On Wed, Oct 23, 2013 at 7:47 AM, Martin Braun (CEL) <martin.br...@kit.edu> wrote: > On Wed, Oct 23, 2013 at 03:23:36AM -0700, Bharat Mukkala wrote: >> the i/o ratio is 1 since the number of input items is same the number of >> output items, but while processing we use the whole signal but not a single >> element while calculating the output elements, i have doubt in figuring out >> how to tell that to gnuradio,my idea is that, can i set_output_multiple to >> ninput_items_required and then do processing. >> thank you > > You can only set_output_multiple before work starts, usually in the > constructor. So you set_output_multiple such that you can process the > entire signal at once, and make your block a gr::sync_block. > > MB
Bharat, Have you looked at the wavelet_ff block in gr-wavelet? It might do what you want already or is at least close. Also, since a wavelet is very much like a decimating fir filter, I'm not sure output_multiple is the right thing to do. I think setting the history for the length of the wavelet coefficients should be adequate. Check out my overview of the scheduler for some details on what history does: http://www.trondeau.com/blog/2013/9/15/explaining-the-gnu-radio-scheduler.html Tom _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
