[plt-scheme] Natural numbers

On Wed, Mar 11, 2009 at 8:31 PM, Jos Koot <jos.koot at telefonica.net> wrote:
> (For who it concerns: I have put 'plus' between asterixes, because when
> dealing with frequencies, you must multiply ratios of frequencies, not add
> them :)

I'm not sure of the exact timing of these things myself either, but I
believe the multiplication wrinkle is around Bach's time (the
well-tempered claiver) which is significantly later than 4ths and
5ths, which seem to go way back.

Robby