Table 1 Geometrical parameters of the QR-metadiffuser.

From: Metadiffusers: Deep-subwavelength sound diffusers

n

s n

h (mm)

l n (mm)

l c (mm)

w n (mm)

w c (mm)

1

1.0

14.7

13.0

16.4

6.2

9.0

2

4.0

30.9

9.1

4.3

3.5

9.0

3

4.0

30.9

9.1

4.3

3.5

9.0

4

1.0

15.7

13.3

17.0

6.3

9.0

5

0.0

20.3

18.0

20.7

3.2

9.0