Shifting a source spatially adds a progressive phase change to its polar pattern

Evidence

  1. The Shift Theorem: A shift in the spatial domain leads to a linear (progressive) phase change in the transformed polar pattern domain and vice versa. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 2880

Categorization

  • DEFINE: Explains the shift theorem as a concrete cause-and-effect: repositioning elements alters only phase, not magnitude shape.