My friends are wanting to create an app that would vizualise music in 3-dimensional but I cannot understand what they want to vizualise. Could someone help me with this? Does there exist this kind of apps and what are they called? What kind of properties are good to vizualise in music with many dimensions?
closed as not a real question by Wheat Williams, Dr Mayhem♦, Jason W, Matthew Read♦ Mar 15 at 15:52
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The usual 2 dimensions are time and pitch. In standard notation, x is time, y is pitch.
A 3rd dimension could be velocity of note down event.
But there are plenty of other things you COULD put in like current root note of chord, chord type(major/minor/7th/etc), pan of the mix, volume of the mix, hold pedal, notes on ALL the other tracks beyond, say, the piano track you're playing, etc.
If you want to know what other dimensions could be, ask your friends who are giving you specs. If you're the developer and they're the spec guys, just realize that pulling good specs out of users can be pretty brutal :)
I'm doing a course at the moment and there's some people talking about drawing with a piano, which maybe what your friends are discussing. If you want to search it out, it's a public google+ community called Learning Creative Learning and the post is about creative coding with processing.org. Obviously the computer screen is 2D but the illustration looks 3D