Re: [Discuss-gnuradio] OSX audio source issue with higher sample rates

[Alexandru Csete]

On Thu, Apr 7, 2011 at 5:51 AM, update lee <address@hidden> wrote:
> I just picked up a Funcube Dongle, its a USB audio device with a fixed
> sample rate of 96000. Im getting errors though when trying to access it
> using audio source, I set the samp_rate to 96000 but am getting errors
>
> AudioUnitRender
>   Error# -10863 ('AudioUnitRender
>   Error# -10863 ('
>   osx/audio_osx_source.cc:791
>
> Ive noticed that I can use the LineIn upto 44100 (using Audio MIDI Setup)
> then I get the same errors, the FCD has a fixed sample rate so I dont have
> the option of using something smaller. Setting the sample rate in gnuradio
> doesnt seem to set the sample rate of the input as I would have thought, it
> just needs to be set to match whatever the input is currently set to
> already.
>
> I know the device is working fine in OSX as I can use audacity to record a
> sample and save to WAV, then use a WAV source in gnuradio to playback the
> sample without issue.
>
> Im using the latest git master branch of gnuradio. Im using 10.6.7 on my
> macbook.
>

This is happening to me too on OSX 10.6.8 and it seems that this issue
has been around for some time
http://www.mail-archive.com/address@hidden/msg19013.html

The dial_tone.cc example seems to works fine when set to 96kHz.

I'm using gnuradio-core and gr-audio v3.4.0-113-gc491449c built
without macports or any other ports.

Alex