Similar to the ambisonics questions, I'm wondering if anyone has done any work on an 8 channel surround patch. I'm looking for something that works in a polar coordinate system. The idea is that a sound is distributed amongst speakers based on it's angle, and distance from the center of the speaker arrangement. This is not simply a pan 360 degrees around 8 channels. That's easy. This is more like spatializing an object inside a space by giving an angle (0 for front of the room) and radius (0 for center an 1 for edge of speaker perimeter). The ability to specify the amount of speakers for use with other listening environments is also a requirement.
Any ides on where to start? Right now I assume that all speakers are distributed evenly around a circular perimeter. I'm using a cosine panning law for panning around a perimeter but am lost on how to best go about spatializing inside the perimeter. If anyone is willing to offer up a patch I could tinker with, I'd really appreciate it.
Thanks, Phil
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Hallo, Phillip Stearns hat gesagt: // Phillip Stearns wrote:
Similar to the ambisonics questions, I'm wondering if anyone has done any work on an 8 channel surround patch. I'm looking for something that works in a polar coordinate system. The idea is that a sound is distributed amongst speakers based on it's angle, and distance from the center of the speaker arrangement. This is not simply a pan 360 degrees around 8 channels. That's easy. This is more like spatializing an object inside a space by giving an angle (0 for front of the room) and radius (0 for center an 1 for edge of speaker perimeter). The ability to specify the amount of speakers for use with other listening environments is also a requirement.
Some ideas: Shahrokh Yadegari e.a. wrote the [space~] external, which is documented here: http://www.crca.ucsd.edu/~syadegar/software.html
Attached is a little patch I did which uses the control.pd abstraction I posted yesterday to control the sound position in space~.
Then the IOhannes and the IEM did a lot of work regarding ambisonics. Some of this is in German, though, like IOHannes' thesis. http://iem.at/~zmoelnig/publications/ambisonic/ambisonic_en.html Patches should be at: ftp://iem.kug.ac.at/pd/Patches/ambisonic but they aren't. IOhannes?
Ciao
Frank Barknecht _ ______footils.org_ __goto10.org__
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Frank Barknecht -
Phillip Stearns