JPS59113493A - Electronic musical instrument - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electronic musical instrument, and particularly to improving the touch response effect.

Generally, in electronic musical instruments, in order to generate musical tones similar to the musical tones of natural musical instruments, an envelope as shown in Fig. 1) or Fig. 1(C) is given to the musical sound signal. . The envelope waveform shown in Figure 1 CB) is given when generating a musical tone similar to a sustained-tone natural instrument such as an organ, flute, violin, etc. The envelope waveform shown in Figure 1 is given when the ridge key is pressed at time t1. When the key-on signal KON rises, the attack waveform section W1
After rising rapidly, the TIG waveform part W2 passes through to the sustained waveform part W3 having a sustained level LS slightly lower than the peak level LA (this is called the attack level) of the attack waveform part Wl. When the key is released at time t2, the release waveform portion W4 slowly returns to the 0 level. The 00 envelope waveform in Figure 1 is used when generating musical tones similar to those of natural instruments with attenuated sounds, such as pianos and harpsichords. It has a configuration that does not have the waveform portion W3.

An envelope signal V having such an envelope waveform
In the electronic musical instrument shown in FIG. 2, L is generated in an envelope signal generating circuit 2 provided in a musical tone signal generating section 1 and is applied to a musical tone signal generating circuit 3. The musical tone signal generation circuit 3 has a tone pitch corresponding to the key code signal KCK indicating the pressed key on the keyboard 4 output from the key press detection circuit 5, and also corresponds to the tone selection signal TC given from the tone selection circuit 6. A musical tone signal TS having a tone color is generated and applied to a sound system 7.

Envelope signal generation circuit 2 detects key press L! The envelope signal V is generated based on the key-on signal KON from the 2i path 5.
In addition to determining the timing of the occurrence and termination of L, each parameter (attack level, sustain level, attack time, decay time, etc.) of the envelope waveform is determined according to the timbre selected by the timbre selection signal TC. , An amplitude envelope is given to the musical tone signal generated in the musical tone signal generation circuit 3 by the envelope signal VL thus generated.

In the electronic musical instrument configured as described above, a touch response control circuit 8fI is provided to perform initial touch control (control that changes the volume of musical tones in response to the speed of key presses, etc.) and after touch control according to the young wife. There are devices that can perform touch response control such as control (control that changes the volume of musical tones depending on the pressure or the like during key depression). In this case, the player's key operations are converted into electrical touch data by the touch detection section 9 and provided to the touch response control circuit 8.

By the way, in the conventional touch response control circuit 8, the touch open side signal 81) obtained from the touch data arriving from the touch detection section 9 is added to the envelope signal VL of the envelope signal generation circuit 2, thereby generating the touch data. Envelope signal vL that changes according to: <
vi, + Sl > obtained.

Therefore, the signal level of the envelope signal VL' is higher when the touch control signal S1 is generated than when the touch control signal S1 is not generated. The result was a kasu-kettle that fluctuated depending on whether the process was carried out or not.

If KWDJ with such a volume is left unattended, the volume will become unnaturally high when touch response control # is selected, and conversely, the volume will become unnaturally low when touch response control is not selected. In particular, even if the key touch operation is weakened, the unnaturalness in which the volume becomes thicker than when touch response control is not selected is undesirable from the viewpoint of performance performance.

In order to solve this problem, in the past, the volume was corrected by manually adjusting the volume adjustment volume provided in the sound system 7 each time in response to the selection state of the touch response control.

However, this kind of rA adjustment operation forces the music player to perform complicated operations, and it is actually difficult to adjust the volume to the optimum level in relation to the timbre with manual adjustment operations, and therefore the musical sound may be unnatural. It is still not enough to eliminate the problem.

This invention has been made in consideration of the above points, and by automatically attenuating the volume of musical tones by a predetermined amount when touch response control is selected, unnatural volume fluctuations in the generated musical tones are caused. The purpose of this project is to propose an electronic musical instrument that eliminates this problem.

Furthermore, in a state in which an amplitude modulation effect is applied to a musical tone, if touch response control (aftertouch control) is selected at the same time, the modulation depth of the amplitude modulation is compressed (suppressed). This paper attempts to propose an electronic musical instrument in which response control is strongly expressed, thereby making it easier to add touch response effects to musical sounds.

An embodiment of the present invention will be described in detail below with reference to the drawings. In this embodiment, the envelope signal generation circuit 2 in FIG.
As shown in FIG. 3, there is an envelope signal forming section 11 that forms the envelope signal VL by calculating a change value with respect to the current value of the envelope signal VL, and the calculation timing. It has a calculation timing setting section 12 that determines the calculation timing, and a target value setting section 13 that sets the target value used in the calculation.

Further, as a part forming the touch response control circuit 11I2)8 in FIG. Aftertouch control signal AT corresponding to touch
and an after control circuit 15 that generates an after control signal As containing C and amplitude modulation control 1 signal AMC, and attenuates the signal level of the envelope signal VL by a predetermined amount when initial touch control 1 and after touch open side 1 are selected. The touch offset control circuit 16 generates a touch offset control signal TOF (this is called a touch offset).

The envelope signal forming section 11 includes a digital arithmetic circuit 6
For example, as described above with reference to FIG. 1, the calculation operation can generate an envelope signal VL in which the attack waveform portion W1 rises exponentially and the attack waveform portion W2 and release waveform sW4 fall linearly. .

