[Discuss-gnuradio] usage of keep_one_in_n in fftsink_nongl

[adib_sairi]

Dear All,
I am exploring the fftsink_nongl.py file because i want to modify it to be
the sensing method of my project. in the fft_sink_c class, there is a signal
processing block call keep_one_in_n. I think that this block is use to
slowing down the sampling of the spectrum sense, am I correct? if i remove
this block from the flow graph, the output value will be unexpected
(unreliable). can any one tell me what is actually happen? what did i need
if i want to remove this block? because this block make my sensing speed
extremely slow.. 

best regards,
Adib
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