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Re:The “432 Hz vs. 440 Hz” conspiracy theory by seandougall on Monday October 24, 2016 @02:47PM (#12781623)
A not-insubstantial part of the engineer's job is to impress the artists. Mastering engineers even more so.
Re:The “432 Hz vs. 440 Hz” conspiracy theory by ptaipale on Monday October 24, 2016 @03:09PM (#12781837)
Directional audio cables are another example of such "making impressions" business.

(Technically nonsense, of course.)

Re:The “432 Hz vs. 440 Hz” conspiracy theory by hexane360 on Monday October 24, 2016 @05:19PM (#12783000)
https://xkcd.com/670/

I would take it a step further. I'd make up my own units based on seemingly natural things and then tune to numerically interesting values of those.

"This next song's beat is 432 times faster than a cricket chirping at 50 degrees C."