A-B Test:  A test by which an observor subjectively compares the performance of two compone . . .
Abx Comparator:  A device that randomly selects between two components being tested. The listener . . .
Ac-3:  (audio coding 3) Dolby's digital audio data compression algorithm adopted for HD . . .
Acoustic Coupling:  The interaction between two or more speakers stacked together in an audio system . . .
Acoustic Feedback:  A phenomenon where the sound from a loudspeaker is picked up by the microphone o . . .
Acoustic Suspension:  A type of speaker enclosure that uses a sealed box to provide tight, accurate ba . . .
Acoustic Suspension (Enclosure):  A Sealed box system that uses the resist . . .
Acoustics:  Sound is simply vibrating air. How fast, how much, and when the air is vibrated, . . .
Active:  A word prefacing certain circuits in which the processing is performed by use of . . .
Active Display:  A special feature for front panel receiver displays that generates animated patt . . .
Adaptive Reception:  A circuit that provides adjustable delay such that the time at which a sound wav . . .
Adaptive Trasformation Acoustic Coding (ATRAC):  The process used in minidisc that utiliz . . .
Aiff:  Short for Audio Interchange File Format, a file format for storing and transmitt . . .
Air Gap:  In a speaker's motor section, the space between the top plate and the pole piece . . .
Alternating Current:  Electricity which flows in opposite directions, alternating at a certain rate (H . . .
Alternator Whine:  A siren-like whining that appears as the rotational speed of an engine increases . . .
American Wire Gauge (AWG):  A standard for measuring the diameter of . . .
Amperes (A):  Ampere is a unit measurement of current of electrical energy equal to one coulom . . .
Amplification Classes:  All sound is a sinosoidial waveform. It . . .
Amplifier:  A device, either a single stage or a large scale circuit with mutiple stages for . . .