用于客观音质评价的扩展巴克谱失真测度

Extensive Bark Spectral Distortion Measurement for Objective Speech Quality Assessment

摘要: 扩展巴克谱失真测度应用同时性掩蔽效应,可以充分反映听觉系统的感知特性,在巴克谱失真距离的计算中排除被噪声掩蔽门限掩蔽的临界频带。研究中对噪声掩蔽门限进行了尺度伸缩调整,扩展巴克谱失真测度和巴克谱测度对比实验分析也印证了所提出的测度的良好性能。对汉语通信系统进行的客观音质评价,不仅具有较好的普适性,而且主客观评价结果之间具有更高的相关系数,相关度达到0.969。

Abstract: The performance of the Extensive Bark Spectral Distortion EBSD measure is examined for speech data with coding distortions by varying the scaling the noise masking threshold and omitting the spreading function in noise masking threshold calculation. Some comparative experiment results of the EBSD and Bark Spectral Distortion(BSD) show that the EBSD has better performance than BSD in Chinese communication channels, and the correlation coefficient reaches 0.969.