sound vs. no sound

When it comes to watching scary movies, sound is so much better to have than not to have. When we watched the shower scene with no sound i had no emotion toward the movie. At the beginging when Marian was just getting in, if i could hear the sound of the music i would start to get scared but i couldnt so it looked like she was happy and just washing up. Having no sound being played didnt help with guessing what was going to be next. When music and noise are in the background the audience can usually tell that a acary part is coming like when Norman came in to kill her with the knife. When the sound was on everyone was on like the edge of there seat but with none, no one even knew that he would be walking in and killing her. If it was the first time i watched the movie and it was with no sound i would have that it was him just walking in the shower to say hi or something. Not to kill her. Sound really makes the movie.