thanks for the suggestion Patrice. I was trying something with expr~. I find it hard to achieve the same accuracy as bonk~ also, I think that the crackles must be caused by something further downstream in my patch, where the bonk~ objects' bangs get sent to...

2010/4/9 colet.patrice@free.fr

for detecting levels with periodic signals, using [env~] and messaging system seems to make it, like attached example