weinstro;598162 Wrote: > A while ago, I did A/B testing (but not ABX testing) between ALAC and > AIFF, and I could not hear a difference. > > > > Which may be why I couldn't hear a difference. I thought SB3's could > decode AIFF files natively. Could you please direct to where/how to > adjust the file type decoding settings to force this, verses > transcoding at the server? I'd like to do some comparisons between AIFF > > AIFF; AIFF > FLAC; ALAC > FLAC. > > It took time to figure it out, but I like the iTunes integration, and > I'm not in a hurry to have duplicate libraries unless there's a > compelling reason to do so. > > Many thanks!
SB3 decode "PCM" natively so WAV and aiff can be sent as PCM . But that is a completely pointless and futile exercise as all lossles formats sound the same. This is an old debate on this forum (se ourt audiophile section) and others . It can be proved that for all lossles formats the digital output on the squeezebox is identical (bit perfect) so there is no electrical or mathematical difference in the output signal. Other members have measured and compared the analog outs with audiodiffmaker and found them virtually identical, down to players noise floor and the residue is random noise. You don't really need to hassle trough this yourself doing level matched abx tests (all other test will make you victim to some bias and wont prove anything) When it can be proven by other means. Also FLAC has support for replaygain tags and I suppose ALAC has for iTunes soundcheck, this is function to level out volume difference between tracks and albums this does not alter the files but it tells the squeezebox to use offsets in the volume by for example -10dB (typical modern recording ) . This is a player setting "Volume Adjustment/Replay Gain" turn it off if going to compare wav flac side by side . However in settings > advanced > file types you find what your are looking for . Beware that changing these settings can brake usefull trancoding behaviors like making 24/96 files playable on an SB3 that only does 24/48 . Or simply use ALAC or FLAC, further flac is proven to be lossles countless times by third parties. Also you can do that every time you encode such file, FLAC has a compare function where it decode and compare to the input file on the fly to make sure it's identical, it is the verify option. Btw lossles audio is very different compared to mp3 or AAC it is better to compare it with winzip that compress documents for on the computer it does not lose data and the process can be reversed. -- Mnyb -------------------------------------------------------------------- Main hifi: Touch + CIA PS +MeridianG68J MeridianHD621 MeridianG98DH and assorted amps SiriuS, Classe' Primare and Dynadio speakers, Contour 4 Contour Center, and Contour 1.3SE rear ch. Rel Stadium 3 sub. Bedroom/Office: Boom Kitchen: SB3 + powered Fostex PM0.4 Misc use: Radio (with battery) PLEASE FIX BUG 112 http://bugs.slimdevices.com/show_bug.cgi?id=112 ------------------------------------------------------------------------ Mnyb's Profile: http://forums.slimdevices.com/member.php?userid=4143 View this thread: http://forums.slimdevices.com/showthread.php?t=84305 _______________________________________________ discuss mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/discuss
