公开(公告)号：US20140314246A1

公开(公告)日：2014-10-23

申请号：US13924935

申请日：2013-06-24

Applicant: Cirrus Logic, Inc.

Inventor： Ryan A. Hellman

IPC: G10K11/16

CPC classification number: G10K11/16 ,  G10K11/178 ,  G10K11/17817 ,  G10K11/1785 ,  G10K11/17885 ,  G10K2210/1081 ,  G10K2210/3017 ,  G10K2210/3022 ,  G10K2210/3026 ,  G10K2210/3027

Abstract: In accordance with systems and methods of this disclosure, a method may include generating a feedforward anti-noise signal component from a result of measuring with the reference microphone countering the effects of ambient audio sounds at an acoustic output of a transducer by filtering an output of the reference microphone, adaptively generating a feedback anti-noise signal component from a result of measuring with an error microphone for countering the effects of ambient audio sounds at the acoustic output of the transducer by adapting a response of a feedback adaptive filter that filters a synthesized reference feedback to minimize the ambient audio sounds in the error microphone signal, wherein the synthesized reference feedback is based on a difference between the error microphone signal and the feedback anti-noise signal component.

Abstract translation: 根据本公开的系统和方法，一种方法可以包括从参考麦克风的测量结果中产生前馈抗噪声信号分量，该参考麦克风通过对传感器的声输出的环境音频声音的影响进行滤波， 参考麦克风，通过使用误差麦克风测量结果自适应地产生反馈抗噪声信号分量，用于通过调整反馈自适应滤波器的响应来抵消在换能器的声输出处的环境音频声音的影响， 参考反馈以最小化误差麦克风信号中的环境音频声音，其中合成的参考反馈基于误差麦克风信号和反馈抗噪声信号分量之间的差异。

公开(公告)号：US09478210B2

公开(公告)日：2016-10-25

申请号：US13924935

申请日：2013-06-24

Applicant: Cirrus Logic, Inc.

Inventor： Ryan A. Hellman

IPC: G10K11/00 ,  G10K11/16 ,  G10K11/178

CPC classification number: G10K11/16 ,  G10K11/178 ,  G10K11/17817 ,  G10K11/1785 ,  G10K11/17885 ,  G10K2210/1081 ,  G10K2210/3017 ,  G10K2210/3022 ,  G10K2210/3026 ,  G10K2210/3027

Abstract: In accordance with systems and methods of this disclosure, a method may include generating a feedforward anti-noise signal component from a result of measuring with the reference microphone countering the effects of ambient audio sounds at an acoustic output of a transducer by filtering an output of the reference microphone, adaptively generating a feedback anti-noise signal component from a result of measuring with an error microphone for countering the effects of ambient audio sounds at the acoustic output of the transducer by adapting a response of a feedback adaptive filter that filters a synthesized reference feedback to minimize the ambient audio sounds in the error microphone signal, wherein the synthesized reference feedback is based on a difference between the error microphone signal and the feedback anti-noise signal component.

Abstract translation: 根据本公开的系统和方法，一种方法可以包括从参考麦克风的测量结果中产生前馈抗噪声信号分量，该参考麦克风通过对传感器的声输出的环境音频声音的影响进行滤波， 参考麦克风，通过使用误差麦克风测量结果自适应地产生反馈抗噪声信号分量，用于通过调整反馈自适应滤波器的响应来抵消在换能器的声输出处的环境音频声音的影响， 参考反馈以最小化误差麦克风信号中的环境音频声音，其中合成的参考反馈基于误差麦克风信号和反馈抗噪声信号分量之间的差异。