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Photoacoustic Cell Signal Processing

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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.

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Permalink: http://www.aes.org/e-lib/browse.cfm?elib=5562

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