| Original document(40 pages) 中文版 |
A noise reducing apparatus is disclosed, which includes: input means for inputting multiple audio signals from multiple audio channels; multiple band extracting means for extracting a predetermined band from the multiple audio signals; calculating means for averaging signals from the multiple band extracting means; multiple first level detecting means for detecting the signal levels in a predetermined period of time of the signals from the multiple band extracting means; second level detecting means for detecting the signal level in a predetermined period of time of the signal from the calculating means; selecting means for selecting, for each of the predetermined period of times, the signal having the lowest level value of the level values detected by the multiple first level detecting means and the second level detecting means; band limiting means for limiting the band of the signal from the selecting means; and band synthesizing means for band-synthesizing the signal from the band limiting means and the signal in a band, which is not extracted by the multiple band extracting means, for each audio channel, wherein the output of the band synthesizing means is an audio channel output signal. |
Application Number
申请号 |
200610137579 |
Application Date
申请日 |
2006.09.12 |
| Title 名称 |
Noise reducing apparatus, method and program and sound pickup apparatus for electronic equipment |
Publication Number
公开号 |
1933677 |
Publication Date
公开日 |
2007.03.21 |
| Approval Pub. Date |
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Granted Pub. Date |
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| International Classification 分类号 |
H04R3/02;G10L21/02;H04N5/911 |
Applicant(s) Name
申请人 |
Sony Corp. |
| Address 地址 |
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| Inventor(s) Name 发明人 |
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| Attorney & Agent 代理人 |
wangqiang hai chenjing jun |
| More information 更 多 信 息 |
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