I tried to build a frequencies analyser with 4 [bp~], and test the volume out. WHen I try with a simple [osc~ 440], the result is not enough nice. see it, a patch and an abstraction : http://impala.utopia.free.fr/pd/patchs/frequencies_analyser.zip Is there an another way to split frequence in 4 or 5 regions ? thanks. jr http://impala-utopia.org