MP3 on punched cards (was RE: 1" paper tape buy ?)

Dennis Boone drb at msu.edu
Thu Feb 26 15:28:55 CST 2009


>     Assuming a 6MB MP3 file and 40 bytes per card:
>
>     6 * 1048576 = 6291456 bytes
>     / 40 bytes per card = 157286.4 (157285) cards
>     * .178mm card thickness = 27996.73 mm high
>     / 25.4mm per inch = 1102.233465 inches
>     / 12 =  91.85278871 (91.85) feet

Hell the university used to punch several times that many cards every
quarter just for registration. :)

But if you treat them as binary cards, you could get 120 bytes per
card.  Three to one compression!  *And*, 400cpm readers are still
available; that'd give you 384 kbit/sec read rate...

De



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