JPS58174997A - 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 automatically performs sound recording and/or pressing 11! based on musical score data extracted from memory. Regarding electronic musical instruments that can perform J'B indication, #J'1FlL for each multiple key presses that delay the manual performance tempo on the footboard, and certain protection data only when the previous and current side footworks are similar. By controlling the escape tempo to follow the manual performance tempo, the escape tempo does not change even if there are a few mis-touches (pressing fJ4).

This type of electronic nutrition that has been widely used involves measuring the manual performance tempo of a numerical number of key presses on the keyboard, and manually performing the escape tempo based on the result of simply averaging the measured values. There are some that are controlled to follow the tempo.

However, according to such a tempo wholesaler' powered type,
'j If you accidentally press a key quickly (or press slowly) several times in a row on the I4 board, the escape tempo will suddenly become faster (or slower).
After that, even if manual performance can be performed at the normal tempo, the tempo of automatic performance or variable key press instruction does not suddenly return to the original, which is an inconvenience that hinders smooth performance practice.

The purpose of this technique was to adjust the escape tempo of the musical score data so that it would not respond to a mistouch of the level of ridge (b), but would respond to a number of near-constant ten-ho key presses based on Nagisa's will or skill. The aim is to provide a novel electronic nutrition that can be controlled.

The electronic device according to the invention includes an improved tempo control circuit that is based on a first register for storing tempo data and key press data from the keyboard and escape data from the memory. A 91M circuit that adjusts the manual performance tempo every time a key is pressed in succession, a second register that temporarily stores the measured tempo data from this defining circuit, and Ar1 measured tempo from this second register. By comparing the data and the currently measured tempo data from the Rinkaku circuit, each hani has a predetermined approximate feature (also referred to as coincidence).
ml+'M tempo data from the second register into the first register only when this is satisfied. Escape tempo from memory t*1
J141.

That is, according to the present invention, in order to approximate the tempo data for two exits, it is possible to calculate the escape tempo of the music data from the memory only when the presses at a constant tempo are repeated. Since it is controlled to follow the manual performance tempo, the read tempo will not fluctuate due to a few mistouches, and smooth performance practice will be possible.

This invention will be described in detail below with reference to an example shown in the attached figure (2).

FIG. 1 shows a device for playing a child musical instrument, which is equipped with an automatic music playing device and an automatic key press instruction device according to an embodiment of the present invention.

A recording medium 10a exclusively for magnetic tape is attached to the lower margin of the surface of the musical score 10, and musical score data corresponding to the contents of the musical score are stored on the recording medium 10a in the format shown in FIG. It has been a whale. In other words, the recording medium 10a includes a start mark, standard tempo data, rhythm-type data for rhythms such as waltz and rumba, and Opry in the order of reading from the left edge of the score 10. Gart data mark, obbligato data,
Six pieces of melody data mark, melody data, Kanhata data mark, and accompaniment data are recorded.

When the music score 10 is inserted into the reception opening of the genealogy data reader fIIt12, the reader N12 sequentially reads the protection data on the recording medium 10a from left to right in the format shown in FIG. Write. That is, after the start mark is reached, the tempo data and rhythm data are sequentially read and stored in the tempo/rhythm axis tilt register 14.
Write in a parallel format like 7J〈D in the third row. Next, when the obbligato data mark is read, each address for ★inclusion is supplied to the address generator 16 or the offbligato data memory 18 consisting of RAM (Nundam Access Memory). , and sequentially load the read oblicart data into the memory 18. Next, when the melody data mark kvt is taken, the address generation part supplies a write address signal to the melody data memory n consisting of RAM in response to this, so that the melody data mark kvt that has been taken is They are stored in order. Then, when the sakusho data mark 't-kl' is generated, an address signal is supplied to the sakusho data memory consisting of the address generator or RAM, and accordingly, the bladder is removed. Sequentially fold accompaniment data into memory %.

Note that the register 14 and memories 18, 22 . The data to be convolved into r is limited to that read from the musical score as described above.
It may be simply recorded data on a sheet or cassette tape, or performance data obtained from keyboard operations or program system (2) switches.

The obbligato data to be convoluted into the memory ratio is determined by the obbligato data to be generated (!l-8-bit key code KO and 8-bit oblong key code LNG) as shown in Fig. 4. Each key code KO is the upper 2 bits of tC or an identification code, and the lower 2 bits are an octave code, as shown in the example for the pitch name Os.
The remaining 94 bits are note codes, and each length code L'NG is the upper 2 bits as shown in the example for eighth notes.
The bit is the identification code, and the remaining 6 bits are the note length (# note length) code.

The rest is expressed as tQj by multiplying 6 bits other than the identification code pit of key code KO. Furthermore, as will be described later, if the obligato code F'Nsl is not added to the melody data, the end code F' Nsl is added to the end of the obbligato data.
Add NSi.

The melody data written to memory nK is obliger z
The above obbligato data and ti! except that the end code FNS is added at the position corresponding to Pt of ytn! J
The Formatsutra Mausoleum. Usually, the melody performance ends earlier than the opligato performance.

Therefore, in the melody data in Figure 4, the key code KO and length between the end position of the actual melody performance and the end position of the end code 18th *end position If of the C opligato moxibustion All codes LNG correspond to rests.

The accompaniment data to be stored in the memory station is a chord to be generated, which is represented by a combination of an 8-bit key code KO and an 8-bit length code LNG, as shown in Figure 5.
For each key code KO (C major COM) VC, the upper two bits are an identification code, the lower two bits are a chord type code, and the remaining four bits are a root note code. Here, the chord type code is "00" if it is major.
, "Ol" for Mica and "IO" for Seventh. In addition, each length code LNI in the accompaniment data
Example 7 for j with halftone] The upper 2 bits are the identification code, and the remaining 6 bits are the note length code.

