JPH0360119B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic performance machine (for example, an electronic organ with an automatic performance function, an automatic rhythm device, an automatic bass chord device, an automatic arpeggio device) that determines the tempo of a performance piece based on a tempo clock. The present invention relates to a tempo control device for a music performance, and more particularly to a device that can set the frequency of a tempo clock to a desired value in conjunction with the normal clapping motion of a person during a music performance.

The present applicant has previously proposed various types of automatic performance machines (for example, an electronic organ with an automatic performance function, an autorhythm device, an auto bass chord device, an auto arpeggio device, etc.). The performance tempo of these automatic musical instruments is determined in synchronization with a clock signal called a tempo clock, and therefore, the performance tempo can be arbitrarily changed by changing the frequency of this tempo clock.

Conventionally, in order to change the performance tempo, a voltage-controlled color generator (hereinafter referred to as VCO), for example, was employed as a tempo clock oscillator, and a control voltage for this was applied via a sliding or rotary variable resistor. The frequency of the tempo clock can be continuously changed by sliding or rotating the operator of the variable resistor.

However, as is well known, the actions that people usually take or give instructions during musical performances include clapping hands, stomping feet, shaking a baton, banging on a desk, etc., or using a metronome, etc. This is far from the sliding or rotating operation of the controls on an automatic musical instrument, and in fact, it is extremely difficult to quickly and accurately set the playing tempo to a desired tempo during performance using such sliding or rotating operations. I have to say that it is.

This invention was devised in view of the above-mentioned difficulties in setting the tempo of conventional automatic musical instruments, and its purpose is to enable a person to set the playing tempo on this type of automatic musical instrument in a way that would not normally be possible. The purpose is to make it possible to change the tempo to any desired one by taking the time signature.

The present invention will be described in detail below based on examples.

Fig. 1 is an overall block circuit diagram showing the case where the present invention is applied to an electronic organ with an automatic performance function as an example of an automatic performance machine, and Fig. 2 shows a tempo clock generation control circuit which is the main part of the present invention. 3 is a diagram showing the data format in the data memory, FIGS. 4, 5, and 6 are structural diagrams each showing an example of the tempo setting pulse generating means, and FIG. 7 is a diagram showing the data format in the data memory. , is a timing chart showing the temporal relationship of each signal in the tempo clock generation control circuit.

In Figure 1, 1 is the key switch group of the upper keyboard (UK), 2 is the key switch group of the lower keyboard (LK),
3 indicates key switch groups of a pedal keyboard (PK), and each key code generated from these key switch groups 1, 2, and 3 is transmitted through a melody sound generation circuit 4, an accompaniment sound generation circuit 5, and a bass sound generation circuit 6. Each of the signals is converted into a musical tone signal and outputted as a musical tone via a sound system 7 consisting of a main amplifier, speakers, etc.

Reference numeral 8 denotes a pattern memory for storing rhythm patterns, and in this pattern memory 8 there are, for example, 128 addresses that are sequentially addressed by the output of an address counter 9 whose advance is controlled by a tempo clock TCL, which will be described later. , the memory content of each address corresponds to whether or not a rhythm sound is produced in each section where the time length of two measures is equally divided into 1/128. Therefore, when the address counter 9 increments in synchronization with the tempo clock TCL, a rhythm timing signal is output from the pattern memory 8, and this signal is converted into a rhythm sound signal via the rhythm sound source 10.
is output as a rhythm sound.

Next, reference numeral 11 is a memory in which various performance data are stored (hereinafter referred to as data memory). In this example, the data memory 11 uses RAM so that it can be rewritten according to the desired song number. As shown in the figure, a system is adopted in which performance data is magnetically recorded along the lower part of the musical score 12, and is scanned and read by a performance data reading device 13, and written into the data memory 11.

On the other hand, performance data, as the name suggests, refers to various data necessary for performance.In this embodiment, performance data includes a note code representing the note name of the key to be pressed in the UK, and an octave representing the octave to which the note belongs. chord, note length code that represents the length of the note, root note code that represents the root note of the chord to be played with LK, type of chord (for example,
Major, Minor, 7th, Minor 7th, etc.) Type code indicating the end of the song
It consists of a FINISH code and an identification code that identifies these various codes. .

