SU822248A1 - Device for converting acoustic signals - Google Patents

Description

t

The invention relates to instrumentation and can be used in devices for the analysis and synthesis of musical sounds, speech, as well as for. Hz e-spectra of the original broadband signals.

A device for converting:; acoustic signaling is known, comprising a parallel spectral analyzer and a synthesizer l.

The disadvantages of this device include its relatively narrow functionality.

Closest to the invention is a device for converting acoustic signals, comprising a parallel spectrum analyzer whose outputs are connected to polling switch cells via polling keys connected via an intermediate adder to synthesizer keys connected to synthesizer switch cells and to synthesizer cells whose outputs are connected to the input of the output adder, as well as the cells of the programming unit, the inputs of which are connected to the outputs of the cells of the synthesizer switch, and the output - to the input of the block 2 and the control.

The disadvantage of this device is that it has limited functionality.

The purpose of the invention is to expand the functionality of the device. ,

The goal is achieved by the fact that a device for converting acoustic signals containing a parallel spectrum analyzer, the outputs of which are connected to the cells of the interrogation switch via interrogation keys connected via an intermediate adder to the keys of the synthesizer and to the cells of the synthesizer whose outputs connected to the input of the output adder, as well as the cells of the programming unit, the inputs of which are connected to the outputs of the cells of the synthesizer switch, and the output to the input Lok control, provided with synchronizing unit, connected with the inputs of the output control unit inputs

5 switch cells interrogate to one of the outputs of the synthesizer switch cells, and outputs with the inputs of the switch: echo of the interrogator switch.

The drawing shows a structural diagram of the proposed device.

0

The device contains a parallel spectrum analyzer 1, which is the unit of the original spectral function, which includes, for example, a set of filter detectors connected to survey keys 2 connected to control the inputs to the corresponding cells of the survey switch 3, made in the form of, for example, shift registers moreover, the inputs of the 2 polling keys of the same group are connected in parallel to the corresponding outputs of block 1, and the outputs K of the (last) keys of each of the sets. M keys 2 poll are connected in parallel to the input of the intermediate adder 4, the output of which is connected to

inputs L keys 5 synthesizer. The outputs of the keys are connected, respectively, to the control inputs L of the synthesizer cells 7, and the control inputs of the synthesizer keys 5 are connected to the outputs of the corresponding cells of the synthesizer switch 6, performed similarly to the switches 3. The outputs of the synthesizer cells 7 are connected to the input of the output adder 8. The outputs of the switch b connected to the corresponding inputs of the cells of the programming unit 9, made in the form of, for example, a keyboard, and the general output of the keyboard is connected to the starting input of the control unit 1.0, the output of the last cell the switch 6 is connected to the reset inputs of blocks 3, 10 and 11. The synchronizer block 11 contains M cells, the outputs of which are respectively connected to the counting inputs of the polling switch 3 cells, and the input of the synchronization block 11 is connected to the output of the control unit 10, clock generator and control the output of the block 10. The output of the clock pulse generator of the control unit 10 is connected to the counting input of the switch b.

The device works as follows.

In the initial state, the outputs K of the cells of block 1 are given voltages proportional to the amplitudes of the corresponding harmonics of the original signal. The switches of unit 3 are in the initial (zero) state. The input of the switch 6 operating in the ring counter mode continuously receives clock pulses from the control unit 10, and a voltage pulse moves at the keyboard outputs 9 If one of the keys is pressed, the pulse goes through the common keyboard bus to the starting input of the block 10 and through it opens the first cell of the block 11, while the clock pulses start to flow to the counting input of the first switch of the block 3, sequentially connecting the block 2 outputs of the block 1 to the input of the intermediate adder 4. Then the sync signal It is transferred via keys 5, controlled by switch 6, into synthesizer cells 7, where the spectral components of the output signal formed by J at the output of adder 8, i.e. The synchronous transfer of the spectral envelope of the original signal to the section of the frequency axis specified by the key of block 9, where the output signal is synthesized, is performed. When the switch cell has reached the last switch cell b, all switches (blocks 3 and 11) are reset and the cycle repeats.

When you press two or more keys

5, at the same time, each pulse arriving from the general output of the keyboard to the starting input of block 10 switches on the subsequent cells of block 11 and begins polling the outputs.

0 of block 1 by the corresponding switches 3 through the keys 2, while at the output of the adder 4 there are formed sigals equal to the sum of the voltage harmonics of the signals shifted relative to

5 FRIEND of a friend by the amount determined by the gap between the pressed keys. This signal is transferred to the corresponding synthesizer cells 7 via switch keys 5 b. At the output of the synth synthesizer b, a signal is formed, representing the sum of two or more (according to the number of keystrokes pressed) input signals that are shifted in frequency but identical in their relative spectral composition. The device can be performed on standard registers and keys, for example, in the integrated design that do not require configuration. The synthesizer cells 7 may contain, for example,

0 master oscillators and frequency dividers on anasogic elements, and the stability of the device operation is determined almost by the frequency stability of the master oscillators,

5 which can be quite high for music synthesizers.

Claims (2)

Invention Formula A device for converting acoustic signals containing a parallel spectrum analyzer, the outputs of which are connected to the interrogation switch cells via interrogation keys connected via an intermediate adder to synthesizer keys connected to the synthesizer switch cells and to. synthesizer cells, the outputs of which are connected to the input of the output adder, as well as the cells of the programming unit, the inputs of which are connected to the outputs of the cells of the synthesizer switch, and the output to the input of the control unit, so that , with the aim of expanding the functionality of the device, it is equipped with a synchronization unit connected by inputs to the output of the control unit, inputs to the polling switch cells and to one of the outputs of the synthesizer switch cells, and outputs to the inputs of the polling switch cells. Sources of information taken into account in the examination . 1. USSR author's certificate in accordance with the application 2509519 / 18-10, cl. G 10 L 1/00, 1977. 2. USSR author's certificate in application 269Т991 / 18-10, cl. G 10 L 1/00, 1978 (prototype).