| Autor: |
Kelsey Dudziak, Jeremy Webster, Richard Raspet, Jason Beam |
| Rok vydání: |
2010 |
| Předmět: |
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| Zdroj: |
The Journal of the Acoustical Society of America. 127:2038-2038 |
| ISSN: |
0001-4966 |
| DOI: |
10.1121/1.3385358 |
| Popis: |
Large wind noise reduction outdoors can be achieved by the use of metal foam layers mounted flush with the surface. In this research, a triangular array for source direction determination is mounted under different thickness metal foams. The performance of the array in locating a spark source is determined by measurements with and without metal foam covers. The performance is quantified by agreement with the actual direction and by the chi squared values of the fit to the direction and the speed of sound. Some geometries produced large errors in speed of sound but the corresponding directions were reasonably accurate. Relatively thin layers of metal foam produced accurate estimates for the direction and sound speed. With the microphones mounted just under a 0.5‐in.‐thick foam, the direction could be measured to within a few degrees. [This work is funded by the Armaments Research, Development, and Engineering Command (ARDEC)]. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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