When the beam from a laser vibration interferometer is optically raster scanned over a vibrating surface a phase sensitive detector provides velocity information at any phase of the motion. This data is digitally processed and hard copy print gives a 3-D isometric view of the complete vibrating surfaces of the test object frozen in time.

Authors: Bank, G.; Hathaway, G. T.
Affiliation: Celestion, Ipswich, England
AES Convention: 66 (May 1980) Paper Number: 1658
Publication Date: May 1, 1980

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