Re: [Discuss-gnuradio] WAV File Sink problem

[Josh Blum]

Try using the wave sink in a simplified example. Also, if you want the 
app to exit when using a head block, set the run to completion option in 
the options block.

-Josh

On 03/09/2010 10:54 PM, dan s wrote:
> Hi all,
>
> I am having trouble using GNURadio companion and getting the wav file sink to 
> work for me.
>
> I am interested in recording from a USRP with an LFRX daughtercard.  I am 
> simply trying to record from Side A, on the RXA channel.
>
> To do this, I am using the following blocks in order from left to right in my 
> flow graph:
>
> 1. USRP Source
> 2. Complex to Real
> 3. Rational Resampler
> 4. Multiply by constant ((2^ -15)-1) to get values within the +/-1 range for 
> the wav file sink
> 5. Head with 20,000,000 samples
> 6. Wav File Sink (1 channel, 16 bits per sample)
>
> I have checked and all the parameters in each of the blocks are set properly.  
> For simiplicity in the rational resampler, I set the interpolation and 
> decimation to a value of 1.  Also the wav file sample rate matches the USRP 
> source sample rate.
>
>
> The .WAV file is generated however I have to actually manually kill the flow 
> graph.  I can then see that the .WAV file has a size that is exactly what I 
> expect for 20,000,000 samples.  However when I open it with any .WAV editor I 
> have problems saying there is something wrong with the file structure.
>
> Is it possible I am actually writing the header wrong with my method? Does 
> anyone know if my approach is even valid?
>
> Thanks,
> Dan
>
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Description: application/gnuradio-grc