Stereophonic sound
Videos
Stereophonic sound, commonly shortened to stereo, is a method of sound reproduction that recreates a multi-directional, three-dimensional audible perspective. This is usually achieved by using two ind
Two microphones set up to record a piano simultaneously, which creates a stereo sound
Diagram of Clément Ader's théatrophone prototype at the Opera during the World Exhibition in Paris (1881)
Bell Labs binaural demonstration at World's Fair
Domestic stereo system, having two speakers
Duophonic
Videos
Duophonic sound was a trade name for a type of audio signal processing used by Capitol Records on certain releases and re-releases of monaural recordings issued during the 1960s and 1970s.
Stereophonic sound
…stereo have been used to create the impression that the sound was originally recorded in stereo. These techniques first involved hardware methods (see Duophonic) or, more recently, software or a combination of hardware and software. Multitrack Studio, for instance, uses special filters to achieve a pseudo-stereo…
RCA "stereo" reissue bearing the "electronically reprocessed" wording.