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    • 5. 发明申请
    • ELECTRONIC APPARATUS FOR GENERATING MODIFIED WIDEBAND AUDIO SIGNALS BASED ON TWO OR MORE WIDEBAND MICROPHONE SIGNALS
    • 用于生成基于两个或更多宽带麦克风信号的修改的宽带音频信号的电子设备
    • WO2012009107A1
    • 2012-01-19
    • PCT/US2011/041145
    • 2011-06-21
    • MOTOROLA MOBILITY, INC.ZUREK, RobertBASTYR, KevinCLARK, JoelIVANOV, Plamen
    • ZUREK, RobertBASTYR, KevinCLARK, JoelIVANOV, Plamen
    • H04R3/00H04R3/14H04R5/04
    • H04R3/005H04R3/14H04R5/04H04R2430/03H04R2430/20H04R2499/11
    • At least two microphones (330, 370) generate wideband electrical audio signals in response to incoming sound waves, and the wideband audio signals are filtered (422, 428, 442, 448) to generate low band signals (423, 443) and high band signals (429, 449). From the low band signals, low band beamformed signals are generated, and the low band beamformed signals are combined with the high band signals to generate modified wideband audio signals. In one implementation, an electronic apparatus is provided that includes a microphone array, a crossover (450), a beamformer module (470), and a combiner module (480). The microphone array has at least two pressure microphones (330, 370) that generate wideband electrical audio signals in response to incoming sound waves. The crossover generates low band signals and high band signals from the wideband electrical audio signals. The beamformer module generates low band beamformed signals from the low band signals. The combiner module combines the high band signals and the low band beamformed signals to generate modified wideband audio signals.
    • 至少两个麦克风(330,370)响应于传入的声波产生宽带电音频信号,并且对宽带音频信号进行滤波(422,428,442,448)以产生低频带信号(423,443)和高频带 信号(429,449)。 从低频带信号,产生低频带波束形成的信号,并将低频带波束形成的信号与高频带信号组合以产生经修正的宽带音频信号。 在一个实现中,提供一种电子设备,其包括麦克风阵列,交叉(450),波束形成器模块(470)和组合器模块(480)。 麦克风阵列具有至少两个压力麦克风(330,370),其响应于输入的声波产生宽带电音频信号。 交叉从宽带电音频信号产生低频带信号和高频带信号。 波束形成器模块从低频信号产生低频波束形成的信号。 组合器模块组合高频带信号和低频带波束形成信号以产生经修改的宽带音频信号。
    • 7. 发明申请
    • MICROPHONE INTERFERENCE DETECTION METHOD AND APPARATUS
    • 麦克风干扰检测方法和装置
    • WO2011162897A1
    • 2011-12-29
    • PCT/US2011/037629
    • 2011-05-24
    • MOTOROLA MOBILITY, INC.IVANOV, Plamen, A.MEHRENS, Scott, A.BASTYR, Kevin, J.CLARK, Joel, A.
    • IVANOV, Plamen, A.MEHRENS, Scott, A.BASTYR, Kevin, J.CLARK, Joel, A.
    • H04R3/00
    • H04R3/04H04R1/08H04R3/005H04R2410/07
    • A method and apparatus for detecting microphone interference includes first and second built-in microphones (111, 115) producing first and second microphone signals. A first filter bank (231) creates first high-frequency-band and first low-frequency-band signals from the first microphone signal. A second filter bank (235) creates second high-frequency-band and second low-frequency-band signals from the second microphone signal. A first measurement calculator (262) 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 (266) 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 (280), coupled to the first measurement calculator and the second measurement calculator, detects microphone interference and produces an output signal (299) indicating microphone occlusion or wind noise.
    • 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(111,115)。 第一滤波器组(231)从第一麦克风信号产生第一高频带和第一低频带信号。 第二滤波器组(235)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(262)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 。 第二测量计算器(266)当第一和第二低频带信号的幅度超过预定阈值时,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(280)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(299)。