Subject: Re: [linux-audio-dev] Distributed audio processing
From: Abramo Bagnara (abramo_AT_alsa-project.org)
Date: Wed Oct 04 2000 - 23:57:20 EEST
John Lazzaro wrote:
>
> > Please can somebody point me to information on using a LAN to distribute
> > audio processing,
> > i.e. setting one or more computers up as dedicated audio servers and
> > streaming data between them?
>
> I'd suggest starting here:
>
> http://www.cs.columbia.edu/~hgs/rtp/faq.html
>
> RTP is a transport protocol for shipping media around networks,
> a product of an IETF working group. I'm currently embedding it
> into sfront, and found that its very well thought out ...
>
> http://www.cs.columbia.edu/~hgs/rtp/drafts/draft-ietf-avt-rtp-new-08.ps
> http://www.cs.columbia.edu/~hgs/rtp/drafts/draft-ietf-avt-profile-new-09.pdf
>
> are the main specs to understand, but there are main auxiliary
> ones as well:
>
> http://www.cs.columbia.edu/~hgs/rtp/drafts.html
>
> RTP really makes sense if you intend to transport media around
> either as unicast UDP packets or as multicast -- the packet
> headers for sending the actual data have timestamps, sequence
> numbers, and source identification, and there's a complementary
> back-channel protocol, RTCP, for receivers to send info back to
> senders. If the sort of applications you're doing are ones where
> its vital for every audio data byte to be preserved, you can use
> some combination of forward-error correction:
John, I'd like to have some more info: to use UDP which advantages has
wrt TCP?
-- Abramo Bagnara mailto:abramo_AT_alsa-project.orgOpera Unica Via Emilia Interna, 140 Phone: +39.0546.656023 48014 Castel Bolognese (RA) - Italy Fax: +39.0546.656023
ALSA project is http://www.alsa-project.org sponsored by SuSE Linux http://www.suse.com
It sounds good!
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