The schematics are in the Ambisonic Motherlode:
http://decoy.iki.fi/dsound/ambisonic/motherlode/
Somewhere in there......
Eero
Richard Elen kirjoitti 17.2.2020 klo 11:57:
The Audio & Design Recording boxes that Geoff Barton designed were
intended as (analogue) outboard units that could be patched into a
conventional mixing console to generate (mainly) first-order (all there
was) Ambisonic B-Format.
The Pan-Rotate unit included eight 360-degree controls, each with a
radius vector (distance from centre) control with a switched position
for maximum radius vector. In addition there was a B-Format Converter
which allowed console panpots to be used to pan across a quadrant, using
four groups and an aux send.
Finally, a Transcoder unit generating 2-channel UHJ only could be fed
with stereo signals for front and rear stages with a stage width control
on each.
The units are described in these articles:
http://ambisonic.net/branwell_arb.html
http://ambisonic.net/ambimix.html
I'm afraid I don't have circuit diagrams but Geoff presumably has.
--R
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