Brad Stewart, Covox Brad Stewart was the co-founder and chief designer of Covox, the company that created Covox VoiceMaster. VoiceMaster was speech digitizer and voice recognition hardware for the Commodore 64, Atari 8-bit, and Apple II computers. Covox's own demonstration audio tape describes it well, although the demo tape that I found doesn't mention the Atari. This interview took place on May 21, 2020. Aerosynth Brad's blog post about Covox Voice Master Kay plays with VoiceMaster in 2014 Covox Voicemaster Demo cassette A Bionic Approach to Speech Processing Escape from Planet X at AtariMania