） 摘要： 本文介绍了基于TI公司DSK6416开发平台的低码率语音算法G
723
1编解码的实时实现
接着着重介绍了G
723
1编解码算法在DSK6416上实现的硬件环境
之后介绍了G
723
1的C语言源码的优化方法以缩短编解码周期
首先简要介绍了G
723
1的编解码原理和DSK6416的组成部分
G
723
1是ITU-T组织于1996年推出的用于多媒体通信的双速率语音算法
DSK6416是TI公司推出的DSP开发套件
可用于语音算法的实时实现
） Abstract： This paper introduced the real-time implementation of coding and decoding of law bit rate speech algorithm G
723
1 based on Texas Instruments (TI) DSK6416
G
723
1 proposed by ITU-T in 1996 is a dual rate speech algorithm used for media communication, which can work in both 5
3kbit/s and 6
3k bit/s
DSK6416 is a DSP develop kit provided by TI, in which the frequency of high performance fixed point DSP chip is up to 1G HZ
So DSK6416 is suitable for real-time implementation of speech codec
The coding and decoding principle of G
723
1 and the component of DSK6416 were briefly introduced at first
Then the hardware environment and system flow of coding and decoding algorithm of G
723
1 was mainly described
The scheme of transferring speech signal by EDMA was described to reduce the load on DSP core and can be used for multi-channel speech codec
Then the method of optimizing the source C code of G
723
1 was introduced to shortening coding and decoding cycle
Finally, the real-time playing back of speech signal was realized and the sound quality was good
Keywords： G
723
1;DSK6416;Optimizing method;Speech codec 下载PDF阅读器 PDF全文下载： 初稿 （ 183 ） 作者简介： 通信联系人： 【收录情况】 中国科技论文在线： 胡频
