3 from gnuradio import gr
4 from gnuradio.qtgui import qtgui
6 class my_top_block(gr.top_block):
8 gr.top_block.__init__(self)
12 win = gr.firdes.window(gr.firdes.WIN_HANN, fftsize, 0)
14 src1 = gr.sig_source_f(1, gr.GR_SIN_WAVE, 0.1, 0.1, 0)
15 src2 = gr.sig_source_f(1, gr.GR_SIN_WAVE, 0.015, 0.1, 0)
17 thr = gr.throttle(gr.sizeof_float, 20*fftsize)
18 self.snk = qtgui.sink_f(fftsize, win, -0.5, 0.5)
20 self.connect(src1, (src,0))
21 self.connect(src2, (src,1))
22 self.connect(src, thr, self.snk)
24 if __name__ == "__main__":