Light passes through a small aperture and leaves a pattern of bright and dark spots on a screen on the other side. Similarly, sound heard passing through a door will have regions of high and low intensity. Doors are frequency filters! a) A 1 [kHz| sound passes through a 1 [m] wide doorway. At which angles respect to the center of the entrance would it vanish on the other side? The speed of sound is 343 [m/s]. b) In general, which frequencies (small or large?) lead to wider diffraction patterns (larger angles between the intensity bands)? These frequencies are \"bent\" more and are heard better through the doorway