Each of the encoded performance data is stored at each address in the data memory 11 according to a predetermined format, as shown in FIG. That is, each address in the data memory 11 has a storage capacity of 8 bits, and the contents of each address marked "UK", "LK", "note length", and "FINISH" in the figure are indicated by the arrows in the figure. It is structured as follows.

(i) "UK"; the upper two bits b ₁ and b ₂ store an identification code "10" indicating that the data is related to the UK. UK for 3rd and 4th bits b ₃ and b ₄
An octave code indicating the octave to which the note to be pressed belongs is stored. In this octave code, for example, the first to fourth octaves correspond to 2-bit binary codes "00" to "11". The 5th to 8th bits _b5 to _b8 contain note codes indicating the note names (notes) to be played in UK.
It is stored in bit binary code. For example, the 12 tones of C, C#, D, D#...A#, B are made to correspond to the binary codes "0001" to "1100".

(ii) "LK"; the upper two bits b ₁ and b ₂ store an identification code "01" indicating that the data is related to LK. LK for 3rd and 4th bits b ₃ and b ₄
The type of chord you should type (for example, Major,
Minor, 7th, Minor 7th) is stored. In this example, Major "00",
There is a relationship between Minor "01", 7th "10", and Minor 7th "11". In the fifth to eighth bits _b5 to _b8 , a root note code indicating the root note of the above code is stored. In this example, the 12 root tones of C, C#, and -B are made to correspond to the 4-bit binary code "0000" to "1011."

(iii) “Note length”; the upper two bits b ₁ and b ₂ contain an identification code “00” indicating that the data is related to note length.
is memorized. The 3rd to 8th bits _b3 to _b8 contain a tempo clock corresponding to 1/64th of a whole note.
A note length code is recorded that indicates the note length using the TCL count value.

(iv) "FINISH": The first to eighth bits store an end code "11111111" indicating the end of the song.

(v) Others; UK identification code “10” is stored in the first and second bits b ₁ and b ₂ , and the third to eighth bits b ₃
Setting all the values of ~ _b8 to 0 indicates a UK rest, and storing the note length code in the 3rd to 8th bits _b3 to _b8 of the following note length address indicates a rest. It shows the length of.

In the above configuration, when the power is turned on, the initial clear circuit (not shown) is driven and the initial clear pulse IC is sent to the RS via the OR gate 14.
Flip-flop (hereinafter simply referred to as RSFF)
15, and its output "1" resets the address counter 16 to the first address. Further, the initial clear pulse IC is also supplied to the reset input R of the RSFF 19 via the OR gate 18 to disable the AND gate 20.

Next, when the start switch 21 is closed, a start pulse SS is outputted from the differentiating circuit 22 in synchronization with the rise of its output. This start pulse SS is supplied to the set input S of the RSFF19, and its Q output "1" releases the inhibition of the AND gate 20, and the output is passed through the OR gate 23.
It is also supplied to the reset input R of RSFF24, and its Q
The AND gate 25 is inhibited by the output "0". Furthermore, the start pulse SS is also supplied to the set input S of RSFF15, and its output "0" enables the address counter 16 to increment, and the start pulse SS is supplied to the set input S of RSFF27 via the OR gate 26. It is also supplied to the input S, and the address counter 9 for the pattern memory 8 is reset by its Q output "1".

Next, a tempo setting pulse generator 28, which will be described later,
Tempo setting pulse ON that occurs with the operation of
is passed through AND gate 20 and OR gate 29
When supplied to the set input of RSFF24, its Q output "1" disables the AND gate 25, and the dress counter 16 starts incrementing in response to the clock φ, and this tempo setting pulse is turned ON.
is also supplied to the reset input R of RSFF27, and its Q output "0" enables the address counter 9 to advance, and from then on, the tempo clock (described later)
The TCL begins to be counted, and accordingly, the pattern memory 8 outputs a rhythm timing signal in time series as described above, which is converted into a rhythm sound via the rhythm sound source 10 and the sound system 7. In addition, the tempo setting pulse ON is applied to a D-type flip-flop (hereinafter simply DFF) via an AND gate 20.
) 17, and after being delayed, it is supplied to the reset input R of the RSRR 19 via an OR gate 18. As a result, the Q output of RSFF19 becomes “0”, and the AND gate 20 receives the start pulse.
Banned until SS occurs again. This means that
This is because it is necessary to start the address counter 16 with the first pulse of the tempo setting pulse ON, and to prevent the address counter 16 from incrementing with subsequent pulses.