In the case of the above-mentioned luck reading/★-in operation, turning on the start switch sw, '4 allows the on-eisho tai-saku and/or press d indexing operation to be started. That is, when the switch SW, i is turned on, the on signal is differentiated by the differentiating circuit to rise 10 times after the system clock signal φ, and is transformed into the start signal Δ5TRT. Then, since the start signal Δ5TI (TiUR-87 resettable knob 31J is set), the output from the flip-flop is outputted from the flip-flop mode signal PL consisting of its output Q, ='lN.
AY is sent. At this time, in the continuous address increment circuit layer, the inverter's true human power number 1d is 101 l
Therefore, the inverter true output 1g = 111 is connected to the OR gate (ANL) gate A.

For this reason, ANDN-gate Fi@suspicious mode belief gPLA
When Y==%14 is generated, conduction occurs and the clock (m number φ
will be supplied to address generation participation.

When the address generator 2DII'i is initialized by the start signal Δ5TRT, it supplies the memory 4 with an address signal for output corresponding to the first read address.

Therefore, key code data corresponding to the first melody sound of Fi is output one after another from the memo I722, and the identification code signal of the upper 2 bits is sent to the data identification circuit 42 in the melody data read braking circuit 40, and the remaining 6 bits are The melody key code (octave code and ]-t code) signals are respectively supplied to a latch circuit 44 timed by a clock signal φ.

The data identification circuit 42 generates a key code detection signal MKf in response to the first key code data from the memory η, and the latch (b) path 44 latches the first melody key code signal in response to this key code detection signal MK. . and,
Melody and dikey code signal MKC from latch circuit 44
is supplied to the key press instruction circuit Tochi.

When the enable signal EN is supplied to the push-instruction circuit 4b in response to the turning on of the display select 5 switch SWl, -
Selectively control the lighting of the light emitting elements between the light emitting element groups provided along one array of the board 48, and press * to make it visible.
＜It is designed to let you. Therefore, if the first melody key code signal MKC indicates I;11j<C3 in the example of FIG. 4, the light emitting element corresponding to the Cs key lights up and is pressed.

After the press finger η\ corresponding to the first melody sound starts as described above, an address is generated! When the first clock signal φ from the AND gate is received, the length code data corresponding to the first melody tone is read out from the memory η in the same way as the previous time.

Of the retrieved data at this time, the upper 2-bit identification code signal is supplied to the data identification circuit 42, and the 6-bit melody code length code signal is supplied to the latch circuit 52, which is timed by the clock signal φ. I'll bribe you.

Then, the data identification circuit 42 outputs the length code detection signal MLi according to the first length code data from the memory η, so the latch circuit w652 outputs the first melody note length code signal as the length code detection signal ML. Latch accordingly. Also, since the length code detection signal ML at this time is supplied to the inverter, the output signal of the inverter is 10
I, and as a result, the successive address increment operation is temporarily stopped.

Thereafter, at a time delayed by approximately 2 bit times of the clock signal φ from the time when the start signal ΔBTRT is generated, a restart signal Δ8TRT'f is generated from two stages of D-7 lip-flops that are temporarily suspended by the clock signal φ. This restart signal Δ5TI (T' is passed through the OR gate 36 to
Since the ND gate 38 is formed, the address generator 2o
#'i Receive clock signal φ from AND gate 38 again. Therefore, the key code data and length code data corresponding to the second melody tone are sequentially read out from the memory η, and in response to this, the data discrimination circuit 42Fi receives the key code detection signal MK and the negative code detection signal. MLt
-111 I will give birth to my next brother. Key code detection at this time (i
The first melody key code signal is transferred from the f-number MKh latch circuit 44 to a similar latch circuit (equipment), and the second melody key code signal is latched by the latch circuit. Also, at this time, the length code detection signal M
L transfers the first melody note length code signal from the latch circuit 52 to a similar latch circuit, and causes the latch circuit to latch the second melody note length code signal, and then transfers the inverter 34t to the inverter 34t like the previous 1tIJ. - The read address increment operation is temporarily stopped δ.

Since the melody key code signal MKO#i corresponding to the second melody sound from the latch circuit 44 is supplied to the press-finger hand circuit 46, this circuit 46 uniformly corresponds to the melody sound every 24 times. Press the key to the 11th rudder. Also, at this time, the melody key code signal MKC' corresponding to the first melody song from the latch circuit is sent to the automatic melody tone forming circuit ω, so this circuit 60 is activated by the output select switch SW.

When the enable signal El is supplied in response to the input of the melody key code signal MKO/, a melody 11 signal is electronically formed in response to the melody key code signal MKO/, and is supplied to the speaker via the output amplifier 62. Therefore, the first moving melody sound is emitted from the speaker with a delay of l# minutes relative to the push instruction.

On the other hand, the melody note length code signal MLG corresponding to the first melody tone from the latch circuit is supplied to the tempo control circuit. The tempo control circuit 66 receives a melody note length code signal MLG and a melody key code number MKC, as will be described later with reference to FIG.

Key code signal KKOt for manual performance, start signal Δ8TRT, performance mode signal PLAY.

