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Jan 12, 2016 at 22:30 comment added Solomon Slow @NorbertSchuch, Oops! I totally tuned out the "LP" in the title of the question. An LP, by definition, is twelve inches in diameter, and turns at $33 \frac{1}{3}$ rpm. That prety much invalidates my answer. :-(
Jan 12, 2016 at 21:55 comment added Norbert Schuch The subtle question about engineering it is how long you would still call it an LP.
Jan 12, 2016 at 21:54 comment added Solomon Slow @Floris, Engineering is all about tradeoffs. Perhaps we'll have to revive the 16" disk format that they used to use in radio broadcasting, or maybe go bigger still... Firsts thing though, is to get those GMO ears that the OP was fantasizing about.
Jan 12, 2016 at 21:52 comment added Norbert Schuch The OP asks for a concrete frequency, so it seems concrete frequencies are important. But I agree, you said "If ... ".
Jan 12, 2016 at 21:51 history edited Solomon Slow CC BY-SA 3.0
added 6 characters in body
Jan 12, 2016 at 21:51 comment added Solomon Slow @NorbertSchuch I do not claim that a 33 rpm LP can represent frequencies up to 20kHz. I said, "If...". I'll change the numbers if that makes you feel better, but the principle remains the same.
Jan 12, 2016 at 21:48 comment added Floris Note that if you rotate faster you quickly end up with the old 78 rpm format which could only record 8-10 minutes. The "L" in "LP" stands for "long"... 22+ minutes recording time.
Jan 12, 2016 at 21:45 history edited Solomon Slow CC BY-SA 3.0
fix a mistake
Jan 12, 2016 at 21:40 comment added Floris I realize that I was writing my answer as you posted yours... So we cover many of the same things, independently.
Jan 12, 2016 at 21:22 comment added Norbert Schuch Why do you claim that a 33 rpm LP can store frequencies up to 20 kHz? Do you have any sources? A search on the internet suggests this is not the case.
Jan 12, 2016 at 21:18 history answered Solomon Slow CC BY-SA 3.0