Table 3 Geometrical parameters of the PA-metadifuser.

From: Metadiffusers: Deep-subwavelength sound diffusers

s n

h (mm)

l n (mm)

l c (mm)

w n (mm)

w c (mm)

1

0

−1

8.5

1.8

88.7

8.4

29.0

0

10.0

69.4

10.2

2.4

29.0