15) in which of the following cases would sound reach each ear out of phase? a. you are standing directly in front of the sound source. b. you are standing directly below the sound source. c. you are standing directly to the right of the sound source. d. you are standing directly behind the sound source. 16) in which of the following cases would sound reach each ear out of phase? a. you are standing directly in front of the sound source. b. you are standing directly below the sound source. c. you are standing directly to the right of the sound source. d. you are standing directly behind the sound source.