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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