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

A technology of vocoder and vocoder, which is applied in the field of multi-channel duplex vocoder and multi-channel duplex vocoder system, can solve the problems of complex control, large amount of encoding calculation, difficult to realize, etc., and achieve large processing capacity Effect

Active Publication Date: 2013-01-23
GUANGZHOU HAIGE COMM GRP INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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

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Embodiment Construction

[0017] see figure 1 , figure 1 It is a structural schematic diagram of the first embodiment of the multi-channel duplex vocoder of the present invention.

[0018] The multi-channel duplex vocoder 10 includes: a digital signal processor 11 (DSP, Digital Signal Processing) and a multi-channel buffer serial port 12 (McBSP, Multichannel Buffered Serial Port), the digital signal processor 11 and the multi-channel Buffered serial port 12 connections.

[0019] The multi-channel buffer serial port 12 is used for input or output transmission data frame; wherein, the transmission data frame includes a plurality of input control command fields, a plurality of input PCM voice data fields, a plurality of input vocoder data fields, a plurality of An output control command field, a plurality of output PCM voice data fields and a plurality of output vocoder data fields;

[0020] In the input channel, the digital signal processor 11 obtains the input transmission data frame from the multi-c...

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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...

Claims

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Application Information

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IPC IPC(8): G10L19/16
Inventor 弋靖胡汉武吴小涛刘军
Owner GUANGZHOU HAIGE COMM GRP INC
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