[Discuss-gnuradio] GNURadio and Sampling Theory: simple question

[Saulo Queiroz]

Hi all,

I played a bit with the example "E2.3. A Note on Resampling" provided in the GNURadio tutorial [1].

My question is about the changes in the signal's amplitude value after it is interpolated.  For a interp. factors of 16 and 32, for instance, I observed gains of about 1 dB and 5 dB, respectively, in comparison to the "normal" signal.

Could someone share some thoughts about this? Is this consistent with theory?

Thanks in advance.

[1] https://wiki.gnuradio.org/index.php/Guided_Tutorial_Extras_Sample_Rates

--

Saulo Jorge bq
- "Beware of bugs in the above code; I have only proved it correct, not tried it." 

Donald Knuth.