[pulseaudio-tickets] [PulseAudio] #262: Pulseaudio should switch sample rates when possible
PulseAudio
trac-noreply at tango.0pointer.de
Thu Mar 27 17:39:28 PDT 2008
#262: Pulseaudio should switch sample rates when possible
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Reporter: Florob | Owner: lennart
Type: defect | Status: closed
Priority: normal | Milestone:
Component: daemon | Severity: normal
Resolution: wontfix | Keywords:
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Changes (by lennart):
* status: new => closed
* resolution: => wontfix
Comment:
Sorry, this won't work: what happens if you have more than two streams
connected with different sampling rates? Reopen the device which causes
discontinuities?
Modern sound cards don't support changeable sampling rates anymore.
Digital resampling is how things should be done. That's how Vista does it
and MacOS too.
If you feel that PA takes too much CPU time for resampling: the reason for
this is that in the traditional model the client app did the resampling,
and thus the amount of CPU necessary for the resampling wasn't clearly
visible in top. Since PA does this now it suddenly becomes visible,
however the work was just moved to another process.
Also, the linear resamplers mplayer, gst and even alsa used and uses are
really really crappy. They take little CPU but sound like shit. In PA we
have a proper resampler which sounds good but has the side effect of
taking up more CPU time.
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Ticket URL: <http://pulseaudio.org/ticket/262#comment:1>
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