
Microphonics or microphony describes the phenomenon wherein certain components in electronic devices transform mechanical vibrations into an undesired electrical signal (noise). The term comes from analogy with a microphone, which is intentionally designed to convert vibrations to electrical signals. When electronic equipment was built using vacuu...
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http://en.wikipedia.org/wiki/Microphonics

• (n.) The science which treats of the means of increasing the intensity of low or weak sounds, or of the microphone.
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http://thinkexist.com/dictionary/meaning/microphonics/
Mi`cro·phon'ics noun [ See
Microphone .] The science which treats of the means of increasing the intensity of low or weak sounds, or of the microphone.
Found on
http://www.encyclo.co.uk/webster/M/62
No exact match found.