XXHighEnd

Ultimate Audio Playback => Chatter and forum related stuff => Topic started by: Scroobius on October 24, 2009, 03:54:43 pm



Title: Jitter Question
Post by: Scroobius on October 24, 2009, 03:54:43 pm
Hello

Just wondering

Does increased sample rate reduce the effect of jitter. I was wondering if a native 96 signal when it appears at the DAC has inherently less jitter (ie jitter introduced in the playback chain) than say a native 44.1 file.

Also does upsampling reduce the amount of jitter introduced in the playback chain?.

P


Title: Re: Jitter Question
Post by: PeterSt on October 24, 2009, 09:13:24 pm
My take : the other way around. Something like "jitter is relatively equal but the samples are closer together (in the time domain) and thus the jitter prevails more.

Also, generally, the higher sample rate the DAC runs on, the worse it gets (this should count for NOS DACs only).

but

There is something like doubling the sample rate but keeping the samples the same, and it works out for the better. This time, the original one sample spreads over time and data related jitter is still the same. So, chances are twice as high now that jitter doesn't influence.
Notice that this is about Double (or Quattro) without upsampling !

For some this may sound as total BS. So, just my opinion !
Peter


Title: Re: Jitter Question
Post by: Telstar on October 25, 2009, 12:12:24 am
My take : the other way around.

Also my opinion, even with OS dacs..


Title: Re: Jitter Question
Post by: PeterSt on October 25, 2009, 06:36:06 am
Quote
Also my opinion, even with OS dacs..

Ah, true of course. But with OS DACs the output sample rate never changes (cannot change). So there is nothing to influence here (which I think was the idea of Scroobius).
Also be careful, because it is not said that an OS DAC running at a very high sample rate *thus* has bad jitter specs. This depends on many things more.