pistonphone

[′pis·tən‚fōn]

(engineering acoustics)

A small chamber equipped with a reciprocating piston having a measurable displacement and used to establish a known sound pressure in the chamber, as for testing microphones.

References in periodicals archive ?

This constitutes a rather large error in the calibration performed with the pistonphone (which, it should be clarified, has also not been electronically calibrated in the same period of time) and in the subsequent results of formal measurements of the signal of interest.

Design of a sound pressure level acquisition and analysis system/ Diseno de un sistema de adquisicion y analisis de nivel a presion sonora

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