[linux-audio-user]Skype and internet jamming [was Howto record PCM (from realplayer)?]

Steve Harris S.W.Harris at ecs.soton.ac.uk
Thu Mar 3 23:17:29 EST 2005

On Fri, Mar 04, 2005 at 12:54:23 +1100, Shayne O'Connor wrote:
> Mark Constable wrote:
> > Ken Dawson wrote:
> >
> >> ...
> >> It's almost as if there must be some way of interposing an ALSA-aware
> >> (and re-directable) loopback device for /dev/dsp.  I can almost taste
> >> it, it's so close.  But my poor brain sizzles before I get the taste
> >> of the solution. (or something).
> >
> >
> > Another similar issue is correctly capturing both the
> > incoming and outgoing streams of skype on the same machine.
> just taking this a bit further - has anyone experimented with
> live-jamming over skype?
> i've done a couple of tests, but only one-way so far (i've got my mate's
> bass at the moment, so we haven't tried live jamming). i'm pretty sure,
> though, that latency would be the killer - i do some stuff with the
> local community radio station, and me and my mate found a pretty solid
> hardware codec that wasn't being used - it plugged into any phone line
> and would send whatever you put into it (there were two line inputs and
> two microphone inputs) through the phone lines to the decoder at the
> station.
> when we did live broadcasts from a local club, though, i would monitor
> from the club side what was being fed back from the station's broadcast
> (just to make sure it didn't drop out) - but with the headphones on,
> listening to the band up on stage being broadcast back out to me, there
> was at least a half-beat delay (mind you, i couldn't take the headphones
> off, because this delay turned what was an average reggae band onstage
> into a dubbed-out head-freak).

As long as your far enough apart that you cant hear each other (thats the
point, right ;) I dont think the delay is much of a problem, the latency
on skype is pretty good.  I think youre more likly to hit quality
problems, its pretty good for voice, but probably not for music.

- Steve

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