On Wed, Apr 19, 2006 at 03:44:27AM -0700, seph 004 wrote: > Hi > > At the moment I would like to see if I can generate a chirp > signal. Looking through what gnuradio blocks are available, I > assumed I could use the gr_fxpt_nco block to do something like > this. I was wondering firstly if it would be possible, and > secondly, how this block works and behaves when it's running. > > Regards > Lance
gr_fxpt_nco doesn't derive from gr_block. It's a low level primitive used within blocks. However, you could generate a chirp by feeding gr.frequency_modulator_fc (basically a VCO) a periodic ramp. You could generate a periodic ramp using gr.vector_source_f(foo, True) where foo was a python sequence that defines the ramp. You could of course also build a new block that derives from gr_sync_block. Eric _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
