公开(公告)号：US20140307890A1

公开(公告)日：2014-10-16

申请号：US13952221

申请日：2013-07-26

Applicant: Cirrus Logic, Inc.

Inventor： Dayong Zhou ,  Yang Lu ,  Ning Li

IPC: G10K11/16

CPC classification number: H04R3/002 ,  G10K11/16 ,  G10K11/178 ,  G10K11/17817 ,  G10K11/17833 ,  G10K2210/108 ,  G10K2210/1081 ,  G10K2210/3017 ,  G10K2210/3022 ,  G10K2210/3026 ,  G10K2210/3027 ,  G10K2210/3035 ,  G10K2210/3039 ,  G10K2210/3055 ,  G10K2210/3056 ,  G10K2210/503 ,  G10K2210/509

Abstract: In accordance with methods and systems of the present disclosure, a processing circuit may implement at least one of: a feedback filter having a response that generates at least a portion of an anti-noise component from a playback corrected error, the playback corrected error based on a difference between the error microphone signal and a secondary path estimate; and a feedforward filter having a response that generates at least a portion of the anti-noise signal from a reference microphone signal. The processing circuit may also implement a secondary path estimate filter configured to model an electro-acoustic path of a source audio signal and have a response that generates a secondary path estimate from the source audio signal and a secondary path estimate performance monitor for monitoring performance of the secondary path estimate filter in modeling the electro-acoustic path.

Abstract translation: 根据本公开的方法和系统，处理电路可以实现以下至少一个：具有响应的反馈滤波器，该响应从回放校正误差产生抗噪声分量的至少一部分，基于回放校正误差 在误差麦克风信号和次路径估计之间的差异; 以及前馈滤波器，其具有从参考麦克风信号产生抗噪声信号的至少一部分的响应。 处理电路还可以实现二次路径估计滤波器，其被配置为对源音频信号的电声路径进行建模，并且具有从源音频信号生成次路径估计的响应，以及用于监视源音频信号的次级路径估计性能监视器 二次路径估计滤波器对电声路径进行建模。