公开(公告)号：US09099077B2

公开(公告)日：2015-08-04

申请号：US13369011

申请日：2012-02-08

申请人： Guy C. Nicholson ,  Cyril Labidi ,  Simon E. Jordan ,  Jae H. Lee

发明人： Guy C. Nicholson ,  Cyril Labidi ,  Simon E. Jordan ,  Jae H. Lee

IPC分类号： G10K11/178

CPC分类号： G10K11/1782 ,  G10K11/178 ,  G10K2210/1081 ,  G10K2210/3016

摘要： Active noise cancellation (ANC) circuitry is coupled to the input of an earpiece speaker in a portable audio device, to control the ambient acoustic noise outside of the device and that may be heard by a user of the device. A microphone is to pickup sound emitted from the earpiece speaker, as well as the ambient acoustic noise. Control circuitry deactivates the ANC in response to determining that an estimate of how much sound emitted from the earpiece speaker has been corrupted by noise indicates insufficient corruption by noise. In another embodiment, the ANC decision is in response to determining that an estimate of the ambient acoustic noise level is greater than an estimate of the anti-noise produced by the ANC. Other embodiments are also described and claimed.

摘要翻译： 有源噪声消除（ANC）电路耦合到便携式音频设备中的耳机扬声器的输入，以控制设备外部的环境声学噪声，并且可以由设备的用户听到。 麦克风是用于拾取从耳机扬声器发出的声音以及环境噪声。 响应于确定从耳机扬声器发射的声音被噪声破坏的响应，控制电路使ANC取消激活，表明噪声不足。 在另一实施例中，ANC决定是响应于确定环境声学噪声电平的估计大于由ANC产生的抗噪声的估计。 还描述和要求保护其他实施例。

公开(公告)号：US20120140917A1

公开(公告)日：2012-06-07

申请号：US13369011

申请日：2012-02-08

申请人： Guy C. Nicholson ,  Cyril Labidi ,  Simon E. Jordan ,  Jae H. Lee

发明人： Guy C. Nicholson ,  Cyril Labidi ,  Simon E. Jordan ,  Jae H. Lee

IPC分类号： G10K11/16 ,  H04M1/00

CPC分类号： G10K11/1782 ,  G10K11/178 ,  G10K2210/1081 ,  G10K2210/3016

摘要： Active noise cancellation (ANC) circuitry is coupled to the input of an earpiece speaker in a portable audio device, to control the ambient acoustic noise outside of the device and that may be heard by a user of the device. A microphone is to pickup sound emitted from the earpiece speaker, as well as the ambient acoustic noise. Control circuitry deactivates the ANC in response to determining that an estimate of how much sound emitted from the earpiece speaker has been corrupted by noise indicates insufficient corruption by noise. In another embodiment, the ANC decision is in response to determining that an estimate of the ambient acoustic noise level is greater than an estimate of the anti-noise produced by the ANC. Other embodiments are also described and claimed.

摘要翻译： 有源噪声消除（ANC）电路耦合到便携式音频设备中的耳机扬声器的输入，以控制设备外部的环境声学噪声，并且可以由设备的用户听到。 麦克风是用于拾取从耳机扬声器发出的声音以及环境噪声。 响应于确定从耳机扬声器发射的声音被噪声破坏的响应，控制电路使ANC取消激活，表明噪声不足。 在另一实施例中，ANC决定是响应于确定环境声学噪声电平的估计大于由ANC产生的抗噪声的估计。 还描述和要求保护其他实施例。