JPS5850380Y2 - Ensemble effect generator - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an unsample effect generating device suitable for use in electronic musical instruments.

In conventional electronic musical instruments, the sound is produced simply from a fixed speaker, so the sound is extremely flat.

Also, even with a tremolo device using a rotating speaker, the strength of the sound simply changes, or the frequency changes to a certain extent due to the Dotsuppler effect, resulting in an unsampled effect that resembles playing multiple instruments at the same time. It was impossible to get it.

This invention has been made in view of the above points, and provides an unsample effect generating device that can produce an unsample effect for electronic musical instruments, especially an unsample effect that has a spacious and deep sound and a natural feel. The purpose is to

Therefore, this invention provides a plurality of series of variable delay devices that delay the input musical tone signal by a predetermined time and output it, and a plurality of first
The delay time of each variable delay device is modulated by a plurality of series of control signals formed by mutually combining and synthesizing a very low frequency signal and a plurality of second very low frequency signals having a second frequency and different phases. By controlling each variable delay device, a musical sound signal whose delay time has been modulated is obtained, and these modulated musical sound signals of multiple series are applied to a plurality of speakers placed toward the front and sides of the electronic musical instrument, respectively, and then emitted. It was made to make a sound.

Hereinafter, embodiments of this invention will be described with reference to the attached drawings.
o Figure 1 is a system diagram of an embodiment of this invention, in which a musical tone signal from a sound source is applied to an input terminal T, and a variable delay device I to be described later is applied.
Split connection to A, IB and 1C.

Then, the variable delay device 1A is connected to the speaker SP1 via the amplifier A1, the variable delay device 1B is connected to the speaker SP2 via the amplifier A2, and the variable delay device 1C is connected to the speaker SP2 via the amplifier A2.
is connected to speaker SP3 via amplifier A3.

In addition, each speaker SP LSP2. The input lines of SP3 are connected through resistors R7, R8, and R9 to mutually mix the musical tone signals.

Furthermore, an oscillator 3 with an oscillation frequency of 7 Hz provided incidentally to the above system is connected to a phase dividing circuit 4 made of a CR open circuit to extract three series of ultra-low frequency signals of 7 Hz and different phases. At the same time, an oscillator 5 with an oscillation frequency of 0.7i (z) is connected to a phase division circuit 6 to extract three series of extremely low frequency signals of 0.7 Hz and different phases.

Then, each phase output, for example, each output of 0° phase, of the first and second ultra-high frequency signal generators consisting of the oscillator 3 and the 5-degree phase dividing circuits 4 and 6 is connected to a resistor R1,
The ultra-low frequency control signal a mixed through R2 is applied to the voltage controlled oscillator 2A of the variable delay device 1A, and the ultra-low frequency control signal a mixed with each output of 60° phase is applied through resistors R3 and R4. Furthermore, an extremely low frequency control signal C obtained by mixing each output of 120° phase through resistors R5 and R6 is applied to the voltage controlled oscillator 2C of the variable delay device 1C. supply

Incidentally, as the delay elements 3A, 3B, and 3C in each of the variable delay devices IA, IB, and IC, charge coupled devices (abbreviated as CCD) are used, for example.

As shown in FIG. 2, this CCD has voltage lines Ll, L2 . The electrodes 11A, 12A, 13 are connected so that the same voltage with different phase is applied to L3.
A, electrodes 11B, i2B, 13B, and other electrodes 11C, 12C, 13C are connected in parallel for each set, and a voltage is applied to voltage line L1, as shown in FIG.
As shown in the figure, holes exist under each electrode 11A, 12A, and 13A according to the signal pattern, and when a voltage is then applied to the voltage line L2, as shown in Figure A, holes exist under the electrodes 11A, 12A, 13A.
The potential wells B, 12 B, and 13 B become the deepest, allowing holes under the electrodes 11 A, 12 A, and 13 A to move.

It is known that when a voltage is then applied to the voltage line L3, holes are present under the electrodes 11B, 12B, and 13B in accordance with the signal pattern, as shown in FIG.

In order to give directionality to the hole transfer, in this example, one bit is transferred using three electrodes, so that the voltage lines L1, L2, . By sequentially applying voltages to L3, a 1-bit shift is completed.

The CCD is like this, with voltage lines Ll, L2, L
The shift time of the human power signal changes depending on the frequency of the voltage signal (transfer pulse) sequentially applied to the terminals 3 and 3.

Therefore, by controlling the oscillation frequencies of the voltage controlled oscillators 2A, 2B, and 2C that generate these transfer pulses using ultra-low frequency control signals a, b, and c, respectively, each delay element (CCD) 3A, 3B, By changing the delay time due to 3C, it is possible to obtain a desired delayed musical tone signal (delay time modulated musical tone signal).

