Red vs Blue is ~700 nm vs ~475 nm (about because they are ranges rather than specific frequencies where most people who are not vision impaired will agree something is either red or blue).
Violin vs voice is more like 'triangular wave form with f, 2f, 3f, 4f, etc as the harmonics and voice would be 'mostly sinusoidal waveform with a bunch of vocal 'chords' acting as strings each of them with a sligthly different base pitch, with those same harmonics.
But if you were to compare for instance to a reed instrument the harmonics would look completely different.
Some singers by the way are capable of controlling their vocal chords in such a way that they can create rising and falling pitches at the same time.
Although I concede and agree with you on a basic level that base frequency is more like color than timbre, there are some other interesting factors.
One. Almost all instruments have different timbre depending on the pitch. At least at large scales, your voice's deepest note does not have the same timbre as your midrange, or your highest note. Similarly with pianos. I wonder if this is also true on a micro level between A and B on a piano?
Two. As I mentioned above, perfect pitch folks _don't recognize sine waves as well as piano notes_. Why? That's very curious.
In any case, I was also going to mention that musical notes are interesting because they loop. A is 440Hz and 880Hz. I was expecting to find something like 2x blue frequency = yellow, which would highlight a difference between color and sound. However, interestingly, that is not the case. The entire visible spectrum of light is within one "octave" of frequency. Fascinating... :)
7 octaves above cover the UV spectrum and 7 octaves below cover the IR spectrum. I guess our eyes could see 14 octaves with 50 instead of 3 sensors per pixel.
A more practical solution is a separate device, I mean organ, that works like our ear but for em waves: just one "pixel" but with lots of sensors and complex postprocessing to detect harmonics. This way we could hear em waves.
Not octaves. An octave is a doubling of frequency. When you go seven octaves below 'red' you are much, much lower than IR and when you go 7 octaves above blue you are way higher than UV.
Am I? 7 octaves above 400nm is 3-4nm, somewhere between extreme UV and x-ray. 7 octaves below 700nm is about 0.7mm - the end of IR and beginning of microwave spectrum. Unless I'm really missing something in my calculations.
Red vs Blue is ~700 nm vs ~475 nm (about because they are ranges rather than specific frequencies where most people who are not vision impaired will agree something is either red or blue).
Violin vs voice is more like 'triangular wave form with f, 2f, 3f, 4f, etc as the harmonics and voice would be 'mostly sinusoidal waveform with a bunch of vocal 'chords' acting as strings each of them with a sligthly different base pitch, with those same harmonics.
But if you were to compare for instance to a reed instrument the harmonics would look completely different.
Some singers by the way are capable of controlling their vocal chords in such a way that they can create rising and falling pitches at the same time.
https://www.youtube.com/watch?v=vC9Qh709gas