Is 432 Hz tuning complete BS ??
I am listening to some music on youtube that is 432 hz tuned and it sounds more soothing, i have to admit.
Yes, it's complete bs. For one, the arguments about it always stress that there's something special about the frequency 432, but only A in one particular octave (A4) would actually be at 432. All of those other notes, including all of the other As, are different frequencies. Lots of pieces wouldn't even contain an A4.
You can certainly hear a difference between 440 and 434, but not a huge difference. The tuning difference is roughly equivalent to one pitch of a 36-note-per-octave microtonal scale. Or in other words, if we had two more pitches between G#4 and A4, A=432 is about where the pitch right below A4 would be--or it's just slightly flat to A=440. The practical limit for distinguishing pitches on a microtonal scale is somewhere around 70 to 80 pitches per octave. Smaller divisions than that are difficult for many people to hear. So the pitch difference betwen A=440 and A=432 is only a bit more than twice the difference that most people can even discern.