What is CD-4 in audio?

What is CD-4 in audio?

CD-4 (or Compatible Discrete 4 Channel) was a short-lived, four-channel, surround-sound system for phonograph records. Developed by JVC in Japan, the system was adopted in America around 1972 by RCA where it was known as RCA Quadradisc. Unlike matrix quadraphonic systems, CD-4 took a more radical approach.

What is quadraphonic vinyl?

One specialty area of Vinyl record collecting is quadraphonic. This basically means records that have a special sound mix of 4.0 surround sound. Many times these records can sell for 3 or 4 times the amount of the regular stereo issue as well.

What was the first quadraphonic album?

Quadrafile
In 1976, Mike Thorne created the vinyl album Quadrafile, with the same music recorded on all four sides, but in four different quadraphonic formats (QS, SQ, CD-4, and UD-4).

What is a CD-4 demodulator?

A typical high-performance CD-4 system would include a turntable with a CD-4 compatible phono cartridge, a CD-4 demodulator, a four-channel amplifier (or receiver), and four identical full-range loudspeakers. CD-4 encoded records were also compatible with conventional two-channel stereo playback systems.

What is the difference between stereo and quadraphonic?

Quadraphonic audio mixing The audio mixing process for four channel sound is different than for stereo versions of the same recording. Most studio equipment is designed for stereo only, so specialized multichannel mixing consoles and playback systems must be available.

What do you need for quadraphonic sound?

A quadraphonic system will reproduce left front, left rear, right front, and right rear audio signals in each of four separate speakers. Reproduction in the rear speakers should be of the same quality or almost the same quality as the front speakers. Ideally, it is preferred to use four identical speakers.

What is the definition of quadraphonic?

Definition of quadraphonic : of, relating to, or using four channels for the transmission, recording, or reproduction of sound. Other Words from quadraphonic Example Sentences Learn More About quadraphonic.

In what system is the 45 degree recording used?

In the Westrex system, each channel drives the cutting head at a 45-degree angle to the vertical. During playback, the combined signal is sensed by a left-channel coil mounted diagonally opposite the inner side of the groove and a right-channel coil mounted diagonally opposite the outer side of the groove.