Abstract
The recently published expression for transducer calibration in a plane wave resonator by the reciprocity method [I. Rudnick, J. Acoust. Soc. Am. 63, 1923 (1978)] has been tested against a Rayleigh disk. The resonator tube was terminated at one end by a dual electret transducer and at the other end by an electro‐dynamic transducer. All three transducers were reversible allowing three independent reciprocating calibrations which agreed to better than 1% (0.1 dB). The deflection of the disk was measured by monitoring the change in inductance of a coil surrounding the resonator and the disk. The disk angle detection system was self‐calibrating and permitted absolute measurement of the flow velocity in the vicinity of the disk when the moment of inertia of the disk and damping coil were known. [Research supported by the F. V. Hunt Postdoctoral Fellowship of the Acoustical Society of America with funds provided by the Office of Naval Research.]
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