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A term used to describe the number of times that the recorded audio signal has been copied.

Ground Loop
A double grounding of a line or electronic device at two different "ground" points of differing voltage.

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1) Having a pleasing amount of low frequencies compared to mid-range frequencies and high frequencies. 2) Having a pleasing mixture of the various instrument levels in an audio recording. 3) Having a fairly equal level in each of the stereo channels. 4) A method of interconnecting electronic gear using three-conductor cables.

Balls
1) The depth and thickness of a sound, usually on the bottom end of the EQ (as in "needs more balls"). 2) The strength of the voice on the mic (as in "check it like you have some balls").

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(Said of compressors and dynamic processing units.) To combine the control input signals of two channels of a compressor (o

Amplitude
The strength of a vibrating wave; in sound, the loudness of the sound.

AC
1) Abbreviation for alternating current.
2) An abbreviation of the term Alternating Current (electric current which flows back and forth in a circuit; all studio signals running through audio lines are AC).

Fundamental
The tuned frequency and (almost always) the lowest frequency that is present in the sounding of a pitch by a musical instrument.