– A steady, fixed level tone recorded onto a multitrack recording, or passed over a signal connection to test the signal path and act as a reference when matching levels.

The rate of the 'beat' of a piece of music measured in beats per minute.

The part of a tape machine that transfers magnetic energy to the tape during recording, or reads it during playback.

A system designed to enable voice communication between rooms.

(System Exclusive) A part of the MIDI standard that allows manufacturers to define their own specific message formats, commonly used to dump and load a specific product’s patch data.

An electronic musical instrument designed to create a wide range of sounds, both imitative and abstract.

The creation of artificial sound.

A system for making two or more pieces of equipment run in synchronism with each other.

(Also SMPS) A type of power supply that uses mains power to drive directly a high frequency oscillator so that a smaller, lighter transformer may be used. These power supplies are commonly used because they can be made to accept a wide range of mains supply voltages, and are thus universal.

The optimum position for a microphone, or for a listener relative to monitor loudspeakers.