Part of this exercise included an illustration of how pitch is perceived from a sound source as it approaches, and then recedes, from a stationary observer. Based on what you observed during the exercise, which of the following is TRUE?
Altering the frequency of the sound emitted had no impact upon the perception of pitch.
The sound was perceived at a lower pitch regardless of speed once it passed the stationary observer.
The sound was perceived at a lower pitch only when the speed reached a high enough level prior to passing the stationary observer
The sound was perceived at a higher pitch regardless of speed once it passed the stationary observer.
