摘要
本文主要讨论使用一种加权倒谱距离测量对通信系统或通信设备的话音质量进行客观音质评价。它是在使用LPC倒谱距离评价普通话语音质量的基础上发展起来的。这种度量方法是利用倒谱系数方差的倒数做权的一种统计加权距离度量。实验结果表明:这种加权倒谱距离度量结果优于LPC倒谱距离及其它度量方法。
This paper describes briefly a weighted cepstral distance measure for objective quality evaluation of Mandarin to facilitate the test of speech communication systems. It is proposed based on the LPC cepstral distance measure. The measure is a statistically weighted distance measure with weights equal to the inverse variance of the cepstral coefficients. The experimental results show that the weighted cepstral distance measure works substantially better than LPC cepstral distance measure and other measures.
出处
《北京大学学报（自然科学版）》
CAS
CSCD
北大核心
1992年第3期316-320,共5页
Acta Scientiarum Naturalium Universitatis Pekinensis
关键词
客观音质评价
语言通信系统
普通话
Objective quality evaluation
Cepstral distance measure
Weighted cepstral distance measure
