BOC: early quadrophonic records

[Eric Siegerman]

On Fri, Aug 20, 2004 at 02:22:26PM -0400, Stephen Swann wrote:
> On Fri, Aug 20, 2004 at 11:54:18AM -0400, Albert Bouchard wrote:
> Maybe some kind of sound matrixing, [...]

Two parallel grooves, a la Matching Tie and Handkerchief, but
with dual styli to read them?

Seriously, there were three different flavours.  "SQ" and "QS"
used matrixing; "discrete" used a weird kind of
frequency-division multiplexing.

http://www.rdrop.com/~dano/tunes/quad.html

--

|  | /\
|-_|/  >   Eric Siegerman, Toronto, Ont.        erics at telepres.com
|  |  /
It must be said that they would have sounded better if the singer
wouldn't throw his fellow band members to the ground and toss the
drum kit around during songs.
        - Patrick Lenneau