>
> You almost never want to use a gr_throttle block.  It was primarily
> created to test some GUI code.
>

Ah. I use it with a GUI to take samples I've captured off air to feed them
at the same rate the USRP would (post-decimation).  The idea is the user
gets to save their 'recordings' which they can then 'replay' as though they
were live. Its been quite useful to do that.

I suspect that if you remove the gr_throttle that the code will work
> fine.  In the case of the USRP, you've got the "two clock problem".
> That is, there are two clocks in the system (usrp and audio) and they
> are not synchronized and are running at different rates.
>

I could see how that would lead to occasional aU reports but not the
constant stream I currently have. I shall test with the USRP and see if I
can remove the throttle (although I suspect it could make things a little
rapid).

If you are using portaudio, you might try specifying False for the
> third parameter to the audio_source constructor.  (I'm not sure what
> kind of shape the portaudio source/sink is in.)


Portaudio?! Thankfully not.

Many thanks,

Steve

-- 
The highest human happiness is not the exploitation of the present but the
preparation of the future.
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