| 基于ADPCM、CELP和语音分类的变速率语音压缩编码 |
| |
| 引用本文： | 杨震,毕厚杰.基于ADPCM、CELP和语音分类的变速率语音压缩编码[J].南京邮电大学学报(自然科学版),1998(2). |
| |
| 作者姓名： | 杨震 毕厚杰 |
| |
| 作者单位： | 南京邮电学院信息工程系 |
| |
| 基金项目： | 邮电部高等院校中青年教师科学基金 |
| |
| 摘 要： | 新的通信方式和计算机网络的飞速发展，对语音信号的编码传输提出了新的要求。在新一代的网络中，希望能充分利用信号源的特征和信道的统计复用性，改变以往信源一般输出是恒定速率码流的特点，而以具有不同速率的分层编码和变速编码，作为新的信源编码系统。讨论了基于ＡＤＰＣＭ、ＣＥＬＰ和多类激励的多种变速率编码方案。实验表明，利用语音信号本身特征，达到高压缩比同时具有较高合成语音质量是可能的。
|
| 关 键 词： | 语声信号处理，压缩编码，语声编码 |
Variable Bit Rates Speech Coding Based on ADPCM, CELP and Speech Classification |
| |
| Yang Zhen,Bi Houjie.Variable Bit Rates Speech Coding Based on ADPCM, CELP and Speech Classification[J].Journal of Nanjing University of Posts and Telecommunications,1998(2). |
| |
| Authors: | Yang Zhen Bi Houjie |
| |
| Institution: | Yang Zhen Bi Houjie Department of Information Engineering,Nanjing Institite of Posts and Telecommnications,210003,Nanjing,PRC |
| |
| Abstract: | With the rapid development of telecommunication and computer networks,signal coding systems that have variable output bit rates,so called layered encoders and variable bit rate encoders,have drawn much attention and been widely used in modern networks.This paper discusses such kind of coding systems that are ADPCM ,CELP and speech classification based.Experiments show that high quality speech coding systems can be realized by utilizing the characteristics of speech signals. |
| |
| Keywords: | Speech signal processing Compression coding Speech coding |
| 本文献已被 CNKI 等数据库收录！ |