Based on the reference tempo data RTP from the register 14 and the tempo clock signal TOL and the subsequent ? Ii! 114
It generates the 1-value code NEXT, and for the first melody note length code signal MLG, when - corresponding to the second melody tone should be pressed or when it is pressed, the first successive! IJI
I41 issue NKXT'ii occurs. 4 according to the first readout #number NH, XTJd length code detection signal ML
The key code data and length code data corresponding to the third melody note #'i are supplied from the memory η to the AND gate via the OR gate 36. The melody key code signal of the second scan and the melody key code signal of the third scan are latched in the latch circuit section and 44, respectively, and the melody note length code of the second month is latched in the latch circuit section and 52, respectively. (The M number and the third melody note length code signal are latched. Therefore, in the automatic melody tone forming circuit (a), a melody tone signal corresponding to the second melody recitation is formed, and the Vi3 A key press instruction corresponding to the depth of the melody of the first test is given, and the tempo control circuit 66 performs an operation to generate a read control signal of the second test based on the second melody note length code signal. By repeating the above-mentioned operations in the same way, the automatic press *N indication and the burn on this finger pad are read out based on the data stored in the memo Ij 22, and accordingly, the data completion time w642 or the end is read out. Code detection 4g No. FN-ii is generated. This end code detection signal FN [flip-flop 30
Since 'lr is reset, the performance mode signal PLAY becomes %01y, and a series of successive data outputs from memory B are completed.

One switch 70 refers to a large number of birth switches that are respectively linked to a large number of keys on the keyboard 48, and when pressed, the key code signal KKO is sent to the manual melody sound forming circuit 72 and the tempo control described by Ou. It is designed to supply the circuit group. The manual melody layer forming circuit 72 electronically forms a melody sound No. 4m corresponding to the sound of the sound in response to the key code signal KKC, and supplies it to the speaker via the output amplifier 62. Therefore, a melody based on the manual is played from the speaker d.

In this case, if you practice manual yL on keyboard 48, while listening to the automatic melody f meeting mentioned above, and /
Alternatively, it is possible to carry out efficient training exercises while receiving automatic push-up instructions using the light-emitting element tI+. In order to enjoy this kind of responsibility, we can play the following opligato wJ, automatic accompaniment of chords or paces,
Automatic rhythmic accompaniment can also be used as appropriate.

The automatic performance of the opligato is performed by sequentially reading out the opligato data from the memory 18. That is, when the start signal Δ5TRT initializes the address generator 16, the address generator 16 is stored in the memory 18.
A read address signal corresponding to Z.sub.J is supplied to the first read address. Therefore, the key code data corresponding to the first opligato sound is read from the memory 18 and supplied to the opligato data readout control circuit 74 at the ls location, which is similar to the melody data readout control circuit 40 described above. −
t, the read address increment circuit 16 having the same configuration as the above-mentioned read address increment circuit 32 outputs the play mode signal PLAY.
The first clock signal φ is generated in response to the address ki16.
Then, the length code data corresponding to the first opricato sound of #'i is read from the memo IJ 18 and provided to the readout circuit 74.

The read control circuit 74 generates a length code detection signal OL in response to the #L first long field code data from the memo 18, and supplies it to the read address circuit 76. Therefore, the step circuit 76 temporarily stops the address step operation.

After that, the tan start signal Δ5TRT' is applied to the step circuit 76.
, the step circuit 76 supplies the clock signal φ to the address generator 16, so that the clock signal φ is output from the memory 18 to U2i.
The key code data and length code data corresponding to the eye obbligato sound are sequentially read out and supplied to the readout control circuit 74.

As a result, the readout control circuit 74 sends out the first obligato key code signal OKO and the first opligato note/code signal OLG, which are respectively supplied to the opligato tone forming circuit 78 and the note length count/ratio soft time IN180. Ru.

When the enable @ No. 1iiN is supplied in response to the input of the pronunciation select switch SW, the obbligato square circuit 78 forms an obbligato f No. kai electronic city based on the opligato key code Ig No. OKO. Something,
The opligato note name is supplied to the speaker via an output amplifier 62. Therefore, the first opligato sound is produced from the speaker.

The note length count/comparison circuit 80 includes a counter for calculating the number of stitches of the tempo clock signals TO, L (H) from the tempo control circuit (Inc.), a count output of this counter, and an opligato note length code signal 0LGtl for comparison. The counter is reset by the start signal Δ5TRT and counts the tempo clock signal TCL by 81', and when that number reaches the value corresponding to the note length of the note length code signal OLG, The ratio controller generates a matching signal No. 16. This -ku signal outputs the rc output'+ti'l 餉1 (i4 No. 0Nj4XT and L? Stepping circuit t6 K supply -GtL) while resetting the counter.

Continuation control (i number 0NEXT restarts the address increment operation sound of the step circuit 16, so the key code data and length code data corresponding to the obbligato sounds of the three techniques are successively output from the memory 18, Control circuit 74
supplied to For this reason, from the reading Ruri Wholesale Tsumugi 74, 2
``4th off Hakugo Gart key code Hakugo OKO and 2
The obbligato note length code signal OLG of the meeting is now sent out, and the second obbligato sound is put into practical use from Schiekali 4, and the note length count and comparison circuit
A counting/comparison operation is performed to determine the length of the 1st &th obbligato note.

Then, at the timing corresponding to the end of the second obbligato note length, the successive control signal 0NICXT is generated as before, so the key code data and length code corresponding to the 4I\th obligato note are generated from the memory 18. Data is read out sequentially. Thereafter, the same data read operation is repeated to accomplish automatic calculation of the obbligato. In addition, there is a 4 at the end of the opligato data! code F
When NS (Fig. 4) is added, the successive control circuit 74
When the obbligato performance ends, the end chord detection signal FN'
I'll have a meeting and reset the flip-flop 30i.
The LV completes the series of data successive operations.

