Russell Tiedt wrote in a message to Charles Angelich:

 RT> Hmm ... had a peek at Goldwave, and the slow down feature in my
 RT> copy only  goes to .50, and if my math is any good, I need around
 RT> .48 to go from 33 1/3  rpm to 16 rpm.

The actual speed is "16-2/3" -- so it's half of 33-1/3...

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