When the address counter 16 starts incrementing, the data contents of each address of the first data group marked with "UK", "LK", and "note length" in FIG. When the UK, LK, and note length identification codes are present in the upper two bits of the data that is output in parallel and read out sequentially, the UK code detection circuit 31, LK code detection circuit 32, and note length code detection circuit 33 are activated separately. The latch circuit 34 latches the lower six bits of the UK data, the latch circuit 35 latches the lower six bits of the LK data, and the latch circuit 36 latches the lower six bits of the code length data. and,
When the note length data is latched in the latch circuit 36,
The detection output “1” of the note length code detection circuit 33 is OR
It is supplied to the reset input of RSFF24 via gate 23, and its Q output "0" inhibits AND gate 25, and the address counter 16 stops advancing, and furthermore, this detection output "1"
The counter 37 is reset by this, and the counter 37 starts counting the tempo clock TCL. When the count value of the counter 37 and the note length code latched in the latch circuit 36 match, the match output EQ of the comparison circuit 38 becomes "0".
The signal changes from "1" to "1", and in synchronization with the rising edge, a coincidence pulse EP is outputted from the differentiating circuit 39. This coincidence pulse EP is passed through OR gate 29 to RSFF24
Its Q output "0" disables the AND gate 25, and the address counter 16 resumes incrementing in response to the clock φ. Then, the address counter 16 starts incrementing again. The contents of the second data group shown in FIG. 3 are sequentially read onto the common bus 30, and the latch circuit 34 latches the UK code and the latch circuit 36 latches the note length code in the same manner as described above. At this time, since there is no LK data in the second data group as shown in FIG. 3, the data content of the latch circuit 35 is the same as in the previous data group.
The contents of the LK code will remain. Then, at the same time that the note length code is latched in the latch circuit 36, the address counter 1 is
6 is stopped, and on the other hand, the counter 37 starts counting the tempo clock TCL, and when the counted value matches the note length code latched in the latch circuit 36, the third data group is started in the same manner as described above. Each data group is read out onto the common bus 30, and each time the count value of the counter 37 and the code length code of the latch circuit 36 match, each data group is sequentially sent out onto the common bus and each latch is read out onto the common bus. Circuit 34-3
It will be latched at 6. At this time, the latch circuits 34 and 35 are latched one after another.
The latched period of each UK and LK chord is determined by the note length code included in the data group to which each chord belongs, and as mentioned above, this note length code represents the length of the note based on the tempo clock TCL. Since the latch circuits 34 and 35
In this case, the UK chord and LK chord will be latched with their respective timings and lengths.

Next, when the FINISH code "11111111" is read out while repeating the reading of each data group, the detection output "1" of the FINISH code detection circuit 40 is supplied to the reset input R of the RSFF 15 via the OR gate 14. , the address counter 16 is reset to the predetermined starting address again by the output "1".

On the other hand, the UK chord (octave chord + note chord) latched by the latch circuit 34 is automatically
After being decoded by the decoder 42 enabled by the UK performance switch 41, it is supplied to the melody sound generation circuit 43, and the melody sound generation circuit 43 outputs a melody sound signal, and this melody sound signal is further used as a sound. It is output as a melody sound via the system 7.

Furthermore, the LK code (type code + root note code) latched by the latch circuit 35 is decoded by the decoder enabled by the automatic LK performance switch 44.
After being decoded into note codes constituting a chord via the ROM 45, they are supplied to an accompaniment sound generation circuit 46, which outputs an accompaniment tone signal, and this accompaniment tone signal is further converted into a sound. It is output as accompaniment sound via the system 7.

Thus, according to this electronic organ, score 12
After setting it in the reading device 13, turn on the power,
By operating the start switch 21, tempo pulse setting pulse generator 28, and turning on the automatic UK performance switch 41, automatic LK performance switch 44, and automatic rhythm performance switch 10a, the sound system 7 will play the song written in the musical score. is automatically played with melody, accompaniment, and rhythm sounds, and the tempo of the song being played is determined based on the frequency of the tempo clock TCL. The lower the frequency of the tempo clock TCL, the slower it will be.

