摘要
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,文中介紹一种基于最大互相关搜索法的MP-LPC编码方案。该方案引入了分块搜索和脉冲优化处理等措施,使得计算量大量减少,语音质量得到提高。用一片TMS32020 DSP实现了9.6k bps的MP-LPC编译码器,其语音质量达56k bps标准PCM。
Multi-pulse excited linear predicative coding (MP-LPC) is a newly developed speech compression method. A multi-pulse LPC scheme based on maximum crosscorrelation pulse search agorithm is described here. In this scheme, a simple block pulse search agorithm and a optimzation of pulse amplitude is adapted, which reduce large amount calculation and MP-LPC codec is implemented on a single chip of TMS 320 20 DSP. The speech quality of this codec is approaching that of 56 k bit/s PCM codec
出处
《电子科技大学学报》
EI
CAS
CSCD
北大核心
1992年第4期386-390,共5页
Journal of University of Electronic Science and Technology of China
关键词
语音处理
编译码器
信号处理
传输
speech processing
codec
signal processing
data transmision
