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Is there a way to convert a color to a sound? Does orange in particular have a kind of Hz/audio equivalent other than 5e+14?

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5 Answers 5

Yes, you can convert color to sound.

No, orange doesn't have a particular frequency or sound. You can pick whatever mapping you want. Do you want orange be a specific sine frequency, or should it represent a square wave? You pick.

AudioPaint and Coagula use the color of a pixel to determine the panning of the sound.

Spectrograms often use color to represent the amplitude of a frequency component. Software like Adobe Audition will do the inverse function to convert an image back into a sound.

I've been trying to go the opposite direction, using audio frequency content to determine color of a waveform:

alt text

This is the same method used by Freesound.org, using the spectral centroid of the sound to produce a monochromatic color, but shaded to try to show the density of the samples as well as the peak amplitude.

What I'd really like to do is map the spectrum of the sound onto the spectrum of the color, so a low frequency sine would be red, a high frequency sine would be blue, and a combination of both would be magenta. Last time I messed with it, I was trying to figure out a way to weight it so that logarithmic sine sweeps look like a rainbow, white noise is white, and pink noise is pink. I'm not sure if it's possible, though, because of the conflict between linear and logarithmic frequency axes.

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You can also take a look to Sonic Visualiser at: http://www.sonicvisualiser.org/

and also following the lead take a look at spear, a really cool app for visualizing sound in a different way:

http://www.synthtopia.com/content/2008/06/26/spear-free-resynthesis-app-for-mac-windows/

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Spear is awesome for making spooky voices... Would love to use it in a project though....!!! –  Kurt Human Aug 24 '10 at 11:56
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If you search the web you will find much conflicting information on which color is what pitch... If you take A = 440 Hz and keep doubling and doubling until you get into the range of light you will find ROYGBIV = F, G, A, Bb, B, C, D, E, F. Try it yourself.

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It does work, kinda :) endolith.com/wordpress/2010/09/15/… –  endolith Sep 16 '10 at 1:44
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Just the tip of the iceberg.

http://en.wikipedia.org/wiki/Synesthesia

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My wife is somewhat synesthetic (?) and has very specific color reactions to sound and music. Its kind of creepy. –  David Rovin Sep 15 '10 at 21:08
    
How's this for statistical abberance: I know 2 synaesthetics who both work at Google. They have arguments over why the G in Google just isn't blue, no, it can't be, it's just wrong...but each of them had their own opinion of the right color for the letter G! One once commented that our vanilla ice cream tasted purple. Fascinating phenomenon, made all the more interesting by the fact it's so different for each person. –  NoiseJockey Sep 16 '10 at 0:15
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On a somewhate related note, there was a great article or lecture I read once from Walter Murch talking about sound in terms of color. Only reference I can find of it now is here: http://bit.ly/dumkrz

If anyone knows where that article is, please let me know! (Thought it was on filmsound.org but couldn't track it down...)

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