There is a rest detection example in the Pd-help patches which you may want to look at (depending on what exactly is it you're trying to achieve).
On Tue, 10 Jun 2014 09:39:27 +0200, IOhannes m zmoelnig via Pd-list wrote > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA256 > > On 2014-06-10 08:30, Roman Haefeli via Pd-list wrote: > > On Mon, 2014-06-09 at 19:53 -0700, Ronni Montoya via Pd-list > > wrote: > >> Hi, im tracking the amplitude of my signal with ~env and i need > >> to send one trigger when my ~env gives 0 , the problem is that if > >> i do: > >> > >> ~env | select 0 > >> > >> > >> It send a lot of triggers when my ~env is in 0 and i need to send > >> just one trigger. > >> > >> any idea how can i send only one trigger ? > > > > There is [change] which only lets changing values pass. Something > > like this should work: > > > > [env~ ] | [change] | [select 0] > > though in practice you might want to add some additional filtering > before [change]. > [env~] will give you loads of slightly different values, even when > you feed it a rather "constant" signal like a sine: > e.g.: [osc~ 440] | [env~] | [change] | [print] > > i'd suggest doing something like > > | > [env~] > | > [> 30] > | > [change] > | > > which will give you 0 or 1, instead of the amplitude. > > fgmasdr > IOhannes > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1 > Comment: Using GnuPG with Icedove - http://www.enigmail.net/ > > iQIcBAEBCAAGBQJTlrYsAAoJELZQGcR/ejb4BVEP/32h/CAkkwAplVHyokQcbopP > 2tMtp9fQBlI0byhnCNNmCb6QE/XsZS7//pGWKNeLrBewlRnH/KTaqbvIP3G6UZmQ > m0Ic2gVtRMYmsSIrf6VKmG2TOnZ1miqXUAVE93wlUDwA2vRWvA3vSUsgGavPGvsF > xz33FQNPpLzIKqb7WMPPfQGvmDy3KedhSbpgreNJ3utRmGTICSZTkCfsbRngyAgt > ATy7Yml5jzC5Nj6BoTsUouzMzEgW+BantndFK6KCMM3vxIb1mnDNqwchqUBx8Z/m > FOS7nygugCl0tsNlpicdWsKEpxWknLHdKyLCDgONv1/A2Iwa1EOUK8i720sOEUyX > oiC8Dh1vGnGHhwnEEKeOEzDJGprqp/1S0nRvpfnzc1Zvzfkf5Jlydo8jUa+F1z3h > 0YbQ+KL0QuCiAZfoDV6ZM7E7GJj+DA349mshFPHtToB/6Y9bD7m39tjiTIxdc+hU > KPsWQ8ri10JkvRP8EOyG7u1Mjdlf5qQ5T6U4+XJTkyDNC/k3t/COKxIcH2uYLtXC > MThnhr88sEbes2Og523RhhROUtvJnl+QuHam5Lt1XDSFkNcMStfcC/TjfbsUKwVr > Zm/lG4Jfnwu+XCXW7Iv5DD3bFdO4xqr10Q6d/7GTa8shx1uU52R0+zTme8hI0FL7 > fMw0hXMIz8aN76hKwkbB > =okfr > -----END PGP SIGNATURE----- > > _______________________________________________ > Pd-list@lists.iem.at mailing list > UNSUBSCRIBE and account-management -> > http://lists.puredata.info/listinfo/pd-list ___________________________________________________ Oded Ben-Tal http://ccrma.stanford.edu/~oded o...@ccrma.stanford.edu _______________________________________________ Pd-list@lists.iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list