Particularly in this invention, the frequency of the tempo clock TCL can be quickly and reliably set to an arbitrary value by controlling the operation timing of the tempo setting pulse generator 28.

That is, first, some specific examples of the tempo setting pulse generator 28 will be explained with reference to FIGS. 4, 5, 6A, and 6B.

Figure 4 shows that in consideration of the fact that during music performances, people usually use actions such as stepping, clapping their hands, or tapping their desks to set the time signature of a piece of music or give instructions. It is configured so that a pulse synchronized with the timing can be generated by the operation accompanied by the timing.
In the illustrated example, contacts 48 are provided on a rigid substrate 47.
a, 48b are placed facing each other, and above them, an impact plate 49 made of a flexible plate is placed facing each other with an appropriate gap therebetween, and a conductive plate 50 for contact conduction is fixed to the lower surface of the shock plate 49. By hitting the impact plate 49 with your hand or a stick,
Alternatively, by stepping on the shock plate 49, conduction can be established between the contacts 48a and 48b, and a differentiation circuit 51 detects the rise of the output from "0" to "1" as the contacts open and close.
This pulse is detected and converted into a pulse, and this pulse is configured to turn on the above-mentioned tempo setting pulse.

Fig. 5 is based on the fact that when a person normally performs music, in order to set the time signature of a piece of music or give instructions, a person performs a shaking motion such as shaking a baton.
It is configured so that a pulse can be generated in synchronization with the timing of such a rocking operation, and in the illustrated example, a hollow space 53 extending in the axial direction is formed in a rod-shaped member 52 such as a baton, and One contact piece 54 is attached to the inner end surface on the tip side of the space.
Also, facing this and normally biased backward via a spring 55, the rocking motion (arrow)
The other contact member 56 is built in so as to protrude toward the distal end side due to the centrifugal force accompanying the movement of the contact member 56, and a transmitting device 57 is also provided to transmit an electrical signal on a carrier wave as the contacts 54 and 56 open and close. Built-in,
On the other hand, on the electronic organ main body side, there is a receiving device 58 to receive this and a received switching signal "0".
A differentiation circuit 59 is provided to detect the rise from "1" to "1", and with this, the tempo during automatic performance of the electronic organ can be arbitrarily set by simply performing an action similar to shaking a baton from a point away from the electronic organ. It is configured so that it can be done.

Figures 6A and 6B show that pulses are generated in synchronization with the metronome's swing, considering that when a person normally takes the time signature of a piece of music during a musical performance, they often synchronize with the metronome's pendulum. In the illustrated example, the light emitter 62 and the light receiver 63 are placed opposite to each other across the swing trajectory of the pendulum 61 of the metronome 60, and the pendulum 6
Based on the interruption between the light emitter and receiver 62 and 63 due to the swing of 1, the rising edge of the pulse obtained from the light receiver 63 is detected via the differentiating circuit 64 and converted into a minute width pulse. It is configured so that the tempo setting pulse is turned on.

In this way, various configurations can be adopted as the tempo setting pulse generator 28, and in short, the tempo setting pulse generator 28 can be implemented by an action that a person normally performs when setting the beat of music, or an instrument that a person normally uses when setting the beat of music. A tempo pulse is generated in synchronization with the timing of the operation of a metronome (for example, a metronome). The tempo setting pulse ON output from the tempo setting pulse generator 28 is supplied as a control input to the tempo clock generation control circuit 65 as shown in FIG. Tempo clock with frequency according to ON frequency
TCL will be output. That is, if the frequency of the tempo setting pulse ON is high, the frequency of the tempo clock TCL will also be high, and conversely, if the frequency of the tempo setting pulse ON is low, the frequency of the tempo clock TCL will also be low.

FIG. 2 is a block circuit diagram showing a specific example of the above-mentioned tempo clock generation control circuit 65, and the operation of this circuit will be explained below with reference to the timing chart of FIG. 7.

