JPH02256096A - Tempo setter of automatic player - Google Patents

Abstract

PURPOSE:To allow the rapid and easy setting of the tempo corresponding to a desired tempo signature by controlling the frequency of a tempo clock signal according to the frequency control information from a converting means to the value corresponding to the tempo signature. CONSTITUTION:Reference voltages Va to Ve are outputted from a resistance type voltage divider 15 and are supplied respectively via analog switches 16a to 16e to a voltage control type oscillator 17. A variable resistor 28 is continuously changed in resistance value cooperatively with the rotation of a fine adjustment dial and outputs a voltage Vx. Any of the analog switches 16a to 16e turns on and the sum of any of the voltages Va to Ve and the voltage Vx is supplied as a control voltage Vc to the oscillator 17 when any of tempo signature selection switches 11a to 11e is turned on. The oscillator 17 outputs the tempo clock signal TCL of the frequency corresponding to the control voltage Vc. The tempo corresponding to the tempo signature of the turned on switch among the switches 11a to 11e to instantaneously set as the tempo of the automatic performance.

Description

[Detailed Description of the Invention] The present invention relates to a tempo setting device for an automatic musical instrument,
In particular, the present invention relates to a tempo setting device capable of indicating a performance tempo to be set using a tempo slogan.

The present applicant has previously proposed various automatic performance machines such as an autorhythm device, an auto arpeggio device, an auto bass chord (A, B, C) device, and a musical score data reading device. The tempo of automatic performance in these automatic performance machines is determined by a timing signal called a tempo clock signal.

Conventionally, in the performance tempo setting device for this type of automatic performance machine, the number of standard notes/1 is placed around the operation dial.
The performance tempo is graduated in units of "minutes" and the frequency of the tempo clock signal is configured to continuously increase or decrease as the operation dial is rotated.

However, when such a continuous frequency variable method is adopted, it is difficult to operate quickly when, for example, you want to change the tempo suddenly from a slow tempo to a fast tempo.
When only the tempo motto is displayed, such as LEGROJ, the tempo motto must be converted into a tempo numerical value, which is inconvenient for beginners.

The present invention was devised in view of the above-mentioned problems, and its purpose is to provide a tempo setting device that can quickly and easily set the tempo of automatic performance to a tempo corresponding to a desired tempo slogan. It's about doing.

The tempo setting device for an automatic musical instrument according to the present invention includes (a) an input means for inputting tempo motto identification information corresponding to a desired tempo motto; (b) tempo motto identification information inputted from the input means to (c) means for generating a tempo clock signal for automatic performance; (d) converting the frequency of the tempo clock signal according to the frequency control information from the converting means; and tempo control means for controlling the tempo to a value corresponding to the tempo motto.

In such a configuration, the input means may be a device for inputting tempo motto identification information through a tempo motto designation operation (for example, a tempo motto selection switch), or a device for inputting tempo motto identification information by voice (for example, a tempo motto selection switch). (a voice recognition device with a microphone).

According to the configuration of the present invention, by simply instructing a tempo motto such as "Allegro" by manual operation or voice, the tempo of the automatic performance is automatically set in accordance with the tempo motto specified.

The invention will now be described in detail with reference to embodiments shown in the accompanying drawings.

FIG. 1 shows an example of an automatic musical instrument to which the present invention is applied.

The illustrated device is an electronic keyboard instrument that is equipped with a musical score data reading device and is capable of automatic performance.The details of this device have already been filed in various applications by the applicant, so the entirety will be summarized here. I'll stop at explaining it.

In the musical score data memory 1, note names, chords, note lengths, etc. constituting the musical score of a piece of music to be automatically played are encoded and stored in the order of performance. Each of these encoded data is read out at a predetermined timing synchronized with the tempo clock signal TCL by the function of the readout control circuit 2, supplied to the musical tone forming circuit 3, and converted into a musical tone signal corresponding to the musical score. After this musical tone signal is amplified by the amplifier 4, it is output from the speaker 5, and thus, for example, an automatic performance of a melody is performed.

