At this point, it is an overused joke. Someone in a movie steps up to a microphone to say something serious or awkward, and when they start talking, a screeching sound can be heard. For as rote as it ...

Robert L. Clark of Duke University's Pratt School of Engineering explains. Just for the record, feedback is actually the mechanism used to control almost every electronic device manufactured.

The art of sound began in 1927, when Universal employee Jack Foley helped turn the film studio’s "silent” Show Boat into a full-on musical extravaganza. Because microphones could only pick up on ...

A camera system can see sound vibrations with such precision and detail that it can reconstruct the music of a single instrument in a band or orchestra. Even the most high-powered and directed ...