Re: [Discuss-gnuradio] unable to support sampling rate 32000 card requested 44100 instead.UaUaUaUaUaUaUaUaU

[Alexandru Csete]

2010/1/22 chandu <address@hidden>:
> When I run following program
>
> gr-utils/src/python/usrp_rx_nogui.py -f 910M -R A -m AM
>
> I got message saying
>
>>>> gr_fir_ccc: using SSE
>>>> gr_fir_fff: using SSE
> audio_alsa_sink[hw:0,0]: unable to support sampling rate 32000
>  card requested 44100 instead.
> aUaUaUaUaUaUaUaUaU
>
> what does this mean? Why it is unable to support sampling rate 32000.

Many cheap audio devices only support 44.1kHz, 48kHz and maybe 96kHz,
and they leave it to the driver to do the resampling. ALSA is not
always able to do that. In such cases you can use the rational
re-sampler block to convert the audio stream to 44.1k, see
examples/audio/test_resampler.py for how it works.

> What does aUaUaUau indicates?

Audio under-run. The audio sink expects data at 44.1kHz but you only have 32kHz

Alex