JPS5860795A - Electronic musical instrument - Google Patents

Abstract

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

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in an electronic musical instrument having a cresciendo pedal.

In recent years, electronic musical instruments have been developed whose timbre changes sequentially depending on the amount of depression of the cressiendo pedal.

This electronic musical instrument has an internal memory for storing timbre data, and 100 pieces of timbre data are stored in advance in the memory, for example, from 0 to 99@. For example, when the crescendo end pedal is depressed only outside the 10% of the total pedal stroke, 0
The tone data in addresses ~9 are read out, and a musical tone signal is formed based on these tone data.For example, when the cresciendo pedal is depressed 56 times, which is the total amount of depression, the tone data in addresses 0~9 are read.
The timbre data within address 49 is successively read out, and a musical tone signal is formed based on the read timbre data.

Incidentally, the memory in the above-mentioned electronic musical instrument usually uses a semiconductor RAM (random access memory), and therefore the contents of the memory are erased every time the power is turned off. Therefore, each time the power is turned on, it is necessary to write new tone data into the memory. Furthermore, when writing the same data to a plurality of electronic musical instruments, it is necessary to write the data to each electronic musical instrument. However, there is a problem in that this data writing is very time-consuming and bothersome for the player.

Therefore, the present invention proposes an electronic musical instrument that can write data to a memory in an extremely short time, and is characterized by providing a means for reading data stored in an external storage medium and writing it to the memory. .

Hereinafter, one embodiment of the present invention will be described with reference to the drawings. In the following description, the 11' signal and the @0'' signal each refer to a signal at a binary logic level.

FIG. 1 is a block diagram showing the configuration of an electronic musical instrument according to the present invention, and in this figure, reference numeral 1 indicates a keyboard. This keyboard 1 is composed of a plurality of keys (keys) and a key switch provided corresponding to each key. When a key is pressed by a performer, key information KO corresponding to the pressed key is displayed. It is output and supplied to each of n tone generators TGI to TGII. Each of the tone generators TGI to TGn receives the supplied key information KO.
It is a circuit that forms a musical tone signal having a tone pitch corresponding to , and a tone color predetermined for each tone generator, and each of the tone generators TG1 to TG! The musical tone signals formed by L are respectively connected to gate circuits p1 to Gl.
! supplied to The gate circuits G1 to Gn are controlled to open and close by the outputs of the OR gates R1 to Rn, respectively.
These gate circuits 01~G! The above musical tone signal +i that has passed through l is mixed and outputted from the sound system 2 as a musical tone.

On the other hand, codes 81 to 8!1 are tone generators T01 to
There are n tone color setting switches provided respectively corresponding to TGn, and each output of these tone color setting switches 81 to Sn is supplied to one input terminal of each of the OR gates Rl to Rn, and The signal is supplied to the encoder 3. The encoder 3 encodes the output of the switch in the ON state among the timbre setting switches 81 to 8n, and supplies it to the input terminal of the selector 4 as timbre data. When the @1'' signal is supplied to the control terminal C of selector 4,
The data obtained at the input terminal M is outputted from the output terminal, and when the "O" signal is supplied to the control terminal C, the data obtained at the input terminal B is outputted from the output terminal. The data output from this selector is supplied to the input terminal IN of the memory 5. In addition, selector 4
A signal obtained at the terminal T9 of the control circuit 7 is supplied to the control terminal 0 of the control circuit 7. The memory 5 is a random access memory (RAM), and when the "1$1 signal is supplied to its terminal W/R, the input terminal XH is stored within the address specified by the data supplied to the address terminal D. Write the data obtained to the terminal (write mode), and also write the data to the terminal W
When the @0” signal is supplied to /R, the address terminal ^
The data within the address specified by the data supplied to the write head 21 is outputted from the output terminal q and supplied to the terminal 'I'1 of the write head 21 and the control circuit 7 (read mode).

The pushbutton switch 8 is a switch for specifying the write mode and readout mode of the memory 4. When this pushbutton switch 8 is pressed, the data is read from the memory 5 via the OR gate 9.
The terminal W/R&:@l" signal is supplied (write mode), and when the switch 8 is released, the terminal W/RC'"O"
A signal is provided (read mode). Note that the signal obtained at the terminal T2 of the control circuit 7 is supplied to the other input terminal of the OR gate 9. The selector 11 has the same configuration as the selector 4 described above, and its input terminal has an address designation. The output of the section 12 is supplied, the data obtained at the terminal T3 of the control circuit 7 is supplied to the input terminal 1, and the output is supplied to the address terminal D of the memory 5. It is used to specify an address in the write mode of the memory 5, and is composed of a numeric keypad 12& for specifying the address, and a register 12b that temporarily stores data output from the numeric keypad 12&.

