Firas A. wrote: > > > Important Note: > Beside tunning time depends on the hardware (RF syenthesizer speed), > one should remameber that the time needed to collect 1024 samples > with decimation rate=8 (minimum USRP decimation) is 128 usec > > while : > > Time needed to collect 1024 samples with decimation rate=256 (maximum > USRP decimation) is 4.096 msec > > This means that the tune delay in the case of decimation rate =256 > should be larger than that used for deimation = 8. > >
i have a question regarding the above quote, if we are taking 1024 bin FFT, do we need to have 1024 of signal samples? and i have another question, regarding the FFT block, i try to come out with the equation on what is actually this block (gr_fft_vcc) do in the code, but i cannot trace the whole code (in c++). if we open the c++ code and we can see that the only thing that gr_fft_vcc class do is calling set_window function but no "work" class inside.. so which file/class actually does implement the fft computing? is it in gr_fft__vcc_fftw.cc? i am sorry to ask this question.. hope anyone can help =) thanks.. Adib -- View this message in context: http://old.nabble.com/fft-realated-problems-tp20308034p27169855.html Sent from the GnuRadio mailing list archive at Nabble.com. _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