First, to briefly explain the functions of the main blocks that make up this circuit, 66 is a tolerance range setter, and its function is to set the tolerance range when taking in the tempo setting pulse ON as a control input. . That is, the tolerance range setter 66
A standard tempo setting device 67 is provided for setting whether the standard tempo is a quarter note or an eighth note.
and a tempo variable range setting device 68 for setting the range above and below the standard tempo set by the standard tempo setting device 67 in which the tempo is to be varied. And in this example, “high”,
It has three setting buttons consisting of “medium” and “low”.
With the "Medium" setting, the tempo can be varied within equal widths above and below the reference tempo, and with the "High" setting, the variable range can be increased above (in the direction of becoming higher) than the reference tempo. On the other hand, it is possible to change the tempo by reducing the variable range below (lower direction) than the standard tempo, and furthermore, when set to "low", the tempo is variable below (lower direction) than the reference tempo. This makes it possible to vary the tempo by increasing the width and decreasing the variable width above (in the direction of increasing) the reference tempo. That is, the allowable range setter 66 outputs parallel data (range setting data) indicating the above-mentioned settings.

Reference numeral 69 is a data discrimination circuit that successively monitors the count value of a tempo counter 70 (to be described later), and at the same time when the count value falls within the range specified by the range setting data output from the tolerance range setter 66.
The EN output is configured to change from "0" to "1".

71 is an averaging circuit, and each input A, B, C
is configured to output the average value of the data supplied to it.

72 is a selector configured to selectively output data supplied to each input A, B;
When select input SA is “1”, the data supplied to input A is “1”, and select input SB is “1”
In this case, the data supplied to input B will be selected.

Reference numeral 73 denotes a tempo clock oscillator, which includes a reference oscillator whose oscillation frequency is switched in two steps by the reference tempo switching signal TCS outputted from the tolerance range setter 66, and a variable frequency dividing circuit that divides the output of this reference oscillator. The frequency dividing ratio of this variable frequency dividing circuit is set by the output of the selector 72.

Reference numeral 74 denotes a tempo setting device for manually setting the frequency of the tempo clock TCL to an arbitrary value without using the tempo setting pulse generator 28.

In the above configuration, if the tempo setting device (manual) 74 is used to first set the frequency of the tempo clock TCL to a desired value, and then the selector manual changeover switch 75 is closed, the tempo setting device (manual) 74 outputs an output signal. The setting data to be set is sent to the tempo clock oscillator 73 via the selector 72.
The oscillator 73 outputs a tempo clock TCL having a desired frequency. That is, according to this embodiment, when the manual selector switch 75 is closed, the tempo clock oscillator 73 generates a tempo clock TCL having a constant frequency, regardless of the operation timing of the tempo setting pulse generator 28. The frequency of this tempo clock TCL can also be varied by digital setting operation of the tempo setter 74.

Next, with the selector manual changeover switch 75 open, the start pulse SS accompanying the operation of the start switch 21 (see Figure 1) is activated.
When supplied to the reset input R of the RSFF76, its Q output "1" is supplied to the switching input SA of the selector 72 via OR gates 77 and 78, and as shown in the timing chart of FIG. In the same manner as in the above case, manual setting data from a tempo setter (manual) 74 is supplied to a tempo clock oscillator 73, and the oscillator 73 generates a tempo clock TCL of the frequency set by the tempo setter (manual) 74.

Next, when a tempo setting pulse ON is generated in synchronization with the operation timing of the tempo setting pulse generator 28, this tempo setting pulse ON is passed through an AND gate 20 and an OR gate 29 as shown in FIG.
It is supplied to the set input of RSFF24, and its Q output "1" disables the AND gate 25.
As already explained, the address counter 16 starts incrementing, and thereafter each piece of performance data is sequentially read out from the data memory 11 in synchronization with the tempo clock TCL through the process described above.

