A new microphone based on an optical mea
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K. Budal
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Article
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1974
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Elsevier Science
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English
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A new type of microphone is described. The measurements on a microphone prototype with a membrane diameter of 7 mm show the following results: flat frequency response from zero Hz (if required) to 20 kHz, sensitivity 60 mV/N/m 2, output can be loaded with a resistance as low as 600 s distortion sati