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 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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