Next, reference numeral 15 is a magnetic card (external storage medium) on which a plurality of tone data and clock pulses are stored in advance. When this magnetic card 15 is inserted through an insertion slot provided at a predetermined position of the electronic musical instrument, the card sensor 16 detects this and outputs a detection signal MO to the motor control circuit 17 and the terminal -r4 of the control circuit 7. Motor control circuit 17
When the detection signal No is supplied to the The clock pulse 01 is output from the frequency oscillator 22 and is synchronized with the clock pulse 01.
It is carried out in synchronization with. The read head 19 is for reading the tone data and clock pulse λ written on the magnetic card 15 when the card 15 is transported, and its output is supplied to the input terminal B of the selector 4 and the clock detection circuit 20. be done. Further, the write head 21' is used to fold tone data and four pulses into the magnetic card 15 when the card 15 is conveyed. timbre data and output from the low frequency oscillator 22,
A lock pulser 1 is also supplied. Low frequency oscillator 22
is a circuit that generates the above-mentioned four clock pulses 1 for magnetic card writing, and this clock pulse 52+1 is supplied to the write head 21 and the motor control circuit 17, as well as to the terminal T5 of the control circuit 7. . The clock detection circuit 20 detects clock pulses from the output of the read head 19 and supplies them as clock pulses 2 to the control circuit 7.

Next, details of the control circuit 7 will be explained with reference to FIG.

In FIG. 2, reference numeral 25 indicates cresciendo pedal 20.
It is a variable resistor whose slider is driven by
One terminal is grounded, and the other terminal is supplied with a positive voltage (+V). Then, when the crescendo end pedal 20 is depressed all at once, a positive voltage +V is output from the slider of the variable resistor 25, and is outputted via the terminal -rl.
X) (analeg/digital) is supplied to the converter 27,
Furthermore, when you take your foot off the Cressie red pedal 26, a voltage of 0 is output from the slider of the variable i resistor 25, and
It is supplied to converter 27. 1) The converter 27 converts the voltage obtained across the variable resistor 25, that is, the voltage corresponding to the amount of depression of the crescendo end pedal 26, into digital data and supplies it to the input terminal of the comparator 28. .

The counter 29 counts the signal supplied to the corresponding terminal uK, and its count output is sent to the comparator 2.
8 input terminal 1 and terminal T, ! ! supplied to, and
When the @l" signal is supplied to the reset terminal R, it is reset. The comparator 28 compares the data supplied to its input terminal A with the data supplied to its input terminal 1, and when the two match, Then, a match signal I Q (@l'' signal) is output. This coincidence signal IQ is supplied to one input terminal of the AND gate 30, the reset terminal R of the 7-lip-flop circuit 31, and the load terminal of the latch clear.

On the other hand, the changeover switches 55'-15g are used to select one of the four operating modes of this electronic musical instrument, namely: (1) a mode in which music is played using the keyboard 1 (referred to as play mode); A mode for writing stored tone data to the memory 5 (referred to as load mode), (8) a mode for writing the tone data in the memory 5 to the magnetic card 15 (referred to as storage mode), (4) Tone setting switch 81 -8h is a switch for specifying the mode (referred to as switch write mode) in which tone data is written to the memory 5, and each selector switch 35
11''' signal is supplied to one terminal of each of ~38,
The signals obtained at the other terminal are each supplied to a priority circuit 39. The priority circuit 39 is a circuit that determines the priority order of the changeover switches a5-Las. That is, changeover switch 3
5 is on, the @1'' signal is output only from the output terminal Q1 of the priority circuit 39 regardless of whether the changeover switches 36 to 38 are on or off, and when the changeover switch 35 is off and the changeover switch 36 is on, If so, selector switch 37
．． Regardless of whether the switch 38 is on or off, the @1'' signal is output only from the output terminal Q2, and when the changeover switches 35 and 36 are off and the changeover switch 37 is on, the changeover switch 38
Regardless of whether the output terminal is on or off, the output terminal Q3
1" signal is output, and the changeover switches 35 to 371
is off and the selector switch 38 is on, the output terminal q
The @1" signal is output only from the output terminal Q4. Furthermore, when the changeover switches 35 to 38 are switched, the priority circuit 39 outputs a signal 1c7 (@l" signal) from the output terminal Q5.

