[PD] 6 speakers in a circle, ambi? vbap?

Nicholas Mariette nicholas.mariette at limsi.fr
Mon Oct 6 13:30:59 CEST 2008

for panning inside the array, nothing other than WFS will give you a  
reasonable source image inside the room.
often for ambisonics, you'd just xfade from the XYZ channels more into  
the W (omni) channel within a certain radius.
same with VBAP - just pan all speakers. (or turn spread all the way up).

On Oct 6, 2008, at 12:33 PM, Thomas Grill wrote:

> one more thing:
> If you want to position your virtual sound sources _inside_ the
> circle of speakers i am not sure if this is possible with ambisonics
> at all - and it's also difficult for VBAP depending on the
> triangulation it uses... you might want to check or manually specify  
> it.
> In such a case I personally would want to have some center speakers
> and would have two VBAP-driven rings (in the middle and on the
> periphery) between which i would do conventional panning.
> I once used that i the case of a planetarium where the audience is
> situated in a ring between the center and the circular wall. I had 3
> center speakers facing to the wall, 5 peripheral speakers facing to
> the center and two subwoofers.
> all the best, Thomas
> Am 06.10.2008 um 06:39 schrieb Hans-Christoph Steiner:
>> So I am working on sound for a permanent installation involving 6
>> speakers in a large circular room.  Are 6 speakers enough to do
>> anything useful using ambisonics?  Or am I better off using the
>> simpler vbap?
>> I am just starting to understand the basics of ambisonics, thanks to
>> Florian's intro.  I will be programmatically controlling the position
>> of the samples, since it will be synced up with a video.  So I don't
>> think I really need the GUIs like cubemixer.
>> Are there any simple, working demos of the IEM ambi stuff?
>> .hc
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