Цитата:
|
А такое делают последние 10 лет, не более.
|
а-бы что писать ? ..
Discrete (4-4-4) formats
Discrete reproduction is the only true Quadraphonic system. As its name suggests, with discrete formats the original four audio channels are passed through a four-channel transmission medium and presented to a four-channel reproduction system and fed to four speakers. This is defined as a 4–4–4 system.
UD-4 / UMX / BMX (
1973)
CD-4 (Compatible Discrete 4) / Quadradisc (
1972)
Quad-8 (Q8) / Quadraphonic 8-Track (
1970)
Q4 / Quadraphonic Reel to Reel (
1969)