On Fri, Feb 26, 2010 at 02:26:53PM -0800, Affan Syed wrote: > Hi all, > I have been building a simple block that can detect energy at a > particular frequency, i.e. a tone detection block. The signal > processing seemed simple enough for me, so I directly coded it. > Essentially my tone_sink takes in float point samples of the input > signal (passed through a narrow bandpass filter), squares them and > keeps a short term and long term average (I use an EWMA with > different alpha's). I then generate a message if the short term avg > is becomes much greater than the long term average. here is the .cc > code
Assuming that you've subclassed gr_sync_block, you shouldn't be calling consume_each. FWIW, you may want to look at the Goertzel algorithm for computing power at a single frequency. Eric _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
