On 01/14/2015 11:28 PM, Ralph A. Schmid, dk5ras wrote:
Hi,
How would I change this, skipping PulseAudio and using Alsa? The only audio
application I try with gnuradio at the moment behaves similar here. I try to
decode DMR, and I get choppy audio although everything should be OK. I blamed
gr-dsd, but maybe it is a common issue. Will have to try a simple FM RX to
verify :)
Ralph.
You almost certainly have a sample-rate mismatch somewhere in the flow--likely,
your audio sink is configured for a sample-rate other than what
the hardware (or PulseAudio) can support. Sometimes also, PulseAudio gets into
trouble and gets all under-runny. I'd go with Alsa direct if it
were my problem, and skip Pulse entirely.
One could just try dial_tone.py example. That will exercise the audio
subsystem.
For alsa, in the device field in the audio sink, try something like
hw:0,0 or plughw:0,0
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