Signal Source gr_sig_source_x from gnuradio import gr gr.sig_source_$(type.fcn)($samp_rate, $waveform, $freq, $amp, $offset) set_sampling_freq($samp_rate) set_frequency($freq) set_amplitude($amp) set_offset($offset) Output Type type enum Complex complex fcn:c Float float fcn:f Int int fcn:i Short short fcn:s Sample Rate samp_rate samp_rate real Waveform waveform gr.GR_COS_WAVE enum Constant gr.GR_CONST_WAVE Sine gr.GR_SIN_WAVE Cosine gr.GR_COS_WAVE Square gr.GR_SQR_WAVE Triangle gr.GR_TRI_WAVE Saw Tooth gr.GR_SAW_WAVE Frequency freq 1000 real Amplitude amp 1 real Offset offset 0 complex out $type