JPS6230070Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of an ensemble circuit for an electronic musical instrument that simultaneously emits a musical tone signal of an orchestral ensemble, a string ensemble, etc. and a Tavian musical tone signal using the Leslie effect from each speaker.

Conventionally, in this type of circuit, musical sound signals from orchestra ensembles, string ensembles, etc. pass through multiple amplifiers and are emitted from speakers corresponding to each amplifier, and Tavia-based musical sound signals that utilize the Leslie effect are transmitted to the multiple amplifiers. Sound was emitted from the Leslie speaker through a separate amplifier.

For this reason, an amplifier of the same type and separate from the plurality of amplifiers is an essential component, and since the amplifier is expensive, it has been an obstacle to reducing the cost of electronic musical instruments.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to eliminate the above-mentioned drawbacks, utilize circuits effectively, prevent deterioration in sound quality, and reduce power consumption.

Figure 1 shows the principle circuit diagram of the present invention, which includes three buckets, a bricade, and a device (BuKet).
Brigade Device, hereinafter referred to as BBD. )7,8,
Each output side 10, 11, 12 of 9 is connected two by two, and selector switch 13, 14 or selector switch 1
5 to the inputs 16, 1 of the respective amplifiers 2, 3
7 and the outputs 18, 19 of the respective amplifiers 2, 3 are connected via selection switches 20, 21 to the respective loudspeakers 4, 5. Here, the selection switches 13, 14, 15, 20, and 21 are used for cases in which only musical sound signals such as Autest Stra Ensemble and String Ensemble are emitted from the respective speakers, and in cases where only musical sound signals such as Autest Stra Ensemble and String Ensemble are emitted from the respective speakers, and in addition to the musical sound signals, Davia type sound signals using the Leslie effect are used. They are provided on the input and output sides of the amplifiers 2 and 3, respectively, for selecting a case where a musical tone signal is emitted using the following circuit.

The three BBDs 7, 8, and 9 are MOS type LSTs made with a P-type silicon gate structure, and give a delay to musical sound signals such as orchestra ensembles and string ensembles applied as input, that is, change the phase by a predetermined value. voltage-controlled oscillators (Voitage).
Controlled Oscillator, hereinafter referred to as VCO. )2
The clock pulses from 2, 23, and 24 are used as control inputs.

The frequencies of the clock pulses of the three VCOs 22, 23, and 24 are controlled by three-phase low-frequency voltages sent from a three-phase low-frequency oscillator 25 and whose phases are shifted by 120 degrees.

Among the above components, three BBD7, 8,
9. Three VCOs 22, 23, 24, low frequency oscillator 25, three BBDs 7, 8, 9 each output side 1
A circuit formed by two coupling sections 26 and 27 in which two of 0, 11, and 12 are coupled is called an ensemble musical tone signal circuit 1, and the ensemble musical tone signal of each channel connected to the two coupling sections 26 and 27, respectively. The ensemble musical tone signal circuit 1 having output terminals 51 and 52 for outputting the following is referred to as a two-channel ensemble musical tone signal circuit.

On the other hand, a circuit for emitting a Davia musical tone signal using the Leslie effect from a speaker connects the Tavia television musical tone signal circuit 6 to the input side 17 of the amplifier 3 via the selection switch 15, and further connects the Tavia musical tone signal circuit 6 to the input side 17 of the amplifier 3 via the selection switch 15. The side 19 is connected to a speaker 50 for Leslie.

The operation of the present invention having the above configuration will be explained below.

First, in order to perform only with ensemble musical tones, select switches 13, 14, 1 as shown in the figure.
Position contacts 5, 20, and 21.

A musical sound signal from a sound source passes through a string filter, a brass filter, etc. (not shown), and is sent from a terminal 28 to input sides 29, 30, and 31 of three BBDs 7, 8, and 9. On the other hand, the control input terminals 32, 33, and 34 of the three BBDs 7, 8, and 9 have three signals whose frequencies are determined by the voltage of the three-phase low frequency oscillator 25.
Clock pulses of VCOs 22, 23, and 24 are applied, respectively. With those clock pulses, 3
The three BBDs 7, 8, and 9 delay the musical tone signal, and furthermore, the three delayed signals with different phases are
The two channels are combined in two coupling sections 26 and 27 to form ensemble musical tone signals of two channels, and the ensemble musical tone signals of each channel are outputted to output terminals 51 and 52.
are sent to respective amplifiers 2 and 3, and ensemble musical tones are emitted from speakers 4 and 5.

