Sound Portraits (2015)
By converting a jpeg image into a Wav file an image can be stored as a sound. This sound can then be decoded back into an image using a spectograph.
I recorded my sound images onto tape and then made an infinite tape loop chassis that could hold a loop of sufficient length and used the spectogram as the tape cover.
I have also made several tapes using slow scan television (SSTV), an image transmission technology popular among ham radio broadcasters and was used to send the first images from the surface of the moon back to earth. The image quality is much higher than the spectogram method and also contains colour information, but requires much more tape.