发明名称 |
AUDIO SIGNAL PROCESSING SYSTEM AND AUDIO SIGNAL PROCESSING METHOD |
摘要 |
An audio signal processing system including a time-frequency conversion unit which converts an audio signal in time domain into frequency domain in frame units so as to calculate a frequency spectrum of the audio signal, a spectral change calculation unit which calculates an amount of change between a frequency spectrum of a first frame and a frequency spectrum of a second frame before the first frame based on the frequency spectrum of the first frame and the frequency spectrum of the second frame, and a judgment unit which judges the type of the noise which is included in the audio signal of the first frame in accordance with the amount of spectral change. |
申请公布号 |
US2012095755(A1) |
申请公布日期 |
2012.04.19 |
申请号 |
US201113330100 |
申请日期 |
2011.12.19 |
申请人 |
OTANI TAKESHI;TOGAWA TARO;SUZUKI MASANAO;OTA YASUJI;FUJITSU LIMITED |
发明人 |
OTANI TAKESHI;TOGAWA TARO;SUZUKI MASANAO;OTA YASUJI |
分类号 |
G10L21/02;G10L21/0208;G10L21/0216;G10L25/00;G10L25/18;G10L25/93 |
主分类号 |
G10L21/02 |
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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