Room tone and fill are absolutely essential to achieve smooth sounding dialog that doesn't cut out or suddenly switch perspectives. Interior 1 contains over 100 different curated and custom created room tones that can seamlessly layer in underneath multiple recordings of dialog to make many different takes sound like one clean pass. Each fill has subtle movement and life to it that keeps scenes flowing and doesn't seem "dead". This is how pro dialog editors and mixers achieve cinematic dialog, and Interior 1 gives you the sound set to do the same.