The arithmetic circuit 25 receives the arithmetic output signal AD as current value data at one input terminal A, and receives the change value data signal VD at the other input terminal B, and changes it into an envelope signal VL according to the content of the arithmetic designation signal UD. The value data signal VD is added or subtracted, and the result of the 7 operations is output as an envelope signal VL in the form of a 9-bit parallel digital signal, for example, via a shift register (1 stage, 9 bits) 26'it.

The envelope signal VL is fed back to the input terminal AK of the arithmetic circuit 60 as described above, and is also fed back to the upper three input terminals of the arithmetic circuit 60 as described above.
The bit is given to the change value switching circuit n as a judgment data signal CT.
ooJ, roolJ.

"0IOJ, rOJIJ...[IIIJ
(i.e. in decimal numbers rOJ, rlJ, r2J
, r: 3J...-'7'), the eight output lines to, tl, t
2, t3...tl, and these output lines 10
, 11, 12, t3, . . . , change value data corresponding to the change value designation outputs occurring at tl are generated from the change value data generation circuit side.

Change value data generation circuit For example, change value data rIJ
, r2J, [J, rsJ, "16J
, r32J.

The output line to
, 11, t2, 13... When the specified output is obtained at t7, the gate circuit 29 sends a change value data signal v1) containing change value data determined according to the state specified by the state signal ST. It is applied to the input terminal B of the arithmetic circuit 2 via.

Here, the state signal ST is generated once in state control W630. Addition of state control 1 circuit: - When a sustained tone tone is specified by the tone selection signal TC. - While forming the attack waveform part W1 as shown in ) in Fig. 1, the state signal STY is added to the attack state SO, and then The waveform part W2 (state 511) and the waveform part W2 (state 511) and
While forming the iL waveform 8W3 (state 512), the state signal ST is set to the decay-sustained state S1, and then, while forming the release waveform portion W4, the state signal ST is set to the decay-sustained state S1.
T is a release stay) 82, and other standby states are set to a standby state S3. At the same time, the state control circuit (material) outputs a gate control signal SO8 at 1 pm when it enters the sustaining state S12 which forms the sustaining waveform portion W3 among the standby state S3 and the decay-sustaining state S1.
? : Set to logic "1" and set gate control signal 1 signal SUS to logic "0" at the timing of entering attack state SO and release state S2, respectively. Furthermore, between the state control circuits, the contents of the operation designation signal UL) are added when in the attack state SO, and are subtracted by 1 when in the decay-sustained state S1 and release state S2. Furthermore, the state open side 1 circuit I sends out a reset signal R8 at the timing of entering the attack state SO from the standby state S3.

On the other hand, when a decreasing tone type tone is specified by tone selection No. 16 TC, the state control circuit 30 performs a decay state in the decay-sustained state S1.
11 is completed, the sustained stay) 812'& jumps to the release state S2, thereby forming an envelope waveform (Ω in FIG. 1) that does not have the sustained waveform portion W3.

Change value data generation circuit A, when the state signal ST specifies the attack state SO, outputs 1 and t respectively.
o, 11, t2, t3... Each time a change value designation output occurs at t7, as shown in Figure 4, [64J, r+i4J, r3
2J, r16J... Generates a change value data signal VD whose change value data is "1". Also, when the state signal ST specifies SL (de1), it becomes "1".
generates a change value data signal VD whose change value data is
Similarly, when the state signal ST specifies release stay) S2 and standby stay) S3, r-IJ respectively.

Variation value data No. 46 VD having a variation value of "0" is generated.

This change value data signal V'D is determined by the operation timing pulse signal CL generated in the timing section 12 and obtained through the AND gate 31.
The signal is applied to the arithmetic circuit 5 through the gate circuit 29 which is connected to the gate circuit 29. Here, the gate opening j signal SO8 generated in the AND gate 31 and the state control circuit 30 is applied to the inverter 3.
2, inverted and given, sustained stay) 812
And in the standby state, the gate control signal SUS is logic “1”
As a result, the AND gate 31 closes and prevents the calculation timing pulse signal CL from passing through, thereby preventing the supply of the change value data signal VD to the calculation circuit section.

Further, the arithmetic circuit 5 outputs an envelope signal V when the content specifies an addition operation according to the content of the arithmetic designation signal UD.
The change value data of the change value data signal VD is added to the current value data of L. Conversely, when the subtraction operation is specified, the change value data is subtracted.

In this way, in the arithmetic circuit section, in a state where the state signal ST specifies the attack state 80, the addition operation is specified by the arithmetic designation signal UD, so that the contents of the judgment data signal CT become l-000j and l'-. 001J
, roloJ, rollJ...JII
IJ (rOJ, rlJ, r2J in decimal
, r3 lower ... "7"), and therefore the contents of the entire 9-bit envelope signal VL are "0" to [63J, [644 to [12] as shown in FIG.
7J, r128J ~ "191", "192" ~ "
255''... When passing through the area of [448J~)'511J, change value data [4J, r3
zJ, [J... "1" is added each time the calculation timing pulse signal CL is given to the gate circuit 29, and as a result, the value of the envelope signal VL increases as shown in FIG. As the value increases, the value rises almost exponentially.

