[LAU] Where do the 60 degrees for stereo come from?

[Julien Claassen]

Hello Philipp!
   I suppose with 60 degrees you mean the two times 30 degrees, that the 
speakers should have. I always thought it had very trigonometrical reasons. So 
at your head you have an angle of 120 degrees, which is a wide angle, that 
might fit the ears nicely, since they don't look like they would make a 90 
degrees angle at your point of the triangle. Something in the back of my mind 
tells me phases came in as well. But unfortunately I have nothing more 
definite. Someone will though. Fons should, since I think he once explained it 
to me with perfect reasoning. So should a few others.
   Sorry, I couldn't be more specific.
   Warm regards
            Julien

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