JPS6211359B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to an automatic rhythm performance device that is improved so that the tempo of a rhythm player is displayed in correspondence with the displayed notes, thereby simplifying tempo setting. An automatic rhythm performance device is equipped with a tempo oscillator that generates a reference signal that forms a rhythm, and divides the tempo clock signal from the tempo oscillator as appropriate, and then sequentially generates pulses using a counting signal from a counting circuit or the like. These sequential pulse signals are combined in a logic circuit such as a matrix to form a rhythm pattern signal corresponding to the type of rhythm such as waltz, march, rumba, etc. Based on this rhythm pattern signal, a rhythm sound source such as a bass drum or a snare drum is driven to generate rhythm performance sounds. In other words, in such an automatic rhythm performance device, automatic rhythm performance sounds can be obtained by selecting and specifying the type of rhythm and driving the rhythm generator with a tempo clock signal from a tempo oscillator. However, by simultaneously controlling the oscillation frequency of the tempo oscillator, the rhythm tempo of the resulting automatic rhythm performance sound is specified.
For this reason, a tempo oscillator is usually configured so that its oscillation frequency can be variably controlled.The oscillation frequency of the oscillator is set using a control on the panel, and the rhythm tempo can be arbitrarily controlled. It is configured to allow variable control. Therefore, the tempo of the rhythm performance sound in such an automatic rhythm performance device depends entirely on the performer's sense, as the performer operates and sets the controls based on the rhythm performance sound that he or she hears. It is. For this reason, for example, when a beginner handles this automatic rhythm performance device, the rhythm tempo to be operated becomes very uncertain, making it difficult to set the tempo specified on the musical score. As a means to improve this drawback, for example, as shown in JP-A-53-110, the number of quarter notes per minute is displayed, and the rhythm tempo is confirmed by this displayed value. Means are being considered. However, if you think about the songs that are played along with automatic rhythm performance, the score may be displayed based on not only quarter notes, but also eighth notes, and even half notes. The tempo speed display means that displays the length of a quarter note is 8
When displaying a diacritic or half-note score,
It is necessary to convert this by mental calculation etc. and set the tempo speed. This invention was made in view of the above points, and it is possible to specifically display the tempo speed of the reference note displayed in the musical score, and to further simplify and ensure the tempo speed setting. The purpose of the present invention is to provide an automatic rhythm performance device that counts and displays the tempo clock signal supplied to the automatic rhythm generator in reference time units, and also selects and sets this reference time corresponding to the reference note. It was designed to do so. An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows its configuration. A tempo oscillator 12 whose oscillation frequency is variably set by a variable element 11 controlled by an operator (not shown) is provided, and the tempo clock signal P from this tempo oscillator 12 is Automatic rhythm generating section 1 which generates a rhythm pattern signal by dividing the frequency appropriately in a frequency dividing circuit 13 and generates a rhythm sound source signal in response to this pattern signal.
Supply to 4. Then, this automatic rhythm generating section 1
The rhythm sound source signal from 4 is supplied to a speaker 16 via an amplifier 15 as appropriate to generate rhythm performance sound. That is, tempo oscillator 1
Automatic rhythm performance sound with a rhythm tempo corresponding to the tempo clock signal from 2 can be obtained. Further, the tempo clock signal from the tempo oscillator 12 is supplied to the counting circuit 17 as a counting step signal, and the count value information of this counting circuit 17 is supplied to the storage device 18. In this case, counting circuit 1
7 is reset by a pulse signal S at a predetermined time interval from the reference time signal generation circuit 19, and this signal S is simultaneously supplied to the storage device 18 as a write command. That is, oscillator 1
The tempo clock signal from 2 is counted in reference time interval units from the reference time signal generation circuit 19,
The counted value is stored in the storage device 18,
This stored numerical value corresponds to the period of the tempo clock signal, that is, the tempo speed of the rhythm performance sound. The numerical information stored in the storage device 18 is digitally displayed on the display 20. Here, the interval of the reference time signal S in the reference time signal generation circuit 19 is specified by the note input device 21, and this input device 21 is configured to input eighth notes, quarter notes, quarter notes, etc.
