A small, standard, lithium sulfate hydrophone has been calibrated by a reciprocity-coupler method in the frequency range 20 cps-3 kc/sec and at hydrostatic pressures from 0–16 000 psi. The sensitivity of the hydrophone is stable to within ±0.3 dB in this pressure range.
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Sims et al. (1964) studied this question.
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