专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20110317848A1 Microphone Interference Detection Method and Apparatus 审中-公开
标题翻译：麦克风干扰检测方法及装置
公开(公告)号：US20110317848A1
公开(公告)日：2011-12-29
申请号：US12822176
申请日：2010-06-23
申请人： Plamen A. Ivanov , Scott A. Mehrens , Kevin J. Bastyr , Joel A. Clark
发明人： Plamen A. Ivanov , Scott A. Mehrens , Kevin J. Bastyr , Joel A. Clark
IPC分类号： H04B15/00
CPC分类号： H04R3/04 , H04R1/08 , H04R3/005 , H04R2410/07
摘要： 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.
摘要翻译：用于检测麦克风干扰的方法和装置包括产生第一和第二麦克风信号的第一和第二内置麦克风。第一滤波器组从第一麦克风信号创建第一高频带和第一低频带信号。第二滤波器组从第二麦克风信号产生第二高频带和第二低频带信号。当第一和第二高频带信号的幅度超过预定阈值时，第一测量计算器确定来自第一高频带信号和第二高频带信号的高频带能量值。当第一和第二低频带信号的幅度超过预定阈值时，第二测量计算器从第一低频带信号和第二低频带信号计算低频带能量值。耦合到第一测量计算器和第二测量计算器的逻辑控制块检测麦克风干扰并产生指示麦克风闭塞或风噪声的输出信号。

IPRDB

热门服务

关于我们

友情链接

联系方式