calculate SNR and watch a binary file

[Markus Feldmann]

Rob Mahurin schrieb:
> On Mar 26, 2009, at 3:24 PM, Markus Feldmann wrote:
>> I upload binary files. The first is with a sin signal:
>> http://rapidshare.com/files/213866747/ 
>> usrp_output_64bit_complex_only_sin_signal.dat.html
>>
>> and another one without any test signal, but only noise:
>> http://rapidshare.com/files/213867606/ 
>> usrp_output_64bit_complex_only_noise.dat.html
> 
> 
> These files came from some analog-to-digital converter?  If you look  
> at them with hexdump, there is stuff that looks like data only in the  
> first 200 bytes or so.  The rest of the file looks likes zeros and  
> the occasional 0x80bf.  I wouldn't expect the data read from these  
> files to have a meaningful Fourier transform.
> 
> Cheers,
> Rob
> 
Yes it come from an USRP(Universal Software Definded Radio).
This is a peripheral PC divice connected across USB.
On the PC i have python programs to watch this data.

I forgot to write that this data goes into an graphical FFT-
Element. So i think i still have to do this ?
But how to ?

Regards Markus