Definition of Stereo Quadraphonic
SQ Quadraphonic ("Stereo Quadraphonic") is a matrix 4-channel quadraphonic sound system for vinyl LP records. It was introduced by CBS Records (known in the United States and Canada as Columbia Records) in 1971. Many recordings using this technology were released on LP during the 1970s.
Record companies who adopted this format include: Angel, CTI, Columbia (internationally called CBS Records), EMI, Epic, Eurodisc, Harvest, His Master's Voice, Seraphim, Supraphon and Vanguard.
With matrix formats, the four sound channels (forward left, forward right, back left, back right) are converted (encoded) down to two channels (left, right). These are then passed through a two-channel transmission medium (usually an LP record) before being decoded back to four channels and presented to four speakers.
Terms mentioned above
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Frequently asked questions
What is Stereo Quadraphonic?
SQ Quadraphonic ("Stereo Quadraphonic") is a matrix 4-channel quadraphonic sound system for vinyl LP records. It was introduced by CBS Records (known in the United States and Canada as Columbia Records) in 1971.
Sources & credits
- Wikipedia: Stereo Quadraphonic – CC BY-SA 4.0
- Image by Lateiner – CC BY 2.5