By the way, automatic accompaniment based on compatibility or pace can be performed by sequentially outputting accompaniment data from a memory station. f
That is, the start signal Δ5TRT is sent to the address generator 24.
When the w period is set, the memory is supplied with the read address ID number d, which is the first read address, from the address generator. For this reason, the key code data corresponding to the first accompaniment note is successively outputted from the memory Akara, and is supplied to the accompaniment data Vt, which has the same configuration as the melody data circuit 40 of ^l1fi, and is supplied to the 1i111 Misaki circuit core. . Then, the read address short run circuit play, which has the same configuration as the successive address step 1 path 32 described in BIi, is activated in the central mode.
When the first clock signal φ is supplied to the address generator in response to the address generation, the length code data corresponding to the first accompaniment tone is successively outputted from the memory 9, and the data is supplied to the input data 82.

A length code detection signal AL is generated in accordance with the first length code data in the memory, and is connected between the escape address walk circuits. Therefore, the access path 84 temporarily stops the address idle operation.

When this mosquito starts each number Δ5TI-tT/ becomes 1kiG in the amount of the walking circuit, the clock signal φ is supplied to the address number between the stepping circuits, so the memory station corresponds to the second accompaniment tone. The key code data and length code data thus obtained are sequentially output and supplied to the readout control circuit.

As a result, the first accompaniment key code signal No. and the first accompaniment note length code No. LG are sent from the readout control circuit area, and the accompaniment tone formation (b) path and note length count/comparison circuit section, respectively. supplied to

The accompaniment vE sound forming circuit 86 generates accompaniment tone 1g based on the accompaniment key code signal ANC and the non-circular rhythm selection data.
41 as an accompaniment sound signal.
The compatibility notes corresponding to the J number chord constituent notes and the 1 that should occur
It is designed to be broadcast on TV at f numbers of paces that match the lVLIt and rhythm. In addition, the timing at which each accompaniment sound signal is sent from the accompaniment circuit is determined by the pattern generator (
The accompaniment sound signal #i is controlled in conjunction with the rhythm according to the accompaniment timing signal T from a), and is supplied to the speaker via the accompaniment sound signal #i from the circuitry amplifier 62. Using this, the first sound is produced from the speaker.

The $f length count/ratio @1 path 88 pin has the same structure and operates in the same way as the note length count/comparison circuit described above, and after initial setting by the start signal Δ8TRT, the tempo clock from the tempo control circuit. When the signal T (1!Li counts and reaches the count value corresponding to the note length indicated by the first accompaniment key code signal ALG, the read-only signal ANK is activated.
Generates XT.

Since the readout signal ANEIT fully opens the address step operation of the step circuit 8, the key code data and length code data corresponding to the third accompaniment tone are sequentially read out from the memory 'ff. It is supplied to the escape control circuit 82.

Therefore, from the read control circuit 1R182, the second accompaniment key code signal AKC and the second accompaniment note length code @+j
ALG is now sent out, and the second accompaniment tone is required from speaker I, and the note length counting and comparison (b) step section performs counting and comparison operations regarding the second accompaniment note length. be exposed. Then, at the timing corresponding to the 21st accompaniment note length, read out the signal M in the same way as the VJ time.
Since ltxT is generated, the key code data and length code data corresponding to the fourth accompaniment tone are used from the memory %. Thereafter, the data reading operation is repeated in the same manner, thereby performing automatic accompaniment of chords or paces.

Incidentally, the automatic rhythm accompaniment is performed by repeating the action of generating a percussion instrument sound in a predetermined pattern for a specific rhythm pattern (?lJeha waltz) specified by the rhythm type data RRY from the register 14. Ru. That is, the pattern generator (a) is configured to repeatedly read out a specific rhythm pattern designated by the rhythm inference data RRY from the register 14 in response to the tempo clock signal TOL from the tempo control circuit. , the rhythm pattern signal RP from the pattern generator (a) drives a percussion device sound source such as a bass drum, snare drum, maracas, and cymbals in the rhythm sound forming circuit n to generate a rhythm sound signal, thereby forming a rhythm sound. The rhythm sound signal from circuit 92 is supplied to the speaker via output amplifier 62. As a result, the automatic rhythm system is put into practical use from the speakers.

Next, the operation of the tempo control circuit will be explained with reference to FIG. 6.

Before the start signal Δ5TRT is generated, the performance mode signal PLAY-%Q# is applied to the R-8 flip 70 knob 104 via the inverter 100 and the OR gate 102'.
Since it is reset, the output Q=%Ol of the flip-flop 104 is supplied to the selector circuit 106 as a signal for selecting the input B. Therefore, the selector circuit 106 outputs the divided data of %01 in all 4 bits from the branch data generation circuit 108 to the programmable counter 1.
10.

When the start signal Δ8TRT is generated, this signal Δ5
Since TRT is supplied to the counter 110 as load No. 16 LD via the OR gate 112, the counter 11
0 is loaded with all 4-bit %01 minute data, and the frequency division ratio of the counter 110 is set in proportion to this frequency division data. Therefore, the counter 110 divides the clock signal φ using the set frequency division ratio and outputs a carryout signal Co'.
(H is generated. This carryout output CO is supplied as the load signal LD to the counter 110 via the OR gate 112'.
Every time Fi carry out output co'1 occurs, the selector [! It operates to take in the branch data from the second circuit 106 and produce the next carryout output aow'.

