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July 15th, 2008

Fire Phasers!

Some days I miss school. 

I was just reading how Dolby accomplished "surround sound" via phase shifting.  This is how mechanical I think about things: here's the input -- looks at a 1/8" audio jack --, it has two channels -- looks at contacts --, now why the hell do we think that we could hear >2 channels?!  

Physics answers practical questions like these.  Mathematics still has the matrices behind it all :)

Probably not by chance, I finally bumped into the manual for my cheap receiver