Originally Posted by rharv
432 creates one more overtone within our hearing range, so there's that ..

440 has 46, 432 has 47.
If you’re counting the number of harmonics out to 20kHz, I’m not sure how relevant that is in listening to music. Many audiologists only test out to 8kHz, and many of us can't even hear out to that frequency.

20,000/440=45.5
20,000/432=46.3

8,000/440=18.2
8,000/432=18.5

What I do find interesting is how easy it is to take A440 for granted given the challenges the folks back in 1939 faced while establishing it. The more I learn about this the more I realize that
a) 440Hz is to some degree arbitrary
b) Much compromise was needed for this standard to be agreed upon
c) A 440Hz standard is not “musically perfect” in every sense but it does solve important problems
d) Musicians were happy (and are happy today with it)

I’m beginning to conclude that even with today’s computer-assisted, multi-factor optimization routines that we would not be able to come up with a practical standard meaningfully superior to A440. But then again, there’s much more of this book that remains to be read.

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