(15-Aug-2014, 14:32)oxfordaudio Wrote: [ -> ]yes it was - usually after 30-60 minutes playing consistently; often just loud white noise, sometimes distortion over the music.
And is this 30-60 minutes immediately after starting Devialet and AIR (vs having them turned on and connected for a while prior to listending)?
This is a rather extreme case. Most of us here can stream well over an hour without getting the problem. So, even if this problem has a common root cause, the manifestations are system specific. Well, I guess this is not news to anyone.
Hello
I had a incident tonight, playing 96KHz 24bit music.
It was a little different this time, first a short peak of 1 second, and then 20 seconds later it came back for good.
I booted the Devialet AIR app, and the noise is gone.
My PC have been running for around a week—I more or less only use it for Audio, it is running WIN 8.1
Kind regards
Morten
@
Morten - how long had you been playing music before the dreaded white noise appeared?
For the record, I've had the short burst of white noise before full white noise pattern myself, but only on rare occasions. It all seams slightly random.
Hello.
Around 30 minutes...
But, the PC have been running for many days, and played several hours of music--often for many hours a time without any issues at all, I have been playing both normal 16bit 44,1Hz and high resolution.
I have set the buffering size back to 0KB some days ago in foobar, before it was 1GB—I will try to set it back to 1GB and see if the issue will occur again.
I should perhaps mention that all is hardwired.
Kind regards
Morten
(29-Aug-2014, 11:15)Morten Wrote: [ -> ]Around 30 minutes...
But, the PC have been running for many days,
Morten, have the AIR application been running all the while? My theory is that restarting the AIR application does some kind of reset. But rebooting PC from time to time would also not hurt. I still suspect AIR is corrupting memory, when run for a long time. In my experience, the buffer settings (either in FooBar or in AIR) don't make any difference for this issue. Insufficient buffers could only manifest themselves in music interruptions, not white noise.
Yes it has, however I can see that it when I use my PC for Netflix it is gray, but it is newer shut down.
Br Morten
Yesterday, I asked Devialet for a status update. The answer : engineering is looking in to it with a dedicated team, but no indication when the problem can be closed.
Let's hope for the best and depend on USB for the time being.
I knew that I'd be doing a lot of listening today with just iTunes 16/44. (I wanted access to playlists that I only have set up in iTunes) To get as close as possible to bit perfect, I switched the pc's sound card GUI settings to 16/44 cd quality, and did the same in the Devialet AIR GUI, iTunes has windows audio session API selected.
The system ran for over 6 hours straight, no white noise, perfect. Normally I have everything set to 24/192, in case I run hi res music via JRiver WASAPI, with this set up white noise usually appears in an hour or so, sometimes sooner.
I have no idea what the actual significance of this is, but I'm sure that it is significant!
(30-Aug-2014, 17:22)Confused Wrote: [ -> ]I have no idea what the actual significance of this is, but I'm sure that it is significant!
Probably, it's a good idea to report this to Devialet. One possible theory: since you'd discovered that with iTunes on PC the 16/44 material was up-sampled to 24/192 (when that rate was your default setting), by setting it to 16/44, you effectively reduced AIR's memory footprint. If AIR has memory management issues (as is my main hypothesis substantiated by indirect evidence), limiting the amount of streaming data may mask the problem for a longer period of time.
@
AlexS - Yes, I was thinking myself that this does offer some circumstantial evidence that certainly fits your theory. For the record, I was running AIR for about 8 hours straight again today, no white noise, same result.