bang from audio signal?

    Nov 07 2006 | 4:34 am
    i am working on a feedback network and trying to get a button to bang when it receives signal in that is not 0, kindof like a switch that outputs to a bang whenever a signal's amplitude goes from 0 to a non-zero.
    i haven't been able to get gate~ or anything like that to work. is such a thing possible?