论文部分内容阅读
二线全双工传输一直是模拟话音保密通信的技术难题。本文介绍了一种采用TMS 32010数字信号处理器(OSP)构成的自适应话音回波抵消器来实现二线全双工传输的方案,并给出了硬件实现框图和软件流程图以及信道试验结果。试验表明,本文所述回波抵消器达到了CCITTG.165建议的性能要求。
Second-line full-duplex transmission has been the technical challenge of analog voice communication. This paper presents a solution using TMS 32010 digital signal processor (OSP) composed of adaptive voice echo canceller to achieve full-duplex two-wire transmission scheme, and gives the hardware implementation of the block diagram and software flow charts and channel test results. Experiments show that the echo canceller described in this article meets the recommended performance requirements of CCITTG.165.