Evaluation of a time reversal technique for low frequency acoustic measurements in a reverberant tank

• Autorzy: Buogo S. , Pitolli L. , Cannelli G. B. , Pontuale G.
• Konferencja: Proceedings of the 2 nd EAA International Symposium on Hydroacoustics 24-27 May 1999, Gdańsk-Jurata POLAND
• Języki publikacji: EN

Abstrakty

EN

The objective of this work is to validate the efficiency of a recently proposed technique for acoustic measurements of transducer response. This technique allows measurements to be done in a reverberant tank at considerably lower frequencies than the limit imposed by free-field conditions. The method is based on time reversal, a concept originally developed for sound propagation in marine environment, that performs signal deconvolution. with a very little amount of data processing. It was seen that the method can be used to focus at a fixed point a transmit pulse several ms long, allowing calibrations down to the low kHz range in a 3-4 m tank. Early investigations already showed that the focusing of the acoustic field depends on the frequency. In this work, further measurements were done at the new tank facility of the Underwater Acoustics Laboratory at the Istituto di Acustica "O. M. Corbino" to evaluate the accuracy of the results.

• Wydawca: Polskie Towarzystwo Akustyczne. Oddział Gdański
• Czasopismo: Hydroacoustics
• Rocznik: 1999
• Tom: Vol. 2
• Strony: 185--190
• Opis fizyczny: Bibliogr. 9 poz., rys.

Twórcy

autor

Buogo S.

• CNR - Istituto di Acustica "o. M. Corbino" Underwater Acoustics Laboratory Via del Fosso del Cavaliere 100. 00133 Roma, ltaly

autor

Pitolli L.

• CNR - Istituto di Acustica "o. M. Corbino" Underwater Acoustics Laboratory Via del Fosso del Cavaliere 100. 00133 Roma, ltaly

autor

Cannelli G. B.

• CNR - Istituto di Acustica "o. M. Corbino" Underwater Acoustics Laboratory Via del Fosso del Cavaliere 100. 00133 Roma, ltaly

autor

Pontuale G.

• CNR - Istituto di Acustica "o. M. Corbino" Underwater Acoustics Laboratory Via del Fosso del Cavaliere 100. 00133 Roma, ltaly

Bibliografia

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