[PD] simple rgb color organ

[Claude Heiland-Allen]

Derek Holzer wrote:
> Hey gang,
> 
> before I go reinventing somebody else's wheel... has anybody written 
> something that takes a (sound) frequency in Hz or MIDI note and outputs 
> the transposed color in RGB values? Along these lines:
> 
> F#44 = 737 nm(Infrared)
> G 44 = 696 nm(Red)
> G#44 = 657 nm(Red)
> A 44 = 620 nm(Red-Orange)
> A#44 = 585 nm(Yellow)
> B 44 = 552 nm(Green)
> C 45 = 521 nm(Green)
> C#45 = 492 nm(Green-Blue)
> D 45 = 464 nm(Blue)
> D#45 = 438 nm(Violet)
> E 45 = 414 nm(Violet)
> F 45 = 390 nm(Ultraviolet)
> 
> Or even something that takes the light wavelength in nanometers and 
> gives separate RGB values? I'm working on a simple color organ for a 
> friend this week.

http://www.fourmilab.ch/documents/specrend/

Have fun..