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Proceedings Paper

Optical System For Audio Spectrum Analysis
Author(s): Peter D. Poulsen; Irvin P. Vatz
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Paper Abstract

Spectrum analysis at audio frequencies can be achieved using a strobe type optical system. A demonstrator has been fabricated with sensitivity ranging from 0.1 Hz to 10 KHz. The system examines fifty-four frequency bands simultaneously over a two octave region selectable anywhere in the sensitivity range. Resolution of 1/27th octave, in approximately 2.5% frequency steps, is obtained. First applications address diagnostics of mechanical systems for main-tenance purposes.

Paper Details

Date Published: 25 April 1980
PDF: 6 pages
Proc. SPIE 0218, Devices and Systems for Optical Signal Processing, (25 April 1980); doi: 10.1117/12.958521
Show Author Affiliations
Peter D. Poulsen, Science Applications, Incorporated (United States)
Irvin P. Vatz, Science Applications, Incorporated (United States)


Published in SPIE Proceedings Vol. 0218:
Devices and Systems for Optical Signal Processing
Timothy C. Strand; Armand R. Tanguay, Editor(s)

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