Julf wrote: > User marcoc1712 started 'this thread' > (http://forums.slimdevices.com/showthread.php?104198-Disk-and-folder-browsing&p=828137&viewfull=1#post828137) > in the developer forum. The tread is primarily about possible bugs > associated with trying to stream pure pcm or wav format files. In order > to keep that thread focused on the actual functioning of the software, > this thread, here in the Audiophile subforum, is discussion about the > possible claimed benefits (and disadvantages) of "raw" pcm vs. flac. > > Technically wav isn't a very good format for streaming, so anyone using > it probably has reasons for doing so. The usual reason is the audiophile > folklore about "uncompressed" sounding better than lossless compression. > > > Often the folklore is based on misunderstanding the nature of lossless > encodings, but a slightly more sophisticated argument is based on the > supposed extra CPU load caused by flac decoding. This ignores the added > processing and IO load (not just in the player application, but also in > the kernel and device drivers) caused by the redundant data - and > assumes that small differences in CPU load would cause audible > differences. > > Archimago 'measured the effect of cpu load on jiitter' > (http://archimago.blogspot.com/2013/03/measurements-hunt-for-load-induced.html) > in 2013, and concluded that "symmetrical jitter sidebands are no > different whether CPU or GPU load high". > > So far I have not seen any measurements or controlled listening tests > showing any audible difference. I would welcome pointers to either.
what's the chain ? flac -> sox -> aplay -> pcm -> kernel -> drivers -> device wav -> aplay -> pcm -> kernel -> drivers -> device so kernel and drivers see the same amount of data unless the sample rates and/or bit depth are different, but then you're comparing apples and pears. Touch optimisations http://touchsgotrythm.blogspot.co.uk/ ------------------------------------------------------------------------ SBGK's Profile: http://forums.slimdevices.com/member.php?userid=52003 View this thread: http://forums.slimdevices.com/showthread.php?t=104227 _______________________________________________ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/audiophiles