On the other hand, upon receiving the first tempo setting pulse ON output from the tempo setting pulse generator 28, the tempo counter 70 shown in FIG. 2 starts counting the clocks φ as shown in the timing chart of FIG. As soon as the numerical value falls within the tolerance range set by the tolerance range setter 66, the EN output of the discrimination circuit 69 rises from "0" to "1".
The ban on AND Gate 79 is lifted. Then, with the arrival of the next tempo setting pulse ON, the count value _T1 of the tempo counter 70 changes to the first latch circuit 80.
At the same time, upon receiving the same pulse ON, the tempo counter 70 is reset again, and the EN output of the discrimination circuit 69 also falls from "1" to "0", and the AND gate 79 becomes inhibited again.
Then, when the count value of the tempo counter 70 again falls within the tolerance range set by the tolerance range setter 66, the EN output of the discrimination circuit 69 rises from "0" to "1", and the AND gate 79 The ban will be lifted again. In this state, when the third setting pulse "ON" arrives, the data T ₁ latched in the first latch circuit 80 is transferred to the second latch circuit 81.
At the same time, the new count value _T2 of the tempo counter 70 is latched in the first latch circuit 80, and at the same time, the EN output of the discrimination circuit 69 becomes "0".
As a result, the AND gate 79 is inhibited again. Then, while repeating the above operation, four setting pulses ON arrive from the tempo setting pulse generator 28, and the inter-pulse periods T ₁ , T ₂ , and T ₃ are all specified by the tolerance range setting device 66. If it is within the tolerance range, the first, second, and third latch circuits 80, 81, 82
Period data representing the inter-pulse period T ₁ , T ₂ , T ₃ with reference to the period of the clock φ is latched, and the same set pulse
ON is a start pulse SS configured in advance to overflow with a count value of "3" via AND gate 79 and AND gate 83.
It is also supplied to the clock input CK of the initial tempo setting counter 84, which is reset by
By its overflow output C ₀ “1”
RSFF76 is set, and the output _C0 “1” is inverted via the inverter 85 and output to the AND gate 8.
3, and thereafter the initial tempo setting counter 84
Input of setting pulse ON to is prohibited. When RSFF76 is set, its output "0" passes through OR gate 78, is inverted to "1" by inverter 86, and is supplied to switching input SB of selector 72, and as a result is supplied to tempo clock oscillator 73. The data for frequency setting is
The manual setting data from the tempo setter 74 is switched to the output data from the averaging circuit 71. In other words, selector manual changeover switch 7
When the tempo pulse generator 28 is operated in the open state of 5, the tempo setter (manual) 74 is output from the tempo clock oscillator 73 until all three pieces of data necessary for the averaging operation in the averaging circuit 71 are prepared. A tempo clock TCL having a frequency specified by
At the same time as the latching is completed at 1 and 82, respectively, the tempo clock oscillator 73 automatically generates a tempo clock TCL having a frequency synchronized with the operation timing of the tempo setting pulse generator 28.

Thereafter, the tempo clock oscillator 73 outputs the first,
A tempo clock TCL having a frequency specified by the average value of the synchronization data latched in the second and third latch circuits 80, 81, and 82 is generated, and therefore the tempo setting pulse generator 28 is operated at a fast timing. When the frequency of the tempo setting pulse ON is increased, the frequency of the tempo clock TCL increases accordingly, and the automatic performance tempo of the electronic organ becomes faster.On the other hand, the tempo setting pulse generator 28 is operated at a slower timing and the tempo setting pulse is turned ON. If you lower the frequency of the tempo clock, the tempo clock will change accordingly.
The TCL frequency decreases and the electronic organ's automatic performance tempo becomes slower.

In addition, at this time, as in the case of the _sixth setting pulse ON shown in FIG. , it is still AND when the sixth tempo setting pulse ON arrives.
Since the gate 79 is in a prohibited state, even if the sixth tempo setting pulse ON arrives, the count value of the tempo counter 70 is not transferred to the first latch circuit 80, and therefore the first, second, The contents stored in each of the third latch circuits 80, 81, and 82 are maintained at the contents stored at the time when the fifth setting pulse ON arrives even after the arrival of the sixth setting pulse ON, and as shown in FIG. The data in each latch circuit 80, 81, 82 is updated for the first time only after waiting for the arrival of the seventh setting pulse ON, which is a normal pulse within the allowable range, as shown in FIG. Therefore, according to this embodiment, if, for example, an attempt is made to operate the tempo setting pulse generator at a fixed timing, the timing may be disturbed by mistake, and as a result, the interval between the ON setting pulses output from the tempo setting pulse generator 28 may become permissible. If it becomes shorter than the range,
The periodic data representing these pulse intervals is excluded from the data for averaging calculation in the averaging circuit 71, and as a result, the tempo clock output from the tempo clock oscillator 73
The frequency of TCL will be maintained stably despite the disturbance in the frequency of the tempo setting pulse ON.

