SNR calculations (was Re: setup.exe missing from FTP site)

[Warren Young]

Brian Dessent wrote:
> But when you just want to use dB to represent a unitless ratio, then I
> agree with you it's simply 10*log(ratio).

Yes, bytes are more closely analogous to volts (6 dB per doubling) than 
watts (3 dB per doubling).

This page explains why there are apparently two ways to calculate decibels:

http://arts.ucsc.edu/EMS/Music/tech_background/TE-06/teces_06.html

In actual fact, they're the same calculation, but it's easier to 
understand that in a volts vs. watts (power) context than in the tongue 
in cheek context we have here.