XXHighEnd

Ultimate Audio Playback => XXHighEnd Support => Topic started by: manisandher on May 14, 2014, 09:02:05 pm



Title: Burst of white noise
Post by: manisandher on May 14, 2014, 09:02:05 pm
Since I switched to a low SFS (0.5), a low clock res (min for system) and a lowish buffer in the NOS1 control panel (4ms I think, but I can't check right now) I've had a burst of white noise coming through my speakers on two separate occasions.

On each occasion, this happened immediately after a certain sequence of events. Firstly, I loaded and started playing some tracks. Within the first couple of seconds of playback, I pressed Alt-X and stopped the playback for some reason (wrong album, etc). When I then pressed play again, I received the burst of white noise through the speakers. On both occasions, the internal fuses of my mono amps blew.

The speakers I'm currently using are very low efficiency, so I usually have XX's vol set to between -12 and 0. So the white noise might have potentially been at full scale.

In all the time of using XX without a preamp, something like this has NEVER happened before. I'm convinced it has something to do with my changed settings. In any event, when I get my NOS1 back from its NOS1a upgrade, I will definitely not be using these settings.

Any ideas?

Mani.


Title: Re: Burst of white noise
Post by: dsm on May 14, 2014, 09:54:46 pm
I've had the burst of white noise also.  It happens to me when I have to many "alt"  commands in a row without waiting for the computer to respond.  Once,  I was quickly trying to lower the volume in unattended using the "alt d" command so I could talk to my 5 year old daughter when the white noise hit us.  I think we both had a slight heart attack.

Now I move very slowly when I hit "alt u, d" and I haven't had any issues.

David


Title: Re: Burst of white noise
Post by: PeterSt on May 15, 2014, 07:53:06 am
Mani,

I would dedicate this to a very coincidental happening with the sound engine stopping and restarting. Not that I would now how to mimic that but possibly you can bring it in a stop-start state it does not like (and notice this is all a-synchronous processes living by external commands).

How the fuses of your amps would blow by this is beyond me. Oscillation because of very high frequency signal ?
Notice that white noise is not that, but what you name white noise probably is "static" (the virtual window blowing type) and that is the most HF (wrong byte order).

Peter


PS: I myself received static only last week. This was the first time in 3-4 years or so. I must be lucky because *I* am always attempting limits, do (programmatically) things wrong etc., so it must be have been pretty safe(ly built) in there (by myself).

PPS: SFS of 0.5 is not low these days. 0.05 is. And I see nothing wrong with your settings anyway.