Theres an error which occurs, however not always and sometimes very
prominently.

The console reads:

WARNING: Buffer underrun in real-time audio output

how can I avoid this ?

Many thanks,

Joel



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I think that warning means that the audio buffer is fed with data at a lower speed than the data is being read from it, so the DAC doesn't have all the info it requires to generate the correct output in real-time.

So, you should optimize better your code for real-time output. As a start point, you could try to increase the ksmps value.

Il 2018-08-17 20:14 fauveboy ha scritto:

Theres an error which occurs, however not always and sometimes very
prominently.

The console reads:

WARNING: Buffer underrun in real-time audio output

how can I avoid this ?

Many thanks,

Joel



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On Fri, 17 Aug 2018, Mauro Giubileo wrote:
> I think that warning means that the audio buffer is fed with data at a lower
> speed than the data is being read from it, so the DAC doesn't have all the
> info it requires to generate the correct output in real-time.

First thing I would try would be increasing the buffer sizes with the -b
and -B options.  Quite often your CPU has enough power *overall* to keep
feeding the DAC at full speed, but there are brief peaks during rendering
where it doesn't.  A bigger buffer will give it more time over which to
smooth out those peaks - at the cost of increasing the latency between
input and output (which may be relevant if you're controlling Csound in
real time, but probably isn't a problem for score-driven rendering).

-- 
Matthew Skala
mskala@ansuz.sooke.bc.ca                 People before principles.
http://ansuz.sooke.bc.ca/

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