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Tuesday, September 22, 2009

New microphone technology is based on lasers

Laser-Accurate technology uses a laminar stream of air in a chamber in which microscopic particles are suspended. Air-pressure changes cause particle movement that is detected by a laser beam aimed at a photoelectric cell, producing accurate and precise transduction of any sound. The Laser-Accurate technology, which uses a 650 nm, 5 mW laser and a silicon detector from Thorlabs, captures sound unadulterated by the mechanical motion of the diaphragm and the inevitable time lags caused by that movement.

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