The carryout output CO generated one after another from the counter 110 in this manner is supplied to the counter 114 as a clock input OK. Therefore, the counter 114 outputs COk and the giii! The i output is supplied to the specific soft circuit 116 as one specific soft power A.

One power, tempo correction circuit 118t, 1st chart register 1
Standard tempo data from 4 RTP'i manual modification [
Based on the operation information of the operator 120a of 120, the overcurrent is corrected and the register 122.1 is stored as tempo data RTP'.
24.126, and the tempo data RTP'
When set to the ``+'' position, tempo data indicating a faster tempo than the standard tempo is set to the ``-'' position. Then, tempo data indicating a tempo slower than the standard tempo is sent. Start every issue Δ13'l
'RT register 122.1 via OR gate 128
Since the preset signal ps is supplied to the registers 122, 124, and 126 as the preset signal ps, when the start signal Δ5TRT is generated, the registers 122, 124, and 126 are supplied with the tempo correction circuit 1
The tempo data RTPI from 18 is preset.

For this reason, register 126 ij tempo de de RTP"
ii) is supplied to the comparative soft circuit 116 as the other comparative human power B. The tempo data RTP' sent from the register 126 at this time is for setting the initial tempo.

Comparison circuit 116 compares soft inputs A and B, and when they match, generates a match signal BQ. This-Lfs issue EJ
``l: The counter 114 is reset via the D-flip-flop 1 (capital), so the counter 114 calculates the number of bp + the carrier output C0tit of the reset.Then, the same operation is repeated, and the soft circuit 116
From then on, each issue E repeats in a cycle corresponding to the standard tempo.
Q is generated.

The coincidence signal 1cQ generated in this way is generated by the output signal = -11 of the NmND gate 132.
D game) Tempo clock signal TCL via 134i
Sent as . The tempo clock at this time @'@T
Since the tempo data from the OLFi register 126 has a frequency that corresponds to the initial tempo of the beat, the spinning automatic rhythm tone is required at a tempo that corresponds to the standard tempo or the modified tempo.

Next, when the performance mode signal PLAY becomes 11', this signal PLAY is transferred to the inverter 136. and OR gate 13
8 'i to cancel the reset to the counter 1401.

Therefore, the counter 140 uses the tempo clock signal TCL.
'1iii, and the counting output is supplied to the comparator circuit 142 as one of the soft input cams. As the other soft input B of the comparison time 142, a melody note length code signal MLG corresponding to the first melody tone is provided from the melody data output time %40 in FIG.

The ratio soft circuit 142 compares the ratio soft inputs A and B, and during the period of B, supplies the output signal = 111 to the inverter, 144, and the ND gate 146-, and when A = B, outputs the output signal -11. OR gate 102 and AND gate 148.
150 and 152, and an R-8 flip-flop 154. Note that the output signal corresponding to M=B is %11
Then, the output No. 18 corresponding to Muku B becomes 'OI', and the output of the NAND gate 132 (No. 8 or %QI), inhibiting the sending of the tempo clock @ No. TOL from the AND gate 134.

The time point at which the ratio soft circuit 142 generates the output signal corresponding to A=13 corresponds to the time point at which the keys should be pressed together corresponding to the second melody tone. At the same time that the first melody note length code signal MLG is connected to the ratio soft circuit 142, /l is also connected to the ratio soft circuit 142. A melody key code signal MKC corresponding to the second melody tone is supplied to 1156 as one Himokujin cam. 1. If the comparison circuit 142 generates the output 1 corresponding to A=B with the key corresponding to the second melody note, then the key code 16 corresponding to that press is assumed to be pressed. No. KKC or soft circuit 156 is assigned as the other comparative human power supply B. 1 For this reason, when Hiei times tar 156 rj: Hiei times A and B match and the key codes match, a match signal E is generated.
Generate Q. This coincidence signal EQ is the key code signal K
The value division circuit 1 is connected via the AND gate 160, which is made conductive by the any-key-on signal AKO from the OR gate 158, which is input as KOi, and further via the OR gate 162'e.
64. The differentiating circuit 164 differentiates the input signal at this time to generate the M first key-on signal KON, and this signal KON connects the AND gate 152 which is turned on by the output signal corresponding to A=B from the comparing circuit 142. It is further sent out as the first read control signal NfCXT via the OR gate 1-166i. This first read control signal Nff1XT causes the counter 140'i millimeter to be reset via the OR gate 138.
The reset tempo clock signal T'OL
Count 1r.

Note that when the melody key code signal MKC corresponds to a rest, the rest detection circuit 168 generates a whole body code Kenda Tsukuji and makes the AND gate 148 conductive. Then, when an output signal corresponding to A=B is generated from the comparator circuit 142, this output signal is supplied to the differentiating circuit 164 via the AND gate 148'i and further via the OR gate 162. Similarly, key-on signal KON
and read IIJ bait signal NRiXT are generated.

The above is the case of a key press corresponding to the second melody sound or a coincident key press made in l-coincidence at the time of generation of output No. 16 which is ticked at A=B from the ratio soft circuit 142. It works though! ＋The key timing was early, etc.)! ! In the case of power/loss, a series of ftt+j# information NEEXT is generated as follows.

146 * Bui' L "C Key
, t on (g % K ON cuff flip flop 10
By setting 4t, the output Q of Norinbu Frosob Jun 4
= '1' Input A (Il
-Supplied as No. 11 SA of the trap to select δ/). C, selector circuit 106 is branch data generation circuit 108
Kari's fast-forwarding data "0100" was chosen incorrectly and the force was 9.
Nta 110 and Kaichocho. As a result, the timing of Yayari Out Tajiki CO from counter 110 is approximately 25%.
Accordingly, the chest pulse frequency F of the tempo clock signal TCL and the tempo become faster.

