- Freemium • Proprietary
Photosounder is the first audio editor/synthesizer to transform any sound as an image and to create any possible sound from an image. It have an entirely image-based approach to sound creation and editing.
- Free • Proprietary
PhonoPaper is a camera app for playing pictures with encoded sound (PhonoPaper-codes).
- Free • Open Source
This program can display waveforms and spectrograms for audio files, as well as the reverse process, converting spectrogram images back into audio.