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

Hans-Christoph Steiner hans at eds.org
Mon Oct 6 17:38:26 CEST 2008

Thanks for the advice, definitely useful.  The speaker and room setup  
are fixed, I can't change that at all, so I have to make the best of  
it.  I think I'll start with VBAP since it is easy, and seems lighter  
than ambi.  The sound environment that I am working on now will be  
made of 6000 sounds moving around, so lightweight is good :)


On Oct 6, 2008, at 7:30 AM, Nicholas Mariette wrote:

> 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).
> Nick
> 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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