Wayne Parham Messages: 18758 Registered: January 2001
Illuminati (33rd Degree)
I don't think there is any qualitative difference in the sound of a 440Hz sine wave tone and a 432Hz sine wave tone. I think both will be equally pleasant. Both just sound like an unremarkable tone.
What I think can make a subjectively qualitative change is when you start adding sine waves to a fundamental of any frequency. These added notes can be pleasant or unpleasant, depending on their spacing, e.g. their harmonic relationship with one another. Chords and note progressions can sound better or worse depending on their harmonic arrangement too.