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Convention Paper

Photoacoustic Cell Signal Processing

Authors: Michnovicz, Michael R.

AES Convention 91 · Paper 3154 · October 1991

Abstract

A photoacoustic cell is used to measure the absorptance of gases at infrared wavelengths. A pressure pulse is created when the gas absorbs a light pulse, exciting resonances within the cell. A microphone provides the cell's output signal whose energy is (ideally) proportional to the absorbed light energy. The paper describes a novel approach for processing the cell's noisy output.

Details

Published in
AES Convention 91
AES Convention
91
Paper number
3154
Publication date
October 6, 1991
Session subject
Microphones
Affiliation
TITAN / Spectron Development Labs, Albuquerque, NM (See document for exact affiliation information.)
Type
Convention Paper