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

Shayne O'Connor forums at machinehasnoagenda.com
Fri Mar 4 01:28:25 EST 2005


Steve Harris wrote:

>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.
>  
>
actually, the quality of music broadcast through skype (setting the
"mix" channel of a sblive to be captured) seems to be just as good as if
you were hearing it locally ...

i'm gonna try and have a jam with a buddy over the weekend and see how
it goes ...

shayne



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