JPS6049395A - 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 (1) Technical Field of the Invention The present invention relates to a device for generating a portamento effect or a chromatic grissando effect, in which the period of the slide clock from the starting blunt to the destination is not constant, but is related to the chromatic interval. The present invention relates to an electronic musical instrument that is configured to change the electronic musical instrument.

(2) Prior art and problems Conventionally, the present applicant has proposed in Japanese Unexamined Patent Publication No. 55-152526 ``Electronic Musical Instruments'' that the fundamental frequency of musical tones generated by pressing a key was read out from the key data of each weight. Electronic musical instrument proportional to frequency number (U.S. Patent No. 4.085,64)
No. 4 and No. 4.067.254), we have proposed a device that adds natural-looking glide effects, portamento effects, etc. with a simple configuration.

FIG. 1 is a diagram showing the parts necessary for explaining the present invention taken from FIG.
I made it myself, so I kept the name and number the same. Figure 4z i
The portion surrounded by the fish-chain line corresponds to the portamento semi-circular grippondo effect generator 100 in FIG. 2 of the embodiment and FIG. 6 of the embodiment of the present invention, which will be described later.

In the figure, when the key data of the first pressed key is generated from key code register 1 to t1 to 121,
Based on No. 18 of the envelope generation circuit, a latch pulse is generated from the key data latch pulse generation circuit 22 to both 122 and 125, and this key data is stored in the follow-up key data calculation register 26 and the target key data register 25. be done. When the second key is pressed and the key data of the next key is generated on key code registers 1 to 11 to t21, a latch pulse is generated on 123, and the second key data is stored in the target key data register 25 and the target This becomes key data B.

The key data of the first key pressed is follow-up key data A
It is stored in the follow-up key data calculation register 26 as 7'
(The following key data A and target key data B are compared by the comparator 24.

In the first suppression, a signal is generated on 124 of A=H, and N
The counter 29 is reset via the OT gate 55, and the AND gate 31 is turned off.

When the condition A=H is not satisfied in the second suppression, 124
The upper signal disappears and the counter 29 is in the reset state and the M mountain gate 31 is OFF? ;Cancel the status.

If A>B, follow-up key data A is larger, so the selector 26 sends the output on 127 of the counter 29 that counts the output of the clock generator 30 to 132, and calculates one by one from the contents of the follow-up key data calculation register 26. Subtract. A
(If B, target key data B is larger, so 7
33, the contents of the follow-up key data calculation register 26 are added by one. In this way, the follow-up key data A approaches the target key data B, and when they exactly match, A=B is established again, a signal is generated on the counter 124, the counter 29 is incremented, and the AND gate 61 is also turned off. AND gate 61 is O if A>B or A (in the interval of B, that is, in the frequency slide interval), and the switch is turned to the PORT side.
N and the output on 128 of the clock generator 60 is t1.
3. Can be sent on top. 0-GLISS, If the switch is turned down in ■, it will be unconditionally OFF.

The output on 127 of counter 29 corresponds to the time for incrementing half-tone intervals, and the output on 128 of clock generator 60 corresponds to the time for finer increments between half-tone intervals. The tracking key data A, which is calculated by ±1 at the output timing of the counter 29, becomes the address signal of the note frequency number memory 5 via 15 to 110.The frequency number corresponding to the tracking key data A changes at intervals of 9 semitones. 111
The note frequency number is sent out on the top. In the end, the note frequency number changes at semitone intervals in accordance with the output of the counter 29 until the follow-up key data A becomes equal to the target key data B, thereby realizing a chromatic scale grip effect movement.

0-GLISS, if the switch is knocked down on the side, 1
Since no signal is generated on 16, data selector 6 is OFF.
If fi is F, the #calculated note frequency number Q' on 114 is 0, and the cumulative note frequency number Q' on 115, which is the output of the accumulator 7, is also 0. The arithmetic note frequency number R' on the output 717 is equal to R.

Eventually, the frequency signal is converted into a frequency signal proportional to the calculated note frequency number R' by the frequency generator 12 based on 几', which drives the musical waveform generator 13 and is emitted by the sound system 14 to realize a chromatic grissando effect. can.

