发明名称 |
SYSTEMS AND METHODS FOR FEEDBACK DETECTION |
摘要 |
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. |
申请公布号 |
US2015172815(A1) |
申请公布日期 |
2015.06.18 |
申请号 |
US201414192634 |
申请日期 |
2014.02.27 |
申请人 |
QUALCOMM Incorporated |
发明人 |
Park Hyun Jin;Challa Deepak Kumar |
分类号 |
H04R3/02 |
主分类号 |
H04R3/02 |
代理机构 |
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代理人 |
|
主权项 |
1. A method for feedback detection by an electronic device, comprising:
receiving a first microphone signal by a first microphone, wherein a feedback loop comprises the first microphone and a speaker; receiving a second microphone signal by a second microphone that is outside of the feedback loop, wherein 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; determining a correlation based on the first microphone signal and the second microphone signal; and determining whether feedback is occurring based on the correlation. |
地址 |
San Diego CA US |