JPH0230029B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to an electronic musical instrument that can automatically perform canon performances. One of the techniques for composing music is the canon. In this technique, a part called a preceding phrase is first presented, and a part called an additional phrase follows the preceding phrase after an appropriate interval. I'm starting to do that. There are various types of canon, such as direct canon, retrograde canon, expanding canon, decreasing canon, and retrograde canon.
For example, ring chanting is the most common example of a direct canon. Now, conventionally, this canon performance is performed while looking at the score or improvised. However, improvising is extremely difficult even for advanced players. On the other hand, an electronic musical instrument that can perform this canon performance automatically has been invented (Japanese Patent Application Laid-open No. 68407/1983). This electronic musical instrument "generates musical sound signals by key press operations, and stores and retains the key signals produced by the key press operations played during one measure for the next measure. At the same time as the musical tone signals played during the period are generated, musical tone signals are generated in accordance with the order in which the key signals are played using the stored key signals, thereby obtaining a ring-singing effect. As stated in this claim, the purpose is to create a ring-singing effect. By the way, in the case of this electronic musical instrument, it is not possible to change the pitch difference between the preceding phrase and the additional phrase, the delay time of the additional phrase from the preceding phrase, etc. There is a drawback that it cannot perform canons, etc., and furthermore, since this electronic musical instrument is designed to memorize the key signal according to the tempo pulse that is the basis of the tempo,
It has the disadvantage that the memory capacity for storing the key signal is large. The present invention has been made in view of the above circumstances, and its purpose is to provide an electronic musical instrument that requires a small memory capacity and is capable of automatically performing canon with a simple configuration. In addition to this common objective, each invention has further objectives: First, an object of the first invention (the invention described in claim 1) is to provide an electronic musical instrument that can arbitrarily set the delay time of a follow-up phrase in a canon performance. Second invention (invention stated in claim 4)
The object of the third invention (the invention set forth in claim 6) is to provide an electronic musical instrument that can arbitrarily change the pitch of the accompaniment phrase in canon performance. Fourth invention (invention stated in claim 7)
The purpose of the present invention is to provide an electronic musical instrument that can automatically perform various canon performances such as retrograde canon in addition to normal canon performance. Fifth invention (invention stated in claim 8)
The purpose of the present invention is to provide an electronic musical instrument that can automatically perform a wide variety of canon performances such as enlarged canons and reduced canons. Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings. First, the canon that is automatically played in the embodiment described below will be explained. (1) Orthogonal canon: As shown in Figure 1 A, this canon is one in which the follow-up phrase CO simulates the preceding phrase AN under a certain delay time and a certain pitch difference, and is used as a canon method. It is definitely a regular thing. (2) Retrograde canon: As shown in Figure 1B, in this canon, the follow-up phrase CO follows the preceding phrase AN by a certain delay time, a certain pitch difference, and in the opposite direction to the pitch change of the preceding phrase AN. to imitate, i.e., the antecedent phrase
If AN is in the upper line, the additional clause CO is in the lower line, the preceding clause
If AN is in the descending line, the additional clause CO is in the ascending line, and so on. (3) Expanded canon: As shown in Figure 1 C, in this canon, the follow-up phrase CO repeats the preceding phrase AN by a certain delay time, a constant pitch difference, and a factor of n (in the example shown in Figure 1 C, twice). ) is imitated under the note length. Note that in this specification, the length of a note or the length of a rest are both referred to as note length. (4) Decreasing canon: In this canon, as shown in Figure 1 D, the follow-up clause CO delays the preceding clause AN by a certain delay time,
This imitation is performed under a constant pitch difference and a note length of 1/n times. (5) Retrograde canon: As shown in Fig.
The CO imitates the preceding phrase AN from the last note to the first note with a certain pitch difference and a certain delay time. When attempting to automatically play such various canons on an electronic musical instrument, in addition to the function of memorizing the pitch and note length of each note in the preceding phrase, the following first function is required.
It is necessary for electronic musical instruments to have the functions shown in the table.

【table】 Then, all of these functions will be provided, and the above-mentioned
Now you can automatically play all the various canons you have created.
The implementation of this invention is shown in FIGS. 2 to 8.
This is an example (electronic organ), and this example will be described below.
I will explain. Figure 2 shows a schematic structure of an electronic organ according to the present invention.
FIG. In this diagram, the key
The keyboard circuit 2 is provided corresponding to each key of the keyboard 1.
It has multiple key switches, and the player can
This will activate the corresponding key switch.
corresponds to the activated key switch when activated.
(i.e., the key that corresponds to the key operated by the performer)
- generates a key code, and sends the same key code to musical tone generator 3.
(musical sound generation means) tone generator (hereinafter referred to as
(abbreviated as TG) 4 and automatic cannon.
Supply to device 5. The automatic canon device 5 has a keyboard circuit.
The key code output from route 2 and this key code
information indicating the duration of the chord (these are combined with musical note information)
) is stored as the musical tone information of the preceding phrase, and this record is
Musical tone information of the additional phrase based on the memorized musical tone information
(Indicates the key code and the duration of the key code.
information). In this case, the preceding clause of the additional clause
delay time for or pitch for the preceding phrase
Differences, etc. are specified using the operation unit 6. And this
The musical tone information of the additional phrase formed by the device 5 of
Of these, the key code is output to TG7 of musical tone generator 3.
It will be done. Musical tone generator 3 has TG4, 7 and sound
It consists of system 8. TG4 is keyboard circuit 2
The key code output from (the key code of the preceding phrase)
TG7 generates a musical tone signal corresponding to
Key code (additional) output from automatic canon device 5
generates a musical tone signal corresponding to the key code of the line.
Ru. These musical tone signals are then mixed.
After that, it consists of an amplifier circuit, a speaker, etc.
Canon performance on sound system 7
pronounced as a sound. In addition, in this example, the circuit configuration is a single tone structure.
It has been completed. Therefore, multiple keys may be pressed at the same time.
If it is pressed, one key will be handled from keyboard circuit 2.
Now only the key codes that are
Ru. Also, the key code corresponding to each key is on the bass side.
It is numerical data that increases sequentially by "1" from
For example, the lowest key key code "10" (in decimal notation)
It's summery. In the electronic organ configured in this way,
The keyboard 1, the keyboard circuit 2, and the musical tone generator 3 are constructed using well-known components.
The circuit is as follows: automatic canon device 5 and operation
Section 6 will be explained in detail. Figure 3 shows the structure of the automatic cannon device 5 and the operating section 6.
This is a block diagram showing the structure of the
Key code change detection circuit 11, ring counter
Circuit 12, delay time measurement circuit 13, note length measurement circuit
circuit 14 (data conversion means), arithmetic circuit (data conversion means),
The details of the exchange means) are shown in Figures 4 to 8, respectively.
There is. In FIG. 3, terminal T31 is connected to keyboard circuit 2 (no.
Terminal to which the key code of the preceding phrase is supplied from (Figure 2)
and the key of the preceding phrase output from keyboard circuit 2
The code detects the key code change via the same terminal T31.
Output circuit 11 and n key code memories (below)
Below, abbreviated as KM) 17-1 to 17-n (memory)
means). The key code change detection circuit 11 detects the above key code.
Detects changes in key operation, that is, changes in key operation on keyboard 1.
As shown in Fig. 4, the delay circuit 1
1a and a comparison circuit 11b. child
, the key supplied to terminal T41 (Fig. 4)
The code is supplied to the A input terminal of the comparator circuit 11b.
On the other hand, in the delay circuit 11a, a predetermined time (for example,
After a delay (for example, 1 μS), the B input of the comparator circuit 11b is
Supplied to the power end. Therefore, terminal T₄₁supplied to
If the key code being set changes, the comparator circuit
At the A input terminal of 11b, at the same time as the key code changes,
The key code after the change is supplied, whereas the comparison
The key code before the change is at the B input terminal of circuit 11b.
Supplied. As a result, when the key code changes
At this point, the signals at both input terminals of the comparator circuit 11b are slight.
The time (1μS) does not match, which causes the comparison time to
Detection signal DEL from the output end of path 11b (A≠B)
(Pulse width: 1μS) is output. And this
Detection signal DEL is at terminal T₄₂through the delay circuit 20
(Figure 3) input terminal and ring counter circuit 1
2 terminal T_5asupplied to In addition, the key mentioned above
A code change is when the key code becomes "0"
(if the key is newly released), or from "0"
If the key code changes to some kind (the key is changed to a new one)
Of course, this also includes the case where the button is pressed. Also, below
When referred to as "key code" in this specification
is when the key code = “0” (i.e., the key operation is
If there is no music, it is a place for a rest in musical notation.
) shall also be included. All of the KM17-1 to 17-n mentioned above are
Memorize the key code supplied via terminal T31
RAM (Random Access Memory)
and connect the ring cowl to the write enable terminal WE.
A “1” signal (at a binary logic level) from the converter circuit 12
When a “1” signal (hereinafter the same) is supplied,
Read the key code supplied to the data input terminal
and connect the programmer to its read enable terminal RE.
A “1” signal is supplied from the bull ring counter 22.
The stored data will be transferred from the data output terminal.
It also outputs a reset signal Re to the reset terminal R.
(“1” signal) is supplied, it is reset.
Note that a “0” signal (at binary logic level) is applied to terminal RE.
“0” signal; the same applies hereafter) is supplied.
When the data output terminal becomes high impedance,
Ru. And each data of KM17-1 to 17-n
The data obtained at the output end is transmitted through the respective bus lines.
terminal T of the arithmetic circuit 15₈₁supplied to Provided at the bottom of KM17-1 to 17-n mentioned above.
n time memories (hereinafter abbreviated as TM)
) 23-1 to 23-n (storage means) are
of the key code supplied via terminal T31 respectively.
Duration, i.e. corresponds to the supplied keycode
RAM that stores the note length of notes to be played.
The output of the counter 24 that measures the length is the data input.
TM23-1 to 23-n
Each output is connected to the note length measurement circuit via the bus line.
Terminal T of path 14₇₄supplied to Also, these
TM23-1 to 23-n are respectively KM17-1 to
Similar to 17-n, its write enable terminal
“1” signal is sent to WE from ring counter circuit 12.
When supplied, the
Read the data from the read enable terminal.
From programmable ring counter 22 to RE
When a “1” signal is supplied, the stored data
is output from the data output terminal, and its reset terminal R
When the reset signal Re is supplied to the
In addition, a “0” signal is supplied to the terminal RE.
When the data output terminal is high impedance
becomes. Ring counter circuit 12 is KM17-1~17
-n and TM23-1 to 23-n respectively.
This is the circuit that supplies the signal, and as shown in Figure 5,
counter 12a, monostable multibar
Ibreta (hereinafter abbreviated as MM) 12b, Anne
gate 12c, delay circuit 12d and R/S
Lip-flop (hereinafter abbreviated as FF) 12e
It consists of Ring counter 12a is n bits
This is a ring counter with a reset terminal R.
When a “1” signal is supplied from MM12b to
Q₁Only the output terminal becomes a “1” signal, and the clock
Each time a pulse signal is supplied to the terminal CK
Q₂,Q₃，…Q_o-1,Q_o,Q₁It circulates sequentially like...
In this case, each output terminal becomes a "1" signal.
MM12b is at the rising edge of the Q output end of FF12e.
A pulse-like “1” signal is generated when the power is turned on and the power is turned on.
output and reset the ring counter 12a.
It is. Also, AND gate 12c and delay
The circuit 12d has a terminal T_5athe detection signal supplied to
Circuit for removing the first pulse of No.DEL
It is. That is, the automatic cannon device shown in FIG.
5 is in a state where automatic canon performance is possible, the performer
The key code corresponding to the first key pressed is this
In the embodiment, it is necessary to store it in KM17-1.
Therefore, the above key code is output.
At the point when the terminal T of the ring counter circuit 12₅₁
must be a “1” signal. By the way, the performance
The detection signal DEL is activated in response to the first key pressed by the player.
terminal T_5a(Fig. 5), the same detection signal
DEL sets FF12e, resulting in FF12e
The Q output terminal of MM12b rises to “1” signal.
A pulse signal is output from terminal T₅₁is “1” belief
However, at this time, the simultaneous detection signal DEL is reset at the same time.
is supplied to the clock terminal CK of the clock counter 12a.
When the Q of the ring counter 12a₁of the output terminal
“1” signal is Q₂Go to the output terminal and this will close the end
Child T₅₂becomes a “1” signal. like this
Delay circuit 1 was provided to eliminate the inconvenience.
2d and an AND gate 12c. Sunawa
Then, the first detection signal DEL is supplied to FF12e,
The signal of the Q output terminal of FF12e becomes “1” signal.
When the signal goes up, the “1” signal is sent to the delay circuit 12d.
and is delayed for a predetermined time (more than 1μS), and
It is supplied to one input terminal of the gate 12c. did
Then, the first detection signal DEL is connected to terminal T._5asupplied to
The output of the delay circuit 12d is “0” at the time when
signal, and the AND gate 12c is in the “off” state
It is in. As a result, the first detection signal DEL is
The second detection is blocked by gate 12c.
Clock of ring counter 12a from signal DEL
Supplied to terminal CK. In addition, the edge in Figure 5
Child T_5ris supplied with a reset signal Re. This resource
The set signal Re is
When position 5 is not in a state where automatic canon performance is possible
When the signal becomes “1” and automatic canon performance is possible,
In this case, it becomes a “0” signal. The counter 24 (Fig. 3) is connected to the terminal T₃₁supplied to
The sound of the note or rest that corresponds to the key code
It measures note length. In other words, this cow
The sensor 24 receives a detection signal from the key code change detection circuit 11.
No. DEL connects the delay circuit 20 and the OR gate 25.
The reset signal is reset each time the signal is supplied to the reset terminal R via the
and at the same time this reset is done.
The clock signal supplied from the clock generation circuit 26
Start counting Luz CLK. And then the next
The output of the counter 24 immediately before the reset is performed.
is read into the corresponding TM23-1 to 23-n.
Ru. This allows terminal T₃₁key code supplied to
The duration of the same key code is measured each time the key code changes.
The measurement results (output of the counter 24) are
It is stored in TM23-1 to TM23-n. In addition, this
The counter 24 is supplied via the OR gate 25.
It is also reset by the reset signal Re. The delay circuit 20 receives the detection signal DEL for a predetermined period of time.
(for example, several μsec) and outputs the signal.