On the other hand, if the switch is knocked down in Fatalo T, then AN
The D gate 31 is turned ON and the output of the clock pulse generator 60 on 128 is sent out on 113 during the period of A>B or A (B. That is, the data selector 6 is turned on every time a clock pulse is generated on 128. Then, the division note frequency number Q'-R1n obtained by dividing it by N is J14
Send upward. Accumulator 7 accumulates Q' occurring on 114. After accumulating a certain number of tails p, the output on 127 of the counter 29 becomes the selector 2 at the next clock pulse.
±1 in the follow-up key data calculation register 23.
At the same time, the contents of W and the calculator 7 are cleared through the NANI) gate 66, and the NOT gate 65
The AND gate 61 is temporarily turned OFF through the gate to prevent 4 from being sent from the data selector 6 to the accumulation a7.

The complementer 8 is filled with the signal on 125, and if A>B, q' on 115 is set to -q, otherwise +Q
116 and input to the adder 9. In other words, it is assumed that the larger the key data is, the higher the pitch range (the higher the note frequency) is. Therefore,
If follow-up key data A is slightly larger than target key data B,
The note frequency number R, which is proportional to the note frequency, is also larger in the tracking key data A, so the note frequency y / (
It is necessary to subtract R (75), and it is necessary to convert Q'' to -Q''.Of course, if A is B, then Ql+ can be +Q''.

As an example, note frequency Nannoku 1+ RQ+ Ra
(R1<fL2<R3) are each at semitone intervals, and if the follow-up key data A corresponds to R and the target key data B corresponds to 3, then the calculation is performed every time a clock pulse occurs on 116. Note frequency number π is from turtle to 几1 + R
1/'N→几1+2(几〆N)→R1+s(RL/
N)・・・・・・→R1+p (R1/N),
p + 1st Clockz (counter 29 to 12 with Luz)
An output is generated on 7, the follow-up key data A is updated, and the contents of 7I unit 7 are output via NAND gate 66 (
Here, p(几s/N>) is calculated.

Clock Tsurus after p + 2nd, 几2→几2
10ru 27H-+n2+2 (RJN)・・・・・・→&+
It changes as p(几2/N)→R3, and A=B is established, and the frequency sliding force stops. That is, compared to the case of the chromatic glissando effect in which the calculated note frequency number R' changes at semitone intervals such as turtle → 几2 → R3, each 几1. It is possible to obtain a calculation note frequency nano (It') that smoothly changes between the motion and the peaks, and it is possible to realize the portamento effect.

Both effects that are problematic in the present invention are the portamento effect, in which the wave number of musical tones continuously shifts from the pressed key to the next pressed key, and the portamento effect, in which the wave number of the musical tone continuously shifts from the pressed key to the next pressed key. In this proposal, the semitone 1v glitsand effect, in which the sound frequency shifts due to a discrete change in the semitone interval, is achieved by actually generating a slide clock output from one clock generator 60 at a slide speed proportional to the period of each slide clock. In other words, the voltament effect,
Follow-up key data A that is updated according to the output of the counter 29 where both chromatic gritsand effects are sent out on the 127
The time required to transition from one pressed key to the next pressed key will be the same for both effects.

FIG. 2 shows a conventional train which is a dark version of FIG. 1, and the problems with this will be explained. That is, d? A slide corresponding to the clock generator 60 of FIG.

A clock generator 101 is provided. The slide speeds of both effects are determined in proportion to the frequency of the slide clock on line 12B, which occurs more frequently, and frequency information for generating musical tone frequencies is transferred to a musical tone frequency generator (not shown).
Send to.

In this case, since the slide clock frequency is constant,
The time it takes to slide from the starting key to the destination key is proportional to the pitch interval, and the sliding time for each chromatic pitch interval from the starting key to the destination key is constant. the result,
The slide feel becomes unnaturally monotonous, giving it a mechanical feel with no musical taste.

