Any news about this? I'd like to write a plugin, that can import audio files and convert them to fft-images; And a second plugin that can render audio files from fft-images.
That way I can use affinity to extend my sound-design palette by using visual tools on acoustic material.
With range and resolution parameters for both conversion ways there would be a lot to explore and create.
Maybe even having a "Play" button, to instantly convert the current image to sound and play it - to always have a quick preview as you go.
Mathematically this would be easy, once you've implemented the Fast Fourier Transformation and audio codec.