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change "tuning" to 442 instead of 440

0 votes

I'm trying to use the nn to go back and forth between frequencies and note numbers, but I'd like to base it on my A (69) being 442 hz and not 440 hz. Is it possible to change it? I imagine there would be people who'd like to change to 432 hz and other base frequencies.

And what is the reason that the A is 440.0000583572d hz and not 440 hz? It's precise enough for me, just curious.




asked Oct 11, 2018 in Capytalk & Smalltalk by anders-skibsted (Adept) (1,170 points)

1 Answer

+1 vote
Best answer

You could convert the pitch to hertz and then scale it by the ratio of your reference A in hertz to the built-in reference of A 440, for example:

69 nn hz * (442.0d / 440.0)


69 nn hz * (432.0d / 440.0)

answered Oct 11, 2018 by ssc (Savant) (113,530 points)
selected Oct 11, 2018 by anders-skibsted