[pulseaudio-discuss] pulseaudio-discuss Digest, Vol 20, Issue 7

[CJ van den Berg]

On Tue, Nov 28, 2006 at 12:28:19PM +0100, Max Kempter wrote:
> For a system with 20 Server (each per host). For each Host it should be
> possilbe to send to the others simultaneously. So in the worst case I have
> 19*20 active channels.

Does each host transmit 19 *different* streams? If not, you really should be
looking at multicast, which would give you only 20 streams on the wire.

> When I only want to send voice I have a data rate for one channel about
> 64kb; for 19*20channels=380 channels; if I send each 3 ms a packet the
> data rate will go up to 92,1 Mbit/s (include the Ehternet-, IP-,UDP-, RTP-
> Header and 5 per cent RTCP- Traffic).

3 ms sounds pretty over the top. Do you really need that? The standard for
realtime audio streaming is usually 20ms (ie. 50Hz), which would give you
around 25 Mbit/s for 380 streams and only 1.3 Mbit/s for 20 multicast
streams.

-- 
CJ van den Berg

mailto:cj at vdbonline.com
  xmpp:cj at vdbonline.com
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