The decoder 42 decodes the tone data (output from the memory 5) supplied via the terminal T1 and supplies it to the flip-flop circuit 31. The flip-flop circuit 31 is one R-87 flip-flop (hereinafter abbreviated as 11).
Each circuit 71 is a decoder 42.
All 11's are reset by the coincidence signal 1°. The latch 32 is a one-bit latch, and when the match signal IQ is supplied to its load terminal, it doubles each yy output of the flip-flop circuit 31, and outputs the output (OR) of R1-Rn via the terminal T8. Supplied to each other terminal. Each of the 11 flip-flop circuits 31 described above is reset after the latch operation of the latch 32 is completed.

Next, the operation of the electronic musical instrument having the above configuration will be explained separately for the four operation modes described above.

(1) Play mode This operating value is used when the performer plays a piece of music using the keyboard 1. Hereinafter, (&) When the clock end pedal 26 is not used, (b) Clock end pedal 2
6 is used (→ When the clock end pedal 26 is not used) In this case, first, the selector switch 35 is turned on.

As a result, the m1'' signal is output from the output terminal Ql of the priority circuit 39, and is supplied to each input terminal of the AND gates 4.5 and 30, and both the AND gates 45 and 30 are opened. When the counter 29 becomes open, the clock pulse $5 supplied to the other input terminal of the counter 29 passes through the gate 45 and the OR gate 46.
The clock terminal is supplied to the quantizer. Note that the clock pulse fl is the basic clock pulse of this electronic musical instrument.

Next, set the desired tone using the tone setting switch 81%8m. Now, for example, when setting switches 82 and B5 are turned on, OR gates R2 and R5 are turned on.
The ``'' signal is supplied to one input terminal of each of the input terminals. In this case, the @0'' signal is supplied to each other input terminal of ORG)R1-Rn for the reason described later. Therefore, the @l signal is supplied to each one of the input terminals of ORG)-iR2, “When the signal is supplied, the OR gate iL2.1
Only the output of 5 becomes the @1" signal, and as a result, the gate circuit G2, a becomes open. In this state, when a key on the keyboard 1 is operated, the tone generator 'l'G
2. The musical tone signal formed by Te3 is sent to the gate circuit G.
The signal is supplied to the sound system 2 via 1 and 'G, and is produced as a musical tone.

In addition, @ol is connected to each other terminal of OR gates R1 to R0.
The reason why the 'l signal is supplied is as follows.

That is, when the clock end pedal 26 is not used (when the foot is also released from the pedal 26), the output of the M/D converter 27 in FIG. A is supplied to the input terminal of . As a result,
When the count output of the counter 29 becomes (, the comparator 28
A coincidence signal ICCl is outputted from , and is supplied to the reset terminal R of the counter 29 via the AND gate 30 and the OR gate 47 . As a result, from then on, the match signal IQ is continuously output from the comparator 28, all 11 of the flip-flop circuits 31 are in the reset state, and each bit output of the latch 32 becomes a 10'' signal.

(b) When using the clock end pedal In this case, all tone setting switches 81 to am are turned off in advance. In addition, similarly to the case described above, the changeover switch 35
is turned on. As a result, the @1'' signal is output from the output terminal Q1 of the priority circuit 39, and the output terminals Q2 to q4
When the 11'' signal is output from the output terminal Q1 of the priority circuit 39, the clock pulse 3 is supplied to the clock terminal OK of the counter 29, and the AND gate 30 is opened. state. The @0'' signal is output from the output terminal q2, and the OR gate 9 is output via the terminal ?2.
(Fig. 1), the memory 5
A ``0'' signal is supplied to terminal W/R of (read mode). In addition, in the play mode using this crescendo pedal, the push button switch 8 is not pressed. When the @0'' signal is output from the output terminal Q4 of the priority circuit 39 and supplied to the control terminal C of the selector 11 via the terminal T9, the input terminal 1 of the selector 11
The data obtained at the time, ie, the count output of the counter 29, is supplied to the address terminal AD of the memory 6. In this case, the tone data is written in the memory 5 in advance.
It is assumed that there is

