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J Acoust Soc Am. 2015 Sep;138(3):EL193-8. doi: 10.1121/1.4929620.

Methods to calibrate the absolute receive sensitivity of single-element, focused transducers.

Author information

1
Biomedical Engineering Program, University of Cincinnati, Cincinnati, Ohio 45267, USA richkt@mail.uc.edu, doug.mast@uc.edu.

Abstract

Absolute pressure measurements of acoustic emissions by single-element, focused passive cavitation detectors would be facilitated by improved wideband receive calibration techniques. Here, calibration methods were developed to characterize the absolute, frequency-dependent receive sensitivity of a spherically focused, single-element transducer using pulse-echo and pitch-catch techniques. Validation of these calibration methods on a focused receiver were made by generating a pulse from a small diameter source at the focus of the transducer and comparing the absolute pressure measured by a calibrated hydrophone to that of the focused transducer using the receive sensitivities determined here.

PMID:
26428812
PMCID:
PMC4560723
DOI:
10.1121/1.4929620
[Indexed for MEDLINE]
Free PMC Article

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