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毕业设计（论文）

设计（论文）题目： 声音数据的压缩编码实现

湖南大学毕业设计(论文) 第III页

声音数据的压缩编码实现

摘要

随着信息技术的发展，语音压缩编码技术得到了快速发展和广泛应用，尤其是最近20年，

语音压缩编码技术在移动通信、卫星通信、多媒体技术以及IP电话通信中得到普遍应用，起着举足轻重的作用。为了提高通信容量和质量，对语音编码提出的要求也越来越高。不仅要求

低码率、低延迟，而且要求有很高的语音质量。先进的语音压缩编码的目标就是要在尽可能低的比特率下，最大限度的提取语音信号的特征信息，在接收端恢复尽可能清晰自然的语音。

本文介绍了语音数据压缩编码，以及常用的编码算法，还有传感器网络的特点及传感器网络的节点数据传输的特点等，同时还重点论述了在传感器网络中数据压缩的Huffman编码和游程编码的算法原理及其实现过程，从而了解传感器网络中数据压缩的特点。

关键词：数据压缩，语音编码，传感器网络，Huffman编码，游程编码

湖南大学毕业设计(论文) 第IV页

The data of speech encoding and implementation

Abstract

With the development of information technology, speech compression coding technology has been rapid development and wide application. Especially in the last twenty years, speech compression technology plays a decisive role in mobile communications, satellite communications, and multimedia and IP telephony in the universal application. In order to improve communication capacity and quality, the request of the speech coding is higher and higher. Not only requires a low rate, low latency, but also has a high voice quality. The purpose of advanced speech compression coding is to distill the speech signal maximum from the characteristics of information when the bit rate is as low as possible and restore the natural clear speech as clear as possible in the receiving end. At present, The Commonly used coding method can be divided into waveform encoding, encoding parameters coding and mixed coding.

This issue focuses on speech and data compression, as well as the common speech and data encoding method, the features of speech transmission in sensor networks and such as corresponding speech coding. The issue also discussed the voice data compression coding Huffman coding and run-length coding algorithm principle and its implementation process.

Key words: data compression; speech encoding; sensor networks; Huffman encoding;

run-length encoding