发明名称 |
PROCEDURE FOR PROCESSING NOISY SPEECH SIGNALS, AND APPARATUS AND COMPUTER PROGRAM THEREFOR |
摘要 |
<p>Provided are a noise state determination method and an apparatus and a computer readable recording medium therefor. A noisy speech signal processing method according to the present invention includes calculating a transformed spectrum by transforming an input noisy speech signal to a frequency domain; calculating a smoothed magnitude spectrum by reducing magnitude differences of the transformed spectrum between neighboring frames; calculating a search spectrum which represents an estimated noise component of the smoothed magnitude spectrum; and calculating an identification ratio which represents a ratio of a noise component included in the input noisy speech signal, by using the smoothed magnitude spectrum and the search spectrum. Since a small amount of calculation is required and a large-capacity memory is not required, the present invention may be easily implemented as hardware or software. Also, since an adaptive operation is performed with respect to each frequency sub-band, the accuracy of determining a noise state may be improved.</p> |
申请公布号 |
WO2009123387(A1) |
申请公布日期 |
2009.10.08 |
申请号 |
WO2008KR06999 |
申请日期 |
2008.11.27 |
申请人 |
TRANSONO INC.;JUNG, SUNG IL;HA, DONG GYUNG |
发明人 |
JUNG, SUNG IL;HA, DONG GYUNG |
分类号 |
G10L15/20 |
主分类号 |
G10L15/20 |
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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