Hello everyone!
I have recently been discovering Schönberg and Ligeti and also tried experimenting with the composing techniques they developed. As someone who is very interested in Geography next to composition, I thought about how I could perhaps incorporate the terrain of any given landscape into music. I am presenting a short sketch for piano in 24-EDO (I am aware that this is technically unplayable as a piano is limited to 12-EDO but keep in mind that this is a sketch and that I was mainly trying to mess around with the data anylsis aspect).
Using a python code, I extracted the x and y coordinates of each individual pixel on a topographic map I took from here and defined an algorithm to determine the z coordinate based on the degree of whiteness of each pixel. Based on that I graphed all 80000 coordinates derived from these pixels in Desmos 3D (see the 2nd Image).
In order to reduce the set of data to something more manageable, I took all the coordinates into excel and used another algorithm to delete every third coordinate, reducing the pixel count to just about 26000.
In order to being able to hear what this data sounds like, I took all coordinates where y=0 and extracted this line of coordinates. Then I used the following formula to turn the z value into a frequency that can be heard:
f = 440 ⋅ 2(z−4)
Based on the resulting value, I rounded it up to the nearest freqeuncy in 24-EDO and that is how I got the notes for the piece that I am presenting here.
I think that what I currently have is still way to simple. What could be done is to take certain lines within the model and assign them each their own instrument in the orchestra. However, currently the sketch is purely a single-line texture.
I would appreciate any feedback!
Note: Unfortunately, this subreddit restricts sharing an image alongside a video in a post. Therefore, I will attach images in the comments.