrument having a sound source that controls the volume of a musical sound to be generated according to the key pressing speed detected by the performance control means,
The performance control means has pronunciation instruction means,
The sound generation instruction means sounds the musical sound to the sound source at a timing at which a first predetermined time has elapsed from a timing at which the stroke detected by the second switch reaches the second stroke position. Direct,
The value of the first predetermined time is variably set.
An electronic keyboard instrument characterized by this. The sound generation instruction means changes the first predetermined time according to the key pressing speed;
The electronic keyboard instrument according to claim 1, wherein: The performance control means has sound generation mode setting means,
The sounding mode setting means sets one of the normal sounding mode and the delayed sounding mode,
When the normal sound generation mode is set, the sound generation instruction means sounds the musical sound to the sound source at a timing when the stroke detected by the second switch reaches the second stroke position. Instruct,
The electronic keyboard instrument according to claim 1 or 2, wherein The pronunciation instruction means changes the timing for instructing the sound source to generate the musical sound according to the tone color of the musical sound to be generated by the sound source.
The electronic keyboard instrument according to any one of claims 1 to 3, wherein The performance control means has a mute instruction means,
The mute instruction means includes a timing at which the sound generation instruction means instructs the sound source to generate the musical sound, and a timing at which the stroke detected by the first switch returns to the first stroke position. Instructing the sound source to mute the sound at a timing determined according to the time difference,
The electronic keyboard instrument according to any one of claims 1 to 4, wherein the electronic keyboard instrument is any one of the above. In the mute instruction means, the timing at which the stroke detected by the first switch returns to the first stroke position is before the timing at which the sound generation instruction means instructs the sound source to produce the musical sound. In the case, the mute instruction information is temporarily stored, and the mute instruction information temporarily stored at a timing when a second predetermined time has elapsed from the timing at which the sound generation instruction means instructs the sound source to generate the musical sound, Instructing the sound source unit to mute the musical sound,
The electronic keyboard instrument according to claim 5, wherein: The performance control means has a mute instruction means,
The mute instruction means silences the musical sound to the sound source unit at a timing when a second predetermined time has elapsed from the timing at which the stroke detected by the first switch returns to the first stroke position. Direct,
The first predetermined time and the second predetermined time are set for each of the plurality of keys or the rotating members arranged on the keyboard of the electronic keyboard instrument,
Detection of the key pressing speed of the key or the rotating member is detected after correcting the time difference for each of the plurality of keys or the rotating members arranged on the keyboard of the electronic keyboard instrument.
The electronic keyboard instrument according to any one of claims 1 to 4, wherein the electronic keyboard instrument is any one of the above.

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