基于黑匣子的多通道语音压缩编码实现

RESEARCH AND IMPLEMENTATION OF THE SPEECH ENCODER AND DECODER BASED ON THE REAL TIME SPEECH RECORDER

语音信号的数字化传输,一直是通信的热点之一,随着电子与计算机技术的不断发展,采用低速率语音编码技术进行语音传输已成为可能,并在铁路、电力、军事以及第三代移动通信系统等领域中得到广泛应用。提出了一个基于TI公司的定点DSP芯片TMS320C5416和ITU-TG723.1双速率语音编解码算法标准的多路语音实时记录系统的实现方案。在对算法标准C源代码深入分析的基础上,根据芯片性能特征对算法的实现进行了优化,并给出了最终结果。

With the development of electronics and computer technology, It＇s possible to transfer digital speech through network at low bit rate now. This can be used in many fields such as railway, electric power, military affairs and 3G applications. This paper introduces a real-time implementation of a multi-channels speech codec based on ITU-TG723. 1 and TMS320VC5416 digital signal processor.