MICROPHONE INTERFERENCE DETECTION METHOD AND APPARATUS
摘要
<p>A method and apparatus for detecting microphone interference includes first and second built-in microphones producing first and second microphone signals. A first filter bank creates first high-frequency-band and first low-frequency-band signals from the first microphone signal. A second filter bank creates second high-frequency-band and second low-frequency-band signals from the second microphone signal. A first measurement calculator determines a high-frequency-band energy value from the first high-frequency-band signal and the second high-frequency-band signal when the first and second high-frequency-band signals' magnitudes exceeds predetermined thresholds. A second measurement calculator calculates a low-frequency-band energy value from the first low-frequency-band signal and the second low-frequency-band signal when the first and second low-frequency-band signals' magnitudes exceed predetermined thresholds. A logic control block, coupled to the first measurement calculator and the second measurement calculator, detects microphone interference and produces an output signal indicating microphone occlusion or wind noise.</p>
申请公布号
EP2586218(A1)
申请公布日期
2013.05.01
申请号
EP20110724107
申请日期
2011.05.24
申请人
MOTOROLA MOBILITY LLC
发明人
IVANOV, PLAMEN, A.;MEHRENS, SCOTT, A.;BASTYR, KEVIN, J.;CLARK, JOEL, A.