It is composed of input switches 21a to 21d corresponding to diacritics, dotted quarter notes, and half notes, respectively. In the case of a device configured in this manner, the frequency of the clock pulses applied to the automatic rhythm generator 14 is set to, for example, 16 times the actual rhythm tempo frequency. Therefore, assuming that the tempo frequency of a standard quarter note is 60Hz and the frequency division ratio N of the frequency divider circuit 13 is "50", the clock signal frequency from the tempo oscillator 12 is set to 800Hz. Sometimes automatic rhythm performance sounds with a standard tempo of quarter notes can be obtained. At this time, display 2
It is preferable that the value "60" corresponding to the tempo frequency is displayed at 0, and the interval of the reference time signal S at this time is the 800Hz oscillator 12.
It is sufficient to make the time equivalent to counting 60 clock signals from the clock signal. Specifically, the interval between the reference time signals S may be set to 0.075 seconds. Table 1 shows the relationship between the reference note, the tempo frequency, and the interval of the reference time signal S.

[Table] FIG. 2 mainly shows the reference time signal generation circuit 19, which includes an oscillator 22 serving as a reference, a counting circuit 23 that counts the signal from this oscillator 22, and a reference musical note. A storage device 24 that is addressed in accordance with input information from the input device 21 and outputs a stored numerical value, and a counting circuit 23
A comparison circuit 25 is provided for comparing the counted value of 1 with numerical information read from the storage device 24, and a coincidence detection signal from the comparison circuit 25 is outputted as a reference time signal S and also supplied to the counting circuit 23 as a reset signal. It becomes like that. Here, the storage device 25 stores 8 minutes, 4 minutes, and 4 dots.
It has a storage section corresponding to each minute and half note, and each specified numerical value is stored. for example,
Assuming that the output signal frequency of the oscillator 22 is 100KHz, the value "15000" is stored in the storage section of the storage device 24 corresponding to an eighth note based on the relationship shown in Table 1 above, and the comparison circuit 25 is output at intervals of 0.15 seconds. A coincidence output signal S can be obtained from the following. Similarly, the numerical values ``7500'' are stored in the storage units corresponding to quarter notes, dotted quarter notes, and half notes in the storage device 24, respectively.
If "5000" and "3750" are stored and a musical note is specified and input using the switches 21a to 21d of the input device 21, the stored numerical value of the corresponding storage section is read out.
It is now supplied to the comparison circuit 25 as comparison information. and 0.15 seconds, 0.075 seconds, 0.05 respectively
It generates a reference time signal S at intervals of 0.0375 seconds and 0.0375 seconds, and specifically, as mentioned above, when the clock frequency of the tempo oscillator 12 is 800Hz, each note of 8th minute, 4th minute, dotted 4th minute, and 2nd minute is generated. In response to the designation, the display 20 displays the numerical values of tempo speeds "120,""60,""40," and "30" corresponding to each note. FIG. 3 shows an example of the configuration of an automatic rhythm performance section.
It is set in the clapper 27 section on the side of the 6, and has a plurality of rhythm selection switches 28a, 28b, . . . for selecting and commanding the type of rhythm. The selection signal is supplied to the automatic rhythm generating section 14, and a predetermined pattern signal is selected from among a plurality of types of rhythm pattern signals formed by sequential pulse signals formed by the supplied tempo pulses. It is. In addition, the clapper 27 section has an on/off control switch 29, a tempo speed control knob 30, and a volume 31. The knob 30 controls the oscillation frequency of the tempo oscillator 12, and the volume 31 controls the volume of the automatic rhythm performance sound. Control. Further, a digital display 20 for displaying the tempo speed is provided together with push button type note input switches 21a to 21d constituting the input device 21. FIG. 4 shows the input device 21 and the display 20 taken out, and shows the switches 21a to 21.
d is effective if, for example, the selected switch is clearly displayed with a lamp or the like, and the display 20 is arranged so as to be connected to the input device section by an equal sign. There is. The display 20 is composed of a three-digit numerical display. That is, in the case of the automatic rhythm performance device configured as described above, by specifying the rhythm type, controlling and setting the oscillation frequency of the tempo oscillator 12 using the knob 30, and issuing a command to start rhythm performance, Automatic rhythm performance sound at a set tempo can be obtained. A numerical value corresponding to the tempo speed of this rhythm performance sound is displayed on the display 20, and this displayed numerical value is displayed on the note input device 2.