Further, after the selector 72 switches to the averaging circuit 71 side, each of the first, second, and third latch circuits 8
If the memory contents of any one of 0, 81, and 82 are lost due to an unexpected malfunction, one of the outputs of NOR gates 86, 87, and 88 becomes "1", and this "1" signal OR gate 8
Switching input of selector 72 via 9 and 78 in order
The frequency setting data supplied to the SA and thereby the tempo clock oscillator 73 is again switched from the output data of the averaging circuit 71 to the setting data of the tempo setter (manual) 74. Therefore, according to this embodiment, the three latch circuits 80, 81,
82 is lost and the calculation result of the averaging circuit 71 changes significantly as a result, the frequency of the tempo clock TCL is returned to the setting value of the tempo setter (manual) 74. This ensures that the frequency of the tempo clock TCL does not fluctuate significantly due to the output of the averaging circuit 71.

Thus, according to the electronic organ with the automatic accompaniment function shown in the above embodiment, after the musical score 12 is set in the reading device 13 as shown in FIG. 41. If the accompaniment sound switch 44 and the rhythm sound switch 10a are selected and turned on as appropriate, then the start switch 21 is closed, and the tempo setting pulse generator 28 is operated at the timing with the selector manual changeover switch 75 in the open state. For example, in the case shown in FIG. 4, if the impact plate 49 is hit with a hand or a stick, or is stepped on, the calculation condition in the averaging circuit 71 shown in FIG. Standard tempo settings (for example,
quarter note, eighth note), and shock plate 4
An automatic performance sound will flow from the sound system at a tempo specified by the timing of hitting or stepping on the shock plate 49, and the tempo of the automatic performance sound will increase as you hit the shock plate 49 faster, and slow down as you hit it slower. , the permissible range can be arbitrarily set by the permissible range setter 66, and furthermore, if the memory contents of any of the latch circuits 80, 81, 82 are lost due to an unexpected situation as mentioned above, In addition, there is no risk that the tempo will fluctuate significantly even if the tempo is set by the tempo setting device (manual) by turning on the selector manual changeover switch 75. By operating the 90, it can also be used as a simple rhythm box.

Incidentally, in the above embodiment, the tempo setting pulse generator 28 is set to 3 as shown in FIGS. 4 to 6B.
Although only example No. 7 has been shown, if the impact plate 49 in the example shown in Fig. 4 is used as a contact detection plate of a touch switch, for example, the tempo can be indicated by a light touch with a fingertip, and various other configurations can also be adopted. Of course, it is possible to do this, and in short, in normal cases, when a person performs music, a pulse is generated in response to a timing action that indicates the tempo of a song, or a timing movement of some object that serves as a reference for the tempo during music performance. Any type of device that generates . Further, in the above embodiments, the case where the present invention is applied to an electronic organ with an automatic performance function has been described, but it goes without saying that the present invention is not limited to this, and various methods have been previously proposed by the applicant. The present invention can be widely used in various proposed automatic performance machines, such as autobeschord devices, autoarpeggio devices, and autorhythm devices.

As is clear from the above explanation, according to the present invention, the tempo setting operation of this type of automatic musical instrument, which was conventionally performed by operating a sliding or rotary resistor, etc., can be performed by a person in normal situations. The tempo can be set to any desired tempo by the action of taking the tempo, and the functionality of this type of automatic performance machine as a musical instrument can be significantly improved.

[Brief explanation of drawings]

FIG. 1 is an overall block circuit diagram showing the case where the present invention is applied to an electronic organ with an automatic performance function as an example of an automatic performance machine, and FIG. 2 is a block diagram showing a tempo clock generation control circuit, which is the main part of the present invention. The circuit diagram, Fig. 3 is a diagram showing the data format in the data memory, Fig. 4, Fig. 5, and Fig. 6A,
B is a structural diagram showing an example of the tempo setting pulse generating means, and FIG. 7 is a timing chart showing the temporal relationship of each signal in the tempo clock generation control circuit. 28... Tempo setting pulse generating means, 49,5
2, 61... external operator, 70... pulse interval measuring means, 71, 80-82... performance memory means, 73...
...Tempo clock generation means, TCL...Tempo clock.

