Title :
Objective assessment of speech quality by combining Bark- and Mel-scale frequency
Author :
Chen, Honghong ; Zhang, Wei-Qing ; Liu, Jia ; Yuan, Qingsheng
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing, China
Abstract :
Perceptual evaluation of speech quality (PESQ, ITU-T P.862) is a well known objective method for speech quality assessment. PESQ applies Bark-scale frequency to estimate the mean opinion score (MOS) for end-to-end speech quality assessment of narrow-band telephone networks and speech codec. This paper discusses a new objective estimation method by combining Bark-scale and Mel-scale frequency to improve the accuracy of PESQ. The objective assessment based on Mel-scale frequency is presented by following the PESQ framework and then they are combined together through score fusion. Experiment results shows that the objective score of the estimation method using Mel-scale frequency alone has good correlation with the subjective score. Comparative results show improvement in cases where Bark-scale frequency is combined with Mel-scale frequency.
Keywords :
speech codecs; speech processing; Bark-scale frequency; Mel-scale frequency; end-to-end speech quality assessment; mean opinion score; objective assessment; perceptual evaluation; speech codec; Bark-scale frequency; Mel-scale frequency; mean opinion score (MOS); perceptual evaluation of speech quality (PESQ); perceptual models;
Conference_Titel :
Signal Processing (ICSP), 2010 IEEE 10th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-5897-4
DOI :
10.1109/ICOSP.2010.5655032