I have tried the simplest possible flow-graph. A
sine-source->Throttle->Audio-sink. But I get about 1 Hz drop outs and
message pane keeps writing aU.
Using top the process seems to laod the system less than 2 % and the
load on both processor kernels is well below 20 %. The samling rate is
It does not seem to
be possible to lover the sampling rate due to limitations of my sound
(which probably sucks anyway). I am using Fedora 16 on an AMD 64-bit
So is this really a processor capacity issue. I have sort of hard to
believe that the the processor wont be able to compute 48000 sines per
second and feed it to the sound card but there are of course a lot of
layers in between. Any way rtl_fm seem to be able to feed data to aplay
from a RTL2832U DVB-T recieiver without any problems so my machine is
Isn’t there anything I can do to improve the real-time performance of
Some kind of buffer to add to the flow-graph or something that is
to tune in the operating system?