| 摘要 |
Method and apparatus for locating and quantifying sound sources using an array of acoustic vector probes ( 200 ). Signals received at the probes are converted to digital form and fed into a digital signal processor ( 400 ) which computes the sound pressure and the sound-intensity vector at each probe. The set of sound-intensity vectors measured by the array provides a set of directions to a sound source ( 100 ) whose approximate spatial coordinates are determined using a least-squares triangulation formula. The sound-intensity vectors also determine sound-power flow from the source. In addition sound pressure measured by the probes can be phased to form a sensitivity beam ( 250 ) for scanning a source. Sound-intensity measurements made concurrently can be used to determine the spatial coordinates of the part being scanned and the sound power radiated by that part. Results are displayed on a computer screen or other device ( 500 ) permitting an operator to interact with and control the apparatus. Additional related features and methods are disclosed.
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