Multi-channel duplex vocoder and multi-channel duplex vocoder system

Abstract

The invention provides a multi-channel duplex vocoder. Data coding and decoding are performed by the high processing capacity of a digital signal processor and the input and the output of data are performed by virtue of a multi-channel buffered serial port. The transmission data frame which is transmitted by the multi-channel buffered serial port comprises a plurality of input / output control command fields, input / output pulse-code modulation (PCM) voice data fields and input / output data fields which are respectively corresponding to multi-channel input / output data one to one. Thus, the coding / decoding results of multi-channel acoustic code data can be recorded in a transmission data frame, the transmission mode of the multi-channel duplex vocoder is simplified and the multi-channel duplex vocoder is realized. In addition, the control thereof is realized by the input / output control command field in the transmission data frame, thus the control method is simplified, the working efficiency of the multi-channel duplex vocoder is increased. The invention also provides a multi-channel duplex vocoder system, comprising at least two multi-channel duplex vocoders which are in parallel connection.

Description

technical field [0001] The invention relates to the technical field of vocoders, in particular to a multi-channel duplex vocoder and a multi-channel duplex vocoder system. Background technique [0002] A vocoder is a codec that analyzes and synthesizes speech, also known as a speech analysis and synthesis system or a speech band compression system, and is a powerful tool for compressing speech communication frequency bands and conducting secure communications. The advantage of the vocoder is the low digital rate. At present, the code rate of the vocoder has been reduced to 2400bps or 1200bps, or even lower. It is suitable for digital voice communication under narrowband and harsh channel conditions, especially under the condition of limited channel bandwidth. Voice communication with low rate, confidentiality and certain anti-interference ability can be realized by using vocoder. The vocoder is mainly used in military anti-jamming communication, confidential communication o...

AI Technical Summary

Problems solved by technology

However, a multi-channel full-duplex vocoder needs to encode each channel of sound signals. Due to the large amount of encoding calculations and relatively complicated control, it is often difficult to implement

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