[Jackit-devel] Re: [PD-announce] Re: [linux-audio-dev] ANN: k_jack v0.0.0.5 and Mammut v0.15

Kai Vehmanen kai.vehmanen at wakkanet.fi
Fri Jan 24 12:03:00 UTC 2003


On Fri, 24 Jan 2003, Kjetil S. Matheussen wrote:

> I'm at work now, and we ~only have delta cards. At home I use a built-in
> sound-card on an nforce chipset. But I get nearly the same good
> performance in pd here as at home. So here is delta44 parameters:

But how do you know you are not losing any data? I mean...

> kjetism at hensten /proc/asound/card0/pcm0c/sub0 $ more hw_params
[...]
> stop_threshold: 1811939328

... there seems to be no xrun detection enabled. At least pd-0.36 seems to
set "snd_pcm_sw_params_set_xrun_mode(alsa_device.inhandle, sw_params,
SND_PCM_XRUN_NONE);".

This means that you could be having small xruns all the time! Of course,
really long breaks are always audible, but shorter ones are sometimes
quite subtle. Still, you are losing audio data.

--
 http://www.eca.cx
 Audio software for Linux!




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