| 摘要 |
PROBLEM TO BE SOLVED: To calculate a vibration propagation characteristic between a vibration source and a response point and a sound pressure propagation characteristic between a sound source and the response point. SOLUTION: A vibration detection signal is output from an acceleration sensor 52(i) to a vibration normalizing section 96a via an FFT 54(i) and a matrix forming means 56, and is normalized by the vibration normalizing section 96a. While, a sound pressure detection signal is output from a sound pressure detecting means 90(k) to a sound pressure normalizing section 96b via an FFT 92(k) and a matrix forming means 94, and is normalized by the sound pressure normalizing section 96b. The normalized vibration detection signal and sound pressure detection signal are output to a singular value decomposition section 66 via a matrix forming section 57, and is decomposed with a singular value in the singular value decomposition section 66. COPYRIGHT: (C)2007,JPO&INPIT
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