Throttle gr_throttle 1 from gnuradio import gr gr.throttle($type.size*$vlen, $samples_per_second) Type type enum Complex complex size:gr.sizeof_gr_complex Float float size:gr.sizeof_float Int int size:gr.sizeof_int Short short size:gr.sizeof_short Byte byte size:gr.sizeof_char Sample Rate samples_per_second samp_rate real Vec Length vlen 1 int $vlen > 0 in $type $vlen out $type $vlen