When the frequency of the tempo clock signal TOL increases, the counting speed of the counter 140 increases, and the comparator circuit 142 outputs the output value number corresponding to Mo-B, -%l, faster than in the case of a coincident key press.
#i occurs. Flip-flop 154 ti is set by the key-on signal KON, and its output Q =
%l# is conductive through the D-flip-flop 170t.

Therefore, the output signal=-11 corresponding to M=B from the comparator circuit 142 is passed through the MND gate 150 and further ORed.
Game) 166'! l- via read control signal NKXT
Sent as . Note that since the flip-flop 104 is reset according to the output signal corresponding to M=B from the comparator circuit 142, the selector circuit w110 is reset accordingly.
6 becomes the channel for selecting the input B1r, and the frequency of the tempo clock signal TCL returns to its original low value.

On the other hand, in the case of a slow press, when the output signal -111 corresponding to A-B is generated from the comparator circuit 142, the output signal of the NAND gate 132 is %OIK, and the AND gate 134 ((via Therefore, the counter 140 stops the counting operation. During this period, when the key-on signal KON is generated, this signal KON is output from the comparison (b) path 142 to A-B. AND gate 15 conductive by an output signal corresponding to
(via 2, OR game) 166 Completely complete and send as readout #scar code NB-XT.

Next, we will take a closer look at the tempo tracking control system. counter 1
The carryout output CO from 10 is oJi frequency divider circuit 1
72, the breaking melody note length code signal MLG
The frequency is divided by the dividing ratio corresponding to the note length indicated by . i] The frequency division output No. 18 from the variable frequency division circuit 172 is connected to the AND gate 17 which is made conductive by the output signal -%lJ of the inverter 174.
6' to a counter 178, where it is counted as tt. -■Variational frequency division circuit 172 This is probably provided to ensure that the 8↑ number of the counter 178 is equal for all notes, and -& notes are configured so that the frequency ratio is large. ing.

Initial tempo data from register 126 Fi multiplier circuit 1
80 is multiplied by 0.5 and supplied to the comparison circuit 182 as input B, and the counter 17 is used as the human cam of the comparison circuit 182
IT number data of 8 is supplied. Comparison circuit 182 compares input cam and B1r, and outputs No. 16-%l during MukuB.
'1r AND gate 1 mixture is supplied, and when it becomes A-B, the blade signal -%ll-2p-7 lip flop 186 'i
The reset power R is supplied to the R-8 flip-flop 190 through the OR gate 188. The flip-flop 190 is initially reset by the start signal ΔS TRT from the OR gate 188, but after that it is determined whether it is set or reset.
It depends on the timing at which the key corresponding to the melody sound is pressed, that is, the timing at which the first key-on No. 1M KON is generated.

Here, if the iIL's first key-on signal KON is generated at a timing earlier than 50% of the initial tempo, the key-on signal KON is made conductive by the output signal -tII corresponding to A (B) from the comparison circuit 182. The flip-flop 190 is set through the AND gate 184. Therefore, the output of the flip-flop 190 is Q=%lI.
AND gate] 92 becomes conductive. Then, when the comparison circuit 182 generates an output signal=111 corresponding to Mo-B at a timing corresponding to the initial tempo of 50, the output signal is applied to the Mu ND gate 192 and OR gate 194.
The signal is supplied as a latch command signal to the latch circuits 196, 198 and 0 through the counter 202 as a clock input OK. After this, comparison episode #61
The output signal -%lj from 82 corresponding to M=B resets the norbit flop 190 via flip-flop 186 and OR gate 188'ff.

- The first key-on signal KON is 50 degrees of the initial tempo.
The output signal = 11' corresponding to MU = B generated at the timing in the range H of % to Zoo % or 1 (3) timing is supplied to the flip-flop 190 through the flip-flop 186 and the OR gate 188t-valve. Reset condition 1
Continue il11r. Next, flip-flop 1
The output Q=%QI of 90 is outputted to AN via the inverter 204.
DN-Gate 6 is made conductive, and Keyon No. 91 KON is A.
ND gate 2% and OR take-194ft: Intermediate:>
f@11.196.198 and 200, and the counter 202.

OR gate 1 generated by any of the above methods
The output signal from 94 is the latch time T#! The counting data from the counter 178 is loaded into r196, and the counter 2]2i1 is incremented. After this, counter 1
78 responds to the first key-on signal KON by 55 and reads fc's first read i! It is reset by the III control signal NEXT.

In this case, the count data (measured tempo data) latched at the latch time w1196 is the first key-on signal KO1.
If the occurrence timing of j (that is, the key press timing corresponding to the melody rate of 2nd test 1) is 50 seconds earlier than the initial tempo, it is count data corresponding to the initial tempo of 501s; 50 fights to 125
If it is within the range of %, it is count data corresponding to fast key presses, coincident key presses, or slow press keys within that range.

Therefore, even if the timing at which the first key-on signal KON is generated is later than the initial tempo of 125'In, the count data corresponding to the initial tempo of 125'In is stored in the latch circuit 1.
It is latched at 96. That is, the initial tempo data from the register 126 is multiplied by 1.25 in the multiplication circuit 208, and is supplied to the comparison circuit 210 as input B.
It is compared with count data supplied as input A from 78 to comparator circuit 210. Then, when the comparison circuit 210fi, the input cam, and B match, the match signal B (4 = supplied to the s1z inverter 174, so the output code of the inverter 174 at this time = AND go according to %Ql) 176
becomes non-interrogating and stops supplying the number 1M to be counted to the counter 178. As a result, the total a11i of the counter 178 never shows a value greater than the value corresponding to 125% of the reference tempo.

