Internetworkers: http://www.ibiblio.org/internetworkers/

[Simon Spero <ses AT tipper.oit.unc.edu>]

The vic-20 tape drive operates at 300 baud, but data rate would be 
slightly less due to checksumming (I don't know how much overhead this 
takes).

 If we ignore the checksum, that gives a storage capacity on one side of a
90 minute cassette of:  45*60*300 = 810,000 bytes ( = 791KB)

The number of minutes needed to store one minute of mp3 at a given bit 
rate can be found by dividing the bitrate by 300. For example, one minute 
of digital audio at 56kbps would take over 180 minutes (more than two 
casettes). 

I'm now curious as to what 300bps audio would sound like; anybody want to 
see if LAME will die laughing if you try it?

 I know there were predictive encoders that could operate down around that
level, but they were voice only and were supposed to be pretty awful
sounding even for that. (correction after web search: these were designed
for 2400bps and up)

Simon

http://www.devili.iki.fi/Computers/Commodore/C2N/Service_Manual/front_page.html
http://asylum.sf.ca.us/pub/u/howitt/lpc.tutorial.html

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