The keyboard 6 is composed of three keys including an upper keyboard, a lower keyboard, and a pedal, and key codes UKCLKC and PKC corresponding to the pressed keys are output in synchronization with the key pressing timing of each keyboard.

The musical tone forming circuit 7 receives each key code U output from the keyboard 6.
It forms and outputs musical tone signals corresponding to KC, LKC, and PKC. For example, it forms and outputs a manual melody sound signal according to a key code UKC, forms and outputs a manual chord sound signal according to a key code LKC, and outputs a manual melody sound signal according to a key code UKC. PKC
It forms and outputs a bass sound signal based on the foot operation.

The pattern generator 8 generates a timing signal T1 for auto arpeggio, auto chord, and auto bass based on the tempo clock signal TCL generated from the tempo clock generator 9, and also generates an auto rhythm based on the tempo clock signal TCL. It generates a timing signal T2 for this purpose.

The musical tone forming circuit 7 is capable of automatically forming an arpeggio tone signal, a chord tone signal, and a bass tone signal based on, for example, the chord base specified on the lower keyboard and the timing signal T1.

Further, the rhythm sound forming circuit 10 can automatically form a rhythm sound signal based on the timing signal T2.

In this way, this electronic keyboard instrument can play manual melody sounds, manual chord sounds, and bass sounds based on one foot operation, as well as automatic melody performance.

Various automatic performances such as automatic rhythm performance, automatic arpeggio performance, automatic bass chord performance, etc. are possible, and the tempo of these automatic performances is determined based on the tempo clock signal TCL output from the tempo clock generator 9.

Next, an example of the tempo clock generating device 9 (hereinafter referred to as the first embodiment) will be described with reference to FIGS. 2 and 3.

In Figure 2, lla to lie are tempo motto selection switches provided corresponding to the tempo mottos ``Alecro,''``Alebreto,''``Moderato,''``Andante,'' and ``Adagio,'' respectively, and 12 is a tempo motto selection switch for fine-tuning the tempo. A fine adjustment dial 13 is a numerical display device for numerically displaying the tempo as the number of quarter notes per minute, and these are provided, for example, in the clapperboard of an electronic keyboard instrument.

As shown in FIG.
A solid interlock has been established.

In the circuit shown in FIG. 3, five reference voltages Va, Vb, Vc, Vd, and Ve are output from the resistive voltage divider 15, and these reference voltages are sent to the voltage-controlled oscillator via analog switches 16a to 16e, respectively. (VCO) 17. Analog switches 16a to 16e receive ON signals (°°1″°) from switches lla to lie, respectively.
, is controlled to be turned on or off by an off signal (0'').

The variable resistor 18 is configured so that its resistance value changes continuously in conjunction with the rotation of the fine adjustment dial 12, and outputs a voltage VX. This voltage Vx is added to a reference voltage from one of the analog switches 16a to 16e and supplied to the oscillator 17 as a control voltage Vc.

That is, when one of the switches 1laNlla is turned on, any of the analog switches 15a to 16e is turned on in response, and the oscillator 17 receives voltages Va, Vb,
The sum of any one of Vc, Vd, and Ve and the voltage Vx (for example, Va+Vx) is supplied as the control voltage Vc.

The oscillator 17 is configured to output a tempo clock signal TCL having a frequency corresponding to the control voltage Vc, and the automatic performance tempo is determined by this tempo clock signal TCL. Table 1 shows the tempo setting range that can be adjusted using the fine adjustment dial 12 for each of the switches lla to lie. In Table 1, the tempo is expressed in quarter notes per minute.

