What is featuring David Schwartz of Rochester Institute of Technology in the video is actually a new way to detect sound waves in air . The device is a " detection microphone particle flux, although many already christened" laser microphone, and is based precisely on the use of a laser and smoke to capture (and possibly record) sound waves.
What Schwartz is ambitious promises, asserting that his invention (once perfected, of course), could take a screenshot sound much more pure , since there are no intervening mechanical components, such as the membrane of a microphone "conventional." Schwartz
The microphone uses lasers to scan an air filled with microscopic particles (read: smoke). When particles move in response to sound, the laser detects the movement without disturbing the air (at least not audible), so that the vibration - and therefore the recording - should be close sound perfect as possible. In theory.
The inventor of this is not an improvised Schwartz has several patents sound linked to his credit, including one of the technologies that allowed the development of mp3 , so it may have something good hands. In the meantime, will present a prototype developed a little more of his invention at the next convention of the AES (Audio Engineering Society ) in October.
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