What's the best approach to detecting LF audio (Typically BassDrums). My first idea was to use a ~120Hz Analog BP-filter followed by a comparator of some sort. Is there another less Component-dense way? Regards, Mattias Engstršm -- ------------------------------------------- BassLab Production, Mix, Remix fascility Mail us : basslab@usa.net Call us : +46-(0)708-833331 -------------------------------------------