Ru. The purpose of inserting this circuit is to detect the detection signal DEL.
is the reset terminal R of the counter 24 and the ring counter
Terminal T of data circuit 12_5aare supplied at the same time, the
The output of the counter 24 is the predetermined TM23-1 to 23-
The counter 24 is reset before being read into n.
This is to eliminate the inconvenience caused by Further explanation
For example, after starting automatic canon play, the first
terminal T₃₁the note corresponding to the keycode supplied to
In this example, the note length data of TM2
3-1. and,
This means that terminal T₃₁A second key code is supplied to
The detection signal DEL is generated, and the ring counter is rotated.
Terminal T of path 12₅₂becomes a “1” signal, which causes
The output of counter 24 is read into TM23-1.
counter 24 must be reset after
No. Therefore, the detection signal DEL is delayed slightly.
After the delay, supply to the reset terminal R of the counter 24.
It is necessary to do so. The counter 27 causes the tempo indicator 28 to blink.
It is supplied from the clock generation circuit 26.
Divide the frequency of the clock pulse CLK that is generated to generate one beat of the song.
After making a signal with a period corresponding to the length of
through the resistor 29 to the tempo indicator 28 (LED)
supply to T-type flip-flop (hereinafter abbreviated as TFF)
) 30, this electronic organ plays automatic canon.
Canon indicator 31 (LED) indicating the status
lights up and generates a reset signal Re.
It's meant to be released. In other words, this TFF3
0 trigger input terminal T is provided on the operation unit 6.
Canon ON/OFF switch 6a (momentary)
type) is supplied. Also this TFF3
The signal obtained at the Q output terminal of 0 is transmitted through the resistor 32.
is supplied to the canon display 31 and obtained at the output end.
The signal is output as a reset signal Re. stop
So, when this TFF30 is in the reset state,
The signal obtained at the Q output terminal is a “0” signal, and
However, the canon display 31 does not light up.
However, a “1” signal is obtained at the output terminal, and this
The “1” signal is output to each part of the circuit as the reset signal Re.
Powered. In this state, canon ON/OFF
Once you operate switch 6a, the TFF30
One pulse is supplied to the trigger input terminal T, and this causes
TFF 30 enters the set state. As a result, Q output
The signal at the power end becomes a “1” signal and the canon display 31
lights up, while the signal at the output end becomes a “0” signal.
As a result, the reset signal Re is no longer output. Ma
Then, operate canon ON/OFF switch 6a again.
When the TFF30 is reset, the Kano
While the reset signal 31 turns off, the reset signal Re
is output again. In this way, this TFF30
Every time you operate Canon ON/OFF switch 6a
It is designed to be set/reset repeatedly.
In addition, the canon ON/OFF switch 6a is normally normal.
Toswitch etc. are used. Operation section 6 selects automatic canon performance and canon type.
selection, delay time setting, note length setting, pitch difference
It is used to configure the settings, etc. of the canon
In addition to the ON/OFF switch 6a, the delay time setting section 6
b, canon type selection section 6c, note length setting section 6d and
and a pitch difference setting section 6e. When you are late
The interval setting unit 6b determines when the follow-up phrase is delayed with respect to the preceding phrase.
This is to set the interval between measure A and beat B (first
(see table)).
key) and a memory circuit that memorizes the output of this setting device.
and this delay time setting section 6b.
The output of is supplied to the delay time measuring circuit 13. mosquito
The non-type selection section 6c selects the types shown in Table 1 above.
This is for selecting the type of
This canon type selection section 6c
The output is from the delay time measurement circuit 13 and the programmable
ring counter 22, arithmetic circuit 15 and sound
The signal length is supplied to the note length setting section 6d. Note length setting section 6d
is the sound in the case of expanding and decreasing canons.
This is for setting the note length. In other words,
In the case of a major canon, the note length of the additional clause is the note length of the preceding clause.
Set how many times the length is to be used, and also set the
In this case, set the note length of the additional phrase to a fraction of the note length of the preceding phrase.
This is for setting whether to this note
The length setting section 6a is a note length multiplier setting device (for example, a tenth note length setting device).
key) and a memory circuit that memorizes the output of this setting device.
The output is a note length measuring circuit 14.
supplied to Moreover, this note length setting section 6d is
Expanded canon, decreased in canon type selection section 6c
Direct canon, retrograde canon, retrograde canon other than canon
When one of the options is specified, the corresponding
output the data to the note length measurement circuit 14.
It's summery. The pitch difference setting unit 6e sets the pitch difference for the preceding phrase.
The difference in pitch between the following phrases is expressed as the degree (c degree difference; see Table 1).
It is specified by a power setting device (e.g.
(for example, numeric keypad) and the output of this setting device.
It consists of a memory circuit, whose output is an arithmetic circuit.
15. The delay time measuring circuit 13 is connected to the delay time setting section 6b.
Click on the specified delay time (measure A, beat B).
Clock pulse output from lock generation circuit 26
It can be measured by counting the SCLK.
Therefore, details are shown in FIG. In Figure 6
and terminal T₆₁,T₆₂are each delay time setting section 6b
Measure data “A” and beat data “B” are supplied from
These terminals T₆₁,T₆₂supplied to
Both data is stored in ROM (read-only memory)
13a. This ROM13a is the small
Clock pulse the node data “A” and beat data “B”
Comparison circuit 1
3b. Explain with examples
For example, the delay time setting unit 6b may be used to set a one-measure delay.
Suppose that these are specified (“A” = “1”, “B” =
"0"). In this case, if the length of one measure is
If this corresponds to 32 pulses of pulse CLK,
Then, ROM13a compares the data “32”.
output to the A input end of path 13b. counter 13c
is terminal T₆₃The clock pulse CLK supplied to
The count output is a comparator circuit.
It is supplied to the B input terminal of 13b. Comparison circuit 13b
is the output of ROM 13a and the counter 13c.
Compare the count outputs and generate a match signal when both match.
It outputs EQ (“1” signal). and,
Match signal EQ output from this comparison circuit 13b
is one input terminal of AND gate 13d, or gate
One input terminal of FF13e and the set of FF13f
is supplied to the input terminal S. Also, terminal T₆₄for
Reset signal Re is supplied and terminal T₆₅For FF1
3f Q output signal is supplied and terminal T₆₆Anne
The output of the gate 13d is supplied, and the terminal T₆₇
There is a retrograde option provided in the canon type selection section 6c.
The output of canon selection switch 6k is not supplied.
Ru. However, terminal T₆₄Reset supplied to
When the signal Re becomes a “0” signal (automatic canon performance
), the counter 13c starts the clock pulse.
Start counting Luz CLK. At this time, for example
"1 bar" is specified as the delay time, and ROM1
"32" was output as the output data of 3a.
Then, the output of counter 13c becomes "32".
(When the time equivalent to one measure has elapsed)
A match signal EQ is output from the comparison circuit 13b at
This signal EQ is supplied to the set input terminal S of FF13f.
The counter is supplied through the or gate 13e.
It is supplied to the reset terminal R of the terminal 13c. to this
Therefore, FF13f is set and its Q output signal
becomes a “1” signal, while the counter 13c is reset.
be tested. Counter 13c is reset
and the coincidence signal EQ output from the comparison circuit 13b.
returns to the “0” signal again, and the counter 13c again returns to “0” signal.
Start counting clock pulse CLK. As can be seen from the above operation, the comparison circuit 13b
The match signal EQ output from has a short pulse width.
It becomes a pulse signal, and this coincidence signal EQ is
It is output repeatedly over a period of time. Also, FF13f is
The first match signal EQ is output from the comparison circuit 13b.
, that is, by the delay time setting section 6b.
It will be set when the set delay time has elapsed.
After that, the reset signal Re (“1” signal) is output.
The set state continues until the Also, and games
The point 13d is the coincidence signal output from the comparator circuit 13b.
If the No. EQ is retrograde canon (switch 6k is on)
) only as a load pulse LOP
terminal T₆₆supply to In other words, the field of retrograde canon
If so, use terminal T₆₆, with a period equal to the “delay time”.
A code pulse LOP is output. Returning to FIG. 3 again, the note length measuring circuit 14 is
Preceding phrases stored in TM23-1 to 23-n
Find the note length of the additional phrase based on the note length data.
This is a circuit that allows This note length measuring circuit 14
As shown in Fig. 7, the frequency conversion circuit 14a and the counter
MM 14b, comparison circuit 14c, and MM 14d.
, or gate 14e, and and gate 14f.
It consists of Frequency converter 14a is connected to terminal T₇₁
The clock pulse CLK supplied to terminal T₇₂Served with
Conversion based on the supplied output of the note length setting section 6d
It is something to do. That is, this frequency converter 1
4a is set to "1/2" in the note length setting section 6d, for example.
When "multiple" is specified, the frequency of the clock pulse CLK is
Output the period by 1/2, or for example "2x"
When is specified, the period of clock pulse CLK is
Double the output. The counter 14b
It counts the output of converter 14a.
The count output is supplied to the A input terminal of the comparator circuit 14c.
It will be done. Further, this counter 14b is connected to the comparator circuit 14.
The output of the AND gate 14f provided on the output side of c.
reset by force or output of MM14d.
Ru. In this case, MM14d is supplied to its input end.
Outputs a pulse signal at the rising edge of the signal
FF as shown in Figure 6 is connected to the same input terminal.
Q output signal of 13f is terminal T₆₆and terminal₇₃via
are supplied. Therefore, MM14d
FF13f (Figure 6) outputs the pulse signal.
The point in time at which the
The time has passed. The comparison circuit 14c is connected to the terminal T.₇₄supplied to
Outputs of TM23-1 to 23-n and counter 14b
This is to compare the count output of
At the point when the match signal EQ (“1” signal) is
output to one input end of port 14f. Andoge
The output 14f receives the match signal EQ of the comparison circuit 14c.
For opening/closing, terminal T₇₃supplied to
When the signal is “1” (FF13f in Figure 6 is set)
), the above match signal EQ is shifted to
Terminal T as Ruth SHP₇₅In addition to supplying
Resetting counter 14b via gate 14e
Supplied to terminal R. The note length measuring circuit 14 configured in this way has
For example, terminal T₇₂Data specifying “1x” for
Suppose that data is supplied. In this state, the end
Child T₇₃When the signal rises to “1” signal, first MM
The counter 14b is reset by the output of 14d.
The counter 14b then receives the frequency converter 1.
Start counting the output signal of 4a. In addition, this
In this case, the period of the output signal of the frequency converter 14a is
Equal to the period of clock pulse CLK. and,
The count output of counter 14b is at terminal T₇₄supplied to
If it matches the note length data, that is,
T, terminal T₇₄for the note length data supplied to
When the corresponding time has elapsed, the output from the comparator circuit 14c is
The input match signal EQ becomes a “1” signal, and this
“1” signal is shifted through AND gate 14f
Terminal T as pulse SHP₇₅In addition to being supplied to
It is supplied to the reset terminal R of the counter 14b.
As a result, the counter 14b is reset and reset.
At this time, terminal T₇₄The following note length data is
Supplied. (Please note that the following note length data is supplied.
The process will be detailed later. ) counter 14b resets
When set, the match signal EQ of the comparator circuit 14c is
The signal returns to "0", and the counter 14b returns to the frequency
Start counting the output signal of the converter 14a.
And terminal T₇₄The next note length data supplied to
The comparison is repeated again when the time corresponding to the data has elapsed.
The coincidence signal EQ on path 14c becomes a "1" signal. In this way, the note length measuring circuit 14 operates at the terminal T.₇₄to
Measure the time corresponding to the supplied note length data
Then, when that time has elapsed, terminal T₇₅Karashi
This is a circuit that outputs the soft pulse SHP. this place
For example, terminal T₇₂Data that specifies "1/2"
frequency converter 14
The period of the output signal of a is the period of the clock pulse CLK.
Since it is 1/2 of the period, the terminal T₇₄supplied to
1/2 of the time corresponding to the note length data has passed
At that point, the shift pulse SHP is output.
Also, for example, terminal T₇₂Data specifying “2x” for
terminal T is supplied.₇₄supplied to
It takes twice as long as the time corresponding to the note length data
A shift pulse SHP is output when the time elapses.
Furthermore, as understood from the operation explanation above,
The shift pulse SHP is a short pulse signal.
Ru. In Figure 3, the programmable ring cowl
The counter 22 is an n-bit ring counter,
Note lengths stored in TM23-1 to 23-n
data and stored in KM17-1 to 17-n.
The note length measurement circuit reads out the key codes sequentially.
14 and for supplying to the arithmetic circuit 15, respectively.
It is. This programmable ring counter
22 is preset input terminal P₁~P_o, output terminal Q₁
~Q_oShift terminal SH, load terminal L, shift direction
It has a designated terminal D and a reset terminal R.
Ru. Also, preset terminal P₁~P_oThere is a ring card
Terminal T of counter circuit 12₅₁~T_5osignal obtained in
are supplied respectively, and the output terminal Q₁~Q_othe faith gained in
The numbers are for each lead energy of KM17-1 to 17-n.
cable terminal RE and TM23-1 to 23-n.
Supplied to each read enable terminal RE and shifted
The shift pulse SHP is supplied to the terminal SH,
The load pulse LOP is supplied to the load terminal L.
The shift direction specification terminal D is used to select the canon type.
The output of the retrograde canon selection switch 6k is output from the section 6c.
A reset signal is supplied to the reset terminal R.
No. Re will be supplied. Then, connect it to the load terminal L.
When the code pulse LOP is supplied, the preset input is
Force end P₁~P_oRing counter times supplied to
Terminal T of path 12₅₁~T_5oRead each signal of
output terminal Q₁~Q_oOutput from and reset
Reset signal Re (“1” signal) is supplied to the reset terminal R.
, its output terminal Q₁Only “1” signal
state. Also, a shift pulse is connected to the shift terminal SH.
When SHP is supplied, output terminal Q₁~Q_oNoizu
The “1” signal obtained in this way is shifted, but this
This is the signal supplied to the shift direction designation terminal D.
The shift direction depends on whether the “1” signal is the “0” signal.
are different. That is, the canon type selection section 6c
When a canon other than the retrograde canon is selected
In this case, a “0” signal is supplied to the shift direction designation terminal D.
This causes the output terminal Q₁~Q_oto either
The resulting “1” signal is applied by the shift pulse SHP.
Every time...Q₁→Q₂→……Q_o→Q₁→ of...
