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Old 17th March 2014, 10:04 AM   #1
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Default Jitter

Not sure this post is in the right section ...
However If I connect a Music Player which streams the songs through my NAS - will this reduce jitter in conjunction with my DAC in opposite to just sending the signal directly from my HDD to the DAC?

Any thougths on this greatly appreciated. thank you.
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Old 17th March 2014, 10:55 AM   #2
Julf is offline Julf  Europe
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Quote:
Originally Posted by mBox View Post
Not sure this post is in the right section ...
However If I connect a Music Player which streams the songs through my NAS - will this reduce jitter in conjunction with my DAC in opposite to just sending the signal directly from my HDD to the DAC?

Any thougths on this greatly appreciated. thank you.
I think we need a bit more information. What DAC? How is it connected, and to what? When you say "sending the signal directly from my HDD to the DAC", are you saying that you have a DAC with a controller that can read a hard disk directly (using USB, I assume)?
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Old 17th March 2014, 12:39 PM   #3
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Okay. My setup is a NAS with UPnP where the music is stored. I have connected a RaspberryPi to my NAS (through ethernet). My BRIK DAC is connected through USB to my Raspberry running MPD.

DAC (USB) --> RASPBERRY --> NAS. My DAC is doing all of the decoding completely bypassing the onboard sound of the raspberry. All the Raspberry does is buffer 50% of the song before playing it.
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Old 17th March 2014, 04:06 PM   #4
Julf is offline Julf  Europe
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Originally Posted by mBox View Post
Okay. My setup is a NAS with UPnP where the music is stored. I have connected a RaspberryPi to my NAS (through ethernet). My BRIK DAC is connected through USB to my Raspberry running MPD.

DAC (USB) --> RASPBERRY --> NAS. My DAC is doing all of the decoding completely bypassing the onboard sound of the raspberry. All the Raspberry does is buffer 50% of the song before playing it.
There should not be a significant difference in jitter.
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Old 17th March 2014, 04:18 PM   #5
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There should not be a significant difference in jitter.
Copy that. So it doesn't really matter in terms of jitter if I'm accessing the files through ethernet with flow-control or if I'm accessing the files directly on the hard drive of the nas.

Last edited by mBox; 17th March 2014 at 04:31 PM.
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Old 17th March 2014, 11:16 PM   #6
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Where is beginning the Jitter with a NAS-streamer-DAC System
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Old 18th March 2014, 08:20 AM   #7
Julf is offline Julf  Europe
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Copy that. So it doesn't really matter in terms of jitter if I'm accessing the files through ethernet with flow-control or if I'm accessing the files directly on the hard drive of the nas.
No, doesn't matter. Both the hard drive interface and the ethernet connection are fully buffered and independently clocked, and the only possible influence on jitter is the CPU/IO load they cause, and that is rather theoretical (and the load is pretty similar in any case).
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Old 18th March 2014, 09:32 AM   #8
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Cool
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Old 18th March 2014, 09:00 PM   #9
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Could you describe your whole chain? What interface does your DAC have?

//
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Old 19th March 2014, 12:06 AM   #10
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NAS [Ethernet] --> Raspberry [USB] --> BRIK DAC [AUX] --> AMP

http://webbuilder3.asiannet.com/ftp/...0Converter.pdf
6moons audio reviews: Brik Audio DAC and integrated amplifier

I'm using kernel streaming on the Raspberry. The stream's supposedly untouched.
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