Table 1 The parameters of the 7 silencer elements.
From: Broadband noise insulation of windows using coiled-up silencers consisting of coupled tubes
Working frequency (Hz) | a (m) | p (m) | d1 (m) | d2 (m) | w (m) | Quantity |
|---|---|---|---|---|---|---|
130 | 0.245 | 0.175 | 0.060 | 0.015 | 0.005 | 1 |
160 | 0.203 | 0.175 | 0.060 | 0.015 | 0.005 | 1 |
182 | 0.181 | 0.175 | 0.060 | 0.015 | 0.005 | 1 |
255 | 0.135 | 0.175 | 0.060 | 0.015 | 0.005 | 1 |
375 | 0.093 | 0.130 | 0.040 | 0.010 | 0.005 | 1 |
395 | 0.087 | 0.120 | 0.036 | 0.009 | 0.005 | 1 |
475 | 0.074 | 0.104 | 0.030 | 0.007 | 0.005 | 1 |
