  There are many methods proposed for the detection of impulsive sounds in
literature. Most of them are complex and require adaptation to ambient noise.
In this paper we propose a very simple and efficient method to detect impulsive
sounds. Although we use energy like most of the others to determine impulsive
sounds, the way we calculate the energy is quite different. Also our
calculation is immune to ambient noise and does not require any limit or
adaptation. We could detect impulsive sounds embedded in various kinds of
noises by using this formula.
  As our ultimate aim is to detect gunshots, next phase of impulsive sound
detection is gunshot recognition phase. Detected impulsive sounds are fed into
recognition phase in which we can decide on gunshots with high success rate.
