TY - GEN
T1 - Narrowband sound power measurement using supersonic intensity in underwater reverberant environments
AU - Barnard, Andrew
AU - Hambric, Stephen
AU - Conlon, Stephen
AU - Capone, Dean
PY - 2007
Y1 - 2007
N2 - A vibrating thin-walled cylinder was submerged and scanned using a custom built pressureacceleration intensity probe. Measurement mesh density was increased and standoff distance between the sensors and cylinder was decreased from the previous work (presented at InterNoise 2006) to improve the results. A new intensity probe was developed with reduced EMI rejection in its noise floor. In addition, reverberant signal separation post-processing techniques were implemented in the wavenumber domain. Results show that the reverberation field in the tank can be filtered from the hologram data, and that supersonic intensity can be used to compute narrowband radiated sound power and directivity.
AB - A vibrating thin-walled cylinder was submerged and scanned using a custom built pressureacceleration intensity probe. Measurement mesh density was increased and standoff distance between the sensors and cylinder was decreased from the previous work (presented at InterNoise 2006) to improve the results. A new intensity probe was developed with reduced EMI rejection in its noise floor. In addition, reverberant signal separation post-processing techniques were implemented in the wavenumber domain. Results show that the reverberation field in the tank can be filtered from the hologram data, and that supersonic intensity can be used to compute narrowband radiated sound power and directivity.
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M3 - Conference contribution
AN - SCOPUS:84867753589
SN - 9781604238525
T3 - Institute of Noise Control Engineering of the USA - 22nd National Conference on Noise Control Engineering, NOISE-CON 2007
SP - 1732
EP - 1743
BT - Institute of Noise Control Engineering of the USA - 22nd National Conference on Noise Control Engineering, NOISE-CON 2007
T2 - 22nd National Conference on Noise Control Engineering, NOISE-CON 2007
Y2 - 22 October 2007 through 24 October 2007
ER -