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UD-4

Index UD-4

UD-4 was a discrete four-channel quadraphonic sound system for phonograph records introduced by Nippon Columbia (Denon) in 1974. [1]

10 relations: Analog signal, Audio Engineering Society, Compatible Discrete 4, Denon, Magnetic cartridge, Matrix decoder, Nippon Columbia, Phonograph record, QS Regular Matrix, Quadraphonic sound.

Analog signal

An analog signal is any continuous signal for which the time varying feature (variable) of the signal is a representation of some other time varying quantity, i.e., analogous to another time varying signal.

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Audio Engineering Society

Established in 1948, the Audio Engineering Society (AES) draws its membership from engineers, scientists, other individuals with an interest or involvement in the professional audio industry.

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Compatible Discrete 4

Compatible Discrete 4, also known as Quadradisc or CD-4 (not to be confused with compact disc) was as a discrete four-channel quadraphonic system for phonograph records.

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Denon

is a Japanese electronics company that was involved in the early stages of development of digital audio technology, while specializing in the manufacture of high-fidelity professional and consumer audio equipment.

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Magnetic cartridge

A magnetic cartridge, more commonly called a phonograph cartridge or phono cartridge or (colloquially) a pickup, is an electromechanical transducer used in the playback of analog sound recordings called records on a record player, now commonly called a turntable because of its most prominent component but formally known as a phonograph in the US and a gramophone in the UK.

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Matrix decoder

Matrix decoding is an audio technology where a finite number of discrete audio channels (e.g., 2) are decoded into a larger number of channels on play back (e.g., 5).

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Nippon Columbia

, often pronounced Korombia,, is a Japanese record label founded in 1910 as.

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Phonograph record

A phonograph record (also known as a gramophone record, especially in British English, or record) is an analog sound storage medium in the form of a flat disc with an inscribed, modulated spiral groove.

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QS Regular Matrix

Quadraphonic Sound (originally called Quadphonic Synthesizer, and later referred to as RM or Regular Matrix)http://www.reddiamondaudio.net/quadraphonic_qs_system.html was a matrix 4-channel quadraphonic sound system based on the same principles as laid down by Peter Scheiber, but developed by engineer Ryosuke Ito of Sansui in the early 1970s.

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Quadraphonic sound

Quadraphonic (or Quadrophonic and sometimes Quadrasonic) sound – equivalent to what is now called 4.0 surround sound – uses four channels in which speakers are positioned at the four corners of the listening space, reproducing signals that are (wholly or in part) independent of one another.

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Redirects here:

BMX (quadraphonic sound), UD4, UMX (quadraphonic sound).

References

[1] https://en.wikipedia.org/wiki/UD-4

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