发明授权
US06324290B1 Method and apparatus for diagnosing sound source and sound vibration source
失效
用于诊断声源和声音振动源的方法和装置
- 专利标题: Method and apparatus for diagnosing sound source and sound vibration source
- 专利标题(中): 用于诊断声源和声音振动源的方法和装置
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申请号: US08949759申请日: 1997-10-14
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公开(公告)号: US06324290B1公开(公告)日: 2001-11-27
- 发明人: Kazutomo Murakami , Keiichiro Mizuno , Hirokazu Kudoh
- 申请人: Kazutomo Murakami , Keiichiro Mizuno , Hirokazu Kudoh
- 优先权: JP6-636931 19940308
- 主分类号: H04R300
- IPC分类号: H04R300
摘要:
Acoustics or vibrations at a plurality of predetermined positions are respectively detected in the form of analog values, and the detected analog values are respectively converted into digital values. The digital values are subjected to digital filtering by using the digital values and filter factors, and at least one of the filter factors is changed such that the difference between the total sum of the results of digital filtering and a targeted value becomes minimum. The rate of contribution to an evaluation point is computed by using the results of digital filtering within a predetermined time when the difference becomes minimum, and the computed rate of contribution is displayed.