发明名称 |
Enhancing speech intelligibility using variable-rate time-scale modification |
摘要 |
The method and preprocessor enhances the intelligibility of narrowband speech without essentially lengthening the overall time duration of the signal. Both spectral enhancements and variable-rate time-scaling procedures are implemented to improve the salience of initial consonants, particularly the perceptually important formant transitions. Emphasis is transferred from the dominating vowel to the preceding consonant through adaptation of the phoneme timing structure. In a further embodiment, the technique is applied as a preprocessor to a speech coder.
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申请公布号 |
US7065485(B1) |
申请公布日期 |
2006.06.20 |
申请号 |
US20020042880 |
申请日期 |
2002.01.09 |
申请人 |
AT&T CORP |
发明人 |
CHONG-WHITE NICOLA R.;COX RICHARD VANDERVOORT |
分类号 |
G10L11/06;G10L13/06;G10L19/00;G10L21/00 |
主分类号 |
G10L11/06 |
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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