On Mon, Mar 17, 2014 at 10:36 AM, zielalaoui <z.i.elala...@gmail.com> wrote: > Hi all, > I try to create a new block able to generate integer values depending on the > output values giving by the SNR estimator block (already available in > Gnuradio library). Normally the estimator black should give the SNR in dB so > a float value, but in the C++ file the output is defined as double > (complex). Moreover, the program code contains this line: > *double x = abs(input[i+1])* > So, I want to understand why x is double and it is not a float? Any help > will be appreciate. > Thanks
The running averager used internally is pretty sensitive to the precision, so we calculate it internally as double precision. You can cast the result down to a float if you want. Honestly, we could probably get away with using floats here considering how rough any real SNR estimate is, anyways. Tom _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
