O'Beirne demonstrated this to me (and others) many years ago (in the sixties?) It was at a conference at Girton, Cambridge, I believe. I think that it was a film loop, with sound, that he'd made. R. On Mon, 27 Oct 2003, John Conway wrote:
On Tue, 28 Oct 2003, Steve Gray wrote:
Hello John, A few decades ago I visited the A.I. lab at Stanford and Les Earnest showed me around. He demonstrated something he called the "ever-rising tone." It was most impressive. Do you have any idea where I could get a copy of it (in almost any form, audio or digital)?
[Another John asnwering]
I don't know. But I once saw it combined in a neat way with one of Escher's infinitely ascending staircases. As one watched a ball bouncing perennially upwards, one heard the ever-rising tone! I'd love to see and hear it again.
John Conway
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