It is shifted in a circular manner. On the other hand, canon species
When a retrograde canon is selected by the class selection section 6c
In this case, a “1” signal is supplied to the shift direction designation terminal D.
This causes the output terminal Q₁~Q_oto either
The resulting “1” signal is applied by the shift pulse SHP.
Every time...Q_o→Q_o-1→……→Q₂→Q₁→Q_o
→... are shifted in a circular manner. The arithmetic circuit 15 includes KM17-1 to 17-n.
to the supplied key code (the key code of the preceding phrase)
By performing various operations, the key code of the additional phrase can be determined.
This circuit creates and outputs the code, and is shown in Figure 8.
It is configured as follows. In other words, this arithmetic circuit
15 can be roughly divided into key code calculation circuit 15a.
and a diatonic scale conversion circuit 15b. Key
The code calculation circuit 15a is connected to terminal T.₈₁key supplied to
- Perform various operations on the chord to find the key code of the additional phrase.
This is a circuit that outputs to the diatonic scale converting circuit 15b as a
be. (In this case, the key code for the add-on phrase is
The signal is output from the data register 40 to the diatonic scale converting circuit 15b. )
Further, the diatonic scale conversion circuit 15b converts the key code
Of the key codes supplied from the arithmetic circuit 15a,
Keycodes corresponding to chromatic tones are equivalent to diatonic tones.
Convert the key code to terminal T₈₂output from
It is a circuit. Here, the diatonic tone is “do-re-mi-fa”.
It is a sound that corresponds to one of the
Also, chromatic notes are, for example, C#. sound, sob sound
It is a note that is a semitone off from the diatonic scale. Na
The details of this arithmetic circuit 15 will be described later. AND provided on the output side of the arithmetic circuit 15
The gate 35 (FIG. 3) is the output of the arithmetic circuit 15.
(Key code for addiku) This is for opening/closing.
be. That is, the other input of the AND gate 35
At the end is the terminal T of the delay time measurement circuit 13.₆₅got to
signal (Q output signal of FF13f in Fig. 6)
No.) is supplied. Therefore, the "delay time"
has passed and the Q output signal of FF13f becomes a “1” signal.
The AND gate 35 is turned on at the time of startup.
, the terminal T of the arithmetic circuit 15₈₂of the additional phrase obtained in
The key code is connected to the terminal via the same AND gate 35.
T₃₂is output from. And terminal T₃₂output from
The key code for the added clause is the
It is supplied to TG7 shown in Figure 2, where it is converted into a musical tone signal.
converted and emitted as musical tones from sound system 8.
be heard. The above is the configuration of the automatic cannon device 5 shown in FIG.
It is. Next, the performer uses the operation section 6 to select the first table.
If you specify each of the various canons shown in
How the canon device 5 operates will be explained. Na
In the following explanation, the musical score shown in Figure 1 will be used.
We will explain this using an example of automatically performing a non-performance.
Ru. (1) Direct canon The performer first selects the canon type selection section 6c (Fig. 3).
In addition to selecting "direct canon" by
The time setting section 6b sets the delay time of "1 bar".
and also set the pitch difference by the pitch difference setting section 6e.
Specify "8 degrees above". Next, Kanon ON/
By operating the OFF switch 6a, TFF
When 30 is set, the reset signal Re is
It becomes a “0” signal, and each part of the circuit can perform automatic canon play.
At the same time, the delay time measuring circuit 13 becomes active.
Counter 13c (Figure 6) indicates the delay time (1 bar)
Start measuring. Also, at this time, the ring counter
Circuit 12 is terminal T₅₁is the “1” signal,
Therefore, the write enable terminal of KM17-1
A “1” signal is supplied to WE. Performer operates canon ON/OFF switch 6a
At the same time, the first note in Figure 1 A
AN₁When you press the key corresponding to the first note of the same
AN₁The key code is from keyboard circuit 2 (Figure 2)
Output and terminal of TG4 and automatic cannon device 5
T₃₁are supplied to each. This allows you to
Note AN from do system 8₁A musical tone corresponding to
While the automatic cannon device 5 hears the following:
Processing is done. That is, terminal T₃₁(Fig. 3) Musical note AN₁against
The key code changes when the corresponding key code is supplied.
The detection circuit 11 detects this and outputs the detection signal DEL.
to the ring counter circuit 12 and delay circuit 20
Output. Output to ring counter circuit 12
As mentioned above, the detection signal DEL is as shown in Fig. 5.
By the action of the delay circuit 12d, the AND gate 12
c and therefore the ring counter
Output terminal T of circuit 12₅₁continues to send a “1” signal, and this
The result of terminal T₃₁The key code supplied to is KM1
7-1. On the other hand, the delay circuit 20 detects
When the signal DEL is supplied, the delay circuit 20 detects
The output signal DEL is delayed for a short time (several μsec).
output after The output of this delay circuit 20 is
Reset terminal R of counter 24 via port 25
This resets the counter 24.
be done. The counter 24 is reset as described above.
At the same time, start counting the clock pulse CLK.
i.e. the first note AN₁Measuring the note length of
and this count is then detected by the signal
Until DEL is output (terminal T₃₁The key code of
can continue (until something changes). 1st note AN₁The time corresponding to the note length of
, the performer plays the first note AN₁corresponds to
As soon as you release the key, the second note AN₂key corresponding to
Press . As a result, keyboard circuit 2 (Fig. 2)
from note AN₂The key code will be output and the sound will start.
note AN in do system 8₂Musical tone corresponding to
is pronounced, while the automatic canon device 5 pronounces the next
processing is performed. terminal T₃₁(Figure 3) shows the second note AN₂corresponds to
When a key code is supplied, key code change detection is performed.
The detection signal DEL is output again from the output circuit 11,
Terminal T of ring counter circuit 12_5aand delay times
20. of ring counter circuit 12
terminal T_5aThe detection signal DEL supplied to
Then, the output of the delay circuit 12d shown in FIG. 5 becomes a “1” signal.
Andgate 12c because it is a number.
to the clock terminal CK of the ring counter 12a.
is supplied to the ring counter 12a.
output terminal Q₂becomes a “1” signal, and the terminal T₅₂but
It becomes a “1” signal. This terminal T₅₂The “1” signal of
KM17-2 write enable terminal WE and
Connect it to the write enable terminal WE of TM23-1.
As a result, the terminal T₃₁supplied to
Second note AN₂The key code corresponding to is KM
17-2, while the output of the counter 24
(1st note AN₂Note length data corresponding to the note length of
data) is read into TM23-1. There will be a slight delay after the above processing is done.
A pulse signal (delays the detection signal DEL) from the delay circuit 20
When the pulse signal) is output, this pulse signal
The counter 24 is reset by
Counter 24 is the second note AN₂Measuring the note length of
Start. In the same way, the performer can₃~AN₆(No.
If you press the keys corresponding to Figure 1) in sequence, this
ra note AN₃~AN₆The musical tone corresponding to
It is pronounced from stem 8, and the note AN₃~
AN₆The key codes corresponding to each are KM17-3 ~
17-6, saw note AN₃~AN₆Each note length de
The data are stored in TM23-3 to TM23-6 respectively.
Ru. In this way, the time corresponding to one measure passes.
and terminal T of the delay time measurement circuit 13.₆₅is “1” belief
(See Figure 6). And the following direct link
Why does the automatic performance of the add-on phrase in the non begin?
However, in this case, the performer's performance after the second measure is
Musical sound information from the performance, i.e., the key key of the preceding phrase.
The chord and note length data are sequentially as described above.
Similarly, {KM17-7, TM23-7}, {KM1
7-8, TM23-8}, ... will be memorized,
Also, the information stored in {KM17-n, TM23-n}
After that, again {KM17-1, TM23-1},
Stored in memory by cycling through {KM17-2, TM23-2}
It will be done. Now, the terminal T of the delay time measurement circuit 13₆₅but
When the “1” signal rises, the programmer
The bull ring counter 22 has its output terminal Q₁but
It is a “1” signal. (The reset signal Re is
After the signal becomes “0”, shift pulse SHP is supplied.
Because it's not. ) Therefore, KM17-1's
Read enable terminal RE and TM23-1
A “1” signal is provided to each read enable terminal RE.
output of KM17-1 (i.e., the first
musical note AN₁key code) is the terminal of the arithmetic circuit 15
T₈₁, the output of TM23-1 (i.e., the first
musical note AN₁note length data) is note length measurement circuit 1
4 terminal T₇₄are supplied to each. In addition, lyceum
At the point when the output signal Re becomes a “0” signal,
The output of KM17-1 and the output of TM23-1 are
are supplied to the arithmetic circuit 15 and note length measurement circuit 14, respectively.
However, the terminal T of the delay time measurement circuit 13₆₅but
When the signal does not become “1”, the AND gate 35 (the
3) and the AND gate of the note length measurement circuit 14
14f (Fig. 7) were both in the off state, but
Do not have any influence on the musical sound generation system of the tsute-additional phrase.
There isn't. Terminal T of arithmetic circuit 15₈₁the first sound supplied to
sign AN₁The key code is the same terminal T₈₁Add times through
41 (see FIG. 8).
On the other hand, the terminal T of the arithmetic circuit 15₈₃has a pitch difference setting section.
6e output is supplied, and the output is also connected to terminal T.₈₃
Supplied to the address input terminal ADD of ROM42 via
be done. Then, the output data of the ROM 42 and the first
note AN₁key code is sent to the adder circuit 41.
and the addition result is the key code of the appendix clause.
is supplied to the B input terminal of the selector 40 as a code.
The operation during this time will be explained in detail below with an example.
Explain. First, the scale is only one octave as shown in Figure 9 A.
and for each note in this one octave.
Each key coat is assigned as shown in Figure 9B.
It is assumed that the In addition, in Figure 9
indicates data in decimal notation. By the way, pitch difference setting
In part 6e, the performer is “a third above” or
It is now specified by degrees, such as "5 degrees below".
It's on. And in the case of "above 3rd degree", for example,
If the preceding phrase has a C note, the follow-on phrase has an E note.
It is necessary that (see Figure 9 C), and
In the case of “5th below”, for example, the musical tone of the preceding phrase is A note.
In the case of
Yes (see Figure 9 D). Therefore, the key of the
- When determining the chord, use the pitch difference setting section 6e.
For example, when "3rd above" is specified, the preceding
It is necessary to add “+4” to the key code of the phrase.
, and when "5 degrees below" is specified,
Adding “-7” to the key code of the preceding phrase
is necessary. In this way, the pitch difference setting section 6e
The frequency set for each phrase and the key code of the preceding phrase are added.
The value will be different from the value that should be calculated. There
The ROM 42 is provided in the ROM 42. Sunawa
This ROM 42 is supplied from the pitch difference setting section 6e.
Data specifying the “frequency” and “upper/lower”
address, and the key code corresponding to the same address.
code conversion data (“+4”, “-” in the above example)
7'') is output to one input terminal of the AND gate 43.
It is something to do. AND gate 43 opens/closes the output of ROM42
One of the input terminals is connected to the terminal T.₈₁to
An operator that ORs all bits of the supplied key code.
Agate 44 output is supplied. This conclusion
As a result, the AND gate 43 is connected to the key supplied to the terminal T.
Only activated when all chords are “0” (for rests)
shuts off the output data of ROM42 and goes to sleep.
If it is not a sign, it will be on and the output data of ROM42 will be turned on.
The data is supplied to the B input terminal of the adder circuit 41. Na
Oh, the meaning of inserting this AND gate 43 is
In the case of a sign, the output data of the ROM 42 is sent to the adder circuit 4.
1, the output of the adder circuit 41 is
The output data of ROM42 is output from the output terminal of the force.
even though the preceding phrase is a rest.
The output of the ROM42 is generated as the musical tone of the additional phrase.
This is because it will be lost. Therefore, the adder circuit 41 is connected to the terminal T.₈₁Sourced from
The output data of ROM42 is set to the key code of the preceding phrase.
data (key code conversion data) is added, and the additional phrase is added.
Supplied as a key code to the B input terminal of the selector 40
do. The selector 40 has a terminal T connected to its control terminal C.₈₄of
The reversal power of the canon type selection unit 6c supplied through
Controlled by the output of the non-selection switch 6m
Ru. Then, this selector 40 selects a reversal canon.
When the selection switch 6m is in the “on” state (control terminal C
When a “1” signal is supplied to ) is supplied to the A input terminal.
Select the data that is displayed and output it from the output terminal.
output, and the reverse cannon selection switch 6m is set to “Off”.
OFF” state (“0” signal is supplied to control terminal C)
), the data supplied to the B input terminal
Select the data and output from its output terminal. this
In the example, the canon type selection section 6c
Since "direct canon" is selected, reversal canon is selected.
The on selection switch 6m is in the “off” state and
Therefore, the selector 40 outputs the output of the adder circuit 41.
Output as the key code of the addendum phrase, making it diatonic.
It is supplied to circuit 15b. The diatonic scale conversion circuit 15b outputs from the selector 40
Corresponds to chromatic tones among the key codes of the addendum phrases
The key code corresponding to the diatonic scale note
Convert to terminal T₈₂This is the output from the following
The diatonic scale converting circuit 15b will now be described in detail. In general, if the musical tone of the preceding phrase is a diatonic tone, the follow-up phrase
It is desirable that the musical tones of the phrases also be diatonic tones. deer
However, as mentioned above, the key code of the additional clause is
The formation is performed by performing operations on the key code of the preceding phrase.
When done side by side, it corresponds to the key code of the preceding clause.
Even though the musical tones are diatonic, the addition of
When the musical tone corresponding to the key code is a chromatic tone
will occur. For example, if you change the musical tone of the additional phrase to the preceding phrase,
If you want to make it a third higher than the musical tone of
Add “+4” to the C note key code “10”
Then, the key code for E note becomes “14”, which is a whole tone.
It is a scale tone (in the case of C major), but the key chord of D note is
If you add “+4” to “12”, “12” + “4” =
It becomes “16” and becomes the key code for the F# sound.
(See Figure 9, E). This is a song in the key of C major.
If you perform the direct canon “3rd above”, the preceding phrase
When is a “re” sound, the follow-up phrase is “hua#” ” note (chromatic scale
(sound). In this way, even though the musical tone of the preceding phrase is a diatonic tone,
However, if a chromatic scale tone occurs in the musical tone of the additional phrase,
If so, it is necessary to convert the chromatic tones to diatonic tones.
The key point. And in this case you can convert as follows
is desirable for the melody of the song. That is, (b) The musical tone of the preceding phrase is two degrees lower in diatonic scale.
