On 04/24/2018 06:06 PM, D. Hugh Redelmeier via talk wrote:
| From: James Knott via talk <talk@gtalug.org>
| The delay line was a coil of wire, with the data carried as acoustic | wave on it.
<http://www.computerhistory.org/revolution/memory-storage/8/309> <https://en.wikipedia.org/wiki/Delay_line_memory>
I suspect that all wire delay lines were magnetorestrictive, not acoustic. I don't know that.
At one point there were spring based audio delay devices use for adding reverb but they quickly got replaced with memory based solutions when dram started showing up. The huge growth in ram killed lots of very interesting technologies. Who remembers core memory with the 20x30 inch boards of very thin wires. Or bubble memory? -- Alvin Starr || land: (905)513-7688 Netvel Inc. || Cell: (416)806-0133 alvin@netvel.net ||