[LAU] Best practices when using jackd over a LAN.

David Woodfall dave at dawoodfall.net
Wed Nov 1 19:22:11 UTC 2017


>On Tue, 31 Oct 2017, David Woodfall wrote:
>
>>I have been using jackd to play music from my laptop -> server -> hifi.
>
>Have you also tried zita-njbridge?
>
>It has been some time since I tried netjack (or zita-njbridge). At 
>least one machine upgrade...
>
>Also, you may want to look into open AVB which has jack to jack 
>capability and with the right nic will allow your audio stream to have 
>priority over other network traffic. But it is more to set up.
>
>In any case, if there is more than one audio card some resampling will 
>have to happen (even with AVB with most consumer AIs). In the case 
>above, your hifi will have to be master I am not sure in that case why 
>there would be a server in the middle, but it looks like you have the 
>server getting it's sync from the hifi and then the laptop gets it's 
>sync from that? Is the network used for other things besides sound? Is 
>audio traffic prioritized? In all machines? In any switches?
>
>Looking into AVB and or AES67 and the requirements for no dropout 
>sound may be helpful. Netjack is designed for single hop, no other 
>network traffic, no switch, audio transport. zita-njbridge is designed 
>to handle switches and some other traffic a bit better. The standard 
>streamers like icecast, etc. use long latency end to end (500ms or 
>more) to avoid dropouts.
>
>So in the end you have to choose your own priorities in sound quality 
>and latency as well as how much money you want to spend and how much 
>time setting it up.
>
>--
>Len Ovens
>www.ovenwerks.net

Thanks. I'll look into those. It is a single hop (well two if you
include the router itself). I have never setup any sort of priorities
for traffic. My router has some control over traffic priority, but
only for wireless it seems.



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