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Frequency-Discriminating Acoustic-Event Counter
- Source :
- NASA Tech Briefs. 9(2)
- Publication Year :
- 1985
- Publisher :
- United States: NASA Center for Aerospace Information (CASI), 1985.
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Abstract
- Broadband events rejected. Acoustic-event counter discriminates against signals that simultaneously exceed preset amplitude thresholds in both low and high-frequency bands of its spectrum. Counter acts as spectral analyzer for mechanical vibrations. In combination with broadband acoustic transducer discriminates between signals and noise in acoustical destructive or nondestructive testing, vibration monitoring for machinery, burglar alarms, and other monitoring/warning systems.
- Subjects :
- Electronic Systems
Subjects
Details
- Language :
- English
- ISSN :
- 0145319X
- Volume :
- 9
- Issue :
- 2
- Database :
- NASA Technical Reports
- Journal :
- NASA Tech Briefs
- Publication Type :
- Report
- Accession number :
- edsnas.19850000160
- Document Type :
- Report