If it forms a major second with the musical tone of
Lower the sound. (b) The musical tone of the preceding phrase is two degrees lower in diatonic scale.
When forming a minor second with the musical tone of
Raise the sound. For example, the C major scale note shown in Figure 10A should be played first.
It is a line phrase, and it is directly “twice up” to the musical note of this preceding phrase.
Additional phrase when the line canon is performed with a delay of one measure
When the musical tone of is calculated, it is shown in Figure 10B.
It becomes like this. In addition, the preceding phrase shown in Figure 10A
The direct canon “a fourth above” the musical note is “one measure late”.
The musical tone of the follow-up phrase when performed with "Re" is shown in Figure 10 C.
It comes to show. In the case of Figure 10 B, first
Additive phrases corresponding to the musical tones “mi” and “shi” in line phrases
The musical tones of ” (code COa) and “Do
# ” (code COb) (chromatic tone), and the first
In the case of figure 0 C, it corresponds to the musical tone “hua” in the preceding phrase.
The musical tone of the follow-up phrase is “La#” ” (code COc) (chromatic tone)
becomes. In this case, the musical tone “Full” in Figure 10B
a# ”, the musical tone (“mi”) of the preceding phrase is diatonic.
Look, it forms a major 2nd with the musical note 2 degrees below it (“re”).
It is desirable to lower the pitch by a semitone and make it sound like "hua".
Similarly, the musical tone “C # ” is also lowered by a semitone.
It is desirable that the musical tone be "C". On the other hand, the musical tone “A # ” is the first
The musical tone (“hua”) of the line phrase is diatonic, Part 2
It forms a minor second with the lower musical note (mi), so it is a semitone higher.
It is desirable to use the musical tone of ``ge'' and ``shi''. This kind of conversion principle of “chromatic tone → diatonic tone”
Considering each sound of "Dore Mi Huasorashi"
Looking at it, we get the following conclusion: That is, (a) The musical tone of the preceding phrase is “hua” or “do.”
, a chromatic scale tone appeared in the musical tone of the corresponding addendum.
Case: Raise the tone of the additional phrase by a semitone. (b) The musical tone of the preceding phrase is other than “hua” or “do”
When , a chromatic tone is generated in the musical tone of the corresponding preceding phrase.
→ Lower the tone of the additional phrase by a semitone. However, it is possible to implement this conversion principle into a circuit.
This is the diatonic scale converting circuit 15b shown in FIG.
Ru. The diatonic scale converting circuit 15b will be explained below.
do. In FIG. 8, ROM 50, comparison circuit 5
1a to 51e and the OR gate 52 are selectors
The key code of the additional phrase obtained as the output of 40 is
Detect whether the corresponding musical tone is a chromatic tone or not
This is a chromatic tone detection circuit 53. Here, the tone of the song is
(C major, F minor, etc.)
When we investigate this, we find that, for example, the C length shown in Figure 11
This can be seen by looking at the example of G major shown in Figure 11 B.
As in, in any key, ”, “Re# ”,
“Hua # ”, “So # ","La# ” each note is a chromatic tone
(In the diagram, the △ marks are chromatic tones.
Ru. ). The chromatic tone detection circuit 53 is as follows.
It is constructed based on the characteristics of chromatic tones. In other words, the player enters the key designation section 54 (FIG. 8).
Therefore, when you specify the key of a piece of music, the
The corresponding key data is sent to the address input terminal of ROM50.
Supplied to ADD. ROM50 has all tunings pre-programmed.
``Do # ”, “Re# ”, “Hua # ”, “So # ","La# ”
The one that stores the key code corresponding to each
Then, input the key data to the address input terminal ADD.
is supplied, the “do#” of that key is played. ”, “Re# ","centre
a# ”, “So # ","La# The key code corresponding to each
output terminal Q₁~Q_FiveOutput each from and compare
are supplied to the A input terminals of circuits 51a to 51e, respectively.
Ru. On the other hand, the output of the selector 40 (the key code for the additional phrase)
) is the bottom of the B input terminal of the comparator circuits 51a to 51e.
Each will be supplied. Comparison circuits 51a to 51e yes
Each key code supplied to both input terminals is
The key codes of both input terminals are compared.
If they match, a “1” signal is output, and if they do not match, it outputs a “1” signal.
If it is, a “0” signal is output. Also, these comparison times
Each output of paths 51a to 51e is connected to an OR gate 52.
supplied to Therefore, output from selector 40
If the key code of the addendum phrase to be played is a chromatic tone,
If the output of any one of the comparison circuits 51a to 51e is
Since the signal is “1”, the output of the OR gate 52 is
The force becomes a “1” signal, and also from the selector 40
The key code of the output additional phrase is not a chromatic tone.
If the outputs of the comparison circuits 51a to 51e are
Since the signal also becomes “0”, the OR gate 52
The output becomes a “0” signal. On the other hand, in the diatonic scale conversion circuit 15b shown in FIG.
ROM 55, comparator circuits 56a, 56b and
and the or gate 57 is connected to the terminal T.₈₁antecedent phrase obtained in
The musical note corresponding to the key code is “C” or
“Do” and “Hua” to detect whether it is “Hua” or not
A detection circuit 58 is configured. This “do” and “hua” inspection
In the output circuit 58, the ROM 55 has all the tuning
Write down the key codes corresponding to "do" and "hua" respectively.
The address input terminal ADD
The key data is supplied from the key specifying section 54.
and the keys that correspond to the "do" and "hua" of that key.
Output code to terminal Q₁,Q₂Output from and comparison circuit
56a and 56b, respectively.
On the other hand, the B input terminals of comparison circuits 56a and 56b
is terminal T₈₁The key code of the preceding phrase obtained in
Each will be supplied. Comparison circuits 56a, 56b yes
The key code supplied to both input terminals
The key codes of both input terminals are compared.
If it matches, output a “1” signal from the output terminal and
If it does not match, a “0” signal is output. Also, this
The respective outputs of these comparison circuits 56a and 56b are OR.
The signal is supplied to the gate 57. “Do” and “F” detection circuit configured like this
At 58, terminal T₈₁The key of the preceding phrase supplied to
- The musical tone corresponding to the chord is sent to the key specifying section 54.
“C” or “F” in the key specified by
A, the comparison circuit 56a or 56b
One of the outputs becomes a “1” signal, and then
Then, the OR gate 57 outputs a "1" signal.
On the other hand, the musical tone corresponding to the key code of the preceding phrase is
If it is other than "do" or "hua", the comparison circuit 5
Both outputs of 6a and 56b are “0” signals.
Therefore, the output of the OR gate 57 is
It becomes a “0” signal. As described above, the output of the chromatic tone detection circuit 53
In other words, the output of the OR gate 52 is a “1” signal.
corresponds to the key code of the additional phrase depending on whether the signal is “0” or not.
Is the corresponding musical tone a diatonic tone that is a chromatic tone?
can be distinguished, and the output of the “do”/“fa” detection circuit 58
Is the output of the OR gate 57 a “1” signal?
Corresponds to the key code of the preceding phrase depending on the “0” signal
Whether the musical note to be played is “do” or “hua”
Can be distinguished. Based on these discrimination results,
Then, the chromatic tone of the addendum becomes diatonic tone as follows.
is converted to That is, first, the additional output from the selector 40 is
The key code of the line phrase corresponds to the diatonic tone.
In the case of “0” signal, the output of the OR gate 52 is “0” signal.
Therefore, the output of the AND gate 59 also becomes
It becomes a “0” signal. As a result, and gate 60
and the first input terminal of the AND gate 61.
A “0” signal is supplied along with the input terminal, and these amplifiers
Both gates 60 and 61 are turned off.
On the other hand, the first input terminal of the AND gate 62 has an input
A “1” signal is supplied via the converter 63, and the
The second gate 62 is turned on. This results in
The output of selector 40 (key code of appendix phrase) is
The end gate 62 and the or gate 64
Child T₈₂(in this case, the key of the appendix
-codes are not converted. ) Also, the key of the additional phrase output from the selector 40 is
- The chord is a chromatic note, and the key of this addendum is
The key code of the preceding phrase that corresponds to the key code (i.e.
T, terminal T₈₁key code obtained) is “do”.
Or gate 52 if it corresponds to "hua"
Both outputs of 57 and 57 become “1” signals, and
Consequently, the output of the AND gate 59 also becomes a “1” signal.
Become. As a result, the first input of the AND gate 60
The “1” signal at the end is the second input of the AND gate 61.
A “0” signal is sent to the power end via the inverter 65.
An inverter is connected to the first input terminal of the AND gate 62.
63, a “0” signal is supplied to each
Only gate 60 is turned on. This results in
Key code of additional phrase output from selector 40
is incremented by “+1” in the code conversion circuit 66
(i.e. after being raised a semitone), and gate 6
0 and terminal T via OR gate 64₈₂out of
Powered. Also, the key of the additional phrase output from the selector 40 is
- The chord is a chromatic note, and the key of this addendum is
The key code of the preceding phrase corresponding to the key code is “do”.
Or, if you want to support musical tones other than "hua",
While the output of the agate 52 becomes a “1” signal,
The output of Agate 57 becomes a “0” signal, but
Then the output of AND gate 59 becomes “0” signal.
Ru. As a result, the first input terminal of the AND gate 60
A “0” signal is supplied to the AND gate 62.
“0” is applied to the first input terminal of
While the signal is supplied, the
1. A “1” signal is supplied to both the second input terminals.
Ru. As a result, the additional information output from the selector 40
The key code of the line phrase is determined by the code conversion circuit 67.
After being "-1" (i.e. lowered by a semitone)
), and gate 61 and or gate 64
Through terminal T₈₂is output from. In this way, the diatonic scale conversion circuit 15 shown in FIG.
b is the key code of the additional phrase output from the selector 40
If the code is diatonic, just connect terminal T.₈₂out of
Also, in the case of chromatic tones, please refer to paragraph (a) above or
is converted to a diatonic scale based on the principle in (b) and output
do. Now, let us explain again the terminals of the delay time measuring circuit 13.
T₆₅Returning to the point when the signal rose to “1”, the calculation
Terminal T of circuit 15₈₁note AN supplied to₁(1st
The key code in figure) is first calculated by key code calculation circuit 1.
Key code conversion (pitch conversion) does not appear in 5a.
I, the key code of the addendum (sound in Figure 1 A)
Sign CO₁key code). Then the diatonic scale
It is converted into a diatonic tone in the sound conversion circuit 15b, and the end
Child T₈₂is supplied to the AND gate 35 (Fig. 3) through
be provided. Here, the terminal of the delay time measuring circuit 13
T₆₅Since the “1” signal has risen, the andgame
35 is in the on state, and therefore the arithmetic circuit
15 terminals T₈₂The key code of the appendix output from
The same AND gate 35 and terminal T₃₂through
is supplied to TG7 (Fig. 2), which generates sound.
Corresponds to the key code for addendum from system 8.
A musical sound is generated. In other words, the notes shown in Figure 1A
C.O.₁A corresponding musical tone is generated. This musical sound generation
The above key code is terminal T₈₂while being output from
I can continue. In addition, at this time, the performer's musical notes are
sound, i.e. musical note AN₇musical tones corresponding to
Of course, the sound is produced by sound system 8.
be. On the other hand, the terminal T of the delay time measuring circuit 13₆₅but
When the “1” signal rises, MM14d shown in Figure 7
A pulse signal is output from the counter 14b, and the counter 14b is reset.
is set. Next, the counter 14b calculates the frequency
Start counting the output signal of the converter 14a.
In this case, the frequency converter 14a has a terminal T.₇₂
Data specifying "1x" is supplied via
Therefore, the output signal of the frequency converter 14a
The period of is equal to the period of clock pulse CLK.
The count of the counter 14b progresses, and the counter 14b continues counting.
output from terminal T₇₄TM23-1 supplied to
output (first note AN₁note length data)
i.e. the first note AN₁note length
When the time corresponding to has elapsed, the comparison circuit 14c
The match signal EQ (“1” signal) from the AND gate 14
It is output to f. In this case, terminal T₇₃is “1” belief
Since the number is rising, AND gate 14f is turned off.
Therefore, the above coincidence signal EQ is in the counter state.
It is supplied to the reset terminal R of the counter 14b.
, terminal T as shift pulse SHP₇₅via
The logrammable ring counter 22 (Figure 3)
Supplied to shift terminal SH. Programmable
A shift pin is connected to the shift terminal SH of the ring counter 22.
Once the base SHP is supplied, the programmable
output terminal Q of counting counter 22₂is a “1” signal
(output terminal Q₁returns to “0” signal), this
“1” signal is read enable terminal of KM17-2
Lead enable end of child RE and TM23-2
The output of KM17-2 (No.
2 note AN₂key code) and TM23-2
output (second note AN₂note length data) is
Terminal T of each arithmetic circuit 15₈₁and note length measurement times
Terminal T of path 14₇₄supplied to Arithmetic circuit 15
terminal T₈₁the second note AN supplied to₂keyco
The key code of the addendum phrase is calculated in the calculation circuit 15.
converted to terminal T₈₂, and gate 35, end
Child T₃₂The signal is sequentially supplied to TG7. and,
This results in the second note AN₂of the addendum corresponding to
Musical tone, i.e. note CO₂(Fig. 1)
Musical sounds are generated from the sound system 8. In order below
Next, the above-mentioned process is repeated, and the orthogonal process shown in Figure 1A
Canon will be played automatically. (2) Rebellion canon The performer uses the canon type selection section 6c to
"Canon" is selected, and the delay time setting section 6b
Set the "delay time" and set the pitch difference setting section 6e.
After setting the pitch difference, set the canon ON/OFF switch.
When the switch 6a is operated, TFF30 is set.
Then, the reset signal Re becomes a “0” signal, and
The delay time measurement circuit 13 starts measuring the "delay time".
At the beginning, the counter 24 also receives a clock pulse.
