arnyk wrote: > The article could convince a naive reader that JS has measured an > improvement due to his device, but > > "What I have been finding in looking at DACs etc with USB inputs is that > there is what I am calling "packet noise". This is bursts of noise > caused by the USB receiver processing the packets of data. This noise > shows up on both power and ground planes. Since the rate of packets is > 8KHz there are strong components of this noise in the audio band. This > noise can cause jitter in clock oscillators, reclocking flops, and DAC > chips. It can also go directly into noise on the output of DAC chips." > > This is the same 8 KHz that noise that I posted Archimago's FFT of. Been > there, done that FFT many times. He calls it packet noise, I call it > framing noise, they are the same, no controversy. > > Unfortunately there are many other sources of framing noise in audio > systems, including optical disc players, any HDMI link, any network > connection, any SPDIF link, a digital music player operating off of any > kind of media, you name it. It can leak into analog outputs as a > coherent signal, and the processes that causes it can also cause > jitter. > > What I still don't see is reliable evidence that something that happens > outside of a box so afflicted (e.g. USB links) can significantly change > these processes inside the box. Furthermore while the world of audio is > full of framing noise, it is also full of clever engineers who push it > way below audible thresholds so that the only people who seriously think > they can hear it are usually placebophiles doing unbelievably unreliable > listening tests.
No evidence apart from placebophilephobes making themselves unhappy at the thought of the regen device existing and everyone else that has ordered one being very happy with proceedings. Does the idea of people being happy upset you ? 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=103684 _______________________________________________ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/audiophiles
