[qiiuhdah] The sound of an image

Take a line across a grayscale image (perhaps from a camera) and play the looped brightness as a sound.  Probably go back and forth along the line to avoid a sharp click at the endpoints, similar to how JPEG does DCT.  User can can control sampling speed, affecting the overall pitch of the sound.

Instead of sampling a line, sample a circle.  Any closed loop.

2D Fourier transforms still mystify me, but they are possible.  It is probably no longer possible to do it as sound, so instead do an image-to-image transformation.

Sample many parallel lines.  Many circles, perhaps concentric, or identical circles on a grid.

Possibly useful as an accessibility tool for the blind, but probably just a toy, or art.