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Photoacoustic detector with acoustic and vibration noise compensation
Photoacoustic detector with acoustic and vibration noise compensation
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机译:具有声学和振动噪声补偿的光声检测器
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摘要
A photoacoustic detector includes a sensing region for receiving atmospheric samples. One microphone receives acoustic samples from the sensing region. Another microphone receives acoustic samples from a displaced region. Microphone outputs can be subtracted to eliminate common noise and to generate an indicium of gas present in the sensing region.
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