Yes spinning is easily done with ambipan~ for instance. Since you have control of the radius (sound distnace) and angle (rotation), the way that you vary the angle variable determines the speed of course.

This can be "simulated" with two speakers only, for example with binaural rendering of the audio. With ITD (see the list) the ears are tricked into believing that the sound arrives from a certain position. 

What I found in my implementations, installations, papers is that all this works better with HRTF models, this means: you know where the head of the users is. How to do that? OpenCv Head Tracking, IR tracking system with rigid bodys (by far the best), and recently Microsoft Kinect.

Best regards,
Pedro

On Sat, Jan 29, 2011 at 1:10 PM, ronni montoya <ronni.montoya@gmail.com> wrote:
Hello, im working on a installation and i need to simulate the effect
of spinning sounds around the listener.
Each sound is spinning around a different center point  which are
located around the listener. Ive made this pic so you can understand
better:

http://www.zshare.net/image/8587193340809633/


So my question is :
Do anybody have tried something like this in pd?
Is it possible to achieve this kind of effect using 2 speakers?
If not , which speaker configuration and synthesis approach do you
recommend me to achieve this goal?


thanks


R.

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--
Pedro Lopes (MSc)
contact: pedro.lopes@ist.utl.pt
website: http://web.ist.utl.pt/Pedro.Lopes / http://pedrolopesresearch.wordpress.com/