Table 1 The same control voltage VC supplied to the oscillator 17 is A
/D converter 19 to a digital value D1, and this digital value D1 is sent to the conversion ROM 20 as an address signal.
supplied to. Tempo data (data representing the number of quarter notes per minute) TPD corresponding to each digital value D1 is stored in each address of the conversion ROM 20, and when the digital value D1 is supplied, the digital value D1 The conversion ROM 20 outputs tempo data TPD corresponding to the tempo data TPD.

This tempo data TPD is converted to display drive data DD via the display control circuit 21, and in response to this data DD, the tempo at that time is numerically displayed on the numerical display 13 as the number of quarter notes per minute. Ru.

According to the first embodiment described above, by simply turning on any of the switches lla to lie to which a tempo motto is attached, the tempo corresponding to the tempo motto of the turned-on switch is instantly set as the tempo for automatic performance. I can do it. Also,
(By operating the number dial 12, you can also precisely set the tempo to your liking based on the numerical display.

Next, another example of the tempo clock generating device (hereinafter referred to as a second embodiment) will be described with reference to FIGS. 4 and 5. still,
In FIGS. 4 and 5, the same components as those in the first embodiment are designated by the same reference numerals, and the explanation thereof will be omitted.

In FIG. 4, lla to 11e are tempo motto selection switches, 13 is a numerical value display, and 22 is a fine adjustment slider for finely adjusting the tempo. It is installed in the clapboard wood of board instruments, etc.

In FIG. 5, a variable frequency divider circuit 23 divides and outputs a high-speed clock signal HCL output from a reference oscillator 24, and this output becomes a tempo clock signal TCL.

When any of the switches lla to lie is turned on, the frequency division ratio memory 25 outputs frequency division ratio data Del corresponding to the turned on switch.

The multi-variable changeover switch 26 is configured to perform a switching operation in conjunction with the slide of the fine adjustment slider 22, and each switching output is supplied to an encoder 27. The encoder 27 corresponds to the switching operation from the center position (0) of the changeover switch 26 to the left or right, -1, -2, -3...
・Or +1. +2. Frequency division ratio fine adjustment data De2 corresponding to +3 . . . is output. The adder circuit 28 adds the frequency division ratio data Del outputted from the frequency division ratio memory 25 and the frequency division ratio fine adjustment data Dc2 outputted from the encoder 27 and outputs the result. This becomes ratio setting data Dc3.

The frequency division ratio setting data Dc3 is simultaneously supplied to the conversion ROM 29 as an address signal. Tempo data (data indicating the number of quarter notes per minute) TPD corresponding to each frequency division ratio setting data De3 is stored in each address of the conversion ROM 29, and when the digital value DC3 is supplied, the digital Tempo data TPD corresponding to the value De3 is output from the conversion ROM 29. This tempo data TPD is converted to display drive data DD via the display control circuit 21, and in response to this data DD, the tempo at that time is numerically displayed on the numerical display 13 as the number of quarter notes per minute. Ru.

Thus, in this second embodiment, the same effects as in the first embodiment can be obtained, and the automatic performance tempo can be indicated using a tempo slogan.

Next, still another example of the tempo clock generator (hereinafter referred to as the third embodiment) will be described with reference to FIGS. 6 and 7.

In FIGS. 6 and 7, the same reference numerals are given to the same components as those in the first or second embodiment, and the explanation thereof will be omitted.

In FIG. 6, 12 is a fine adjustment dial, 13 is a numerical value display, 30 is a motto display for displaying a tempo motto, 3
Reference numeral 1 denotes a microphone for detecting a uttered tempo motto, and these microphones are installed in the clapboard or the like of an electronic keyboard instrument.

In FIG. 7, the voice recognition device 32 is a microphone 31
It identifies each tempo slogan "Alecro", "Alebreto", etc. from the audio words inputted through the speech words, and outputs a digital signal D2 corresponding to each tempo slogan. This digital signal D2 is converted into an analog signal via the D/A conversion circuit 34.

