Finite boundaries in any wave-reconstruction array introduce edge distortions absent from idealized infinite sources

Evidence

The Huygens-Fresnel Principle assumes that elemental spherical waves are present on an infinitely long boundary. This means that the sharp boundaries, or changes in direction that would be need to form a practical array, can cause problems. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 2241

Categorization

• DEFINE: Names and explains the Huygens-Fresnel Principle’s idealized assumption, a foundational concept worth filing for later reference.
• QUESTION: Worth chasing: how large must an array be before finite-array end effects stop mattering perceptually?