It is expressed as a numerical value corresponding to the specified note by 1.
For example, when the setting is such that a quarter note rhythm is played at a rate of 60 beats per minute, if the quarter note input switch 21b is operated, the numerical value "60" will appear on the display 20 as described above. is displayed. At this tempo speed, an eighth note is 120 minutes per minute.
Since the beat is 40 beats for a dotted quarter note and 30 beats for a half note, these values are displayed on the display 20 in response to the operation of the note switch. In the embodiment described above, the generation interval of the reference time signal S from the reference time signal generation circuit 19 is controlled in accordance with the operation input state of the note input device 21. However, this can be done even if the interval of the reference time signal S is kept in a specific state.
For example, as shown in FIG.
It may be multiplied by the information from 1 and displayed on the display 20. That is, 60 quarter notes per minute
The reference time signal generation circuit 19 is configured so that the stored numerical value of the storage device 18 divided by the reference time signal S is set to "60" in a state in which a beat rhythm performance is performed.
The input device 21 outputs "2", "1", and "2/3" corresponding to each switch 21a to 21d.
It is sufficient if a multiplier of "1/2" is given to the multiplication circuit 32. Further, the multiplication circuit 32 may be placed on the input side of the display 20 and a multiplication circuit 32a may be provided between the counting circuit 17 and the storage device 18 as shown by the broken line in FIG. 5. In FIG. 5, the same components as those in FIG. 1 are given the same reference numerals, and the explanation thereof will be omitted. In the embodiment, the note input switch 21
A, 21b, ...... have said that the illuminated push button type is effective, but this switch gives priority to the initial signal when the power is turned on, and this signal automatically changes the switch state of the note input device 21. Alternatively, the input switch 21b may be in a quarter note state (input switch 21b is on). In this case, the input switch 21a,
If 21b, . Also,
Alternatively, the reference note may be selected in conjunction with a rhythm selection switch. As described above, according to the present invention, in an automatic rhythm performance device that controls tempo speed, the tempo speed is digitized and displayed, and the displayed value directly indicates the number of beats based on the reference note specified on the musical score. It is a display that allows you to set the tempo very reliably according to the musical score of the performance piece.In particular, it directly displays the number of beats relative to the standard note, so it is especially useful for beginners and others. Rhythm tempo setting by an assistant or the like is greatly simplified and can be executed reliably.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram illustrating an automatic rhythm performance device according to an embodiment of the present invention, FIG. 2 is a diagram showing an extracted reference time signal generating section of the above embodiment, and FIG.
The figure shows the external appearance of the automatic rhythm performance control section.
This figure also shows the display section taken out, and FIG. 5 is a configuration diagram showing another embodiment of the present invention. 11...variable element, 12...tempo oscillator, 1
4... Automatic rhythm generating section, 17... Counting circuit, 1
8...Storage device, 19...Reference time signal generation circuit, 20...Display device, 21...Reference musical note input device.

Claims (1)

[Claims] 1. A tempo oscillator whose oscillation frequency is operationally controlled and supplies a tempo clock signal to an automatic rhythm generator, means for counting and storing the tempo clock signal from this oscillator in specified time units, and a numerical value corresponding to this stored information. , a reference note setting input device provided respectively corresponding to a plurality of types of reference notes, and means for converting and setting the displayed numerical information in correspondence with the input reference notes. An automatic rhythm performance device characterized in that the tempo number corresponding to the displayed reference note is displayed.