一种多路音频编解码系统的设计与实现

从连续可变斜率增量编码原理及应用背景讲起,重点提出了一种以基于现场可编程门阵列(FPGA)和专用编码转换芯片搭建的群路编码转换系统。该系统架构既吸收了商用芯片的高可靠性优势,同时采用FPGA进行多路调度和适配又增加了设备的灵活性和可扩展性。最后搭建测试了平台对该系统功能性能进行测试。测试结果显示,这里设计的群路编码转换系统性能优良,配置灵活,可扩展性好,具备广阔的市场应用前景。

Design and Implementation of Multi-channel Voice Code Conversion System

This article first gives the principle of encoder and decoder based on CVSD,particularly proposes a multi-channel voice code conversion system based on FPGA and voice conversion chip.This system integrates the high reliability of commercial chip,and adopts FPGA for multipath scheduling and adaption,thus remarkably raising its flexibility and extensibility.Finally an experimental platform is built up for function and performance test of the voice conversion system.The results show that the multi-channel voice code conversion system is of excellent performance and extensibility,and with flexible configuration,would have wide marketing application prospects.