This article describes four types of commonly used coding system in speech compression coding techniques.
本文介绍了语音压缩编码技术的四种常用的编码体制。
Part Ⅱ studies the compression of dimension of speech feature.
第二部分研究语音信号特征维数的压缩问题。
It is a kind of lossy speech compression algorithm.
是一种失真的音讯压缩方式
We choose TMS320C5409 DSP chip to implement speech compression scheme, and optimize the code of G.723.1 in order to realize real time codec of two path speech signal on one DSP chip.
本文详细地介绍了G.723.1的编码原理以及算法实现。在实现时选用了TMS320C5409 DSP芯片，结合芯片的特点对G.723.1的代码进行了优化，以达到在一片芯片上实现两路语音信号的实时编解码。
The system is based on PC ISA bus. Its characteristic includes real time realization of up to 10 channels speech acquisition and compression, one channel speech decompression with high ratio of performance to price by a single DSP.
该系统基于PC-ISA总线结构，最大的特点是通过单片DSP高性能价格比实时地实现了多达10路的语音采集和10路语音实时压缩及一路语音解压处理。
To improve the speech quality, it is necessary to adopt such speech processing techniques like speech compression, voice activity detection, echo cancellation, Jitter Buffer and so on.
为了提高语音质量，需要采取一系列的语音处理技术，主要包括语音压缩技术、静音处理技术、回声消除技术、抖动缓冲技术等。
The work uses Adaptive Delta Modulation (ADM) to realize speech waveform coding and digital data compression.
采用波形自适应增量调制编码方法，研究并解决了语音信号的压缩与加密。
A circuit is designed on high-density-programmable-devices, which is used for compression coding of speech signals, namely the conversion from Pulse-Code-Modulation code to A-law PCM code.
在高密度可编程逻辑器件上设计电路，实现语音信号的压缩编码，即线性脉冲编码调制（PCM）码转换成A律PCM码。
ITU-T G729 protocol is a kind of speech compression coding technology based on Conjugate Structure Algebraic Code Excited Linear Prediction (CS-ACELP) algorithm.
其中ITU-TG729协议是基于共扼结构-代数码激励线性预测（CS-ACELP）的语音压缩编码技术。
729a is the fourth generation of speech compression coding standard used on PSTN issued by ITU T. It is used for coding speech at 8 Kbps by conjugate structure algebraic code excited linear prediction (CS ACELP) scheme.
729a是ITU-T推出的用于PSTN的第四代语音编码标准，采用了共轭结构-算术码本激励线性预测编码（CS-ACELP）算法，其码率为8Kbps。
Then, the paper discusses the realization of the speech's sampling module, playback module, communication module, compression and decompression module in detail, and gives a self-adaptive silence detection algorithm and a policy to make disorder data package in order.
文章详细地讨论了语音网络通讯的采集模块、回放模块、通信模块和压缩解压模块的具体实现，并提出了一种自适应的静音检测算法和数据包乱序调整的策略。
Simulation of Speech Compression and Multi - channel Speech Multi plex and Exchange
语音压缩和多路语音复用及交换的仿真研究
Multi-pulse excited linear predicative coding (MP-LPC) is a newly developed speech compression method.
多脉冲线性预测编码（MP-LPC）算法是近来发展很快的一种语音压缩编码方法，文中介绍一种基于最大互相关搜索法的MP-LPC编码方案。
Combined with the practical item of train attemper command system based on the TETRA protocol, this article researched the algorithm of TETRA speech compression coding and its DSP implementation.
本文结合基于TETRA的数字列车调度指挥系统的实际项目，具体研究TETRA协议中语音压缩编译码算法及其DSP实现。
It is of great economic and practical value to implement low bitrate speech trans-mission by making use of the bandwidth compression technique.
利用带宽压缩实现低速语音传输具有重大的经济价值和实用价值。
Realization of a Speech Compression System Based on Logarithmic Pulse Code Modulation
基于对数脉冲编码调制的语音压缩系统实现
However, because of compression and encrypting, transfer delay becomes longer, the echo path becomes longer and the correspondence quality of speech signal obviously drops, and we have to add an echo-canceller at the terminal of VoIP.
然而，IP电话由于压缩、加密等处理的延时和网络传输延时导致回声路径变长，使语音通信质量明显下降，必须在VoIP终端上必须增加回声消除技术。
Over the years, it has been the goal that compressing the transmission bandwidth of speech signal or reducing the transmission rate of telephone channel. In achieving this target, speech compression coding technology plays an important role.
多年来，人们一直追求的目标就是压缩语音信号的传输带宽或降低电话信道的传输码率，而在实现这一目标中，语音压缩编码技术发挥着重要作用。
Speech signal compression technique is an important technique in multimedia communication. It can reduce speech signal transformation rate and improve the utilizing efficiency of network bandwidth.
语音压缩编码技术是多媒体通信中一种非常重要的技术，它可以大幅度降低语音信号的传输速率，提高网络带宽利用率。
KLT is applied comprehensively in data compression technique and speech enhancement and so on.
KLT不仅在数据压缩技术中占有重要地位，在语音增强领域中也有重要应用。