In the above situation, if the performer presses the cresciendo pedal 2
6 is depressed by a certain amount, and as a result, the output of the MU/D converter 27 becomes "JIN", the comparator 28 outputs a match number 11Q every time the count output of the counter 29 becomes a circle, and this match Counter 29 is reset by signal IQ. That is, in this case, the counter 29 circulates and outputs count outputs A to COUNT. Then, this count output (~country) is sequentially supplied to the address terminal Mof of the memory 5 via the terminal T5 and the selector 11tt.As a result, the tone data in addresses 0 to 4 of the memory 5 are sequentially read out. (The terminal W/R of the memory 5 is supplied with a ``0'' signal and is in read mode), is output from the output terminal Q, and is supplied to the decone 42 via the terminal T1, and the 4° decoder 42 The sequentially supplied tone color data is decoded and sequentially supplied to the flip-flop circuit 31. Thereby, the IFF corresponding to the tone data supplied to the decoder 42 is set. Tone setting switch S2.85%s6%s9,8 at address 4
Assuming that tone data corresponding to 11 is stored,
By supplying these tone data to the decoder 42, the second, fifth, sixth,
The 9th% 1111th FT is set. When the outputs of the flip-flop circuits 111 of the flip-flop circuits 81 are read into the latch 32 by the match signal FQ and supplied to the other input terminals of the OR gates R1 to Rn via the terminal T8, the OR gates R2, R5, R6, The outputs of R9 and ill are respectively ''l'' signals, and the gate circuits G2, G, G6, G
9. Gll becomes open. Therefore, when the keys on keyboard 1 are operated, tone generators TG2 and Ta2 are activated.
, Te3, T G 9 , the musical tone signal formed by the plate 1 is sounded by the sound system 2 .

(2) Load Mode This operation mode is a mode in which tone data stored in advance on the magnetic card 15 is written into the memory 5. In this case, first, only the changeover switch 36 is turned on. Accordingly, the @1” signal from the output terminal Q2 of the priority circuit 39,
Output terminal Q1. Ql.

@0'' signal is output from Q Todoroki. @ from output terminal q1
When a 0" signal is output, both AND gates 45 and 30 are closed. When a 1" signal is output from output terminal q2, the AND gate 50 is opened and the terminal W/ of the memory 6 is output. The RC'"L" signal is supplied, and the memory 5 enters the write mode. When the @0" signal is output from the output terminal q5, the AND gate 51 is closed. The @0" signal is output from the output terminal q4, and goes to the selector and each of the 11 control terminals 0 via the terminal T9. When supplied, each input terminal B and each output terminal of the selector 4.11 are connected isometrically.

Next, when the magnetic card 15 is inserted into the insertion slot, the card sensor 16 detects this and sends a detection signal MC (@1" signal).
is output to terminal TA of motor control circuit 17 and control circuit 7, respectively. Detection signal MO to terminal T4 of control circuit 7
When the detection signal MO is supplied to the reset terminal R of the counter 29 through the OR gate 47, the counter 29 is reset. Furthermore, when the detection signal MO is supplied to the motor control circuit 17, the motor 18 is driven and the magnetic card 15 is transported into the electronic musical instrument. During this transportation, the tone color data and clock pulses stored in the magnetic card 15 are read by the reading head 19 and supplied to the clock detection circuit 20 and the input terminal B of the selector. Clock detection circuit 20 detects a clock pulse from the output of read head 19 and outputs it to terminal T6 of control circuit 7 as clock pulse $212. The four-pulse driver 2 supplied to the terminal T6 is connected to the current circuit through an AND gate 50 and an OR gate 4.6.
29 is supplied to the clock terminal OK.

Furthermore, the timbre data supplied to the input terminal B of the selector is supplied to the input terminal IN of the memory 60 via the selector. When the clock pulse 02 is supplied to the clock terminal OK of the counter 29, the count output of the color/return 29 is sequentially incremented in synchronization with the clock pulse 2, and this count output is transferred to the terminal T5 and the selector 1lf. - are sequentially supplied to the address terminal D of the memory 5. Thus, the tone data read by the magnetic head 19 is sequentially written into the memory 5 starting from address O.