Start counting CLK. At this time, the ring
Terminal T of counter circuit 12₅₁is a “1” signal
Therefore, the light energy of KM17-1
A “1” signal is supplied to cable terminal WE. Performer operates canon ON/OFF switch 6a
At the same time, the preceding phrase AN of the song shown in Figure 1B₁
When you start playing, in the case of the direct canon mentioned above,
Similarly, when the musical tone of the preceding phrase AN is generated,
ni musical note AN₁~AN_FiveEach key code and note length of
Data is sequentially KM17-1 to 17-5 and TM
23-1 to 23-5. Then, the delay time setting unit 13 sets
"delay time" (in this case, equivalent to one measure)
time) has elapsed, the delay time measuring circuit 13
terminal T₆₅rises to the “1” signal, and the automatic counterclockwise canon
The performance begins. In addition, the performer after the second measure
Musical sound information (key chord and note length)
data) are sequentially {KM17
-6, TM23-6}, {KM17-7, TM23
-7}...... is remembered. Terminal T of delay time measurement circuit 13₆₅is “1” signal
KM17 as in the direct canon.
-1, 17-2... output (key code of preceding phrase)
TM23-1, 23-2...
terminal T of the arithmetic circuit 15 based on the output of₈₁supplied to
be done. Then, in the arithmetic circuit 15, the additional phrase is
CO key code and terminal T₈₂output from
Ru. In this case, the difference from the direct canon mentioned above is that
This is the operation of the arithmetic circuit 15. In other words, direct girlfriend
In this case, each key code of the preceding clause AN is constant.
It was only converted under the pitch difference of
In the case of line canon, the additional clause CO keeps the preceding clause AN constant.
modeled in the opposite direction (in pitch) under the pitch difference of
The function for this is the arithmetic circuit 1.
5. Below, the operation of the arithmetic circuit 15 in the case of a retrograde canon
The time chart shown in Figures 12 and 13
This will be explained in detail with reference to . First, the operating principle will be explained. First, the
In Figure 1 B, the first note CO of the additional phrase CO₁of
The key code is the first note AN of the preceding phrase AN.₁key of
Add the output data of ROM42 (Fig. 8) to the code.
It can be found by calculating. (direct canon place)
It is the same as when ) Next, the second note of the additional phrase CO
C.O.₂is the second note AN of the preceding phrase AN₂keyco
1st note AN from C₁subtract the key code of
Change the sign (plus/minus) of this subtraction result
The first note CO of the additional phrase CO₁Add to the key code of
It can be found by calculating. Next, add-on phrase CO
The third note of CO₃The key code for the preceding clause is AN
3rd note AN₃the second note from the key chord of
AN₂Subtract the key code of and the sign of this subtraction result.
Change the number (plus/minus) and write a supplementary phrase CO.
second note CO₂is obtained by adding
Ru. In the same way, the key code for each mark in the preceding phrase AN is
Sequentially take the difference between the signs and change the sign of the additional phrase CO.
Addition phrase by adding to the key code of each note
Each key code of CO is required. And rebellious
In the case of canon, the arithmetic circuit 15 shown in FIG.
It operates on the principle of
This operation will be explained in detail below. First, in the following explanation, each
Set the key code of the musical tone to the value shown in Figure 14 B.
do. In this case, the preceding phrase of the song shown in Figure 1B
Each note of AN₁,AN₂The 14th diagram shows...
As shown in Figure C, the following verse of the same song is also added.
Each note of CO₁, CO₂The 14th diagram shows...
The result will be as shown in Figure D. Now, if the performer uses the preceding phrase AN in Figure 1 B,
1st note AN₁When you press the key corresponding to
, the ring counter circuit 12 has its output terminal
T₅₁is in the “1” signal state, and the programmer
The bull ring counter 22 has its output terminal Q₁but
The signal is “1” and the WM17-1 is written.
Enable terminal WE and read enable terminal
A “1” signal is supplied to RE. Therefore,
The first note AN above₁Key code "22" corresponding to
is read into KM7-1 (Fig. 3), and at the same time,
Output from KM17-1, end of arithmetic circuit 15
Child T₈₁is supplied to Please note that the second and third
... note AN₂,AN₃Each key code of...
"26", "22"... are sequentially KM17-2, 17-3
..., but the "delay time" has elapsed and Kano.
programmable link until playback starts.
Output Q of counter 22₁is in the state of “1” signal
Yes, therefore, the terminal T of the arithmetic circuit 15₈₁The first
1 note AN₁The key code “22” corresponding to
It is then supplied. 1st note AN of preceding phrase AN₁Keyco corresponding to
The code “22” is the terminal T of the arithmetic circuit 15 (Fig. 8).₈₁
, the same key code "22" is connected to terminal T.₈₁
via the key code change detection circuit 70 (see Fig. 3).
(same configuration as the key code change detection circuit 11 shown)
Terminal T₄₁, one input of each of the AND gates 71 and 72
Power end, B input end of subtraction circuit 73, comparison circuit 56
a, 56b and the A input of the adder circuit 41.
Each is supplied to the power end. Key code change detection
Terminal T of circuit 70₄₁The above key code “22” is provided to
When supplied, the terminals are connected as explained in FIG.
T₄₂Detection signal DEL1 (pulse signal) is output from
(Symbol P in Figure 12 A)₁), andgate
74. Here, Ann
The other input terminal of the gate 74 has a terminal T.₈₁supplied to
An or game that takes the OR of each bit of the key code
The output of port 75 is supplied. This or game
The function of terminal T75 is₈₁key code supplied to
is “0” (for the key code corresponding to a rest)
Turn off the AND gate 74 only when
It is. In this case, terminal T₈₁key supplied to
- The code is “22” (not “0”), and
Therefore, AND gate 74 is in the on state, and the same
The detection signal supplied to one input terminal of AND gate 74
The output signal DEL1 is passed through the same AND gate 74.
Trigger terminal T of TFF76 and delay circuit 77
Supplied to the input end. TFF76 connects its reset terminal R to terminal T.₈₅via
It is reset in advance by the reset signal Re supplied by
It is set. Therefore, TFF76 is as described above.
The detected signal DEL1 is passed through the AND gate 74.
is supplied to the trigger terminal T, this causes the set
The Q output terminal becomes a "1" signal. stop
Therefore, this “1” signal is applied to the AND gates 71 and 78.
each other input terminal and the other input terminal of AND gate 79.
While being supplied to the input terminal, it is also supplied via the inverter 80.
and is supplied to the other input terminal of the AND gates 72 and 81.
and furthermore, via the inverter 82
It is also supplied to the other input terminal of gate 83. this
As a result, AND gates 71, 78, and 79 are each turned on.
On the other hand, AND gates 72, 81, 8
3 are each in the off state. On the other hand, the delay circuit 77 has a detection signal at its input terminal.
DEL1 is supplied via AND gate 74
and the same detection signal DEL1 is delayed slightly (several μsec).
and outputs it as a trigger signal TRI.
The trigger signal TRI is AND gate 78 and 81
is supplied to one terminal of each. In this case,
As shown, AND gate 81 is in the off state,
AND gate 78 is in the on state, and
Therefore, the trigger signal TRI is passed through the AND gate 78.
and is supplied to the load terminal L of the register 84.
The register 84 receives a pulse signal at its load terminal L.
is supplied, the data supplied to input terminal D
It reads data and outputs it. In this case,
Since the gate 71 is in the on state, the register
The input terminal D of the input terminal 84 has a terminal T.₈₁key obtained in
Code “22” is supplied via the same AND gate 71
therefore, the trigger signal TRI is low.
When supplied to the key terminal L, the register 84
- Read the code “22” and enter the AND gate 83
(See Figure 12 D). In addition,
This register 84 is supplied to the reset terminal R.
It is reset by a reset signal Re. Furthermore, a
Register 85 has the same configuration as register 84.
And the output of the AND gate 72 is input to the input terminal D.
However, the output of the AND gate 81 is at the load terminal L.
A reset signal Re is supplied to each reset terminal R.
and its output is one of the AND gates 79.
is supplied to the input terminal of And terminal T₈₁key to
At the time the code “22” is supplied, the register
The register 85 has been reset and is therefore reset.
“0” is supplied to one input terminal of the gate 79.
(See Figure 12 E). In addition, the above-mentioned
When the trigger signal TRI is output, the AND
Gate 81 is in the off state and therefore the register
Trigger signal TRI is supplied to load terminal L of star 85.
The contents of register 85 will not change.
stomach. In this way, terminal T₈₁The key code “22” is provided.
At the time of supply (more precisely, at the time of supply)
), and gate
There is a key code on each input end of 83 and 79.
“22” and “0” are supplied respectively, and
Gate 83 is off, AND gate 79 is on
in a state. Therefore, at this point, subtraction
The A input terminal of the circuit 73 is the output of the register 85.
"0" is supplied (see FIG. 12). The subtraction circuit 73 receives the data supplied to its A input terminal.
subtract the data supplied to the B input terminal from the
The subtraction result (A-B) is applied to the first gate of the AND gate 87.
It is supplied to the input terminal, in this case, it is supplied to the a input terminal.
is “0”, and the key code “22” is supplied to the B input terminal.
Therefore, "0-22=-22" is ANDed.
The signal is output to the gate 87 (see FIG. 12-1). The above is terminal T₈₁The key code for the note AN is “22”
Key code change detection times when is supplied
circuit 70, registers 84, 85, subtraction circuit 73, etc.
It is an action. Next, the adder circuit 41 in the same case
The operation will be explained. terminal T₈₁The key code “22” supplied to
It is supplied to the A input terminal of the calculation circuit 41. on the other hand,
The address terminal ADD of ROM42 has a terminal T.₈₃via
The preceding phrase AN and the following phrase of the song shown in Figure 1 B
The pitch difference with CO, that is, the first of the preceding phrase AN.
musical note AN₁and the first note CO of the addendum CO₁pitch of
Data specifying the difference "6 degrees below" is not supplied.
Ru. As a result, ROM42 is set to the above “6 degrees below”.
Outputs the corresponding key code conversion data "-8"
(See Figure 14), this key code conversion data “-
8” is supplied to one input terminal of the AND gate 43.
It will be done. In this case, the other input of AND gate 43
The output of the OR gate 44 supplied to the terminal is a “1” signal.
(Terminal T₈₁key code supplied to
is not "0"), so the above key code
The code conversion data “-8” uses the same AND gate 43.
The signal is supplied to the B input terminal of the adder circuit 41 via the adder circuit 41. Canada
The calculation circuit 41 receives the key code supplied to its A input terminal.
code “22” and the key code change supplied to the B input terminal.
Add the conversion data “-8” and the addition result
Outputs "14" from its output terminal. Here, this
The addition result “14” is the first note CO of the additional phrase CO₁to
This is the corresponding key code. In other words, the adder circuit
The first note of the additional phrase CO by the addition operation of 41
C.O.₁The key code "14" corresponding to was requested.
It becomes. And this key code "14" is
One input terminal of gate 88 and selector 40
is supplied to the B input terminal of. AND gates 87 and 88 each represent the subtraction circuit 7
3 and the output of the adder circuit 41.
And these AND gates 87
And 88 opening/closing control is FF89 and and game.
This is done by the port 90. In other words, FF8
Terminal T is connected to the reset terminal R of 9.₈₅reset via
The set signal Re is supplied to the set terminal S, and the terminal T is supplied to the set terminal S.₈₆
Programmable ring counter 22 via
(Figure 3) Output terminal Q₂The signal obtained in
and its output is one of the AND gates 90.
is supplied to the input end of Also, and gate 90
The other input end of the terminal T₈₇programmer via
Output terminal Q of bull ring counter 22₁got to
A signal is supplied. This allows the performer to
When the performance starts (terminal T₈₁key code to
“22” is supplied), the terminal T₈₇to
“1” signal is supplied and FF89 is in reset state.
Therefore, both inputs of AND gate 90
A “1” signal is supplied to both power ends, and
A “1” signal is output from the gate 90. stop
Therefore, this “1” signal is applied to the other side of the AND gate 88.
It is supplied to the input terminal and is also supplied via the inverter 91.
and outputs the third signal of the AND gate 87 as a “0” signal.
As a result, the AND gate 88
is in the on state, and the AND gate 87 is in the off state.
Ru. Note that the second input terminal of the AND gate 87 is
The output of AND gate 44 is supplied. this is,
terminal T₈₁If key code “0” is supplied to
(If the preceding phrase is a rest), output of AND gate 87
This is to output "0" as
will be described later. ). When the AND gate 88 turns on, the addition circuit
The output of path 41, that is, the key code “14” is
through the AND gate 88 and the OR gate 92.
It is supplied to the input end of the cumulator 93. Akiyu
The mulator 93 receives the data supplied to its input terminal.
This is an accumulator that sequentially accumulates, and is supplied to the reset terminal R.
Reset in advance by supplied reset signal Re
has been done. Therefore, the above key code "14"
is supplied to its input, the accumulator 9
The content of 3 is “14” (see Figure 12), and this
"14" is connected from the output terminal to one of the AND gates 94.
Output to the input terminal. And Gate 94 is Akiyu
It opens and closes the output of the mulator 93, and the other
The output of the OR gate 44 is supplied to the input terminal of
Ru. The OR gate 44 is connected to the terminal T as described above.₈₁
Output only when the key code supplied to is “0”
becomes a “0” signal, otherwise the output is
It becomes a “1” signal. Therefore, and gate 9
4 is the terminal₈₁If the key code supplied to
It is turned off only when there is a rest (in the case of a rest), and this result is output.
"0" is output from the end, otherwise it is on
Therefore, the output of the accumulator 93 is the same and game.
Supplied to the A input terminal of the selector 40 via the gate 94
be done. And terminal T₈₁The key code "22" is
At the time of supply, the AND gate 94 is
is on and therefore the accumulator 93
The output (key code "14") is the same AND gate 9
4 to the A input terminal of the selector 40.
Ru. The selector 40 has its A input terminal and B input terminal.
The data supplied to the control terminal C is
It selectively outputs from the output terminal based on the signal.
be. In this case, terminal T₈₄Reverse line connected to
Canon selection switch 6m is in the “on” state,
Therefore, the output of AND gate 94 (key code)
``14'') is the additional phrase CO from the output end of the selector 40.
is output as a key code. In this way, the point at which the performer starts playing (all
In other words, key code "22" is terminal T<sub>81</sub>supplied to
), the first note AN of the preceding phrase AN<sub>1</sub>
The note CO of the addendum CO corresponding to<sub>1</sub>key code of
"14" is determined by the arithmetic circuit 15 and selected.
output from the data controller 40. And selector 40?
The key code "14" output from is a diatonic scale conversion circuit.
15b and terminal T<sub>82</sub>via andgate35
(FIG. 3). place
At this point, the end of the delay time measuring circuit 13
Child T<sub>65</sub>is a “0” signal, so the andgame
The port 35 is in the off state and the key code "14" is
It is not supplied to TG7 (Figure 1). Now, the performer's performance progresses, as shown in Figure 1B.
