System and method for detection of speech related acoustic signals by using a laser microphone
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United States of America Patent
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May 17, 2016
Grant Date -
May 1, 2014
app pub date -
Oct 31, 2012
filing date -
Oct 31, 2012
priority date (Note) -
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Abstract
A system for detection of speech related acoustic signals by using laser based detection that includes a mask configured for being worn over a face part of a speaker covering the speaker's mouth, where the mask includes at least one reflective coating covering at least one area of the mask that reflects collimated electromagnetic signals; and a laser microphone configured for detecting vibrations of the reflective coating area for detection of acoustic signals associated with speech of the speaker by using collimated electromagnetic signals. The mask the reflective coating area thereof allow enhancing detection of vibrations resulting from speech carried out by the speaker wearing said mask.
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