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    • 5. 发明申请
    • FAILURE DETECTION SYSTEM AND FAILURE DETECTION METHOD
    • 故障检测系统和故障检测方法
    • US20160037277A1
    • 2016-02-04
    • US14809354
    • 2015-07-27
    • PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    • Hiroyuki MATSUMOTOShuichi WATANABEToshimichi TOKUDAHisashi TSUJIAkitoshi IZUMIShintaro YOSHIKUNI
    • H04R29/00
    • H04R29/004
    • A failure detection system includes an omnidirectional microphone array device having a plurality of microphone elements and a directivity control device that calculates a delay time of a voice propagated from a sound source to each microphone element and forms a directivity of the voice using the delay time and the voice collected by the omnidirectional microphone array device, and detects a failure of the microphone element. A smoothing unit calculates an average power of one microphone element. An average calculator calculates a total average power of a plurality of usable microphone elements included in the omnidirectional microphone array device. A comparison unit compares whether or not a difference between the average power and the total average power exceeds a range of ±6 dB, and determines whether the microphone element is in failure based on the comparison result.
    • 故障检测系统包括具有多个麦克风元件的全向麦克风阵列装置和方向性控制装置,其计算从声源传播到每个麦克风元件的声音的延迟时间,并使用延迟时间形成声音的方向性, 由全向麦克风阵列装置收集的声音,并且检测麦克风元件的故障。 平滑单元计算一个麦克风元件的平均功率。 平均计算器计算包括在全向麦克风阵列装置中的多个可用麦克风元件的总平均功率。 比较单元比较平均功率和总平均功率之间的差是否超过±6dB的范围,并且基于比较结果来确定麦克风元件是否失效。