(3) Recording mode This operation mode is a mode in which the contents of the memory 5 are written to the magnetic card 15. In this case, first, selector switch 37
ON state only. In this case, the output terminals q1, q2, q4 of the priority circuit 39 are °0'', and the output terminal C1 is @1.
As a result, each part of the circuit becomes in the following state. That is, first, the AND gates 45 and 50.30 are closed, and the AND gate 51 is open. Also, the terminal W/R of the memory 5 Since the "0" signal is supplied to the selector 11, the memory 5 enters the read mode. Also, since the "0" signal is supplied to the controller ρ terminal 0 of the selector 11, the output of the counter 29 is supplied to the selector 11. is supplied to the address terminal AD of the memory 5 via the address terminal AD. Note that the output of the selector 4 has no effect on the circuit operation since the memory 5 is in the read mode.

Next, when the magnetic card 15 is inserted from the insertion slot, the card sensor 16
A detection signal MO is output from the counter 2, and the counter 2
9 is reset, and the motor 18 is also driven. The magnetic card 15 is then conveyed into the electronic musical instrument by the motor 18.

On the other hand, in this case, the clock pulse door 1 is supplied to the clock terminal box of the counter 29 via the terminal T5, the AND gate 51, and the OR gate 46, respectively. Therefore, from the time when the counter 29 is reset, the count output of the counter 29 is incremented every time the clock pulse 1 is output, and this count output field, [clock, plate...] is selected by the selector. 11 to the address terminal AD of the memory 5. Then, the above count is output to the address terminal D of the memory 5.
When the leap... is sequentially supplied, the tone data in addresses 0, 1, 2, etc. of the memory 5 are sequentially read out, and are sequentially sent to the write head 21 along with the clock pulse 1. Supplied. As a result, the tone data and clock pulse gl in the memory 5 are sequentially written onto the magnetic card 15 which is being transported into the electronic musical instrument.

(4) Switch writing mode This operation mode is a mode in which tone data is written into the memory 6 by the tone setting switches 81 to 8n. In this case, first, only the changeover switch 38 is turned on.

With this, the other input terminal of the OR gate 9 (Fig. 1)
The flaw signal is supplied, and the @1'' signal is also supplied to each control terminal C of the selector main and 11.
When the signal ``'' is supplied to each control terminal C of the selector 4, 11, each input terminal and each output terminal of the selector 4, 11 are automatically connected.

Next, the user writes the ridge into the register 12b using the numeric keypad 121. Accordingly, the data is supplied to the address terminal AD of the memory 5 via the selector 11. Next, when writing corresponding tone color data to the tone color setting switch B2 at address 0 of the memory 5, for example, only the switch S2 is turned on. This causes encoder 3 to switch S2.
Tone color data corresponding to is output and supplied to the input terminal IN of the memory 5. Next, press the pushbutton switch 8 for a short time. , thereby, ``1'' to terminal W/R of memory 5.
1" is signaled (write mode), resulting in 0 of memory 5.
Tone color data corresponding to the tone color setting switch s2 is written into the address. This completes the writing of data in address 0 of the memory 4.

Next, write "view" in the register 12b using the numeric keypad 12&, then turn off the tone setting switch S2, turn on the tone setting switch 85, for example, and press the pushbutton switch 8 for a short time. , memory 5
The timbre data corresponding to the timbre setting switch S5 is written into address 1 of . Thereafter, data is written into the memory 5 in the same manner.

In the above-described embodiment, the data written to the memory 5 is timbre data, but data regarding effects (for example, vibrato, tremolo, etc.) may be written into the memory 5 together with the timbre data.

As explained in detail above, according to the present invention, a means for reading data stored in an external storage medium (for example, the magnetic card 15 in the above embodiment) and writing it to the memory is provided, so that data writing to the memory is possible. This has the advantage that it can be done in an extremely short time.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.
FIG. 2 is a block diagram showing details of the control circuit 7 in the same embodiment. 1... Keyboard, 2... Sound system, 5... Memory, 7... Control circuit, 15...
- Magnetic card (external storage medium), 16... Card sensor, 17... Motor control circuit, 18...
...Motor, 19...Reading head, 20...
... Clock detection circuit, 22 ... Low frequency oscillator,
26... Cresciendo pedal, 'J'G1~T
Gn...Tone generator, Gl-Gn...
...Gate circuit.

Claims (1)

[Claims] In an electronic musical instrument configured such that data is read from a memo 0 according to the amount of operation of a cressi end pedal, and a sound collection signal is formed based on the read data,
An electronic musical instrument comprising means for reading data stored in an external storage medium and writing it to the meso.