We’ve all heard it before: A deafening squeal coming from the speakers at a concert or other event that causes everyone in the audience to plug their fingers in their ears and shout, “Make it stop!” ...

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.

If you’ve ever listened to a crisp recording and wondered why your microphone doesn’t sound as clear, don’t worry—you’re not alone. It takes more than simply buying the right equipment to make your ...