SU1133676A1 - Device for functional checking of transmitter of vocoder - Google Patents

Abstract

A DEVICE FOR THE FUNCTIONAL MONITORING OF THE VOCODER TRANSMITTER, containing a serially connected information signal source and a vocoder transmitter, consisting of a serially connected analyzer and a tone-to-noise discriminator, characterized in that, in order to increase the reliability of the control. rolling without interruption, the shift register, the first and second adders, the element I, the counter, the timer and the indicator are entered, the output of the Tone noise discriminator output is connected to the input of the shift register, the first output of which is connected to the first input of the first adder, the second input of which is connected to the first input of the second adder and the second output of the shift register, the third output of which is connected to the second input of the second adder, the output of which is connected to the first input of the And element, the other input of which is connected to the output of the first Odmator, and the output element And is connected to the input of the counter, the other (L input of which is connected to the output of the timer, and the output is connected to the input of the indicator.

Description

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05 The invention relates to telecommunications and can be used in the technique of vocoder communication. A device for monitoring the amplitude-frequency characteristic of a communication channel, comprising a serially connected first control frequency generator, a control frequency signal input unit, a first additional narrowband filter, a first additional amplitude detector, a first additional signal, a lower frequency filter, a group signal generating unit, and a modulator , and a second additional narrowband filter connected in series, a second additional amplitude detector and a second one A second low-pass filter, in addition, a second generator of controlled frequencies and an additional generator of a reference signal, while the output of the second generator of control frequencies is connected to the second input of the modulator, the output of which is connected to the second input of the block of input signals of the control frequencies, the reference signal generator is connected to the second input of the group signal shaping unit, the third input of which is connected to the output of the second additional lower filter, often the inputs of the first and second additional narrow signals The band filters are interconnected and are the outputs of the nepe sensor, at the reception - sequentially. the first narrowband filter, the first amplitude detector, and the first low pass filter, the second narrowband filter, the second amplitude detector, the second low pass filter, often the first comparator unit and the display unit, the control frequency detector blocks, the first control signal detector the separation unit of the group signal and the second comparison unit, in addition, the second pilot signal detector, whose input is connected to the second output of the signal extraction unit s reference frequency, and an output connected to a second input of the indication unit, a third input coupled to an output of the second comparator block, and the series-connected reference signal generator and the third comparator block, the second input of which is 1 62. connected to the third output of the group signal separation unit, and the output to the fourth input of the display unit, while the inputs of the narrowband filters and the input of the control signal extraction unit are combined with each other and are the receiver inputs l. The device can be used for functional coding of a vocoder without interrupting communication, however, the completeness of the control is not high enough, since the correctness of the analysis by the transmitter of the vocoder of the fine structure of the spectrum of the transmitted signal is not monitored. The disadvantage of the device is the impossibility of accurately localizing the place of occurrence of the malfunction. The closest to the invention to the technical essence and the achieved result is the functional control device of a vocoder transmitter containing serially connected information signal source and a vocoder transmitter consisting of serially connected analyzer and Ton-noise signal distinguisher 2. A disadvantage of the known device for functional control of vocoder is the need to interrupt communication, since the information signal used for monitoring differs significantly from the speech th signal. In addition, it is impossible to accurately localize the location of the malfunction. The purpose of the invention is to increase the reliability of control without prejudging communication. To achieve this goal, a device for functional control of a vocoder transmitter, containing a serially connected information source and a vocoder transmitter, consisting of a serially connected analyzer and a Ton Noise signal discriminator, has a shift register, first and second adders, And element, counter, timer and the indicator, with the output of the signal discriminator Ton-noise is connected to the input of the shift register, the first output of which is connected to the first input of the first adder, the second input of which It is single with the first input of the second adder and the second input of the shift register, the third output of which is connected to the second input of the second adder, the output of which is connected to the first input of the And element, the other input of which is connected to the output of the first adder, and the output of the And element is connected to the input of the counter, - another input, which is connected to the timer output, and the output is connected to the indicator input. FIG. 1 shows an electrical circuit diagram of a device for functional control of a vocoder transmitter; in fig. 2 - timing charts of the device. The device contains an information signal source 1, a vocoder transmitter 2 consisting of analyzer 3 and discriminator 4 Tone noise signals, shift register 5, first adder 6, second adder 7, element 8, counting pulses 9, timer 10 and indicator 11 .. The device operates as follows. . To the transmitter input 2 of the voco-therapy unit, an informational speech signal consists of voiced sounds at the time intervals utg and unvoiced sounds at the ut uttal time (Fig. 2a). In the vocoder transmitter 2, a binary Tone Noise signal is detected, corresponding to a voice signal. The tone-to-noise signal is sampled in time, allocated at the output of the 4 tone-to-discriminator. The noise of the vocoder transmitter 2 (Fig. 25) is written to and progressed to a three-digit shift register 5. The value of the tone-to-noise signal can change only at times tn the sampling interval of the tone-to-noise signal is & tg. In the Tone-to-Noise signal, the logical unit corresponds to the voiced sounds, the logical zero is not vocalized. Signal duration The tone is equal to it. The duration of the Noise signal is atyijj ,. The signals at the outputs of the first, second and third bits of the three-bit shift register 5 (Fig. 26, -, o) are delayed with respect to the Tone-noise signal at the output of the vocoder transmitter 2, respectively, by 4tg, 2 At and 3 tg. The signals at the outputs of the adders 6 and 7 are presented respectively in FIG. 2 e, 5 | . The signals at the output of the element And 8 are presented in FIG. 2. Thus, at the output of the And 8 element, a pulse appears every time when the Ton Noise signal at the output of the vocoder transmitter 2 encounters a Tone signal or a Noise signal with a duration equal to the sampling interval itg of the Tone Noise signal. From the output of the element And 8 pulses arrive at the counting input of the counter 9 pulses. By signals from timer 10, the pulse counter 9 is reset to the zero state. The pulses from the output of timer 10 follow at intervals of 5-10 s and determine the measurement time. If the output of the element AND 8. The pulses rarely arrive at long intervals, then the binary number in the counter 9 pulses does not have time to increase to a threshold value between the pulses from the output of the timer 10. If the pulses from the output of the And 8 often arrive then the binary number in the pulse counter 9 has time to increase to the threshold value, and the signal from its output goes to the indicator 11, which signals a failure of the vocoder transmitter 2. The feasibility of using the proposed device for functional control of a vocoder transmitter consists in the possibility of monitoring without interrupting the communication and increasing its reliability, which reduces the time of detecting the latent failure of the vocoder transmitter and restoring the vocoder link, i.e. increases its reliability.

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Claims (1)

DEVICE FOR FUNCTIONAL MONITORING OF A VOCODER TRANSMITTER, containing a serially connected information signal source and a vocoder transmitter, consisting of a series-connected analyzer and a tone-noise discriminator, characterized in that, in order to increase the reliability of the cont. the role without interruption of communication, the shift register, the first and second adders, the And element, a counter, a timer and an indicator are entered into it, while the output of the signal discriminator Tone-noise is connected to the input of the shift register, the first output of which is connected to the first input of the first adder, the second the input of which is connected to the first input of the second adder and the second output of the shift register, the third output of which is connected to the second input of the second adder, the output of which is connected to the first input of the And element, the other input of which is connected to the output of the first adder And the output of AND $ 8 connected to the input of the counter, the other input of which is connected to the timer output, and an output connected to the input indicator. >