Primitive root sequences provide an alternative periodic well-depth pattern for diffusers.

Evidence

Primitive root sequences well depth = an mod p where p is a prime and a is a suitable constant called a primitive root. For a = 2 and p = 5, we get the sequence 1, 2, 4, 3, 1, 2, … etc. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 2092

Categorization

• XREF: Links psychoacoustic diffuser design to primitive roots in number theory.