The small app I had been working on is now available in the Apple Appstore for iOS, this app takes a photo with your camera or from the photo library, and interprets that image as audio – the primary use case is to turn images of audio waveforms back into audio (but it will have a go at any image given to it!).
The result is a distinctly lo-fi sound, or suitable sample fodder from hand-drawn single cycle waveforms, which can be exported as wav files for use in other audio applications.
Available on the Apple Appstore
brianbar.net 