In addition, when the state signal ST specifies the dig 1-sustained state SJ or the release state S2, the arithmetic circuit 5 is configured to constantly change the constant value "1" by specifying the subtraction operation by the arithmetic designation signal UD. The value data signal VD (which does not change even if the change value designation output of lines tO to t7 is switched) is subtracted every time the calculation timing pulse signal CL is applied to the gate circuit 29, and as a result, the envelope signal VL is linearly decrease to

Furthermore, the arithmetic circuit 25 determines that the state signal ST is
When the gate circuit 29 closes based on the signal SUS in the state specified by sustain state S1 or standby state S3', the envelope signal vL is maintained at a constant sustain level LS or 0 level.

Further, the envelope signal VL is compared with the target value data coefficient TG sent from the target value setting section 13 in the comparator circuit 33, and the state control circuits are operated by the coincidence output CN of the comparator circuit. In this case, the target value setting section 13 has the following configuration to send out the final value to which the envelope signal VL should reach for each state as the target 1-data signal TG.

The attack level signal generation circuit 35 is an attack level memory composed of ROIVI that stores attack level data determined for each tone, and the tone selection signal T
The attack level data specified by C is outputted and applied as an attack level signal TL to a selector A via a subtraction circuit 36 and an addition circuit 37. The sustain level signal generating circuit 39 is a sustain level memory composed of 10M that stores sustain level data determined for each tone color, and reads out the sustain level data designated by the tone selection signal TC to generate a sustain level signal SL. Give it to the selector as.

Selector A is the state signal S on the state control 1 circuit side.
In response to T, the sustaining level signal SL is selected when the decay state is (decay-sustaining stay) 81, and the attack level No. 4IIi TL is selected when the attack state is SO, and the selected output signal is given to the comparator circuit 33 as the target value signal TG. .

Thus, in state SO the envelope signal VL
When the content of the target value signal TG (attack level signal TL) matches, the comparator circuit sends out the Okara coincidence signal CN, which is detected by one circuit in a state system and outputs a state signal. Switch ST from attack state SO to decay-persistence state SIK. In addition, when the envelope signal VL matches the contents of the target value signal TG (sustaining level SL) in this decay-sustaining state S1, the comparator circuit sends Okara coincidence No. 48 CN, and this is transmitted to the state control circuit. (2) detects it and sets the gate control signal SUS to logic “1” to maintain it) S12
Switch to

The gate circuit 4 is supplied with the calculation timing pulse signal CL generated in the calculation timing adding section 12 through the AND gate 31. The calculation timing setting section 12 has a rate memory 41 that determines the calculation speed in accordance with the tone color. The rate memory 41 is a ROM that stores data representing the calculation speed of each state portion constituting the envelope signal VL for each tone. Composed, sound't! ! ,
Tone selection signal T given from selection circuit 6 (Figure i2)
C and the state signal 8 given from the state control circuit
The rate data signal TR corresponding to the tone color and state currently specified by T is read out.

This rate data signal TR is given to the T:JIin timing control circuit 44, and this calculation timing control circuit 4
Numeral 4 generates a pulse signal having a period corresponding to the rate data signal TR, and supplies this to the AND gate 31K as a pulse signal CL.

The envelope signal VL thus formed by the arithmetic operation of the arithmetic circuit 5 in the envelope signal forming section 11 is sent to the envelope signal VL'' via the adder circuit 45.
Sent as .

In addition to the above configuration, the initial touch control circuit M14 of the touch response control circuit 8 has an initial touch coefficient memory 51. This initial touch coefficient memory 5
1 consists of a ROM that stores an initial touch coefficient representing the sensitivity of initial touch control for each timbre, reads out the initial touch coefficient corresponding to the timbre specified by the timbre selection signal TC, and sends it to the initial touch coefficient signal ■ It is given to the multiplication circuit 52 as TK. Multiplication circuit 5
2 is given an initial touch data signal ITD obtained in response to one initial touch operation of a key in a touch detection section 9 (FIG. 2), and an initial touch coefficient signal I
The multiplication output with TK is applied as an initial touch control signal ITC to an adder circuit 37 inserted into the signal line of the attack level signal TL via a gate circuit #. The gate circuit is given an initial touch enable signal ITE obtained by operating the switch SW (FIG. 2) that selects the 1st touch control;
In this way, when the performer wishes to add an initial touch effect to a musical tone as necessary (when turning on the switch 2/SW), the initial touch control signal ITC can be sent out.

Here, as the initial touch coefficient data stored in the first touch coefficient memory 51, for example, the seventh
As shown in the figure, the initial touch data signal ITDj for each tone of piano, guitar, flute, and string
4 [times] (12 [dB]) compared to C.

2 [times] (6 [dB)), 2 [times] (6 [dB)].

The coefficient value is selected such that the initial touch control signal ITC with a level of 0 [times] can be sent. Therefore, when the tone color selection signal TC specifies, for example, a piano tone, the level of the initial touch control signal ITC will be a value that is 12 (dB) higher than the level of the initial touch data signal ITD, and this will cause the initial touch Maximize control.

Furthermore, when the tone selection signal TC specifies the tone of guitar or flute, the level of the initial touch control signal I'l'C is set to 6 times the level of the initial touch data signal ITD.
If the value is increased by [dB], a medium-strength initial touch control can be performed. On the other hand, when the tone selection signal TC specifies the tone of the string, the initial touch control signal ITC becomes the θ level).
Initial touch control is not performed.

