发明名称 |
SPEAKER DAMAGE PREVENTION IN ADAPTIVE NOISE-CANCELING PERSONAL AUDIO DEVICES |
摘要 |
<p>A personal audio device, such as a wireless telephone, includes noise canceling circuit that adaptively generates an anti-noise signal from a reference microphone signal and injects the anti-noise signal into the speaker or other transducer output to cause cancellation of ambient audio sounds. A processing circuit monitors a level of the anti-noise signal, determines that the anti-noise signal may cause damage to the transducer and adjusts the generation of the anti-noise signal such that damage to the transducer is prevented.</p> |
申请公布号 |
EP2715721(A2) |
申请公布日期 |
2014.04.09 |
申请号 |
EP20120728866 |
申请日期 |
2012.05.11 |
申请人 |
CIRRUS LOGIC, INC. |
发明人 |
KWATRA, NITIN;HENDRIX, JON, D. |
分类号 |
G10K11/178 |
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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