Hi, Eric
I've got a question on the interpolation FIR filter in
the fsk_tx.py. Here is the filter uesd:
interp_taps = gr.firdes.low_pass (self.sw_interp,
# gain
self.fs, # sampling rate
data_rate / 2 * 1.2, # cutoff
data_rate/2 * 0.4, # trans width
gr.firdes.WIN_HANN)
I am a little confused. Why do you use sw_interp as
the gain? And how do you select the cutoff freq. and
transition bandwidth?
Thanks in advance
Sachi
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