As an important part of NGN ( Next Generation Network ) VoIP ( Voice over IP ) is one of the hottest emerging technologies in telecommunication industry which integrates technologies including voice signal voice encoding and compression network transmission QoS and real time transmission .

VoIP技术集语音信令技术、 语音编码 压缩 技术、网络传输技术、QoS技术、实时传输等技术为一体，是当前通讯行业最热门、发展最快的领域之一，是NGN目标的重要部分。

The entire communication system includes voice communication based on RTP dual-core communication compression algorithms and interface control management modules .

整个通信系统包括基于RTP协议的 语音通信部分、双核通信部分、 压缩算法实现和界面控制管理部分。

This voice compression and network transmission system is to address the shortcomings of existing IP telephone and to achieving the secession of PC.

本文所实现的数字 语音 压缩及网络传输系统就是为解决现有IP电话的这一弊端、实现IP电话与PC机的脱离而设计的。

Voice Compression Technology in Digital Recording System of Dispatch

调度用数字录音系统中的 语音 压缩技术

Design of Driver for Multi-channel Voice Acquisition and Compression

一种多通道 语音采集 压缩的驱动程序设计

DSP control based voice systems with TMS320VC5402bas a microcontroller realizes the functions of voice signal acquisition compression and data transmission .

文章基于DSP的语音系统，采用TMS320VC5402作为微控制器，实现了对 语音信号的采集 压缩和传输数据等功能。

In a VoIP system real-time voice data compression is needed to reduce network bandwidth requirements .

在VoIP系统中，需要将 语音数据实时 压缩以降低网络带宽需求。

DSP is the first choice in the voice processing due to its unsurpassable capability of compression calculation and special processing .

而DSP在数字信号处理中能够胜任 密集型运算和特殊处理，有着不可替代的作用，使其成为 语音处理的首选 技术。

In the second chapter the foundation knowledge about IP phone is discussed including the present status of VOIP how IP phone works key technology of IP phone and especially introduces voice compression algorithm .

第二章阐述了IP电话的基础知识，包括VOIP的发展现状、IP电话的工作原理、IP电话关键技术等，重点介绍了 语音 压缩算法。

The realization of VoIP system involves a series of questions such as : the voice compression coding the signaling dispatch passing through NAT and firewall and so on .

实现VoIP系统涉及到 语音 压缩编码、信令调度、穿越NAT和防火墙等一系列问题。

Cast frame and oversize LF voice coils mean sustained high power output capacity and minimal power compression .

铸造框架和特大型低频 声音线圈意味着持续的高功率输出容量和最低的 压缩。

In order to protect the security of VoIP transmission it is necessary to encrypt the voice data and voice compression at low bit rate is chosen for decreasing the large computation of encryption .

为了保障VoIP的安全传输，需要对语音数据进行加密。然而加密的运算量通常会很大，对数据的比特率有一定要求，要选用低码率的 语音 压缩 方法。

VC and study in how to use their voice compression and decompression . 6 .

并研究了在VC下如何使用其对 语音进行 压缩和解压缩。

Frame relay voice compression capabilities have increased along with the development of the frame relay technology .

帧中继 话音 压缩功能随帧中继技术的发展而得到增强。

It is compatible with voice and data by using the voice compression and data transmission technology .

应用 语音 压缩，数据传输技术，实现语音及数据同时兼容，最大限度地开拓网络资。

DSP performs voice process part including voice compression echo cancellation tone activity detection tone detection and generation voice packet these are signal process scope .

DSP处理器完成语音处理的部分，包含了 语音 压缩、回波消除、拨号音的产生、语音打包等等，这些基本上都属于信号处理的范畴。

The Application of Voice Compression / Expansion Technology in Data / Voice Compatible Radio Train Dispatch Communication System

话音 压缩/扩展技术在数话兼容无线列调系统中的应用

The principle of long period voice recording with special voice compression hardware and the characteristics of the digital voice recorder with time code attached are introduced with description of some main parts and the software flowchart is given also .

介绍了一种用 语音专用 压缩硬件进行长时间语音录放的原理和数字式时间声音记录仪的特点，对一些主要部件作了说明；最后给出了软件流程框图。

This paper presents an extracting method of high energy wave which takes most of voice feature in speech signals . Through Matlab simulation high compression rate of speech compression and recovery is implemented .

该文介绍了提取 语音信号中最具特征表现力的高能谐次波的方法，通过Matlab模拟，实现了高 压缩比的语音压缩与恢复。

The introduction of IP telephone network system begins from the system structure and key technologies and then the entire system design and the functional planning are provided with in-depth investigations and widely research on the current epidemic situation of dedicated voice compression processor chip .

本文从介绍IP电话网络系统结构和系统中所用关键技术入手，通过对目前流行的通用嵌入式处理器和专用 语音 压缩芯片进行了广泛深入的调查研究，给出了整个系统的设计方案和功能规划。

723.1 voice compression standard and make it to be able to communication through network .

723.1的数字 语音 压缩＼解压缩系统，从而能够实现语音的 压缩＼解压缩及其在网络上的传输。

IP voice communication is a technology that transmitting the data through the packet-switched network after data compression .

IP 语音通信是指将语音数据包 压缩之后，利用IP协议通过分组交换网传输。

And according to the technical requirements for the voice systems the instructions of the audio signal formats and compression techniques has been further explained and the approach of audio signal has been set .

根据 语音系统的主要技术指标要求，研究分析了音频信号格式与 压缩技术，确定了音频信号的处理方式。

Restricted by low-frequency available and narrow bandwidth in acoustic channels acoustic voice communication puts forward a high demand on voice data compression .

由于受到水声信道中可利用的工作频率低、带宽窄的限制，水声语音通信对 语音数据的 压缩提出了较高的要求。

From the results of hardware simulation and subjective analyses the voice quality is well after compression and decompression and has little difference from the original voice .

通过硬件试验和主观试听结果分析，经 编码和解码后的 语音质量良好，与原始语音无较大差别。

According to the characteristic of discontinuous voice signal this compression algorithm provides the function of voice active detection and improves the compress ratio of voice signal .

同时，根据 语音信号不连续的特点， 压缩算法具有静音识别功能，进一步提高了语音信号的压缩率。

Processing input vectors in parallel mode fast and effectively the vector quantization coder based upon neural networks is suitable for voice and image data compression .

该神经网络矢量量化编码器能够并行处理输入矢量，速度快，效率高，适用于 语音和图像数据 压缩。

Set up the development of voice processing platform and detailed system architecture design compression algorithm optimization .

搭建 语音处理的开发平台，并进行详细的系统结构设计， 缓存处理， 压缩算法优化等工作。