Forum: GNU Radio aU on FM

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Inderaj B. (Guest)
on 2008-11-02 01:40
(Received via mailing list)
I am getting the following: It seems that my sound card wants higher
sampling rate
From previous post it seems that should not be an issue.
But the sound from my FM is broken.
Is there a way to fix it?

[root@localhost gnuradio-3.1.3]#
/usr/local/share/gnuradio/examples/usrp/usrp_wfm_rcvi.py
Using RX d'board B: TV Rx Rev 3
audio_alsa_sink[hw:0,0]: unable to support sampling rate 32000
  card requested 48000 instead.
>>> gr_fir_ccf: using SSE
>>> gr_fir_fff: using SSE
gr_vmcircbuf_createfilemapping: createfilemapping is not available
aUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaU

--
~Inderaj
Paul Miller (Guest)
on 2008-11-02 07:47
(Received via mailing list)
On Sat, Nov 1, 2008 at 7:39 PM, Inderaj B. 
<removed_email_address@domain.invalid> wrote:
> aUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaU

Also, what is this?  I see it on some apps and not others.  It appears
to be a feature of python's raw_input() except that it only happens
while the alsa audio stuff is loaded.  I couldn't figure it out and
imagined it was peculiar to my platform.

--
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107 jumps, 43.5 minutes of freefall, 83.4 freefall miles.
Dimitris S. (Guest)
on 2008-11-02 19:43
(Received via mailing list)
please read
http://gnuradio.org/trac/wiki/UsrpFAQ/Gen#OUuainoutput

aU means "audio underrun", which means the soundcard was waiting for
data and did not receive any..

concerning the sampling rate and usrp_wfm_rcv.py, try running it with
the -O plughw:0,0 option... tell me if this fixed it...


Dimitris S.
"If you think you're too small to make a difference, try sleeping with
a mosquito!" - Amnesty International
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