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.

A sound, usually high-pitched, caused when sound waves are picked up by a microphone from a loudspeaker connected in the same circuit as the microphone. The particular sound heard is a result of the ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. We've now got plenty of software guitar amps to play with, but what are they all missing?