基于加权巴克谱失真的语音质量客观评价算法

提出了一种基于加权巴克谱失真（WBSD）的语音质量客观评价算法。鉴于不同巴克带谱失真对语音质量的影响程度不同，该算法提出在巴克域中对不同巴克带谱失真进行加权来求失真语音的客观失真测度。并且通过分析改进型巴克谱失真测度（MBSD）中15个巴克带失真与平均意见分（MOS）间的相关度，提出了一组以相关系数幂次方为权重的有效巴克谱失真权重矢量。实验结果表明：与MBSD算法相比，WBSD在算法复杂度没有明显增加的情况下与MOS的相关度提高了3％。

Objective Speech Quality Evaluation Based on Weighted Bark Spectral Distortion

A new objective speech quality evaluation method based on weighted Bark spectral distortion(WBSD) is presented.Because each of the Bark band distortion has different effects on the degraded speech quality,this paper proposes the calculation of the objective distortion measurement based on the weighted Bark spectral distortion in the Bark domain.By the analysis of the correlation between each 15 Bark band distortion used in MBSD and mean opinion score(MOS),an effective Bark spectral distortion weight vector based on the power of each Bark band correlation coefficient is also presented.Experimental result shows that,compared with MBSD,WBSD in the correlation with MOS increases 3% as the calculation complexity does not increase.