[ILUG] Shannon's law (was : Genesis)

[Paul Jakma]

On Mon, 6 Mar 2000, Niall wrote:

  the medium. For a phone line, however, to achieve Genesis' 45Mbit/s needs 
  e.g. a bandwith of 2MHz and S/N of 70dB. The traditional bandwith of a
  phone line is 3.1KHz (to allow frequencies from 300Hz to 3.4KHz) 

eh, surely a phone line would require a much broader bandwidth? the
human ear can detect noises up to 22KHz, or is speech limited to a
much narrower and lower frequency band?

  and S/N
  is a lot nearer 40dB than 70dB. Still, I trust the magic "interface
  device" will take care of all this.
  
ya pessimistic sceptic... :)

  
  Niall  O Broin
  
regards,
-- 
Paul Jakma	paul at clubi.ie
PGP5 key: http://www.clubi.ie/jakma/publickey.txt
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