[LAU] ambiophonics vs. ambisonics?

[Paul Davis]

On Sun, Feb 28, 2010 at 3:23 PM, Martin Leese
<martin.leese at stanfordalumni.org> wrote:
> J?rn Nettingsmeier <nettings at folkwang-hochschule.de>
> ...
>> and there's an excellent MAG article about using 4 speakers for better
>> stereo replay here:
>> http://www.audiosignal.co.uk/Resources/Surround_sound_from_2-channel_stereo_A4.pdf
>> nothing to do with ambisonic decoding, though.
>
> This is just the old Hafler circuit.  It doesn't
> really compare with Ambisonics.

it doesn't. but i have to say that since i first encountered it,
thanks to brian eno's noodlings on the cover of, hmm, can't recall,
but one of the earliest recordings on EG, i've always been struck at
what a big improvement it makes to an otherwise stereo setup.