Alex,
Thanks for posting these articles. An informative and enjoyable read. I was surprised to see how involved John was on the technical and engineering side. He deserves a lot of credit for accurately predicting
convolution reverb in 1984. The first commercial convolution reverb, Sony's DRE S777, appeared in 1999 (see link below). John was always ahead of his time.
http://www.quietcity.co.uk/archive/HSR_3.jpg "I'd like a sampling device that could analyze rooms ... so that you could walk into St. Paul's Cathedral, say, and analyze the reflections accurately enough to be able to store them as a reverb pattern in a machine."
http://www.soundonsound.com/sos/dec99/articles/sonydres777.htm "One of the most exciting developments in sound processing technology this year was the announcement from Sony of a dedicated reverb unit which applied ambiences 'sampled' from real acoustic spaces. Now the theory is reality."
Regards,
Mike