m-sequences offer flat Fourier properties suited to diffusion design

Evidence

There are also mathematically based procedures for the optimum placement of absorbing materials to encourage diffusion; for more details on this, see Angus (1995). What is required is an amplitude weighting, that is, a pattern of absorbers, which gives a flat Fourier transform. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 2102 (#corroborates, via linked claim)

Categorization

• XREF: connects to: Modern acoustic diffusion uses mathematically structured well patterns — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 2072; Complex real-world sounds can be analyzed via Fourier analysis — David Howard, Jamie Angus, coustics and Psychoacoustics, 436; Quadratic residue sequences generate diffusor well depths using modular arithmetic (+5 more)

Broader Connections

• Optimal absorber placement requires flat-Fourier-transform weighting #corroborates (0.90) — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 2102
• Hemi-cylinder diffusers lose low-frequency diffusion when placed contiguously rather than randomly spaced #expands (0.75)