Is the color->note map arbitrary or is there some logic behind it? I imagine it greatly affects the associations (including emotions) he has built up over the years.
>Is the color->note map arbitrary or is there some logic behind it?
One way of doing this would be to map from the electromagnetic wavelength of the color to a corresponding audible frequency.
Audible range is something like 32 to 32768 Hrz. Assuming speed of sound in air of 343 m/s, this translates to wavelength range of 0.010437 to 10.6875 m . This can then be mapped onto the visible spectrum of 390 to 750 nm.