(3) Purpose of the Invention The purpose of the present invention is to provide a device for generating a portamento effect or a chromatic grissando effect, in which the period of the slide clock from the starting key to the destination key is varied in relation to the chromatic pitch. Nariko is to provide musical instruments.

(4) Accomplishment of the Invention In order to achieve the above object, the Seiko musical instrument of the present invention has a portamento effect in which the musical tone frequency continuously shifts from one pressed key to the next pressed key, and a discrete transition at chromatic intervals. In an electronic musical instrument in which the chromatic glissando effect that transitions chromatically is slid by the frequency of the slide clock output from a slide clock generator, the period of the slide clock from the starting key to the destination key is changed every chromatic interval or It is characterized by comprising a means for changing at intervals of a plurality of chromatic intervals.

(5) Embodiment of the Invention FIG. 6 is a general explanatory diagram of the operation of the slide effect, and FIG. 4 is an explanatory diagram of the principle of the present invention.

FIG. 5 is a diagram showing upsliding from the I note to the F note in the conventional voltamento/chromatic scale y'/de effect using a constant period te as a slide clock.

The chromatic scale is visually continuous and is shown as eight steps without a single note. The chromatic scale from JI note to F note is calculated by subtracting the I note frequency 1n from the E note frequency 1■, dividing the subtraction result by the number of steps 8, and using the slide clock with period t6. The accumulation result is added to the frequency information of the I sound, and the addition result is used as the frequency information at each stage. However, there are cases where the division result cannot be expressed within the accuracy of the division means, so in order to move from time 67 to time 68, the division result is accumulated on the accumulation result at time 67, and the result is used as the frequency information of the I sound. When added, the actual E note will be shifted by α.

Therefore, at time point 68, the E sound frequency iW information is directly output to avoid the deviation. And then continue with E
The chromatic scale from the note to the note F is performed using the slide clock at the same period in the same procedure as from note I to note E, avoiding the deviation of α'. In this way, a slide from the I note to the F note is made by combining the chromatic scale vowels.

Assuming that the required time for this slide is to, the slide times for each chromatic scale from I to E and from E to F are equal, ta, and have a constant period t.

A chromatic scale is created in 8 slide clocks, so the slide duration is 1. In the figure, when there is a voltament effect, the frequency IH information at each point in time, indicated by ■ and ○, is sent to the musical tone frequency generator. Shifts the sound frequency. In the case of the chromatic gridsand effect, the frequency 1η information at only a certain point in time, as indicated by ■, is sent to the musical tone frequency generator, so that the frequency of the musical tones changing at intervals of 1υj on the chromatic scale is shifted for all lines.

Conventionally, the slide from the starting aperture to the destination key is performed using a slide clock with a constant cycle, so the sliding feeling is monotonous and mechanical, and the audible sensation + mouth sensation is be.

Is the 4th figure the voltamen of Kienri? - This is a row showing the upslide from Dt to F-g in the chromatic Grino Sand effect. In this diagram, the chromatic scale is shown as 8 stages, which are continuous to the auditory sense and pose no problem, but it is not limited to this.As for the J movement, as described in Figure 2, the slide is determined. The period of the slide clock is changed every chromatic interval. From the first note to the note E, the period of the slide clock is ta(j)(i;
The notes from E to F in the latter half are slid by the clock pulse of the period tc (j+1) of the slide clock. The slide time in from the note to the F note is the sum of the valley slide time taci) and ta(t+1) from the I note to the E note and from the E note to the F note, and each slide time taCO, ta(<+1 ) is 8 times the period ta (mountain t++(s+1)) of each slide clock, so the relational expression % Formula % (4) Also, in the same figure, when there is a voltament effect, 1■, 0
The frequency information at the trough point indicated by is sent to the musical tone frequency generator, and the frequency of the musical tone that causes no audible problem is determined. In the case of chromatic scale length, frequency information only at a certain point in time, indicated by ■, is sent to the musical tone frequency generator, and the tone generation frequency of the musical tone with a discrete change in the chromatic interval is shifted.

