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electret microphone |
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electret microphone [i′lek‚tret ′mī·krə‚fōn] (engineering acoustics) A microphone consisting of an electret transducer in which the foil electret diaphragm is placed next to a perforated, ridged, metal or metal-coated backplate, and output voltage, taken between diaphragm and backplate, is proportional to the displacement of the diaphragm. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Knowles is a leading supplier of acoustic interface solutions; specifically MEMS surface mount microphones, subminiature electret microphones, balanced armature speakers and speech enhancement software. An on-chip dual microphone preamplifier and a programmable low-noise bias supply for external electret microphones is also included. Electret microphones, the most popular kind in the world, produce high fidelity at low cost. |
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