In article
<CAOnWdojXiSvO2BNSfgk2tdghtuDwt1ynNgAnp5s7FPKbpKhM5w@mail.gmail.com>,
Reuben Thomas <rrt@sc3d.org> wrote:
> On 8 June 2016 at 17:13, Jim Lesurf <jcgl@audiomisc.co.uk> wrote:
> > In article
> > <CAOnWdogzYmCLi2FN2NfTtp54EwNe8H00V4HMwQEkUbMnZaH3HA@mail.gmail.com>,
> > Reuben Thomas <rrt@sc3d.org> wrote:
> > > Using rpcemu 0.8.14, emulating an SA-RPC running RISC OS 3.71, I
> > > notice that pulseaudio is running with a constant appreciable load
> > > (~20% of a core on my machine), which stops when I quit rpcemu.
> >
> > > This would be less than ideal even if I had sound switched on, but
> > > it's off!
> >
> > I can't advise on the reasons why the above occurs. TBH one of the
> > first things I do with any new Linux install is to try and beat
> > Pulseaudio to death with a big stick as I find it a real PITA! If I
> > can't kill it, I do what I can to isolate and bypass it.
> >
> #I had trouble with Pulseaudio the first time I tried using it, but for
> years now it has been stable and reliable out of the box, and provides
> functionality (such as audio I/O sharing between apps and per-app volume
> controls) unmatched by ALSA, along with non-mind-numbing configuration
> (which I hardly ever have to use). I can't speak for those who are doing
> live sound processing, where low-level considerations may apply.
Just to explain briefly, although I realise it isn't directly relevant
here.
For me the problem is that any 'mixers' like PA tend to fiddle with the
audio data. Often coverting *everything* to the same sample rate and bit
depth. This gets in the way when you want each file to played 'bit perfect'
and your using sample rates up to 192k. i.e. *not* letting everything -
even audio CD format - get played out at 48k. In addition PA in my
experience often overrules what I've set elsewhere. So if the concern is
audio *quality*, PA can be real problem. Whereas ALSA makes it simple to
get a 'direct path' from player software to playing hardware. Pass the
parcel.
Jim
--
Electronics http://www.st-and.ac.uk/~www_pa/Scots_Guide/intro/electron.htm
Armstrong Audio http://www.audiomisc.co.uk/Armstrong/armstrong.html
Audio Misc http://www.audiomisc.co.uk/index.html
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