Glossary of Audio Terms

An electrical circuit in which require only two conductors, signal "hot" and ground. Unbalanced audio circuitry is less expensive to build but is under many circumstances more susceptible to noise pickup than balanced circuits.
See: Balanced

A full-bandwidth (20 Hz-20 kHz) measurement of an unfiltered signal. Used to specify a signal-to-noise measurement where all audio frequencies receive equal emphasis. See "A" weighted.