These delayed musical tone signals are transmitted to amplifiers AI, A2 . The signals are amplified by A3 and mixed with each other by resistors R7, R8, and R9, and then output to the speaker SP1. SP 2. Sound is emitted from SP 3.

At this time, for example, the input waveform of the voltage controlled oscillator 2A with a phase of 0° is a composite waveform in which the 0.7 Hz waveform shown by the broken line is added to the 0.7 Hz waveform shown by the broken line as shown by the solid line in FIG.
The change in delay time at that time has a waveform as shown in FIG.

In addition, as shown in FIG. 5, speakers SPI and sp3 are attached to the left and right side plates 8A and 8B of the electronic musical instrument main body 7,
A speaker SP2 is attached to the front panel 8C so that the sound image moves and an unsampled effect with sound spread and depth is obtained.

In FIG. 5, E indicates an expression pedal, UK indicates an upper keyboard, LK indicates a lower keyboard, and PK indicates a pedal keyboard.

Moreover, each speaker SP 1 , SP 2 . The input lines of SP 3 are connected through resistors R7, R8, and R9, and the musical tone signals with different delay phases are mixed with each other, so the transition of sound between each speaker is smooth, and the difference between multiple sound sources is audible. You can obtain an unsampled effect in which the transition of the sound image feels extremely natural.

Furthermore, as a means for obtaining a three-phase 7Hz signal and a 0.7Hz signal, as shown in FIG. RIO and R13, R11
By mixing through R14 and R12 and R15, the oscillation outputs of the respective oscillators do not have the same phase relationship with each other, so a more natural unsampling effect without regularity can be obtained.

As described in the embodiments above, the unsample effect generating device according to this invention can produce an unsample effect similar to that of multiple musical instruments being played simultaneously with a simple configuration, and can also improve the spread and depth of sound. A certain unsampling effect can be obtained.

In particular, this invention uses a delay element, such as a CCD, as a variable delay device whose delay time is determined in accordance with the frequency of the transfer pulse, so it is extremely easy to create a musical tone simply by changing the frequency of the transfer pulse. It is possible to perform delay time modulation of the signal.

Moreover, in this case, since the delay time of the delay element does not change depending on the frequency of the input music or sound signal, the same unsampling effect can always be obtained whether the frequency of the musical sound signal is low or high.

Further, the delay time of the variable delay devices of the plurality of series can be set to a plurality of first very low frequency signals having a first frequency and mutually different phases, and a plurality of second very low frequency signals having a second frequency and having mutually different phases. Since the modulation is controlled by multiple series of control signals formed by mutually combining and synthesizing frequency signals, the delay time of each variable delay device changes in a complicated manner with different phases as shown in Figure 4. become,
As a result, a complex and rich unsampling effect without monotony can be obtained.

[Brief explanation of the drawing]

Figure 1 is a system diagram of an embodiment of this invention, Figure 2 is a diagram of the operating principle of the delay element CCD used in this invention, Figure 3 is a waveform diagram showing an example of the input waveform of a voltage controlled oscillator, and Figure 4. is a waveform diagram showing an example of change in delay time due to a variable delay device,
FIG. 5 is a partially cutaway front view of an electronic musical instrument implementing this invention, and FIG. 6 is a system diagram showing another example of the control signal generating device. I A, I B, I C...variable delay device, 2
A, 2B, 2C... Voltage controlled oscillator, 3A, 3
B, 3C...Delay element CCD, 3,5...
...Oscillator, 4,6...Phase division circuit, 7...
...Electronic musical instrument body, 8A, 8B...Side plate, 8C...Front plate, R1-R15...
Resistor.

Claims (1)

[Claims for Utility Model Registration] A delay element that inputs a musical tone signal and outputs the musical tone signal with a time delay corresponding to the frequency of the supplied transfer pulse, and a pulse generator that generates the transfer pulse, respectively. a first very low frequency signal generating device that generates a plurality of first very low frequency signals having a first frequency and different phases, and a first frequency different from the first frequency. a second very low frequency signal generator that generates a plurality of second very low frequency signals having a second frequency and different phases; and a plurality of first and second very low frequency signals having different phases. Control in which signals are mutually combined and synthesized to form a plurality of sets of control signals, and the frequencies of the transfer pulses generated from the pulse generators in each of the variable delay devices are respectively modulated by the plurality of control signals. a plurality of speakers that respectively amplify and emit delay time modulated musical tone signals output from each of the variable delay devices, and at least one of the plurality of speakers is connected to an electronic musical instrument. An unsampled effect generating device characterized in that at least one other speaker is placed in front and facing the side of the electronic musical instrument.