Claims (1)

[Scope of Claims] 1. A tempo setting pulse generating means for generating a tempo pulse in synchronization with the timing of a human movement performed when setting the beat of music or an operation of an instrument used when setting the beat of music; pulse interval measuring means for measuring the time interval of tempo pulses outputted one after the other from the tempo setting pulse generating means; and storing a plurality of measurement results measured by the pulse interval measuring means as a plurality of tempo clock control data, respectively. A storage means, an averaging means for averaging a plurality of tempo clock control data stored in the storage means, and a tempo clock generation means for generating a tempo clock having a frequency according to the output of the averaging means. Features: Automatic performance machine tempo control device. 2. The tempo setting pulse generating means is connected via a wireless transmission means to the main body of an automatic performance machine incorporating the pulse interval measuring means, the storing means, the averaging means, and the tempo clock generating means. A tempo control device for an automatic musical instrument according to claim 1. 3. The automatic performance machine according to claim 1, wherein the tempo setting pulse generating means comprises an external operation plate and a switch that opens and closes by pressing or touching the external operation plate. tempo control device. 4. According to claim 1 or 2, the tempo setting pulse generating means is constituted by a switch that is built in a baton and opens and closes in response to a swinging operation of the baton. The tempo control device for the automatic musical instrument described above. 5. The automatic performance according to claim 1, wherein the tempo setting pulse generating means is comprised of a detection means for optically detecting the movement of an object that serves as a reference for the tempo during music performance. Machine tempo control device. 6. A tempo setting pulse generating means that generates a tempo pulse in synchronization with the timing of a human movement performed when setting the beat of music or an operation of an instrument used when setting the beat of music, and from the tempo setting pulse generating means. pulse interval measuring means for measuring the time interval between tempo pulses that are output in succession; tolerance setting means for setting a permissible range of the time interval between the tempo pulses; A storage means for extracting only those within the tolerance range set by the tolerance range setting means and storing them as tempo clock control data, and a tempo clock generation means for generating a tempo clock having a frequency according to the output of the storage means. A tempo control device for an automatic musical instrument characterized by: 7. A tempo setting pulse generating means that generates a tempo pulse in synchronization with the timing of a human movement performed when setting the beat of music or an operation of an instrument used when setting the beat of music, and from the tempo setting pulse generating means. pulse interval measuring means for measuring the time interval of tempo pulses output in succession; storage means for storing a plurality of measurement results measured by the pulse interval measuring means as a plurality of tempo clock control data; and the memory. averaging means for averaging a plurality of tempo clock control data stored in the means; tempo setting means for manually controlling and outputting setting data for setting the frequency of the tempo clock to an arbitrary value; and the tempo setting pulse. The number of tempo pulses output from the generating means is measured to determine the number of tempos required from the start of generation of tempo pulses by the tempo setting pulse generating means until all of the plurality of tempo clock control data are stored in the storage means. pulse number detection means for detecting that pulses are output from the tempo setting pulse generation means; and the pulse number detection means does not detect that the necessary number of tempo pulses are output from the tempo setting pulse generation means. selectively outputting setting data output from the tempo setting means;
and data selection means for selectively outputting tempo clock control data output from the averaging means when the pulse number detection means detects that the necessary number of tempo pulses have been output from the tempo setting pulse generation means. A tempo control device for an automatic musical instrument, comprising: tempo clock generating means for generating a tempo clock having a frequency corresponding to the data selected and output by the data selecting means. 8. A tempo setting pulse generating means that generates a tempo pulse in synchronization with the timing of a human movement performed when setting the beat of music or an operation of an instrument used when setting the beat of music; and the tempo setting pulse generating means. pulse interval measuring means for measuring the time interval of tempo pulses output one after another from said pulse interval measuring means; storage means for respectively storing a plurality of measurement results measured by said pulse interval measuring means as a plurality of tempo clock control data; an averaging means for averaging a plurality of pieces of tempo clock control data stored in a storage means; a tempo setting means for manually controlling and outputting setting data for setting the frequency of the tempo clock to an arbitrary value; storage detection means for detecting that all of the tempo clock control data are stored in the storage means; and the storage detection means detects that all of the plurality of tempo clock control data are stored in the storage means. When the tempo clock control data outputted from the averaging means is selectively outputted, and when the storage detection means does not detect that all of the plurality of tempo clock control data are stored in the storage means, the tempo clock control data is outputted from the tempo setting means. An automatic performance machine comprising: a data selection means for selectively outputting setting data to be output; and a tempo clock generation means for generating a tempo clock having a frequency according to the data selected and outputted by the data selection means. Tempo control device.