The voltage-controlled oscillator 33 uses the sum of the output voltage 2 of the D/A conversion circuit 34 and the output voltage Vx of the fine adjustment variable resistor 18 as a control voltage Vc, and generates a high-speed clock signal HCL with a frequency corresponding to this control voltage Vc. Output. This high-speed clock signal HCL is further frequency-divided at a constant ratio via a frequency dividing circuit 35, and the frequency-divided output is the tempo clock signal TCL.
becomes.

The reference oscillator 36A outputs a reference clock signal φ having a sufficiently longer period than the high-speed clock signal HCL. The counter 36 counts the high speed clock signal HCL and is reset by the reference clock signal φ. The latch circuit 37 latches the count value of the counter 36 immediately before being reset each time the reference clock signal φ arrives. As a result,
The latch circuit 37 outputs tempo data TPD indicating the current tempo in terms of the number of quarter notes per minute. This tempo data TPD is then transmitted to the display control circuit 21.
In response to this data DD, the tempo at that time is numerically displayed on the numerical display 13 as the number of quarter notes per minute.

Furthermore, the output D2 of the voice recognition device 32 is output from the display control circuit 3.
Display drive data D corresponding to each tempo motto through 8
In response to this data DD2, the tempo motto is displayed in the alphabet on the motto display 30 as shown in FIG.

Thus, according to this third embodiment, if any tempo motto is correctly pronounced audibly, that tempo motto is displayed in the alphabet on the motto display 30, and the frequency of the tempo clock signal TCL is adjusted accordingly. Automatically set to the value corresponding to the tempo motto. Therefore, the third
The embodiment also makes it possible to indicate the tempo of automatic performance using a tempo motto.

In the third embodiment, if the numerical value display and the slogan display are made to differ in color, they can be more clearly distinguished and recognized.

As described above, according to the present invention, simply by specifying a tempo motto, the tempo for automatic performance is automatically set in accordance with the specified tempo motto, so that it is not possible to change the tempo value from the tempo motto as in the past. There is no need to perform conversion operations, and even beginners can easily and quickly enjoy automatic performance at a desired tempo.

Furthermore, beginners can immediately feel the performance tempo corresponding to each tempo motto, which has the advantage of making it easier to learn tempo mottos.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an example of an automatic musical instrument to which the present invention is applied, FIG. 2 is a plan view of the operating section according to the first embodiment of the present invention, and FIG. A block diagram showing the configuration, FIG. 4 is a plan view of the operation unit according to the second embodiment,
FIG. 5 is a block diagram showing the electrical configuration of the second embodiment, FIG. 6 is a plan view of the operating section according to the third embodiment, and FIG. 7 is a block diagram showing the electrical configuration of the third embodiment.
FIG. 2 is a block diagram showing the electrical configuration of an embodiment. 9... Tempo clock generator, lla~lie...
・Tempo motto selection switch, 15...resistive voltage divider,
15a-16e...Analog switch, 17.33.
...Voltage controlled oscillator, 23... Variable frequency divider circuit, 24
...Reference oscillator, 25...Division ratio memory, 31...
・Microphone, 32...Voice recognition device, 34...
D/A converter, 35... frequency dividing circuit.

Claims (1)

[Claims] 1. (a) input means for inputting tempo motto identification information corresponding to a desired tempo motto; (b) input means for inputting tempo motto identification information input from this input means corresponding to the tempo motto; (c) means for generating a tempo clock signal for automatic performance; (d) converting the frequency of the tempo clock signal into the tempo motto in accordance with the frequency control information from the converting means; A tempo setting device for an automatic performance machine, comprising a tempo control means for controlling the tempo to a value corresponding to the tempo. 2. The tempo setting device for an automatic musical instrument according to claim 1, wherein the input means inputs the tempo motto identification information by a tempo motto designation operation. 3. The tempo setting device for an automatic performance machine according to claim 1, wherein the input means inputs the tempo motto identification information by voice.