Incidentally, for natural instruments, the relationship between the range of change in the volume of a musical tone and the strength of the playing when playing is that the range of change in volume (i.e. dynamic range) is wide for pianos, not so wide for guitars and flutes, and extremely wide for strings. narrow. In order to approximate this, in this embodiment, the dynamic range of the initial touch data signal ITD is fixed for each tone, and the initial touch coefficient data for the piano tone, which requires the widest range of change in volume, is maximized. In addition, set the initial touch coefficient data to a medium value for guitar and flute tones that require a medium range of change, and set the initial touch coefficient data for string tones that do not require much range of change. Set it to “0”.

The after-control circuit 15 of the touch response control circuit 8 includes an after-touch control circuit and a width modulation control circuit +J5. The acta touch control circuit 54 is configured in the same manner as the initial touch control circuit 14 described above, and includes an aftertouch coefficient memory 5 made up of a ROM that stores aftertouch coefficients representing the sensitivity of aftertouch ful1m for each tone.
6, which is specified by the timbre selection signal TC*
The aftertouch coefficient corresponding to 15 is read out and applied as an aftertouch coefficient signal ATK to a multiplication circuit 571C. The multiplier circuit 57 is given an aftertouch data input signal ATD obtained in response to, for example, an aftertouch operation of a key in the touch detection wS9, and the multiplication output with the aftertouch coefficient signal ATK is sent to the aftertouch control signal via a gate circuit. After control #I is applied to the adder circuit 59 as ATC, and is further supplied to the adder circuit 45 inserted into the signal line of the envelope signal VL via the adder circuit 59.
It is given as a signal A S (=ATC + AMC).

The gate circuit is provided with an aftertouch enable (W ATE) obtained by operating the switch A-8W (Fig. 2) that selects aftertouch control, so that the performer can apply the aftertouch effect to the sound as needed. When attempting to turn on the switch (when switch A-8W is turned on), an aftertouch control signal ATC can be sent.

Here, as for the aftertouch coefficient data stored in the aftertouch coefficient memory 56, for example, as shown in FIG.
, 0 [times], 4 [times] (121 mdB) ), 4 times (12 [:dB) ) level aftertouch control g11
The coefficient values are excursed such that the signal ATC can be sent out. Therefore, when the timbre selection signal TC specifies the timbre of flute and string, the level of the aftertouch control signal ATC is higher than the level of the aftertouch data signal ATD by 12[:
dB), this increases the adder circuit 4.
The level of the envelope signal VL' outputted from 5 can be changed over a wide range according to the fluctuation of the aftertouch data signal ATD, and the aftertouch opening 1 of the musical tone volume is adjusted.
can be made as strong as possible. Also, the tone selection signal TC
specifies a piano or guitar tone, the aftertouch control signal A'l'C becomes υ level 17°.At this time, the level of the envelope signal VL' hardly changes even if the aftertouch data signal ATD changes, and in practice A state is obtained in which no aftertouch effect occurs.

By the way, for natural instruments, the change in the volume of musical tones depending on the playing strength during sound production is 1 circle (dynamic range).
is maximally wide for flutes and strings, whereas it is extremely narrow for pianos and guitars. In order to approximate this, in this embodiment, the dynamic range of the aftertouch data signal ATD is fixed for each tone, and the aftertouch coefficient data for the flute and string tones that require the widest range of change in volume is used. Aftertouch coefficient data is set to "o" for piano and guitar tones that are maximized and require almost no change range.

The amplitude modulation control circuit 55 also counts the clock pulses of the clock oscillator 62 with a counter 63, distorts the count output into a triangular shape, for example, in a waveform shaping circuit b4, and obtains a modulation signal AC. In the multiplication circuit 65, the gate circuit 66
A multiplication output with the amplitude compression coefficient signal A M K given from the amplitude compression coefficient memory 67 is obtained through the gate circuit section and sent as an amplitude modulation control (Q number AMC). This amplitude modulation control signal AMC is transmitted to the adder circuit. 59 to the adder circuit 45 and added to the envelope signal VL.

The gate circuit part has an amplitude modulation signal which becomes logic "1" as a control #I signal when an amplitude modulation effect selection switch separately provided on the operation panel is operated or when a tone such as a vibraphone is selected in the tone selection circuit 6. enable signal Af
VIE is applied and the amplitude modulation control signal AMC can be transmitted in the corresponding mode. In addition, an aftertouch enable signal ATE is given as a control signal to the gate circuits b, thus allowing the aftertouch control &l
When the amplitude compression coefficient signal AMK is not applied to the multiplier circuit 65, the modulation signal AC obtained in the waveform shaping circuit 64 is directly sent through the gate circuit section as the amplitude modulation control signal AMC. The adder circuit 45 sends out an envelope signal VL' whose level changes with a depth determined by the amplitude value. On the other hand, when aftertouch control is selected, the multiplication circuit 6
5 compresses the amplitude of the modulation signal AC to a value corresponding to the compression coefficient signal AMKO value and sends it out as an amplitude control signal A IVI C;
As a result, the after-touch control signal A 'I'' of the signal component No. As is obtained from the adder circuit 59.
The ratio of the amplitude of the amplitude compression coefficient signal AMC to C is made smaller to make the aftertouch control shadow 4# given to the envelope signal VL' relatively thicker, thereby emphasizing the aftertouch effect on the musical tone.

The touch offset control circuit 16 of the touch response control circuit 8 attenuates the attack level signal TL (reduces the value of TL) when initial touch, touch control me, or (and) aftertouch control is selected. Something,
It has a touch offset memory 70 having a ROM configuration that stores touch offset data representing the amount of attenuation for each timbre. The offset data for initial touch and aftertouch are respectively read out by the timbre selection signal TC and sent to the addition (b) path 73 via gate circuits 71 and 72 controlled by the initial touch enable signal ITE and the aftertouch enable signal ATE, respectively. The touch offset control expansion 1 signal TOF, which is the addition output, is applied as a subtraction input to a subtraction circuit inserted into the signal line of the attack level signal TL.

