On Tue, Jul 22, 2008 at 02:21:13PM -0400, Art Hunkins wrote:

> The sonic results are very similar. I do at least imagine that the ambisonic 
> example is a bit fuller and more spatial. By contrast, the stereo pan sounds 
> flat. What do others think?

Both ways just output your vco signal with some gains
to L and R depending on the pan position, and nothing
else.

The only difference is that the ambisonic one produces
antiphase signals at the extremes. 

I don't know if this list permits attachments, if it
does you can see the result.

You can have exactly the same effect using just stereo
panning:  instead of just outputting aL, aR, use
aL - 0.2 * aR, aR - 0.2 * aR. 

Some remarks:

- Trying to evaluate any panning system using 
  continuous signals is somewhat questionable,
  to put it mildly.

- If you are listening using headphones, this
  test is completely invalid. You need to at
  least introduce frequency-dependent crosstalk,
  as the signals you generate do no correspond
  to the sound that would be present at the
  listener's ears for any real sound.

Ciao,

-- 
FA

Laboratorio di Acustica ed Elettroacustica
Parma, Italia

O tu, che porte, correndo si ?
E guerra e morte !




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