As described above, in the present invention, the slide from the starting key to the target key is performed at the slide clock cycle set for each chromatic interval, thereby making the sliding feel more natural.

Also, in the same figure, the slide clock period is set to chromatic scale 1...intermittent, but two or more chromatic intervals, that is, two or more keys, are considered as one group, and the slide clock period is set for each group. Good too.

FIG. 5 is a block diagram showing the configuration of an embodiment of the present invention.

Voltamento/Chromatic Grizzund Effect Generator 200
is equivalent to the voltamento/chromatic effect generator 100 of FIG. The voltamento/chromatic Gritsnanode effect generator 200 is driven by a slide clock from the slide clock generator 201, and transmits frequency information to a musical tone frequency generator ( (not shown).

As a result, the change in musical tone frequency corresponds to the period of the slide clock. However, in the present invention, if there are 61 keys of plural keys 02 to C7, 0 to 02 to 07 are
The key number (referred to as the key number being processed in the figure) of the current slide position among the multiple sliding hammer positions from the starting key to the target drill is numbered 1 to 60 (hereinafter referred to as the number). , sends the blunt number UL information to the frequency conversion data memory 202.

The frequency conversion data memory 202 stores conversion data for determining the period of the slide clock from the slide clock generator 201 according to each key number,
The conversion data corresponding to the even number being processed is read out and sent to the slide clock generator 201, and the slide clock with the period determined by the key number being processed from the slide clock generator 201 is converted to the portamento town chromatic scale. applied to the Gripund effect generator 200.

FIG. 6 is a detailed diagram of the slide clock generator 201 of FIG. 5.

Frequency conversion data corresponding to the key being processed that is sent from the frequency conversion data memory (corresponding to 202 in FIG. 5) is held in a latch 602 for each slide at chromatic intervals, and the conversion data is stored in the latch 602. .about. is applied to a program counter 601 that can arbitrarily divide the system clock. The program counter 601 divides the system clock based on the applied conversion data, and generates a slide clock with a period corresponding to the key being processed.

FIG. 7 is another detailed diagram of the slide clock generator 201 shown in FIG.

Frequency conversion data memory (corresponding to 202 in Fig. 5) Frequency conversion data corresponding to the key being processed that is sent is converted into an analog solder pressure amount by a digital-to-analog converter 402, Oppressive moaning type oscillator (V
OO) 4111 causes the voltage controlled oscillator 401 to oscillate a slide clock with a period corresponding to the key being processed.

(6) As described in detail, according to the present invention, in a device that generates a voltament effect or a chromatic gripundo effect, the period of the slide clock from the starting point to the destination point is adjusted every chromatic pitch interval or It is provided with means for changing at intervals of a plurality of chromatic intervals. As a result, the slide time of each chromatic interval from the output key to the target key changes, and it is possible to escape from the mechanical monotony and obtain musical tones with musical taste.

[Brief explanation of the drawing]

Figure 1 shows the portamento chromatic scale grid according to the proposed example? /
Fig. 2 is an explanatory diagram of the problems caused by the conventional example, which is a dark version of Fig. 1, Fig. 3 is a general explanatory diagram of the operation of the slide effect, and Fig. 4 is a diagram of the present invention. A diagram explaining the principle of operation. Figure 5 is a diagram explaining the configuration of an embodiment of the present invention. Figures 6 and 7 are n-side views of the main parts of the embodiment. 2oo in Figure P1 indicates the occurrence of voltament and fast scale grittend. 2o1 is a slide clock generator, and 2o2 is a frequency conversion data memory. Figure 3 Figure 5 Figure 6 Figure 1

Claims (1)

[Claims] The slide clock generator outputs the portamento effect, in which the musical tone frequency continuously shifts from one pressed key to the next pressed key, and the cow scale gripundo effect, in which the musical tone frequency shifts discretely at chromatic pitch intervals. An electronic musical instrument that is slid according to the frequency of a clock, characterized in that it includes means for changing the period of the slide clock from the starting point to the destination key every chromatic interval or every plural chromatic intervals. 1 child instrument.