When the first measure of the song has finished playing,
Terminal T of delay time measurement circuit 13 (Fig. 3)<sub>65</sub>but
The “1” signal rises (see FIG. 12B). and,
This "1" signal is the terminal T of the note length measuring circuit 14.<sub>73</sub>
and the other gate of the AND gate 35.
Supplied to the input end. Terminal T of note length measurement circuit 14<sub>73</sub>There is a “1” signal on
When supplied, the same note length measuring circuit 14 connects the terminal T<sub>74</sub>
of the time corresponding to the note length data supplied to
Start measurement. In this case, the programmable
The counting counter 22 is still connected to its output terminal Q.<sub>1</sub>is “1”
signal state and therefore the reset of TM23-1.
A “1” signal is supplied to the code enable terminal RE,
Terminal T of sound length measurement circuit 14<sub>74</sub>TM23-1 in
Output (note AN of preceding phrase AN<sub>1</sub>note length data) is
Supplied. As a result, the terminal T<sub>73</sub>to
When the “1” signal is supplied, the note length measuring circuit 14
is the note AN of the preceding phrase AN<sub>1</sub>Measure the time corresponding to
It will start. On the other hand, the other input terminal of the AND gate 35
When a “1” signal is supplied, the AND gate 35
turns on. In this case, the end of the arithmetic circuit 15
Child T<sub>81</sub>Then, the output of KM17-1 (key code) is
``22'') is supplied and therefore the operation
Terminal T of circuit 15₈₂As mentioned above, the key code is
The key code “14” is output, and this key code “14” is
gate 35 and terminal T₃₂via TG7
(Figure 2). And this will help
Corresponds to key code “14” from sound system 8.
musical note (note CO of addendum CO)₁musical tones)
occurs. This musical tone is generated using the above key code.
"14" is terminal T₈₂continues while output from
Ru. Note that at this time, the musical sound played by the performer (first
Note AN of line phrase AN₆(musical tones corresponding to) are emitted at the same time.
Of course it will be heard. Terminal T of note length measurement circuit 14₇₃There is a “1” signal on
From the time of supply, it is stored in TM23-1.
When the time corresponding to the note length data has elapsed,
The same note length measuring circuit 14 detects this elapsed time,
Shift pulse SHP programmable ring car
It is output to the shift terminal SH of the counter 22. This conclusion
As a result, the output of the programmable ring counter 22
Terminal Q₁“1” signal is output terminal Q₂Move to KM
Each read enable of 17-2 and TM23-2
A “1” signal is supplied to the terminal RE, and the KM17-
2 key code and TM23-2 note length data
Each terminal T of the arithmetic circuit 15₈₁and note length meter
Terminal T of measuring circuit 14₇₄supplied to Terminal T of arithmetic circuit 15 (Fig. 8)₈₁KM17 to
-2 key code (i.e. in Figure 1 B)
musical note AN₂The corresponding key code “26”) is supplied.
key code change detection circuit 70 detects this.
out, terminal T₄₂Detection signal DEL1 (Fig. 12
The sign P in₂) is output. terminal T₄₂output from
The detected signal DEL1 is passed through the AND gate 74.
Trigger terminal T of TFF76 and delay circuit 7
TFF76 is supplied to the input terminal of TFF76.
is reset, and its Q output terminal becomes a “0” signal.
(See Figure 12 C) On the other hand, the above detection signal DEL
The trigger signal from the delay circuit 77 is slightly delayed from 1.
No. TRI is output. The Q output end of TFF76 is
When the signal becomes “0”, the AND gates 71, 78,
79 are all turned off, while the and game
72, 81, and 83 are all in the on state,
As a result, the trigger signal TRI passes through the AND gate 81.
is supplied to the load terminal L of the register 85, and the end
Child T₈₁The key code "26" supplied to
is read into register 85 via port 72. Ma
In addition, the key code stored in the register 84
"22" is passed through the AND gate 83 to the subtraction circuit 7.
It is supplied to the A input terminal of 3. A input of subtraction circuit 73
When the key code “22” is supplied to the power end, the subtraction
Route 73 is supplied from the same key code "22" to the B input terminal
Subtract the key code "26" that is
The result “-4” is input to the first input terminal of the AND gate 87.
supply to. Furthermore, as can be seen from the above process,
, the above subtraction result "-4" is (the first clause of the preceding clause AN)
2 note AN₂key code) - (first of the preceding clause AN)
note AN₁key code)
It has become something that has changed. By the way, programmable ring counter 2
2 output terminal Q₂When becomes a “1” signal, this
“1” signal is terminal T₈₆Set end of FF89 via
It is supplied to child S, and FF89 is set. this
As a result, the output terminal of FF89 becomes a “0” signal,
The output of the AND gate 90 becomes a "0" signal. vinegar
That is, the second note AN of the preceding phrase AN₂corresponds to
Key code "26" is terminal T₈₁when supplied to
Then, the output of AND gate 90 becomes “0” signal.
As a result, the AND gate 87 is turned on.
Meanwhile, the AND gate 88 is turned off.
Note that once FF89 is set, it cannot be reset.
until signal Re is supplied (automatic canon performance ends).
(until the end) and is not reset.
, the second note AN of the preceding phrase AN₂key code of
"26" is terminal T₈₁After the point when the
AND gate 87 is on until the non-performance ends.
Continue the condition. When the AND gate 87 is turned on, the
The output “-4” of the subtraction circuit 73 is output to the AND gate 8.
7 and the accumulator via the or gate 92
93 input terminal. At this time, Akiyumre
The content of data 93 is the note CO of the additional phrase CO.₁Keyco of
The code is "14". Therefore, this key code
The output “-4” of the subtraction circuit 73 is accumulated to “14”.
Then, the content of the storage unit 93 is “10” (sunawa).
Chi, the note CO of the additional phrase CO₂key code),
This key code "10" is from Accumulator 93
Output. Output from accumulator 93
The key code "10" is AND GATE 94 → SELECT
40 → diatonic scale conversion circuit 15b → terminal T₈₂→ Anne
Gate 35 (Figure 3) → Terminal T₃₂→The path that will become
is supplied to TG7 through the key code.
The musical note corresponding to C “10”, that is, the additional phrase CO
The second note of CO₂The musical tones corresponding to the sound system
Occurs from time 8. Next, the note length data stored in TM23-2 is
data (note AN of preceding phrase AN)₂note length data)
After the corresponding time, shift pulse again
SHP is output from the note length measuring circuit 14, and this
As a result, the output of the programmable ring counter 22
power terminal Q₂“1” signal is output terminal Q₃Move to.
As a result, KM17-3 and TM23-3
A “1” signal is sent to each read enable terminal RE.
key number is supplied and stored in KM17-3.
-Code “22” (preceding clause AN₃The key of the note AN
) and notes stored in TM23-3
Long data (note AN₃note length data) are played separately.
Terminal T of calculation circuit 15₈₁and note length measurement circuit 14
terminal T₇₄supplied to Terminal T of arithmetic circuit 15₈₁(Figure 8) shows the key code.
When the code “22” is supplied, the key code change detection time is
The detection signal PEL1 is output from the path 70, and the (12th
Symbol P in figure A₃), this causes TFF76 to restart.
At the same time, a trigger is generated from the delay circuit 77.
Signal TRI is output. TFF76 is set,
When the Q output terminal becomes a “1” signal, the AND gate
ports 71, 78 and 79 are turned on, and this
By terminal T₈₁key code supplied to
“22” is read into register 84, and
Contents of Ta 85 (note AN₂key code "26") is
It is supplied to the A input terminal of the subtraction circuit 73. and,
In the subtraction circuit 73, the key supplied to the A input terminal is
- The key supplied from the code “26” to the B input terminal
- The code “22” is subtracted, and the subtraction result is “4”
is passed through AND gate 87 and OR gate 92
and is supplied to the input end of the accumulator 93. Na
Oh, the above subtraction result “4” is (the third of the preceding clause AN)
musical note AN₃) - (the second key code of the preceding clause AN)
AN₂key code)) change the sign of the operation result.
It has become a common thing. The above subtraction circuit is connected to the input terminal of the accumulator 93.
At the time when "4" is supplied, the accumulation
The content of Ta 93 is the key code ``10'' (the sound of the additional phrase CO).
Sign CO₂key code). Therefore, this
The key code “10” is subtracted and the result is “4”.
, the contents of the storage unit 93 are "14" (that is,
Chi, the note CO of the additional phrase CO₃key code),
This key code "14" is from Accumulator 93
Output. Output from accumulator 93
The key code "14" is sent to the TG through the above-mentioned route.
7, which causes the key code to be “14”.
The corresponding musical note, i.e. the third note of the additional phrase CO
sign CO₃The corresponding musical tone is from sound system 8.
Occur. Similarly, the key codes of the additional clauses are calculated sequentially.
(See Figure 12)
The musical tone corresponding to the key code is the sound system.
By arising from 8, the automatic performance of the regressive canon
A musical performance is performed. Next, it does not appear in the song example shown in Figure 1B.
However, the operation of the arithmetic circuit 15 when there is a rest between notes is
I will explain about the work. For example, if Figure 13 A is the preceding phrase of a certain song,
The follow-up phrase when playing the antigonal canon for this preceding phrase is
Figure 13 b. And below, in Figure 13 B
The key of each note of the additional phrase shown is determined by the arithmetic circuit 15.
Explain the process required. In addition, in this figure
Just before the automatic performance of the additional phrase shown begins, the recorder
The key code “24” is stored in the register 85.
Also, there is a key code in the storage unit 93.
It is assumed that "12" is stored. Terminal T of arithmetic circuit 15 (Fig. 8)₈₁13th
The key codes of the preceding clauses are supplied sequentially as shown in Figure C.
Then, the key code change detection time will be changed accordingly.
The detection signal from path 70 as shown in FIG.
DEL1 is output sequentially, which causes TFF76
The Q output changes as shown in FIG. 13(e). vinegar
That is, first, time t₁At terminal T₈₁ni keyco
“26” (the note H in the preceding phrase)₁key code) is provided.
When supplied, the detection signal DEL1 is output and this
TFF76 is set by the detection signal DEL1.
Ru. Next, time t₂terminal T at₈₁key code to
“0” (rest H of preceding phrase₂key code) is supplied
When the detection signal DEL1 is detected, the detection signal DEL1 is outputted again. death
However, at this time, the output of the OR gate 75 is a “0” signal.
(terminal T₈₁The key code supplied to
Therefore, the same detection signal DEL
1 is not supplied to TFF76 and TFF76 is set.
Continue the condition. Next, time t₃At terminal T₈₁to
Key code “22” (note H in the preceding phrase)₃key code of
is supplied, which causes the detection signal DEL1 to be output.
Then, the same detection signal DEL1 is sent to TEE76 again.
TEE 76 is reset. next,
time t_FourAt terminal T₈₁key code “0” (preceding)
phrase rest H_Fourkeycode) is supplied, and this
Detection signal DEL1 is output, but in this case
The output of the OR gate 75 is also a “0” signal, and
Therefore, the detection signal DEL1 is supplied to TFF76.
First, the TFF 76 continues in the reset state. Same hereafter
, time t_Five,t₆,t₇The key code of the preceding clause is
The terminals are sequentially connected to terminal T.₈₁When supplied to
TFF 76 repeats set/reset. time t₁When TFF76 is set in
- code “26” is read into register 84 (first
Figure 3), and the read key code “26” is as follows.
It is held until TFF 76 is set. Time
carved t_FiveWhen TFF76 is set again in
- code “24” is read into register 84, and
The read key code “24” is then TFF76
set time t₇is retained until On the other hand, the cash register
Star 85 shows time t₁The key code “24” was read previously.
(Fig. 13). And time t₃to
When TFF76 is reset, the key code
“22” is read into register 85 and read again.
The key code “24” is then reset by TFF76.
It is held until it is deleted. time t₆In TFF7
When 6 is reset again, the key code “26” will be
Read into register 85. Through the above operations of each part of the circuit, the subtraction circuit 73
The key code supplied to the A input terminal of
It will look like this. That is, time t₁~t₃in
is unset because TFF76 is set.
gate 49 is in the on state, and therefore the red gate is in the on state.
The key code "24" stored in register 85 is
It is supplied to the A input terminal of the subtraction circuit 73. time t₃~
t₉TFF76 has been reset in
Therefore, the AND gate 83 is in the on state, and the recorder is in the on state.
The key code "26" stored in register 84 is
It is supplied to the A input terminal of the subtraction circuit 73. Similarly,
time t_Five~t₆is stored in register 85 in
The key code "22" is also the time t₆~t₇In
Key code “24” stored in register 84
are respectively supplied to the A input terminal of the subtraction circuit 73. As a result, the output of the subtraction circuit 73 is shown in FIG.
It comes to show. Note that the subtraction circuit 7 shown in this figure
The output of 3 is {key code shown in H} - {key code shown in C}
-code} can be easily determined by the operation
cormorant. The output of this subtraction circuit 73 is then
Akiyumre via gate 83 and or gate 92
data 93, but in this case time t₂~t₃oh
and time t_Four~t_FiveIn, the exit of or gate 44
The force becomes a “0” signal and therefore the key code
"24" and "26" are not supplied to the accumulator 93,
Instead, “0” is supplied to the accumulator 93.
Ru. Next, consider the output of the accumulator 93.
(See Figure 13). First, time t₁just before
The key code ``12'' is in the storage unit 93.
is stored. time t<sub>1</sub>Aki Yumure in
When “-2” is supplied to the input terminal of data 93, this
is accumulated to "12", and the contents of accumulator 93 are
becomes “10” (note I of the additional phrase<sub>1</sub>key code),
This key code "10" is output from the output end.
And this key code "10" is the time t<sub>3</sub>hold up to
be done. time t<sub>3</sub>The input of the accumulator 93 is
When "4" is supplied to the power end, this "4"
It is accumulated to "10" and the contents of the accumulator 93 are
It becomes “14” (Note I of the additional phrase<sub>3</sub>key code), this
The key code "14" is output from the output terminal. So
Then, this key code "14" is the time t<sub>Five</sub>held up to
It will be done. Similarly, from the storage unit 93,
is time t<sub>Five</sub>key code ``12'' (the sound of the additional phrase)
Sign I_Fivekey code) at time t₆key code in
C “10” (note I of the addendum)₆key code) is that
Each is output. And this accumulator 9
The output of 3 is sent to selector 4 via AND gate 94.
