Table 2 Acoustic power level of different modes.

From: On enhancing the noise-reduction performance of the acoustic lined duct utilizing the phase-modulating metasurface

\(\left( {m,n} \right)\)

Acoustic power level (W)

(0,1)

3.65 × 10−10

(1,1)

4.68 × 10−9

(2,1)

1.58 × 10−3

Back to article page