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    • 5. 发明授权
    • Sound monitoring system for sound field selection based on stored microphone data
    • 基于存储的麦克风数据进行声场选择的声音监控系统
    • US08682675B2
    • 2014-03-25
    • US12893114
    • 2010-09-29
    • Masahito TogamiYohei Kawaguchi
    • Masahito TogamiYohei Kawaguchi
    • H04R1/32
    • H04R29/005H04R1/406H04R3/005H04R2201/403
    • Monitoring accuracy degrades due to a noise where many sound sources exist other than those to be monitored. A sound monitoring system includes a microphone array having multiple microphones and a location-based abnormal sound monitoring section. The location-based abnormal sound monitoring section is supplied with an input signal from the microphone array via a waveform acquisition section and a network. Using the input signal, the location-based abnormal sound monitoring section detects a temporal change in a sound source direction histogram. Based on a detected change result, the location-based abnormal sound monitoring section checks for abnormality in a sound field and outputs a monitoring result. The processing section searches for a microphone array near the sound source to be monitored. The processing section selects a sound field monitoring function for the sound source to be monitored based on various data concerning a microphone belonging to the searched microphone array.
    • 由于存在许多声源的噪声,监测精度会因监测的不同而降低。 声音监视系统包括具有多个麦克风的麦克风阵列和基于位置的异常声音监视部分。 基于位置的异常声音监测部分经由波形获取部分和网络被提供有来自麦克风阵列的输入信号。 使用输入信号,基于位置的异常声音监视部检测声源方向直方图的时间变化。 基于检测到的改变结果,基于位置的异常声音监视部检查声场中的异常并输出监视结果。 处理部分搜索要监视的声源附近的麦克风阵列。 处理部根据与属于搜索到的麦克风阵列的麦克风有关的各种数据,选择要监视的声源的声场监视功能。