Here, the initial touch offset data stored in the touch offset memory 70 is, for example, as shown in FIG. J [dll), -C times) (-6CaB))
, H (times) (-6 [dB)), and 0 [times] attenuation. Thus, when the initial touch control is selected, the attack level signal TL is set to 12 (dll) with respect to the initial touch data signal ITD by the initial touch control signal ITC from the initial touch control circuit 14 in the adder circuit 37.

6 (dB), 6 [:dll, 0 (dB)
When the touch offset control signal TOF increases in the subtraction circuit 36, the attack level signal T
L is lowered by an amount corresponding to the increase, so that the level of the attack level signal TL during the initial touch control is maintained at approximately the same level as the reference level when the initial touch control is not selected.

Similarly, the aftertouch offset data stored in the touch offset memory 10 is output from the attack level signal generation circuit for each tone, that is, piano, guitar, flute, and string, as shown in FIG. 0 for attack level signal TLK.
[@), o [times], 1 [times] (-12 [dll)
, 'C times E C-12 (dB) )4. Thus, when the aftertouch control is selected, the level of the envelope signal VL' is changed to 0 [times] or 0 [times] by the aftertouch control signal ATC from the control circuit 15 in the adder circuit 45.
times], 12 (dB), and 12[:dB:], the subtraction circuit I uses the touch offset control signal TOF to lower the level of the envelope signal VL by the amount of increase, and thus when selecting aftertouch control. The average level of the envelope signal VL' is maintained at the same level as when aftertouch control is not selected.

Here, the reason why the volume fluctuation that occurs when aftertouch control is selected is suppressed by attenuating the attack level LA of the attack waveform section W1 by touch offset is as follows. Firstly, in the case of a musical tone that normally requires aftertouch control, the envelope waveform has a slow rise in its attack waveform portion W1, and the aftertouch split body 1 is not actually controlled. At the time of execution, the attack waveform iW1 is still rising. Therefore, it is actually effective to perform touch offset on this attack waveform portion W1. Second, in the envelope waveform, the highest level (in other words, the highest volume) is the attack level LA. Therefore, it is actually effective to perform touch offset with respect to this attack level LAK.

In the above configuration, the state mediation circuit 1 (capital) is the 8th
The envelope signal VL shown in FIG. 6 (CB) or (C) is formed by calculating and controlling the oil counting circuit station according to the processing procedure of the flowchart shown in the figure. That is, the state control decircuit 30 enters the standby state S3 in step SPI of FIG. is prevented from passing through the AND gate 31 to prevent addition and subtraction operations in the arithmetic circuit 5.At this time, the envelope signal VL maintains all "0" levels.State open side 1
The circuit 30 then proceeds to step SP3 and checks whether the new key-on signal KON has become logic "1" or not by +1J.
141i, and if the result is negative, the process returns to step SPI, and the state control circuit enters a state in which it waits for a new key-on signal KON to be generated.

Eventually, in step SP3, when it is determined that the new key-on signal KON has become logic "1", the state control circuit I moves to the next step SP4, sets the gate control 1 signal SUS to logic "0", and then starts the next step. In step SP5, the resetting amount R8 for the arithmetic circuit 5 is set to logic "1" and the envelope No. 116 vLvtj
Set to i calculation start level (all "0" level).

In the next step SP6, the state control circuit I switches the state signal ST to the attack state (SO), and also changes the calculation designation signal UIJ to the arithmetic circuit 6 to the logic I
ll to specify addition operation.

At this time, the change value data generation circuit A sends out the change value data signal VD having the change value described above with reference to FIG. In this way, the envelope signal VL rises exponentially from the all rOJ level to form an attack waveform portion WIY. -10,000 state (Since the W ST has become the attack state SO, the selector of the target value setting section 13 selects the attack level signal TL and supplies it to the comparator circuit as the target value signal TG. ) Compare with No. N VL.

Next, the state control circuit side moves to step BP7 and judges whether the key-on signal KUN is "1" or not. 1 signal 1'G (that is, attack level signal 'f'L), it is determined whether it is equal to or higher than that. If a negative result is obtained at this time, the calculation of the remaining attack state SO has not been completed, so the process returns to step sP6 and steps SP7 and S are performed again.
P8's judgment is hilarious. Here, the judgment in step sPY is executed to confirm that the key has not been released during the process, and if a negative result is obtained, the process jumps to step SPI3, which will be described later, and the freeze calculation circuit 5 is put into the release state 82. By controlling this, the envelope signal VL is immediately extinguished.

On the other hand, when an affirmative result is obtained in step SP8 that the envelope signal VL has become the target value signal TG (that is, the attack level signal TL) K, the state control circuit (material) moves to step SP9, as shown in FIG. At time t□1, the state switch signal ST is switched to the decay-continuation state S1, and the operation designation signal UD is set to logic "0" to designate a subtraction operation. Therefore, the arithmetic circuit 6 receives the change value "1" coming from the change value data generation circuit side.
By subtracting the change value data signal VD from the envelope signal VL, the Sidike 1 waveform portion W2' is formed. At this time, the selector A supplies the sustaining level signal SL to the comparison circuit 33 as the target value signal TG in response to the state signal ST.

