Pat Farrell;223369 Wrote: > Robin Bowes wrote: > > Actually, SNR is the power ratio of the signal to the noise, i.e. > > Actually, it is either power or amplitude, you just have to change the > > multiplier from 20 to 10
*Actually* it's the power ratio or the square of the RMS amplitude, i.e. Ps/Pn or (As / An)^2 You can then take the "squared" factor outside of the log where it becomes a multiple of 2, which is where the "20" comes from (10 x 2), e.g.: 10 log10( (As / An)^2 ) = 20 log10( As / An ) R. -- robinbowes ------------------------------------------------------------------------ robinbowes's Profile: http://forums.slimdevices.com/member.php?userid=480 View this thread: http://forums.slimdevices.com/showthread.php?t=37902 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
