Simple Estimation of Sound Source Directivity in Diffused Acoustic Field: Numerical Simulation
The directivity of an underwater sound source should be measured in an acoustically open field such as a calm sea or lake, or an anechoic water tank facility. However, technical difficulties arise when practically implementing this in open fields. Signal processing-based techniques such as a sound i...
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| Format: | Article |
| Language: | English |
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The Korean Society of Ocean Engineers
2019-10-01
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| Series: | 한국해양공학회지 |
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| Online Access: | http://joet.org/upload/pdf/joet-33-5-421.pdf |
| Summary: | The directivity of an underwater sound source should be measured in an acoustically open field such as a calm sea or lake, or an anechoic water tank facility. However, technical difficulties arise when practically implementing this in open fields. Signal processing-based techniques such as a sound intensity method and near-field acoustic holography have been adopted to overcome the problem, but these are inefficient in terms of acquisition and maintenance costs. This study established a simple directivity estimation technique with data acquisition, filtering, and analysis tools. A numerical simulation based on an acoustic radiosity method showed that the technique is practicable for sound source directivity estimation in a diffused reverberant acoustic field like a reverberant water tank. |
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| ISSN: | 1225-0767 2287-6715 |