My own understanding is that a Musical octave is a halving or doubling
of frequency.
Notes that are on octave boundaries have harmonic relationships.

An octave is not divided into seven or eight notes, it is divided into
twelve intervals.(sometimes referred to as "semi-tones", but since 12
does not divide evenly by seven, there's another complete discussion
waiting to happen)

But then I get my view of notes through a MIDI cable.

I really enjoy the diversity of perspective that Piclist offers.
There is also some bizarre entertainment when topics occasionally go on
for weeks on end.. At that point I'm not learning about engineering, I
am learning
about engineers.

You are all appreciated. :)
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