As mentioned above, the first successive control itl signal NHXTFi
Since the melody data corresponding to the third melody sound is read from the memory 22 (FIG. 1), the ratio*9 circuit 142
Note length code signal ML corresponding to the second melody note
G is supplied, and the comparison circuit 156 is supplied with a key code signal MKO corresponding to the third melody tone. After this, when the key corresponding to the third melody note is pressed,
The second key-on signal KOM and the second readout control are performed in the same manner as in the case of pressing the key corresponding to the second melody sound! A signal NEIT is generated.

Second trajectory side l! The signal NEXT causes the counter 178 to be reset, but the reset @ previous count data is OR
In response to the output signal of the gate 194, the signal is latched by the latch circuit 196 in the same manner as the cutting ring. Further, the count data corresponding to the 29th melody tone key depression, which was latched in the latch circuit w1196, is latched in the latch circuit 198 in response to the output signal of the OR gate 194.

Also, since the output signal of the OR game) 194 at this time is supplied to the counter 202, the counter 202/rr.

Perform the second count.

After the melody data corresponding to the 4111th melody tone is read out in response to the 2% readout control signal IJKXT,
When the key pressed corresponding to the fourth melody tone is pressed repeatedly, the count data corresponding to the key pressed for the fourth melody tone is stored in the latch circuit 196 in the same manner as described above.
The number of stitches data corresponding to the key press of the third melody sound is latched in 98, and the count data corresponding to the key press of the second melody sound is latched in the latch circuit 200. The latched divisor data are respectively supplied to the arithmetic circuit 212 as inputs A, B, and C, and subjected to an averaging operation 'S of (A+B+O)/3.

Further, since the output signal e from the OR gate 194 at this time causes the counter 25J2 to perform the third count operation, the counter 202 generates a carry output CO.

The D-7 lip flop 214t- is timed by the carryout output CO from the counter 202.
The tempo data RTPI that was previously set in the register 122 is replaced with the averaged data from the tx arithmetic circuit 212.

Thereafter, when the keys corresponding to the 5th, 6th, and 7th melody tones are sequentially pressed, the calculation circuit 212 generates the count data regarding the presses of the 5th to 7th melody tones in the same way as described above. is averaged, and the averaged data is loaded into the register 122 according to the output signal of the flip-flop 214. Furthermore, the previous averaged data from the register 122 is loaded into the register 214 in accordance with the output signal of the flip-flop 214 at this time.

The previous averaged data from register 124 and the current averaged data from register 122 are supplied to comparator circuit 216 as inputs A and B, respectively, and 1'-Bl<15
An approximation of % is added, but it is determined. When this approximate multiplier □ is satisfied, the comparison circuit 216 Fi outputs a signal %II, which is passed through the AND gate 218 k4.

Then, when the D-7 lip 70 tube 220 which inputs the output signal of the flip-flop 214 generates an output signal -51g in synchronization with every clock φ, this output signal is A
Since it is supplied as a load signal LD to the register 126 via the ND game (ND game) 218, the previous averaged data is loaded from the register 124 to the register 126. At this time, the register 126 is set to the 2nd to 4th melody sounds instead of the previously preset initial tempo data.
The frequency of the tempo clock signal TOL, that is, the tempo of automatic performance and automatic key press instructions, is controlled to follow the manual performance tempo. For example, if the value of the averaged data regarding the 2nd to 4th melody sounds is larger than the value corresponding to the initial tempo e due to slow key presses, the frequency of the tempo clock signal TOh becomes low, and automatic performance and eye movement Press #! The tempo of the first hour follows the manual attack tempo and becomes a bell.

In addition, if the above approximation condition is not satisfied, ratio IIIZ
Since the output signal of circuit 216 is determined by turtle OI, register 1
26 is not found in 1111M, and the frequency of the tempo clock signal TCL maintains the value corresponding to the initial tempo.

The above-described tempo follow-up control operation is performed in the same manner for key presses after 711. If the following tempo is too fast or too slow, turn on the tempo return command switch 5w41 and register 122.12.
By presetting the tempo data RTP'l to 4 and 126, the frequency of the tempo clock signal TOL can be returned to the standard tempo or the one corresponding to the tempo modified by the operator 120a.

According to the above embodiment, if there are two or three mistouches, the tempo follow-up control operation will not be performed, so when manual performance is performed at the normal tempo, the tempo matching with automatic performance and automatic key press instructions will not be performed. This makes it easy and convenient. In addition, when a performer performs a manual performance at a nearly constant tempo depending on his or her passion or skill level, the tempo of automatic performance and automatic key press instructions is automatically changed and controlled to follow the manual performance tempo. As a result, the performer can concentrate on practicing the performance without having to worry about adjusting the tempo, etc., and practice efficiency is improved.

In addition, in the above embodiment, three latch circuits 196, 19
8 and 200 are provided, but this may be further multi-staged. Also, if the tempo increase rate is not limited to 25, flip-flop 190, AND game) 192
etc. may be omitted. Furthermore, tempo] descent rate 'fc25
The inverter 174 and the like may be completely omitted if there is no limitation to the above.

