利用相空间重构时间延迟特性进行语音音质分析

Evaluating speech quality based on the time delay of phase space reconstruction

在简要分析相空间重构时间延迟计算方法的基础上,利用复自相关时间延迟计算方法进行了语音信号相空间重构时间延迟的计算分析,通过对比不同信噪比下复自相关-时间延迟曲线,提出了利用时间延迟参数进行语音音质评估的方法,利用BP网络对大量试验数据进行建模,通过统计分析认为该方法具有一定的可行性。

A method to obtain the time delay of phase space reconstruction is introduced, and the time delay in phase space reconstruction of speech signals are computed. A new way of evaluating the speech quality is introduced through contrasting the complex self-correlations and time delay curves of signals of various SNR, which is proven viable by statistically analyzing a large number of examination data.