hey thanks alot 
.i know the tutorial and already figured out a way to deal with ctrlEnvs for modulating Synthdef parameters in a Pattern context see ctrlEnv merge Event \type but not with these modulating multichannel triggers from Impulse.ar.
hey thanks alot .i know the tutorial and already figured out a way to deal with ctrlEnvs for modulating Synthdef parameters in a Pattern context see ctrlEnv merge Event \type but not with these modulating multichannel triggers from Impulse.ar.