Re: [linux-audio-dev] alsa ethernet streaming?

From: Garett Shulman <shulmang@email-addr-hidden>
Date: Fri Jun 17 2005 - 20:27:14 EEST

Asbjorn, LDAS looks perfect. Can you give more detail about the status?
-Garett

Asbjørn Sæbø wrote:

>On Thu, Jun 16, 2005 at 11:38:24AM -0600, Garett Shulman wrote:
>
>
>>Hello, I would like push audio streams over ethernet and was wondering
>>what avenues people have tried.
>>
>>
>
>I have an interest in the same thing, but with an emphasis on low
>latency. I did a little bit of looking around this fall, but did not
>find much. There are of course the normal streaming solutions, like
>Icecast, which seem to work well, but has to large a latency for my
>purposes (distributed music playing).
>
>What I ended up with was writing my own. (Currently with assistance
>from Lee Revell.) It has not come very far, but I am able to stream
>music from one computer to another. It also deals with transmission
>problems (lost/duplicate/out of order/late packets) and drift
>adjustment. I have plans to release it in the not to distant future.
>See <URL: http://www.q2s.ntnu.no/~asbjs/ldas/ldas.html > for more
>information.
>
>Then there is jack.udp, which I discovered half a year after starting my
>work. This seems like a good tool. It streams jack data between two
>jackds running on different computers.
>
>
>There are a couple of reasons I didn't switch to jack.udp myself. As
>far as I have understood (and I may well have misunderstood), jack.udp
>does not do drift adjustment, so it will have synchronisation problems
>if you want to use it between two computers with un-synched soundcard
>clocks driving jackd. It will work well if one of the jackds is a
>"slave" jackd, though. (Somebody please correct me if I'm wrong here.)
>
>Also, the jack format keeps samples as 32bit floats. Although I do not
>care that much for bandwidth issues, I found that doing away with half
>of this, using 16 bit PCM, was valuable when transmitting over the
>Internet in general.
>
>Asbjørn
>
>
Received on Sat Jun 18 00:15:07 2005

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