Walk the Walk: Audio and Video Terms

From AAD to Voice Coils (we don't have any "Z" terms yet), this glossary will break-down the alphabet soup and "audiophile-speak." Credit for some terms: TheWhippinpost, Aaron Miller, Audio Concepts

Receiver
An audio component that combines a pre-amplifier, amplifier(s) and tuner in one chassis. A Dolby Prologic Receiver also contains a Dolby Prologic decoder fo...
Tue, 14 Oct, 2014 at 9:07 PM
Resistance (Re)
In electrical or electronic circuits, a characteristic of a material that opposes the flow of electrons. Speakers have resistance that opposes current.
Tue, 14 Oct, 2014 at 9:08 PM
Resolution
 See Definition
Tue, 14 Oct, 2014 at 9:08 PM
Resonant frequency
 Any system has a resonance at some particular frequency. At that frequency, even a slight amount of energy can cause the system to vibrate. A stretched pia...
Tue, 14 Oct, 2014 at 9:08 PM
Reverberation
Reverberation (sometimes called reverb or " echo ") occurs when a sound persists after its source stops emitting it. Sometimes reverberation is in...
Tue, 14 Oct, 2014 at 9:09 PM
Ribbon
 thin conductive diaphragm suspended in strong magnetic gap. Diaphragm vibrates when audio signal is put through it.
Tue, 14 Oct, 2014 at 9:09 PM
Ribbon Speaker
 A type of speaker that uses a pleated conductor suspended between magnets. Most true ribbons are tweeters only. Sometimes confused with magnetic-planar spe...
Tue, 14 Oct, 2014 at 9:09 PM
Rich
 See Full. Also, having euphonic distortion made of even order harmonics.
Tue, 14 Oct, 2014 at 9:10 PM
RMS (root-mean-square)
 The square root of the mean of the sum of the squares. Commonly used as the effective value of measuring a sine wave's electrical power. A standard in ...
Tue, 14 Oct, 2014 at 9:10 PM
Roll-off (Rolloff)
 The gradual attenuation that occurs at the lower or upper frequency range of a driver, network, or system. The roll-off frequency is usually defined as the...
Tue, 14 Oct, 2014 at 9:11 PM