发明名称 |
A METHOD AND SYSTEM FOR NOISE CANCELLATION |
摘要 |
A noise cancellation signal is generated based on detected ambient noise, such that the noise cancellation signal and a wanted sound signal can be applied to a speaker. Gain control is applied to the wanted sound signal based on a comparison between the detected ambient noise level and the wanted sound signal level, for example such that the level of the wanted sound signal after the gain has been applied exceeds the level of a detected ambient noise signal by a certain threshold. Steps may also be taken such that the total level of the wanted sound signal after the gain has been applied and of the detected ambient noise signal do not exceed a second threshold, to avoid saturating the speaker to which they are applied. |
申请公布号 |
WO2010094966(A3) |
申请公布日期 |
2011.04.21 |
申请号 |
WO2010GB50277 |
申请日期 |
2010.02.18 |
申请人 |
WOLFSON MICROELECTRONICS PLC;AL-NAIMI, KHALDOON TAHA;DOBSON, ROBERT |
发明人 |
AL-NAIMI, KHALDOON TAHA;DOBSON, ROBERT |
分类号 |
G10K11/178;G10L21/02;G10L21/0232 |
主分类号 |
G10K11/178 |
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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