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CALCULATION DETAILS FOR PANNING (TUTORIAL 22 MSP) – SPEAKER-TO-SPEAKER CROSSFADE

January 5, 2013 | 10:20 am

Hello, I don’t understand very well the last calculation for the Speaker-to-speaker crossfade (Technical Details) in de Panning Tutorial (TUTORIAL 22: MSP).

¿First of all, why do we suppose b=1?

Then, I understand how to calculate the values, but when it says (Technical details in the tutorial help):

"Armed with all of this information, we can finally calculate the gain for the two channels as a cos(y±x)/d."

I don’t why do we arrive there. I would like to follow the steps in the middle to arrive to the gain formula.

In addition, I don’t understand the implementation in the MAX/MSP tutorial.

In the final expression: expr cos(($f2+$f4)*6.2832)*$f3/$f1*2/($f3+1)

What does it mean the end: … * 2/($f3+1) –> f3 is "a", it isn’t.

(I cant’t see the correspondence with the gain formula)

I hop you can help me!

Thank you so much!!

;-) Alberto


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