Several methods have been used to locate multiple sound sources on a line such as a tube or a pipe by using many sensor outputs. It is difficult, however, to locate sound sources accurately when the source sounds are correlated with each other and/or when the signal-to-noise ratio is low. By using the least mean square criterion, it is necessary to solve the under-determined normal equation to estimate the sound power and the waveform radiating from each assumed sound source. Therefore, we propose a new method to solve the equation by applying a tapering window to the singular-value-decomposition technique. These principles are confirmed experimentally. The proposed method is applicable to the diagnosis of piping by estimating the positions of holes from which streams of liquid or a gas are leaking.
|Number of pages||6|
|Journal||American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP|
|Publication status||Published - 1989 Dec 1|
|Event||Seismic Engineering - 1989: Design, Analysis, Testing, and Qualification Methods - Honolulu, HI, USA|
Duration: 1989 Jul 23 → 1989 Jul 27
ASJC Scopus subject areas
- Mechanical Engineering