It is output as the key code of the additional phrase from 0, but
In this case, time t₂~t₃and time t_Four~t_Fivein
The output of the OR gate 44 becomes a “0” signal, and
Therefore, at the same time, the accumulator 93
No output is output from selector 40, and instead
"0" is output. In other words, the extra clause is a rest I₂，
I_Fourbecomes. In this way, there are rests between the notes of the preceding phrase.
In this case, the calculation circuit 15 calculates each key key of the additional phrase.
The code can be calculated correctly. (3) Expanded canon This enlarged canon is shown in Figure 1 (c).
The phrase is multiplied by n times each note of the preceding phrase (in the example shown in Figure 1 C)
It is imitated under the note length (twice as long).
be. The performer uses the canon type selection section 6c (Fig. 3).
and select "Expansion Canon", and then select the delay time setting section 6.
Set the “delay time” (1 measure) using b, and
The pitch difference (“8 degrees below”) is set by the pitch difference setting section 6e.
The note length setting section 6d also sets the note length (2
After setting the Canon ON/OFF switch 6
a, and at the same time the preceding phrase of the song shown in Figure 1 C.
When you start playing AN, the direct canon mentioned above,
As in the antigrade canon, each tone of the antecedent phrase AN
KM17-1, 17-2... whose information is shown in Figure 3
and stored sequentially in TM23-1, 23-2...
It will be done. Then, the “delay time” (the time corresponding to one measure)
) has elapsed, the terminal of the delay time measuring circuit 13
T₆₅signal rises to “1” and the automatic performance of the expanded canon begins.
The performance begins. In other words, the terminal T of the delay time measuring circuit 13₆₅but
“1” signal rises, and this “1” signal
The other input terminal of the note length measuring circuit 1
4 terminal T₇₃and gate 35
is in the ON state, while the note length measuring circuit 14 is in the ON state.
Start measuring note length. At this time, the programmer
The bull ring counter 22 has its output terminal Q₁but
is in the state of “1” signal, therefore KM17
-1 output (note AN in Figure 1 C)₁key of
chord) and TM23-1 output (note AN₁of
note length data) are respectively connected to the terminal T of the arithmetic circuit 15.₈₁oh
Terminal T of the note length measurement circuit 14₇₄supplied to
Ru. Terminal T of arithmetic circuit 15₈₁(Figure 8)
fallen note AN₁The key code is A of the adder circuit 41.
Supplied to the input end. This addition circuit 41
, as in the case of the direct canon mentioned above.
Key code conversion data output from ROM42
(that is, pitch conversion is performed), and
From the output terminal of the calculation circuit 41 to the B input terminal of the selector 40
is supplied to In this case, the control end of the selector 40
Reverse canon selection switch 6 connected to child C
m is in the off state. Therefore, selector 40
The output of the adder circuit 41 supplied to the B input terminal of
Note CO of the additional phrase CO from the output end of the selector 40₁
is output as a key code, and the diatonic scale conversion circuit 15
b and terminal T₈₂and gate 35 (th
(Fig. 3). Andoge
The terminal 35 is the terminal T of the delay time measuring circuit 13.₆₅but
It is in the on state when the “1” signal rises.
therefore, it is supplied to one input end.
Note CO of added clause CO₁The key code for
gate 35 and terminal T₃₂via TG7
(Figure 2). And this adds
Note CO of line phrase CO₁The musical tone corresponding to
It originates from stem 8. This musical tone is generated using the above key.
The cord is terminal T₈₂continues while output from
Ru. On the other hand, the terminal T of the delay time measuring circuit 13₆₅but
When the “1” signal rises, the note length measuring circuit 14
Start measuring note length, in this case note length measurement
Terminal T of circuit 14₇₂from the note length setting section 6d.
Data corresponding to “2x” is supplied, and
Terminal T₇₄is stored in TM23-1.
Note length data (note AN₁note length data) is provided.
is being paid. terminal T₇₂The data corresponding to “2x”
When the frequency converter shown in FIG.
14a is the clock pulse CLK as mentioned above.
A signal with a period twice as long as the clock of the counter 14b is
Output to terminal CK. As a result, terminal T₇₄supplied to
twice the time corresponding to the note length data
When the time elapses, the output of the counter 14b and
terminal T₇₄matches the note length data supplied to
and terminal T₇₅A shift pulse SHP is output from
Ru. In this case, terminal T₇₄note length supplied to
The data is the note length data corresponding to the note AN, i.e.
In other words, it is long note data corresponding to a half note, and
Therefore, the time corresponding to a whole note has elapsed.
Shift pulse SHP is output. Note length measurement
Terminal T of circuit 14₇₅Shift pulse SHP is output from
When the programmable ring counter 22
output terminal Q₂becomes a “1” signal, and as a result,
The key code (music note) stored in KM17-2
AN₂key code) and stored in TM23-2.
Note length data (note AN₂note length day
) are the arithmetic circuit 15 and note length measuring circuit 1, respectively.
4. Musical notes supplied to the arithmetic circuit 15
AN₂The key code is
Chord conversion (pitch conversion) is performed, and the notes of the additional phrase CO
C.O.₂It is supplied to TG7 as a key code. child
Due to this, the note CO of the additional phrase CO₂Musical tone corresponding to
is generated from sound system 8, and this music
Sound generation occurs when the next shift pulse SHP measures the note length.
until it is output from path 14, that is, the note AN₂
This continues until twice the note length has elapsed.
Ru. Similarly, the key code of each note in the preceding phrase AN
Each key code of the addiku CO is created sequentially in response to
Also, the key code of this additional phrase CO is doubled.
is pronounced as a musical tone under the note length of
Then, an automatic performance of the expanded canon is performed. (4) Decreasing canon This decreasing canon, as shown in Figure 1 D,
The phrase CO multiplies each note of the preceding phrase AN by 1/n (Fig.
In the song example shown in D, the note length is 1/2 times
This imitates the above-mentioned extended canon.
The only difference is that the note length is multiplied by 1/n. Below
Below, we explain the behavior in the case of this decreasing canon.
Ru. The performer uses the operation section 6 to control this decreasing canon.
After making various settings, turn on/off the canon switch.
Operate the switch 6a and at the same time take the lead shown in Figure 1 D.
When you start playing a phrase AN, each note of the preceding phrase AN
AN₁,AN₂Key code and sound corresponding to...
The note length data is KM17-1, 17-2... and
The data are sequentially stored in the TM23-1, 23-2, and so on.
Then, the “delay time” (in this case, corresponding to 2 measures)
time) has elapsed, the delay time measuring circuit 13
terminal T₆₅rises to the “1” signal, and the self of the decreasing canon
The dynamic performance begins. In other words, the terminal T of the delay time measuring circuit 13₆₅but
At the time when the “1” signal rises, the arithmetic circuit 1
5 terminal T₈₁is the output of KM17-1 (note AN₁
key code) and a note length meter.
Terminal T of measuring circuit 14₇₄is the output of TM23-1
(note AN₁note length data) is supplied.
Terminal T of arithmetic circuit 15₈₁note AN supplied to₁of
The key code is the expanded canon or direct canon mentioned above.
In the same way as in the case of "NON", the code is
Converted (pitch conversion), the note CO of the additional phrase CO₁of
Terminal T as key code₈₂and gate through
35. And in this case
35 is in the on state, the above-mentioned sound
Sign CO₁The key code is the same AND gate 35 and
terminal T₃₂is supplied to TG7 via. This is it
, note CO from sound system 8₁corresponds to
A musical tone is generated, and this musical tone generation is caused by a shift pulse.
Until SHP is output from the note length measurement circuit 14,
You can continue with. On the other hand, the terminal T of the delay time measuring circuit 13₆₅but
When the “1” signal rises, the note length measuring circuit 14
Start measuring note length. In this case, terminal T₇₂for
Data corresponding to 1/2 times is sent from the note length setting section 6d.
(In the song shown in Figure 1 D)
The note length of the additional phrase CO is 1/2 of the note length of the preceding phrase AN.
), therefore, the frequency converter shown in FIG.
The output of 14a is 1/2 of the period of clock pulse CLK.
The signal has a period of . As a result, TM23-
1 output (note AN₁note length data)
When 1/2 of the time has elapsed, the comparator circuit
Data supplied to both input terminals of 14c (Fig. 7)
matches, terminal T₇₅Shift pulse SHP is output from
be done. terminal T₇₅Shift pulse SHP is output from
When the programmable ring counter 22
Output terminal Q₂becomes a “1” signal, and the KM17-2
Output (note AN₂key code) and TM23-
Output of 2 (note AN₂note length data) are played separately.
The signal is supplied to the calculation circuit 15 and the note length measurement circuit 14.
, this makes the note CO of the addendum CO₂corresponds to
A musical tone is generated from the sound system 8,
Also, this musical sound generation is a musical note AN₂When 1/2 of the note length of
will continue for a period of time. In the same way, each addendum CO
The musical tones corresponding to the notes are generated sequentially, and the decreasing canon is
Automatic performance is performed. (5) Retrograde canon This canon is, as shown in Figure 1,
Is the phrase CO the last note of the preceding phrase AN for each measure?
The imitation is directed toward the first note. below,
The circuit shown in Figure 3 in the case of this retrograde canon
Explain the operation. The performer uses the canon selection section 6c to
and set the pitch difference by the pitch difference setting section 6e.
Set "10 degrees below" and set the delay time setting part 6b again.
After setting the delay time "1 bar", the canon
Operate the ON/OFF switch 6a, and at the same time
Performance of the first measure of the preceding phrase AN of the song shown in Figure H
As in the case of each canon mentioned above,
note AN of preceding phrase AN₁~AN_FiveMusical sound information (keyco
KM1 (note length data) shown in Figure 3.
7-1 to 17-5 and TM23-1 to 23-5
are stored sequentially. Next, the performer plays the antecedent phrase AN
tempo indicator 28 (third measure)
It starts according to the timing of the lighting in the figure), but
The performer plays the notes AN in the second measure.₆perform a performance of
A delay time (time equivalent to 1 measure) has elapsed just before
do. This is due to the following reason. That is, the tempo
Tempo display by display 28 and delay time measurement circuit
13, the measurement of "delay time" is also a clock.
This is done based on pulse CLK. Therefore,
When the “delay time” has elapsed and the tempo indicator 28
It is exactly the same time as the lighting. On the other hand, the performer
After confirming that the point indicator 28 is lit, the sound of the second measure is played.
sign AN₆perform. As a result, the "delay time"
The elapsed time is the performer's note AN₆Just before the performance of
Become. Now, when the "delay time" has passed, it is shown in Figure 6.
Terminal T of delay time measurement circuit 13₆₅becomes “1” signal
It rises, but at this time, terminal T₆₇reverse connected to
Row canon selection switch 6k is on.
Then, AND gate 13d was on, and
Terminal T₆₅As soon as the signal rises to “1”
terminal T₆₆The load pulse LOP is output from the
Load terminal L of grammable ring counter 22
supplied to By the way, at this time the ring counter
Circuit 12 is terminal T₅₅becomes a “1” signal state.
This means that the "delay time" has elapsed as mentioned above.
Still a note AN at the time₆was being played
No, 5 notes AN₁~AN_Fivehas finished playing
This is because it is in a state of Therefore, "when it is late"
When the above-mentioned load pulse period has elapsed,
Ring counter 22 with programmable SLOP
is supplied to the load terminal L of the programmable
The ring counter 22 is located at the end of the ring counter circuit 12.
Child T₅₁~T_5oWhen you read the state of
Output terminal Q of ring counter 22_Fiveis “1”
signal, and this “1” signal is sent to KM17-5 and
and each lead enable terminal RE of TM23-5.
Supplied. As a result, the output of KM17-5
(i.e. the note AN_Fivekey code) and TM
23-5 output (i.e. the note AN_Fivenote length
data) is the terminal T of the arithmetic circuit 15.₈₁and sound
Terminal T of note length measurement circuit 14₇₄supplied to Calculation
Terminal T of circuit 15₈₁ni musical note AN_Fivekey code is provided.
If provided, the same key code will be used as a direct canon etc. as mentioned above.
The chord is converted (pitch converted) in the same way as in the case of
Note CO of line phrase CO₁Terminal T as the key code for₈₂mosquito
is output. And in this case, and gate 3
5 is in the on state, the same key code is activated.
gate 35 and terminal T₃₂to TG7 via
supplied, which causes the note CO of the addendum CO₁against
A corresponding musical tone is generated from the sound system 8, and
In addition, this musical tone generation is shifted from the note length measuring circuit 14.
This continues until the top pulse SHP is output. On the other hand, the terminal T of the note length measuring circuit 14₇₄to TM2
3-5 output (note AN_Fivenote length data) is provided.
and at the same time, terminal T₇₃"1" signal on
is supplied, the note length measuring circuit 14 detects the note length.
AN_FiveOpen the time measurement corresponding to the note length data.
start And the time corresponding to the same note length data
When the shift pulse SHP is
Output to shift terminal SH of bull ring counter 22
Powered. By the way, in this case programmable
The shift direction designation terminal D of the ring counter 22 is
A “1” signal is supplied from the canon type selection section 6c.
ing. Therefore, programmable ring cards
The counter 22 outputs the above shift signal to its shift terminal SH.
When pulse SHP is supplied, output terminal Q_Five“1” of
The signal is output terminal Q_Four, which results in KM1
7-4 output (note AN_Fourkey code) and
TM23-4 output (note AN_Fournote length data)
are the terminals T of the arithmetic circuit 15, respectively.₈₁and note length measurement
Terminal T of circuit 14₇₄supplied to Arithmetic circuit 15
terminal T₈₁ni musical note AN_Fourkey code will be provided
and the terminal T of the same arithmetic circuit 15₈₂From the additional phrase CO
musical note CO₂key code will be output and this key code will be output.
AND gate 35 and terminal T₃₂through
Supplied to TG7. And with this, the addendum
CO note CO₂The musical tones corresponding to the sound system
This musical sound occurs from the preceding phrase.
AN note AN_FourThe time corresponding to the note length data of
It will continue until the end of time. Similarly, the note CO of the additional phrase CO₃, CO_Four,
C.O._FiveThe musical tones corresponding to each are the second elementary of the preceding phrase AN.
