Re: [Discuss-gnuradio] audio underrun when bad signal quality

[Markus Heller]

Hi Marcus,

I have been reading from you more frequently on this list than you've
been reading from me :-)

I have my setup in my office computer, so I will send the setup to this
list tomorrow.

Thanks ahead!

vy73
markus
dl8rds

Am Dienstag, den 22.09.2015, 19:56 +0200 schrieb Marcus Müller:
> Hi Markus,
> 
> nice to be hearing from you!
> 
> I'm making assumptions about your RX flow graph here:
> 
> osmocom source --> squelch of some sort --> FM demod/ AM demod of sorts
> --> Audio sink
> 
> If the squelch is set to stop the flow of samples as long as there's not
> enough signal, then downstream, the audio sink doesn't get any samples,
> though it always needs the same amount of samples per second. Hence,
> Underflows.
> 
> Hopefully, that explains the issues you're having; if not, please
> explain your receiver in a little more detail,
> 
> Best regards,
> Marcus
> 
> On 22.09.2015 18:34, Markus Heller wrote:
> > Hi,
> >
> > playing around with my RTLSDR stick (RTL2832U / Rafael Micro R820T
> > tuner) I observed that whenever the reception (signal quality) is bad, I
> > am getting Audio Underruns and glitches in the accoustics. 
> >
> > How can that happen? I always thought the sample rate was constant? When
> > designing the sketch I took good care that the sample rates were fine.
> > Whenever I get good signal quality I have no underruns at all. 
> >
> > Thanks in advance,
> >
> > br
> > markus
> >
> >
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> 
> 
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