Actually your eye can only detect three "pitches" of color. Red, green and blue. Any particular wavelength (frequency/pitch) within the visual spectrum will cause one, or some combination of these receptors to fire. That's why your computer monitor can fake any color out of red green and blue. Your eye doesn't notice all the missing wavelengths.zircon wrote:Just on a side note, I think the term "perfect pitch" is appropriate even if you can't tell "440" from "440.00001". I compare it to your sense of sight. I can look at red and green and know that they are red and green, respectively. If you only increased the brightness of the red hue fractionally, I would not be able to detect that. The human eyes have a threshold for that kind of thing. However, that does not mean I can't see perfectly. Likewise with perfect pitch.
The ear however is different, you essentially have receptors for every frequency across the auditory spectrum. The cochlea is a little spectroanalyzer in your ear. The ear doesn't sample, rather it resynthesizes.
But yes, "perfect pitch" is a fine term for it, even if you're a few cents off. It's a lot more perfect than most people who can't tell a blue note from a purple one.
