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Convention Paper

An Interferometer Microphone

Authors: Young, Niels O.

AES Convention 31 · Paper 489 · October 1966

Abstract

The Brownian or thermal noise limit has been reached up to frequencies of about 50 kHz in air using an axially symmetrical two-beam interferometer whose pellicle beamsplitter bulges under sound pressure. Frequency spectra of the Brownian noise observed in hydrogen, air, and CC12F2 are shown to be correlated to cavity resonant modes (or echoes) within the microphone.

Details

Published in
AES Convention 31
AES Convention
31
Paper number
489
Publication date
October 6, 1966
Affiliation
Block Associates, Inc., Cambridge, MA (See document for exact affiliation information.)
Type
Convention Paper