公开(公告)号：EP3084756A1

公开(公告)日：2016-10-26

申请号：EP14827306.3

申请日：2014-12-10

Applicant: Qualcomm Incorporated

Inventor： PARK, Hyun Jin ,  CHALLA, Deepak Kumar

IPC: G10K11/178 ,  H04R3/02 ,  H04R25/00

CPC classification number: H04R3/02 ,  G10K11/17819 ,  G10K11/17833 ,  G10K2210/3026 ,  G10K2210/3027 ,  G10K2210/3056 ,  H04R25/453 ,  H04R2460/01

Abstract: A method for feedback detection by an electronic device is described. The method includes receiving a first microphone signal by a first microphone. A feedback loop includes the first microphone and a speaker. The method also includes receiving a second microphone signal by a second microphone that is outside of the feedback loop. A first signal based on the first microphone signal and a second signal based on the second microphone signal exhibit a higher correlation in presence of feedback and exhibit a lower correlation in absence of feedback. The method further includes determining a correlation based on the first microphone signal and the second microphone signal. The method additionally includes determining whether feedback is occurring based on the correlation.

Abstract translation: 描述了一种由电子设备进行反馈检测的方法。 该方法包括由第一麦克风接收第一麦克风信号。 反馈回路包括第一麦克风和扬声器。 该方法还包括通过在反馈回路外部的第二麦克风接收第二麦克风信号。 基于第一麦克风信号的第一信号和基于第二麦克风信号的第二信号在存在反馈时表现出更高的相关性，并且在没有反馈的情况下表现出较低的相关性。 该方法还包括基于第一麦克风信号和第二麦克风信号来确定相关性。 该方法还包括基于相关性确定反馈是否正在发生。