3 from gnuradio import gr, blks2
10 freqs = [100, 200, 300, 400, 500]
16 s = gr.sig_source_c(fs, gr.GR_SIN_WAVE, fi, 1)
17 fm = blks2.nbfm_tx (fs, 4*fs, max_dev=10000, tau=75e-6)
21 taps = gr.firdes.low_pass_2(len(freqs), fs, fs/float(nchans)/2, 100, 100)
22 print "Num. Taps = %d (taps per filter = %d)" % (len(taps),
24 #filtbank = blks2.synthesis_filterbank(nchans, taps)
25 filtbank = gr.pfb_synthesis_filterbank_ccf(nchans, taps)
27 head = gr.head(gr.sizeof_gr_complex, N)
28 snk = gr.vector_sink_c()
31 tb.connect(filtbank, head, snk)
33 for i,si in enumerate(sigs):
34 #tb.connect(si, fmtx[i], (filtbank, i))
35 tb.connect(si, (filtbank, i))
41 s1 = f1.add_subplot(1,1,1)
42 s1.plot(snk.data()[1000:])
46 s2 = f2.add_subplot(1,1,1)
47 winfunc = scipy.blackman
48 #winfunc = scipy.hamming
49 s2.psd(snk.data()[10000:], NFFT=fftlen,
52 window = lambda d: d*winfunc(fftlen))
56 if __name__ == "__main__":