Analog audio
Revision as of 17:54, 24 February 2012 by Brad Johnson (talk | contribs) (Created page with "The term <nowiki>Analog audio</nowiki> is typically used in contrast to digital audio. Strictly speaking; audio is used to describe things having to do with sound. Sound is ...")
The term Analog audio is typically used in contrast to digital audio. Strictly speaking; audio is used to describe things having to do with sound.
Sound is short-term variations in air pressure above an below average (barametric) air pressure. These pressure variations are translated by a transducer such as a microphone into voltage variations. The voltage variations change proportionally to the air pressure variations, so one can say the voltage variations are analogous to the sound- or that the voltage waveform is an "analog' of the audio waveform.