Waveform slide, one of two, part of the Oramics machine, designed and made by Daphne Oram and made by Graham Wrench, England, 1966. The Oramics Machine was used to create electronic synthesized music and developed by Daphne Oram. Daphne was a co-founder of the BBC Radiophonic Workshop.
The Oramics machine created sounds to order, being fed waveforms that were drawn on 35mm film. Ten strips of film could be 'played' simultaneously.