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SOWPODS (Collins Scrabble Words)
"Phonometer" Definition
noun
An instrument for measuring sounds.
Source: Wiktionary
An instrument for measuring sounds, as to their intensity, or the frequency of the vibrations.
In psychophysics, an instrument for the production of accurately graded intensities of sound. the simplest form of phonometer is the sound-pendulum (which see). in wundt's gravity-phonometer, ivory balls are dropped by electromagnetic releases from varying heights upon hard-wood plates.
Source: Century Dictionary
A clockwork instrument swung in gimbals, so that its face is always horizontal, and on whose dial are certain marks indicating intervals at which a whistle or other signal should be made to announce the compass course of the vessel.
Source: Century Dictionary
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