Trigger_pad
A trigger pad is an electronic sensor on a drum[1] that produces a certain sound assigned from a sound module once the head has been struck. This device allows drummers to play at a constant dynamic regardless of the physical force used.[citation needed]
Triggers are also used to add more definition to drum sounds and prevent bleeding[when defined as?] between sound sources, making it easier to hear clearly every drum hit without rumble or excessive cymbals. An example[according to whom?] is where very rapid bass drum hits become difficult to distinguish or even hear in the presence of a full band.