Schwartz & Company

Today, 3 November 2009 is about 60 days since our first prototype recorded almost recognizable speech. Prototype 5 does continuous speech and we th...

U.S. Patent 7,580,533 Particulate Flow Detection Microphone, third prototype. We reworked Proto 1 to make this unit. It's half the size of P1, uses...

U.S. Patent 7580533 Particulate Flow Detection Microphone prototype two is shown in detail, disassembled and reassembled, with a description of the...

U.S. Patent 7580533 Particulate Flow Detection Microphone Prototype Two demonstration. Better than Prototype one, but still far from a commercial p...

World's first laser-smoke microphone prototype of U.S. Patent 7580533. Noisy and rough, but like a talking dog, the main thing is, it talks.

United States Patent 7580533 issued on 25 August 2009 for a new type of microphone based on a laser-photocell pair used for detection of sound pres...