A circuit or system that allows communication with a performer. Commonly, though not exclusively, Talkback is used by sound engineers or producers in a studio control room to give directions to performers in the studio or live room.
This is a subjective quality that enables listeners to tell the difference between two sound of an identical pitch at the same volume. Fundamentally it is the difference in the frequency content of the sounds.
A metal bar which is part of some bridge assemblies on an electric guitar. When pushed into the guitar body or pulled away, it changes the length of the guitar strings by adjusting the bridge position, altering the pitch of the sounding notes.