Perfect pattern control across the audio range is physically infeasible due to aliasing cost
Evidence
Avoiding spatial aliasing requires a huge number of small loudspeakers, resulting in a prohibitive cost for the array. For example, ideally we want pattern control over the entire audio frequency range. However, even if we make the speaker spacing 4.3 cm, which is unfeasibly small because we would need a large number to achieve low-frequency pattern control, we still have significant aliasing at 10kHz. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 2906
Categorization
Category: Factual Claims
- SHARE: The 4.3 cm spacing figure yielding aliasing even at 10 kHz is a nice concrete number for someone into audio engineering.
- CANDY: Even at an unfeasibly small 4.3 cm driver spacing, arrays still alias at 10 kHz — a compact surprising audio fact.