发明名称 IMPROVED METHOD FOR DETERMINING THE QUALITY OF A SPEECH SIGNAL
摘要 Objective measurement methods and devices for predicting perceptual quality of speech signals degraded in speech processing/transporting systems have unreliable prediction results in cases where the degraded and reference signals show in between severe timbre differences. Improvement is achieved by applying a partial compensation step within in a signal processing stage using a frequency dependently clipped compensation factor for compensating power differences between the degraded and reference signals in the frequency domain. Preferably clipping values for clipping the compensation factor have larger frequency-dependency in a range of low frequencies with respect to a centre frequency of the human auditory system, than in a range of high frequencies.
申请公布号 WO02101721(A1) 申请公布日期 2002.12.19
申请号 WO2002EP05556 申请日期 2002.05.21
申请人 KONINKLIJKE KPN N.V.;BEERENDS, JOHN, GERARD 发明人 BEERENDS, JOHN, GERARD
分类号 G10L25/69 主分类号 G10L25/69
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