Next, the state control circuit side moves to the next step 5PIO and determines whether the key-on signal KON is logic "L" (therefore, whether the key was released midway or not), and if a positive result is obtained, the next step is performed. S pH, the envelope signal VL becomes the target value signal TG (i.e., the sustained level signal SL)
Determine whether it is equal to or less than. If a negative result is obtained, the state control circuit returns to step SP9 again and repeats the determinations in steps 5PIO and 5PII.

If a negative result is obtained in step 5pio, the key has been released, so proceed to step 5P15K, which will be described later.
The signal jumps and the envelope signal VL"riN is immediately extinguished.

On the other hand, if a positive result is obtained in step 5PII, in the next step 5P12, the state control circuit determines whether the envelope waveform mode specified by the timbre selection signal TC is a sustained tone or an attenuated tone. If the continuous tone envelope is specified, proceed to the next step SP] 3 and send the gate control signal S.
The envelope signal VL is prevented from changing by setting US to logic "1" and blocking the passage of the change value data signal VD in the gate circuit section, thus forming a continuous waveform @S'W3 at time t in FIG. let

At this time, in the next step 5P14, the state control circuit I determines whether the key-on signal KON is logic "1" or not, and if it is affirmative, the process returns to step 5P14 and waits for the key to be released.

Eventually step 5P14? If a negative result is obtained, the state control circuit 30 moves to the next step 7'5P15 and switches the state a ST to the release state 82, thereby generating the change value [°1] from the change value data generation circuit.
The change value data signal VD of `` is sent out, and the calculation designation signal Ul) is set to 10''. Then, proceeding to the next step 5P16, set the gate control signal SUS to "0" and give the arithmetic timing valve switch No. 6 CL to the gate circuit 4. Then, the envelope signal VL is changed to a value by the arithmetic circuit B. The quality of the maple is reduced by 11", and thus, at time t13 in FIG. 6, the release waveform portion W4 starts to be formed.

Next, the state control circuit (9) moves to step 5P17 and determines whether the envelope signal VL has become all "0" based on the detection signal HE of the release end detection circuit. Here, the release end detection circuit is a 9-person circuit, and the parallel 9-bit envelope signal VL
When this signal becomes all "0", a release end detection signal HE which becomes logic rlJ is sent out. If a negative result is obtained in step S PI3, return to step S PI3 again and perform steps 5P15 and 5P16.
, 5P17 (7) Process) Execute k times and wait until the envelope signal VL drops to all "0" level.

Eventually, an affirmative result is obtained in step S PI3, and the state control circuit determines that the envelope signal VL has been released and the envelope waveform generation operation has ended, and at time t14 in FIG.
Return to PI standby state.

In this way, an envelope signal VL having a continuous tone envelope waveform as shown in FIG.

On the other hand, if the determination result of the envelope waveform mode in step 5P12 is 1sL, n tone shape, the state control circuit blade jumps steps SPI3 and SPI3 and moves to step 5P15, whereby step S
To immediately enter the release stay 82 without forming the continuous waveform portion W3 in PI3 and 5P14, and as a result, obtain an envelope signal VL having an attenuated tone shape as shown in FIG. 6(C) from the arithmetic circuit 6. I can do it.

As described above, according to the configuration shown in FIG.
The attack waveform part W1 rises up to the level LS (SL), and then the decay waveform part W2 falls from the attack level LA (TL) to the sustain level LS (SL).
) continues, and then the sustaining level LS continues.
Release waveform part W from (SL) to all “0” level
4 falls, as shown in FIG. 6 (6), or as shown in FIG. It is possible to obtain an envelope signal VL (VL') having a damped tone shape.

When forming the envelope signal VL (VL') in this way, if the performer does not select initial touch control, aftertouch control, or amplitude modulation mode, and does not select vibraphone as the tone, touch The response control circuit 8 generates an initial touch system (11tl signal ITC, aftertouch control signal ATC, and touch offset control signal TOF). Therefore, the attack level LA of the attack waveform portion W1 is read from the attack level signal generation circuit A. It is based on the attack level signal TLvc, and at this time, no touch response effect occurs on the musical tone.

In this state, when the tone selection circuit 6 selects, for example, a piano tone, and selects the initial touch opening 1 by turning on the switch SW', the initial touch enable signal ITE becomes logic "1". . 1 digital touch data signal ITD is generated when a key is pressed in this state.

The value is adjusted to the maximum sensitivity by the initial touch coefficient signal I'l''K in the initial touch control circuit 140 and the multiplier circuit 52, and the initial touch control circuit 140 is adjusted to the maximum sensitivity by the initial touch coefficient signal I'l''C.
The signal is applied to the adder circuit 37 as a signal. At the same time, the touch offset control circuit 16 generates a touch offset control signal TOF based on the initial touch touch offset data (having a large value corresponding to the maximum sensitivity) read from the touch offset memory 70 via the gate 71. By applying the touch offset control signal TOF to the subtraction circuit A, the attack level signal TL is reduced to a level as low as the touch offset control signal TOF.

