In digital radio the research and design of voice coder algorithm is also the core portion .

在数字对讲机中， 声 码 器算法的设计和研究也是其核心部分。

Digital Voice Systems Inc. 's AMBE 1000 vocoder chip is a high performance full duplex real time speech compression coder chip . It can be used in many fields such as satellite communication security communication video conferencing etc.

DVSI公司的AMBE1000声码器芯片是一款高性能的全双工、实时语音压缩 编 解码芯片，可以应用于卫星通信、保密通信、视频会议等领域。

An Implementation of the RPE-LTP Voice Coder on DSP

RPE-LTP 语音 编码器在DSP上的实现

To meet the requirement of some particular fields especially wireless communication benthic communication military communication satellite communication secrecy communication and voice storage the demand for low bit rates speech coder will increase rapidly in the very near future .

为了满足一些特殊领域，特别是无线通信、海底通信、军事通信、卫星通信、保密通信、 语音存储等的 话音通信需求，语音 编码将向低比特率方向快速发展。

In the implementation of the voice coder this paper proposes a method to computing the ratio of packet losing based on RTP protocol and brings forward a.

在该 编码器中，采用了一种基于RTP协议的 语音包丢失率的计算方法，并提出了一种根据丢包率来 调整 编码速率的自适应策。

The thesis dissertates emphatically the realization of the concise ADPCM arithmetic in system introduces the data structure in assembler program describes the flow chart of the program that implements the record and play voice the coder and decoder of speech signal ;

论文详细阐述了简化ADPCM编码算法在系统中的实现，对照C语言介绍了汇编程序实现中的数据结构，从语音信号的录音和放音、 语音 的 编码和解码两方面描述了程序实现的流程；