It can be objective and subjective. When observing or hearing an object in motion (objective sound movement), the distance and directionality change provide us enough information to detect the movement. A subjective movement (camera movement, character if subjective point of audition) will provide the same moving spatial references.
- Distance can also be identified in reference to a closer/further sound.
- In enclose spaces, reverberation is added to the signal.
- If the law of good continuation is not respected, the sound movement can be interpreted as another sonic event (unless there is any visual anchoring).
- Can also be interpreted as the projection of a temporal interval orientated into space (A to B)
- Speed of movement will generate the amount of Doppler effect