In this way, the level of the attack level signal TL tends to rise by an amount corresponding to its average level by the initial touch control signal ITC given from the initial touch control circuit 14, but the level of the attack level signal TL tends to rise by an amount corresponding to the average level, but the level of the attack level signal TL tends to rise by an amount corresponding to the average level. Level signal T
L is attenuated, and therefore the reference level of the attack level signal TL is suppressed to approximately the value when initial touch control is not selected. Furthermore, since the maximum sensitivity aMil adjustment for the initial touch data signal ITD is performed by the initial touch coefficient signal ITK, the initial touch control (f[iI signal ITC Fluctuation #A, that is, the dynamic range becomes slightly wider.This causes the value of the attack level signal TL and therefore the envelope signal V.
The attack level LA of the attack waveform portion W1 of L' is such that it can practically express even subtle differences in the initial touch operation of the key.

In this way, an initial touch effect similar to that of a piano with a wide dynamic range can be applied to the musical tone without significantly increasing the volume of the musical tone compared to when initial touch control is not selected.

Next, when the timbre selection circuit 6 selects, for example, an IJ song timbre and turns on the switch A-8WY to select aftertouch control, the aftertouch enable signal ATE becomes logic "1". Aftertouch data signal ATD, which is often generated by operating a key in this state.
The O value is adjusted to the maximum sensitivity by the aftertouch coefficient signal ATK in the multiplication circuit 57 of the aftertouch control circuit M, and is applied to the addition circuit 45 via the addition circuit 59 as the aftertouch control signal As. At the same time, the touch offset control signal TOF based on the aftertouch touch offset data (having a large value corresponding to the maximum sensitivity) outputted from the touch offset memory '70 in the touch offset control circuit 16 is sent via the gate 72. The attack level signal T
L is reduced to a lower level by the touch offset control number TOF.

In this way, the level of the envelope signal VL increases by adding the after control signal As in the adder circuit 45, but the attack level LA of the attack waveform portion W1 of the envelope signal VL is added to the after control signal As in the touch offset control circuit 16. It is reduced by an amount corresponding to the average level of the control signal ATC, and therefore, in this case as well, the level of attack ray 31m TL is suppressed to approximately the value when aftertouch control is not selected. Therefore, by suppressing the maximum volume of the yarn amount, it is possible to substantially suppress variations in volume due to selection of aftertouch control. On the other hand, in this case, the aftertouch data signal ATD
Maximum sensitivity adjustment for aftertouch coefficient signal AT
By using KK, the fluctuation range, that is, the dynamic range, of the aftertouch control signal ATC with respect to the strength of the aftertouch operation of the key becomes wider. Therefore, the attack waveform portion W1 of the envelope signal VL' can sufficiently express subtle differences in key aftertouch operations for practical purposes.

Next, if the tone selection circuit 6 selects, for example, a flute tone, and performs the first key altouch operation to a moderate degree and the key aftertouch operation to the maximum,
The initial touch control circuit 14 and the aftertouch control circuit 54 operate in the same manner as in the above case, and the initial touch Ill signal ITC and the aftertouch control circuit (i
l1 value ATC'a'+3! In the touch offset control circuit 16, the change in volume due to the touch offset control circuit 16 is subtracted from the touch offset control signal TOF & attack level signal TL obtained based on the initial touch and after touch touch offset data read from the touch offset memory 70. By doing so, it is possible to suppress the noise.

Next, when the timbre of the vibraphone is selected in the timbre selection circuit 6, or the amplitude modulation mode is specified by operating the tone effect selection switch, an amplitude modulation control signal AMC is sent from the amplitude modulation control circuit. Thereby, it is possible to obtain the effect of changing the volume of musical tones in accordance with changes in the modulation signal AC obtained from the waveform shaping circuit 64. If the aftertouch system # is designated at the same time, the influence of the amplitude modulation control signal AMC on changes in the volume of the musical tone is reduced by compressing the amplitude of the K tone signal AC by the amplitude activation coefficient signal AMKIC. At this time, the aftertouch control circuit 8 outputs the aftertouch data signal ATD in the same way as in the above case.
The aftertouch control signal ATC is sent out based on this, thus giving an aftertouch effect to the envelope signal VL'.

In this way, when amplitude modulation mode and aftertouch control-1 are specified at the same time, the amplitude modulation effect is suppressed and the aftertouch effect is forced, allowing the performer to adjust the musical tone being sounded as necessary. It can be controlled with a large degree of freedom.

Note that in the above description, the touch offset control circuit 16
The configuration is such that the initial touch and aftertouch offset signals ITO and ATO obtained in the above are subtracted from the attack level signal TL, but instead of this, the initial touch and aftertouch offset signals ITO and ATO are Both or one of them may be subtracted from the envelope signal VL (VL'') to reduce the level of the entire envelope waveform.

Furthermore, in the above description, the touch offset control circuit 16
A subtraction circuit 36 is used to reduce the level of the attack level signal TL by the touch offset control signal TOFK.
However, for mourning, a subtraction means that subtracts the attack level signal TL by the touch offset control signal TOFK may be used.

Furthermore, in the above description, the initial touch data signal ITD and the aftertouch data signal AT in the initial touch control circuit 14 and the aftertouch control circuit
The touch offset control signal TOF' having the same magnification as that given to D is generated in the touch offset control value 1 circuit 16, but the magnification does not necessarily have to be the same; in short, each It may be determined individually by taking into consideration the size of the dynamic range of the touch response control in timbre and the fluctuation in volume that occurs in the musical tone as a result of the touch control.

Furthermore, in the above description, the fluctuation in volume based on aftertouch control is corrected by attenuating it using the attack level signal TL, ``&touch offset control signal TOF. The sustained level signal SL of the level signal generation circuit 39 may be attenuated by the touch offset system # signal TOF.

