If you do that simply by damping wavelengths of speech, you possibly make opportunity to alter the sound of a gun so that it doesn't set the alarm of. Maybe mor

If you do that simply by damping wavelengths of speech, you possibly make opportunity to alter the sound of a gun so that it doesn't set the alarm of. Maybe more importantly the sound of a gunfire would not sound like anything familiar to human ear, so it would make it very difficult to manually pick the real shots.