Therefore, it is possible to electrically realize unique harmonies due to the individual differences in the performance of each performer that occur in live performances, and also to obtain a stereo effect. Next, in order to perform a performance that uses ensemble musical tones and Tavian musical tones that utilize the Leslie effect at the same time, turn the selection switches 13 and 1 at the positions shown in the figure.
Switch all contacts 4, 15, 20, and 21 to the opposite side.

The operation up to the point where the delayed signals output from the three BBDs 7, 8, and 9 are combined two by two is the same as in the case of performing only with the ensemble musical tones described above, and will therefore be omitted.

The delayed signals, which are combined in pairs, are sent to one amplifier 2 and emitted from two speakers 4 and 5. Therefore, the ensemble musical tone appears to be located near the front center of the two speakers 4 and 5.

On the other hand, the Taviar tone signal is sent from the Tavier tone signal circuit 6 to the amplifier 3 via the selection switch 15, and is further emitted from the Leslie speaker 50 via the selection switch 21.

Therefore, the ensemble musical sound changes from a spatially synthesized sound when emitted through the two speakers 4 and 5 to an electrically synthesized sound, and the sense of presence is somewhat lost, but at the same time, it is a Tavian style musical sound that utilizes the Leslie effect. Since the sound is emitted, the difference is compensated for in terms of hearing.

Note that the selection switch 14 is used when playing ensemble musical tones and Tavian musical tones using the Leslie effect at the same time, that is, when the selection switch 14 is
When all contacts 3, 15, 20, and 21 are switched to the opposite side, the volume of the ensemble is balanced. FIG. 2 shows a specific example of the present invention,
In place of the selection switches 13 and 14 in FIG. 1, field effect transistors 40 and 41 and selection switches 15
field effect transistors 42, 43 instead of , two contacts 44, 4 instead of selection switches 20, 21
5 interlocking relays 46 are used, and gate signals and relay activation signals for changing the states of the respective field effect transistors 40, 41, 42, 43 are given from the circuit 47 by pressing any Tavia tablet. , this specific example also has the same effect as the principle diagram explained in FIG.

Note that the ensemble musical tone signal circuit 1 is not limited to that shown in the drawing.

As described above, according to the present invention, a circuit connects each of the ensemble musical tone signal circuits of a plurality of channels to separate speakers via an amplifier, and a circuit connects the Tavia musical tone signal circuit to the Leslie speaker via an amplifier. When only ensemble musical tones are to be emitted in a type with When producing sound, the Tavia-based musical tone signal circuit is connected to the Leslie speaker via one of the plurality of amplifiers connected to the ensemble musical tone signal circuit, and the one-channel ensemble musical tone signal circuit connected to the amplifier is connected to the ensemble musical tone signal circuit. Since the speaker can be switched and connected to the speaker via an amplifier other than the amplifier, one expensive amplifier can be omitted, and Tavian musical tones using the Leslie effect can be used for performance and when not. It is possible to select the following by using a selection switch, and there are effects such as making it possible to use circuits effectively while preventing deterioration in sound quality and reducing power consumption.

[Brief explanation of the drawing]

FIG. 1 is a principle circuit diagram of the present invention, and FIG. 2 is a concrete circuit diagram of the present invention. 1... Ensemble musical tone signal circuit, 2, 3...
Amplifier, 4, 5...Speaker, 6...Tavia musical tone signal circuit, 50...Speaker for Leslie.

Claims (1)

[Scope of utility model registration request] An electronic device having a circuit in which a plurality of output terminals of a multi-channel ensemble musical tone signal circuit are respectively connected to a plurality of ensemble speakers via an amplifier, and a circuit in which a Tavia musical tone signal circuit is connected to a Leslie speaker via an amplifier. In the ensemble circuit of a musical instrument, when only ensemble musical tones are to be emitted, the plurality of output terminals are each connected to a plurality of ensemble speakers via ensemble amplifiers, and when both ensemble musical tones and Tavian musical tones are emitted. connects one of the ensemble amplifiers from the output terminal and the ensemble speaker to the Tavia musical tone signal circuit and the Leslie speaker, respectively, and connects the output terminal and the ensemble amplifier separated from one of the ensemble amplifiers. An ensemble circuit for an electronic musical instrument, characterized in that each speaker is connected to an ensemble amplifier connected to another output terminal and another ensemble speaker.