Furthermore, in the above description, the volume of the musical tone is controlled by controlling the envelope signal VL' based on the initial touch or the aftertouch, but instead of this, a volume control circuit is provided on the output side of the musical tone signal generation circuit 3. and a volume attenuation circuit, and this volume control circuit is connected to the initial touch control signal ITC or the aftertouch control signal A'l.
In addition to controlling the touch offset control signal TOFK, the volume attenuation circuit may also be controlled by the touch offset control signal TOFK.

Furthermore, in the above description, the selection of initial touch control and aftertouch control is performed using the switch SW and A-8.
In the above embodiment, the initial touch control or the aftertouch control may be automatically selected and designated in response to the tone color selection in the tone color selection circuit 6.

That is, when the tone selection circuit 6 selects, for example, a piano tone, the initial touch enable signal lT is activated to select the initial touch control in response to this selection.
l - logic "1" is automatically set, and aftertouch enable signal ATE is set to logic "1" in order to select aftertouch control correspondingly when a string tone is selected.
1" will be automatically installed. For this purpose, an initial touch enable signal ITE, an aftertouch enable signal ATE, and an amplitude modulation enable signal AM are required based on the tone color selection signal TC output from the tone color selection circuit 6.
This is to form E.

As described above, according to the present invention, when the touch response control (initial touch control or aftertouch control a) of the musical tone volume is selected, the average level of the musical tone volume is automatically reduced accordingly. This makes it possible to easily suppress variations in musical tone volume between when touch control is selected and when touch control is not selected.

Further, according to the present invention, when the musical sound is controlled to change the shooting width and the touch response control force is selected at the same time, the shooting width modulation degree is automatically adjusted to 1". The yoshitatsu response effect can be emphasized, and the degree of freedom in controlling musical tones by key touches can thus be further expanded.

[Brief explanation of the drawing]

Figure 1 is a signal waveform diagram showing the envelope waveform to be generated, Figure 2 is a block diagram showing the general configuration of the electronic musical instrument, and Figure 3 is a block diagram showing the general configuration of the electronic musical instrument.
The figure is a block diagram showing one embodiment of the touch response control circuit for the accompaniment instrument according to the present invention.
The figure is a signal waveform diagram showing the operation of the attack waveform part.
Fig. 6 provides an explanation of the generated envelope signal (g waveform diagram, Fig. 7 is a chart showing an example of the contents of offset data and touch coefficient data, and Fig. 8 shows the operation of Fig. 3). It is a flowchart for explanation. 1... Musical tone signal generation section, 2... Envelope signal generation circuit, 3... Musical tone signal generation circuit, 4... Keyboard, 5
...Key press detection circuit 6...Tone selection circuit 7...
Sound system, 8...Touch response control circuit, 9...Touch detection section, 11...Envelope signal forming section, 12.°...Calculation timing footing section, 13...
Target value setting section, 14...ininal touch control circuit,
15... Aftertouch control circuit, 16... Touch offset 匍 1 (1111 circuit, 51... Initial touch coefficient memory, Nu... Aftertouch control circuit, Secret... Aftertouch coefficient memory, 5b...・Amplitude modulation control circuit,
67... Shooting compression coefficient memo IJ, 7u... Touch offset memory, 1.SW... Initial touch control 1 selection switch, AφSw... Aftertouch control selection switch. Applicant's agent 1) Megumi Hebe No. 1 (Fig. 4, Fig. 5, $ 6, Fig. 7, Fig. 6)

Claims (1)

[Scope of Claims] 1. (a) a keyboard; (b) musical sound generating means for generating a musical tone corresponding to a key pressed on the keyboard; and (e) detecting the touch of a key pressed on the keyboard. (d) selection means for selecting and specifying a touch response control function; and (e) touch detection means for selecting and specifying a touch response control function based on the touch information when the touch response control function is selected and specified in the selection means. (f) a volume control 1+ level for controlling the volume of the musical tone generated from the musical tone generating means; and (f) a musical tone generated from the musical tone generating means when the touch response control function is selected and specified in the selecting means. What is claimed is: 1. An electronic musical instrument comprising: volume attenuation means for reducing the emission of sound and electricity to a predetermined level. 2. The electronic musical instrument according to claim 1, wherein the volume attenuation means determines the amount of volume attenuation in accordance with the timbre of the musical tone generated by the musical tone generation means. 3. The musical sound generating means replaces the means for generating an envelope waveform that sets the amplitude envelope of the musical sound, and the volume control means and the volume attenuation means control the level of the envelope waveform. The electronic musical instrument according to item 1 or 2. 4. The electronic system according to claim 3, wherein the volume control means and the volume attenuation means control the peak level of the envelope waveform. 5. (a) a keyboard; (b) a musical tone generating means that generates a high-pitched tone corresponding to a key pressed on the keyboard; and (C) detecting the touch of a key pressed on the keyboard and transmitting touch information. (d) a selection means for selecting and specifying a touch response control function; (e) a touch response control Th+ in the selection means;
(f) a volume control means for controlling the volume of the musical tone generated by the musical tone generating means based on the touch information when a function is selected and specified; (f) periodically controlling the volume of the musical tone generated from the musical tone generating means; (g) an amplitude modulation means for modulating and imparting a Kayayo modulation effect; (g) a touch response flil in the selection means;
1. An electronic musical instrument characterized by comprising: modulation depth control means (114) for suppressing the depth of string width modulation of musical tones by the amplitude modulation means when Noh is selected and specified.