It's true that many action films use sound as a way to make an impact — just think about the symphony of gunshot rounds and explosions included in many action films or the creepy music in horror films — but it's not like cutting dialogue or music is a new technique. Aside from being essential to music (yes, there's a reason rests are included in everything from Vivaldi concertos to Justin Bieber songs), many popular films have opted for more muted sequences to prompt an unexpected emotional response.