Sat, 21 Dec 2013 18:40:19 +0000,
Fons Adriaensen <[email protected]> a écrit :

> On Sat, Dec 21, 2013 at 11:24:45AM -0500, Marc Lavallée wrote:
> 
> > My comprehension of Ambisonics is that the listener's head (in the
> > "sweetest spot") is exposed to one coherent approximation of a
> > reproduced (or synthesized) sound field, not to a set of directional
> > waves coming from the speakers (one directional wave per speaker).
> 
> The listener is exposed to to a set of directional waves coming
> from the speakers (one directional wave per speaker) which combine
> into an approximation of the original soundfield - there is no
> conflict between the two views. 

Yes, I understand that (intuitively); what I meant (you excluded the
last part of my message) is that I prefer to consider Ambisonics as a
way to produce a sound field that is coherent enough (in the sweet
spot), to not care (much) about the all the interactions between the
listener and each speaker.

> If the approximation is good enough, the way it is constructed
> becomes irrelevant and you won't hear the speakers as separate
> sources. A phantom (between the speakers) source will result
> in superposition (i.e. interpolation) of HRIRs, even when 
> listening to a speaker system. If the same happens when binaural
> signals are synthesized, that should not be a problem if it wasn't
> one for the speakers system. 

Right. What matters is the resulting sound field in the "listening
spot".

> In other words, the fact that interpolating HRIRs will not 
> result in the exact HRIR for the intented direction should
> be irrelevant IFF the signals that are combined would produce
> a convincing soundfield when reproduced over speakers.
> 
> 
> Ciao,

Thats' clear enough. Thanks for your explanation.
--
Marc

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