It is emitted at the same time as the musical tone of the section (the musical tone played by the performer).
be heard. Thus, the performance of the second measure ends.
and terminal T of the delay time measurement circuit 13.₆₆again from
Programmable ring cowl with pulse LOP
output to the printer 22. At this time, the first clause of the preceding clause AN
Each note AN in 2 measures₆~AN_Tenkey code and
The note length data is KM17-6~17-10 and
and stored in TM23-6 to TM23-10.
Also, the terminal T of the ring counter circuit 12₅₁but
It is in the state of “1” signal. (In addition, in this case, the preceding phrase
The third measure of AN has not started playing yet.
stomach. ) Therefore, the load pulse LOP is
When output to the marble ring counter 22,
Output terminal of programmable ring counter 22
Q_Tenbecomes a “1” signal, and the output of KM17-10
(note AN_Tenkey code) and TM23-10
Output (note AN_Tennote length data) are calculated respectively.
It is supplied to the circuit 15 and the note length measuring circuit 14,
Note CO of the additional phrase CO₆The musical tone corresponding to the sound
This musical tone is generated from system 8, and this musical tone generation is a sound
sign AN_TenThe time corresponding to the note length data of
You can continue until you reach the end. Below is the programmable link
The shift counter 22 is supplied with the shift pulse SHP.
Q every time₉,Q_Ten…and the position of the “1” signal moves.
, which causes the note CO of the additional phrase CO₆, CO₇…
... will be played automatically. The above is an electronic organ which is one embodiment of this invention.
The details are as follows. By the way, this electronic organ is the best
As mentioned at the beginning, it has a single note structure. However,
However, this invention is of course applicable to electronic musical instruments with multiple notes.
can be used, and then the compound sound to which this invention is applied
The configuration of the electronic organ will be explained below. Figure 15 shows an electronic organ with a multitone structure according to the present invention.
FIG. 2 is a block diagram showing an example of a gun. In this diagram
The keyboard circuit 100 is designed to correspond to each key on the keyboard.
It consists of multiple key switches. tree
- The assigner 101 assigns keys to each key of the keyboard circuit 100.
Press by detecting the on/off operation of the switch.
Detects the lower keys and generates the key code corresponding to each pressed key.
m pronunciation channels corresponding to the maximum number of simultaneous pronunciations
Assign to one of the channels, and assign to each pronunciation channel.
Outputs the key code in a time-divided manner. This key asa
The keys of each sound channel output from Ina 101
- code is supplied to TG102 and distribution circuit 103.
be provided. TG102 corresponds to the above sound channel
Accordingly, there are m musical tone generation sequences, and each musical tone generation system
Assign each to the corresponding pronunciation channel in the column.
The musical tone signal corresponding to the key code (preceding)
The sound system 10 generates a musical tone signal of the phrase
Output to 4. The distribution circuit 103 receives the time from the key assigner 101.
Key code of each pronunciation channel output by division
m pieces provided corresponding to each sound channel.
distributed to automatic cannon devices 105-1 to 105-m.
supply Automatic canon devices 105-1 to 105-
Both m are the same as the automatic cannon device 5 shown in Figure 3.
They have the same configuration and the same functions. stop
The operating section 1 has the same configuration as the operating section 6 shown in FIG.
66 to each automatic canon device 105-1 to 105-
Operation signals and data are supplied in parallel to
In addition, each automatic cannon device 105-1 to 105-m
The output (key code of additional phrase) is each TG107-
1 to 107-m. TG107-1～
Both 107-m are the same as TG7 shown in Figure 2.
These TG107-1 to 107-m
The musical tone signal output from (the musical tone signal of the additional phrase) is
Each is supplied to a sound system 104. Sau
The command system 104 includes TG102 and TG10.
Miculates the musical tone signals output from 7-1 to 107-m.
After kissing, it is pronounced as a musical note. This configuration ensures that multiple keys are the same.
corresponds to each key, even if it is pressed at the same time.
It is now possible to create a key code for add-on clauses.
This allows automatic canon performance of multiple notes.
I can do it. In addition, in the above-mentioned embodiment, as shown in Table 1,
It is designed to enable automatic performance of all canons.
Therefore, the circuit configuration is quite complex.
It's getting rough, but the number of canons that can be implemented has been reduced.
The circuit configuration can be further simplified by
It is possible. For example, automatic performance of retrograde canons is required.
If not required, use a programmable ring counter.
A normal ring counter (preset) is used as the counter 22.
ring counter) that cannot be used, or
If automatic performance of the retrograde canon is not required, use the calculation
The subtraction circuit 73 in the circuit 15, the register 84,
85 etc. can be omitted. In addition, in the above embodiment, the expanded canon, the decreased canon,
To perform the canon, note length meter shown in Figure 7
The measurement circuit 14 has a configuration using a frequency converter 14a.
However, this can also be configured as follows:
It is. In other words, the clock pulse LCK can be directly
While supplying the clock terminal of the counter 14b,
terminal T₇₄A multiplication/division circuit is provided between the comparator circuit 14c and the comparison circuit 14c.
For example, the note length is specified as 1/m times.
Time is terminal T₇₄Multiply/divide the note length data obtained by
After setting it to 1/m by the circuit, it is supplied to the comparison circuit 14c.
For example, when the note length is specified as m times
is terminal T₇₄The note length data obtained in is multiplied by m.
The signal is supplied to the post-comparison circuit 14c. Furthermore, in the above embodiment, the key code of the addendum phrase is
The arithmetic circuit 15 forming the code is KM17-1~17.
-n is configured on the output side, but the calculation circuit
Route 15 is provided on the input side of KM17-1 to 17-n.
The key code of the preceding phrase is determined in advance by the arithmetic circuit 15.
Convert the key code of the additional clause and use this converted key
Store the code in KM17-1~17-n
It is also possible to configure However, in this case
is the terminal T of the arithmetic circuit 15₈₆,T₈₇supplied to etc.
Of course, it is necessary to change the signal (this
Since it can be easily carried out, detailed explanation will be given below.
(omitted). Furthermore, in the above example, TG4,10
The musical tone signal of the preceding phrase output from TG 2 and TG 7, 1
Raku of additional phrases output from 07-1 to 107-m
You can set each sound signal to a different tone.
It is possible to change the timbre of each musical tone signal to a human voice.
It can also be a sound. For example, the musical tone signal of the preceding phrase
is set to a female voice, and the musical tone signal of the additional phrase is set to a male voice.
It is effective to set this. Furthermore, in the embodiment of FIG.
Part consisting of non-device 5, operation section 6 and TG 7
Although the configuration has only one series, multiple series
If you set it up, you can perform more complex canon performances.
I can. In this case, the preceding phrase for each series
To make the delay time and pitch difference of the following phrases different.
is preferable. Of course, the timbre of the additional phrase is different for each series.
It is also possible to make the Furthermore, in the above embodiment, the key code of the preceding phrase is
The code is now generated by pressing a key on the keyboard.
However, instead of this, I memorized the key code of the preceding clause.
An external storage device may also be used. child
In this case, completely automatic performance can be realized. As explained above, according to the first to fifth inventions,
This requires less memory and is easy to use.
Effect that allows automatic performance of canon in composition
There is. In addition, each invention obtains the following effects.
can be done. According to the first invention, the delay time of the follow-up phrase can be set arbitrarily.
can be set, thus e.g. 1
Canon performance such as one measure delay or two measure delay etc. can be performed arbitrarily.
I can. According to the second invention and the third invention, the sound of the additional phrase
high can be changed arbitrarily and therefore
You can play canon with a variety of variations such as line canon etc.
It can be played dynamically. According to the fourth invention, the additional phrase stored in the memory
You can change the order in which performance data is read out.
This allows for retrograde play in addition to normal canon performance.
Automatically performs a variety of canon performances such as non, etc.
can be done. According to the fifth invention, the note length of the additional phrase can be arbitrarily changed.
can be changed, and therefore the expansion canon and the reduction canon.
If you want to play a canon that is full of variety, such as a small canon,
It can be done dynamically.

[Brief explanation of drawings]

FIG. 1 is a diagram showing examples of various canon music pieces, FIG. 2 is a block diagram showing a schematic configuration of an electronic organ which is an embodiment of the present invention, and FIG. 3 is a diagram showing the automatic canon device 5 and the operating section in FIG. 2. 6, and FIGS. 4 to 8 show details of the key code change detection circuit 11, ring counter circuit 12, delay time measurement circuit 13, note length measurement circuit 14, and calculation circuit 15 in FIG. 3, respectively. 9 is a circuit diagram showing the arithmetic circuit 15 shown in FIG. 3 during orthogonal canon execution.
10 and 11 are diagrams for explaining the operation of the diatonic scale converting circuit 15b shown in FIG. 8, respectively. A time chart and an explanatory diagram for explaining the operation of the arithmetic circuit 15 shown in FIG. 3 during the execution of a retrograde canon, respectively, and FIG. 15 shows the configuration of an electronic organ with a multitone configuration when the present invention is applied to the same electronic organ. FIG. 2...Keyboard circuit (musical sound generation means), 3...Musical sound generation section (musical sound generation means), 5...Automatic canon device,
6...Operation unit, 12...Ring counter circuit, 1
3...Delay time measurement circuit, 14...Note length measurement circuit (conversion means), 15...Arithmetic circuit (conversion means),
17-1 to 17-n...Key code memory (KM), (storage means), 22...Programmable
Ring counter (reading means), 23-1 to 23
-n...Time memory (TM) (storage means).

Claims (1)

[Scope of Claims] 1 (a) musical tone information generating means for sequentially generating digital musical tone data corresponding to musical tones to be played; and (b) detecting changes in the digital musical tone data sequentially generated from the musical tone information generating means. (c) a duration measuring means for measuring the duration of each digital musical tone data sequentially generated from the musical tone information generating means and outputting duration data; (d) said musical tone information generating means. (e) a first storage means for sequentially reading the digital musical tone data generated from the means every time the change detecting means detects a change; (f) delay time measuring means for measuring a predetermined time from the start of generation of digital musical tone data in the musical tone information generating means; (g) said predetermined time; (h) after the predetermined time has elapsed, each digital musical tone data stored in the first storage means;
reading means for sequentially reading data at each elapsed timing of time indicated by the duration data stored in the second storage means; (i) digital musical tone data generated from the musical tone information generating means and the first memory; An electronic musical instrument comprising: musical tone generating means for inputting digital musical tone data read from the means and simultaneously generating musical tones corresponding to each digital musical tone data. 2. The electronic musical instrument according to claim 1, wherein the delay time setting means sets the predetermined time by a number of bars or a number of beats. 3. The electronic musical instrument according to claim 1 or 2, wherein the musical tone information generating means generates digital musical tone data in response to key press operations by a player. 4 (a) musical tone information generating means for sequentially generating digital musical tone data corresponding to musical tones to be played; (b) change detecting means for detecting changes in the digital musical tone data sequentially generated from the musical tone information generating means; (c) a duration measuring means for measuring the duration of each digital musical tone data sequentially generated from the musical tone information generating means and outputting duration data; (d) digital musical tone data generated from the musical tone information generating means; (e) a first storage means that sequentially reads musical tone data each time the change detection means detects a change; (e) the change detection means detects a change in the duration data output from the duration measurement means; (f) delay time measuring means for measuring a predetermined time from the start of digital musical tone data generation in the musical tone information generating means; (g) after the predetermined time has elapsed, the Each digital musical tone data stored in the first storage means,
(h) converting the pitch of the digital musical tone data read from the first storage means; (h) converting the pitch of the digital musical tone data read from the first storage means; (i) a musical sound generator that inputs the digital musical sound data generated by the musical sound information generating means and the digital musical sound data output from the converting means and simultaneously generates musical sounds corresponding to each of these digital musical sound data; An electronic musical instrument comprising means and. 5. The electronic musical instrument according to claim 4, wherein the musical tone information generating means generates digital musical tone data in response to key press operations by a player. 6 (a) musical tone information generating means for sequentially generating digital musical tone data corresponding to musical tones to be played; (b) converting means for converting the pitch of the digital musical tone data generated from the musical tone information generating means; c) change detection means for detecting changes in the digital musical sound data output from the conversion means; (d) measuring the duration of each digital musical sound data sequentially output from the conversion means and outputting duration data; (e) first storage means for sequentially reading the digital musical tone data output from the conversion means each time the change detection means detects a change; (f) the duration measurement means (g) measuring a predetermined period of time from the time point at which the musical tone information generating means starts generating digital musical tone data; (h) after the predetermined time has elapsed, each digital musical tone data stored in the first storage means;
reading means for sequentially reading data at each elapsed timing of time indicated by the duration data stored in the second storage means; (i) digital musical tone data generated from the musical tone information generating means and the first memory; An electronic musical instrument comprising: musical tone generating means for inputting digital musical tone data read from the means and simultaneously generating musical tones corresponding to each digital musical tone data. 7 (a) musical tone information generating means for sequentially generating digital musical tone data corresponding to musical tones to be played; (b) storage means for sequentially storing digital musical tone data generated from the musical tone information generating means; (c) (d) a delay time measuring means for measuring a predetermined time from the start of digital musical sound data generation in the musical sound information generating means; (d) a readout for sequentially reading out the digital musical sound data stored in the storage means after the predetermined time has elapsed; (e) control means for changing and controlling the reading order of digital musical tone data in the reading means; (f) digital musical tone data generated from the musical tone information generating means and digital musical tone data read from the storage means; an electronic musical instrument comprising: musical tone generating means for inputting digital musical tone data and simultaneously generating musical tones corresponding to each of these digital musical tone data. 8 (a) musical tone information generating means for sequentially generating digital musical tone data corresponding to musical tones to be played; (b) change detecting means for detecting changes in the digital musical tone data sequentially generated from the musical tone information generating means; (c) a duration measuring means for measuring the duration of each digital musical tone data sequentially generated from the musical tone information generating means and outputting duration data; (d) digital musical tone data generated from the musical tone information generating means; (e) a first storage means that sequentially reads musical tone data each time the change detection means detects a change; (e) the change detection means detects a change in the duration data output from the duration measurement means; (f) delay time measuring means for measuring a predetermined time from the start of digital musical tone data generation in the musical tone information generating means; (g) after the predetermined time has elapsed, the Each digital musical tone data stored in the first storage means,
(h) a setting means for setting the value K; (i) generating information from the musical tone information generating means; musical tone generating means for inputting the digital musical tone data output from the digital musical tone data and the digital musical tone data output from the reading means and simultaneously generating musical tones corresponding to each of the digital musical tone data.