[Brief explanation of drawings]

Figure 1 is a block diagram of an electronic musical instrument according to an embodiment of the present invention; Figures 2, 3, 4 and 5 are data formats used in the electronic musical instrument; The diagram shows the tempo control circuit of the electronic musical instrument mentioned above.
4 - FIG. 4 is a circuit diagram illustrating an example. lO...Musical instrument, 10a...Recording medium, 12...Genealogy data reading device, 14...Tempo/rhythm ha register, 18°O, 26...Data memory, 40,74
, 82... Data read system # circuit, 46... Key press instruction circuit, 48... Keyboard, ω... Automatic melody sound forming circuit, 122, 124, 126... Register, 17
8...Counter, 196, 198, 200.
...Latch circuit, 212... Arithmetic circuit, 216...
Comparison circuit, BW4 --- Tempo return command switch. Applicant Nippon Musical Instruments Co., Ltd. Agent Patent Attorney Satoshi Izawa Figure 4 Figure 5

Claims (1)

[Scope of Claims] 1. A keyboard, a storage device that stores musical score data, a readout circuit that sequentially outputs MTI recorded musical score data from this storage device, and key press data from the -board and an 81J distribution memory. A tempo control circuit for controlling the successive tempo by the sharpening circuit to follow the manual Rinkai tempo on the keyboard based on the successive data from the device; is the first one that stores tempo data.
a register, a measurement circuit for tracing the manual performance tempo for each successive key press based on the key press data and the -&a output data, and a measurement circuit for temporarily storing the measured tempo data from the measurement circuit. 2 register, the previously measured tempo data from this second register, and the currently measured tempo data from the Ayasaidoashi circuit to determine whether each value satisfies a predetermined approximation condition; a discriminating circuit that causes the first register to take in the measured tempo data from the second register only when the above is satisfied; It is becoming increasingly popular to control electronic musical instruments. 2. Range of 41H'F-Determination In the electronic musical instrument described in item 1, the measuring circuit performs a total averaging operation of -j-foot tempo data corresponding to each pressed key for each # consecutive numbered key pressed. The calculation circuit (b) that stores the measured tempo data from this register, and the register that stores the tempo data of both sides at once, and the measured tempo data from this register or the register of @2 and the above-mentioned discrimination. An electronic musical instrument characterized by being adapted to be supplied to a circuit. 3. In the electronic musical instrument according to claim 1,
The electronic musical instrument is characterized in that the tempo control circuit includes a tempo follow-up control circuit for preventing the successive tempos from exceeding a set value and following the manual performance tempo. In the electronic musical instrument described in paragraph 1 of the 48% needle Zhao Qiu category m,
The distribution tempo control circuit includes a means for generating standard tempo data and a tempo am command means, and according to the command output from the command means, the 811 standard tempo data is distributed as is or after extensive modification. An electronic musical instrument characterized by a first register. 5. Scope of Ascension Visit In the electronic musical instrument described in paragraph 1,
BC1 tempo! ill (The 1M1 circuit has a detection circuit that detects all key presses on the music layout w board earlier than the key press timing of the 8th generation of Denhokokuki and the MiJ release data. In other words, the electronic system is configured to accelerate the read tempo by adjusting the frequency of the tempo clock signal in accordance with the detection output from the detection circuit.6. In the electronic musical instrument according to claim 1,
The 6C tempo fhlJ@ circuit includes means for generating a tempo clock signal, and a detection circuit for detecting that no key has been pressed on the previous two keys by the press timing indicated by the Mi+ recorded data, In response to the detection output from this detection circuit, the writing clock signal is generated as described above in iii!
An electronic musical instrument characterized by delaying the reading tempo by temporarily stopping until a key is pressed on a keyboard. 7. The birth board, the recording device that stores the musical score data, the passage that reads out the @ki musical score data from this storage device, and the above-mentioned il [! a tempo circuit that controls the read tempo by the bladder output circuit to follow the manual playing tempo on the keyboard based on key press data from the keyboard and read data from the distribution/distribution device; In the electronic musical instrument, the tempo control circuit includes a first register for storing tempo data IIr:, in an electronic musical instrument equipped with a push instruction means to be pressed in a *word in 1 based on the data. and a measuring circuit that adds #J for every subsequent 4J 1st grade key press based on the key press data and the read data, and temporarily stores the measured tempo data from the W(b) path. Compare the Mu times' constant tempo data from the second register with the current measured tempo data from the measuring circuit to determine whether each value satisfies a predetermined approximation condition. And only if it is satisfied, enter the first register of siJ! VIJ
A discriminator circuit that takes in the measured tempo data from the second register, and a gold standard! An electronic musical instrument characterized in that the read tempo is controlled based on output data from a first register. 8.- board, a storage device for storing musical score data, and this M
The reading (b) path sequentially reads out the musical score data from the r2 storage device, and the readout (reading tempo by the!2 circuit) based on the press data from the Aij keyboard and the readout data from the i11 storage device. In the electronic musical instrument, the electronic musical instrument is provided with a tempo control 41 circuit for controlling the tempo to follow the manual performance tempo on the keyboard, and a tempo control means for carving the tempo of the tempo on the basis of the read data. The control circuit has a first register that stores tempo data, and a plurality of consecutive presses of the manual performance tempo based on the press data and the read data. i! a second register that temporarily stores the measured tempo data from the constant circuit; and a second register that temporarily stores the measured tempo data from the second register and the current performance from the measuring circuit. Compare the 1j foot tempo data to determine whether each value satisfies a predetermined approximation condition, and only if the approximation condition is satisfied, read the measured tempo data from the second register into the first register. 1. An electronic musical instrument, characterized in that the electronic musical instrument includes a discriminating circuit for determining whether f# is included, and is configured to control an @distribution output tempo based on output data from a f# distribution first register.