cliveb;482628 Wrote: > Remarkably, in all of the replies so far, nobody has pointed out that > your SB Classic can play 24 bit files anyway. The Touch can do 96kHz > sample *rate* (while the Classic only does 48kHz), but they both support > the same bit depth. > Ah, thanks Clive. That's a relief.
cliveb;482628 Wrote: > > Unless the music you're sampling has signal below -96dB, this is > false... > > Suppose you have an original analogue signal with a S/N ratio of 80dB. > What this means is that the noise in that signal makes it impossible to > know what the instantaneous voltage of the signal really should be > beyond a certain degree of accuracy. For a 80dB S/N ratio, the degree of > that uncertainty is about 1 part in 10,000 (or thereabouts). If you > digitally sample it at 16 bit accuracy (where the degree of uncertainty > in measuring is about 1 part in 65,000), then all that happens is that > you are unable to accurately sample the noise below the -96dB point. So > you end up with a recording where all of the wanted signal and some of > the noise (between -96dB and -80dB) is captured perfectly, and the rest > of the noise (below -96dB) is lost and replaced by other noise (also > below -96dB) that is generated by the digital sampling process. > > If you sample the same analogue signal at 24 bit accuracy, you also > perfectly capture the wanted signal, and this time get to accurately > capture the noise down to -144dB. So by recording at 24 bit, all you do > is more faithfully record the lower level noise. > > (Note that all the figures used are theoretical maxima - in practice a > typical 16 bit sampler will probably only get down to about -90 or > -93dB, and a good 24 bit sampler will get down to about -120dB). I'm curious, but technically challenged it seems, so I searched for additional info on these 24 bit Beatles remasters and happened upon this thread which debates the technical benefits of 24 bits versus 16 bits for these Beatles release. http://www.stevehoffman.tv/forums/showthread.php?t=198394&page=11 It seems that the principals involved in this debate believe the benefit of 24 bit over 16 bit extends beyond simply going from 96dB to 144dB but rather involves capturing a "finer" value of amplitude at each sample in the range where the music actually lies. Is this wrong or right? It's still all confusing to me. -- Kellen ------------------------------------------------------------------------ Kellen's Profile: http://forums.slimdevices.com/member.php?userid=16569 View this thread: http://forums.slimdevices.com/showthread.php?t=71039 _______________________________________________ discuss mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/discuss
