语音信号的线性预测分析在DSP上的优化实现

Optimization implementation of the linear predictive coding analysis for speech signal on DSP

语音信号的线性预测分析是语音压缩中的一个重要环节,占据语音压缩计算中的大部分时间,为提高语音压缩的速度,在C54x系列DSP上用汇编语言实现了语音信号的线性预测分析,并对其进行优化。最终可以使代码的运行时间减少到原来的5%左右。

The Linear Predictive Coding （PLC） analysis of speech signal is an important part in speech coding, it takes the most time in speech coder calculating, in order to improve the speed of speech coding, LPC analysis was implemented in assembly language based on the C54x DSP and optimized in this paper, Compared with the original method, the nm time of the coder can be reduced to 5 %.