SpectraSketch - Max for Live Audio Effect
This device reads image files as frequency spectrum data, allowing for a variety of effects including unique filtering, phase manipulation and sound generation, or simply encoding the image into the frequency spectrum of your track as a hidden message or easter egg. The frequency scaling of the image can be curved from linear to logarithmic, and constrained to a particular range of frequencies.
Each colour channel has individual scaling for amplitude and phase and can be freely panned between the left and right channels, giving you fine control over the sound.
In additive mode, a positive amplitude depth will produce sounds without any input, allowing this device to function as both an audio effect and an instrument in its own right.
The image can be flipped, rotated and inverted to offer several options without having to edit the image, and the image can be quickly reloaded after making changes in an external editor.