Experimental Study of Wire Brush Brake Noise on a Personal Car
Experimental Study of Wire Brush Brake Noise on a Personal Car
Experimental Study of Wire Brush Brake Noise on a Personal Car
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Interior <str<strong>on</strong>g>Noise</str<strong>on</strong>g><br />
-Influence Influence <str<strong>on</strong>g>of</str<strong>on</strong>g> Exterior <str<strong>on</strong>g>Noise</str<strong>on</strong>g><br />
40<br />
From measured reducti<strong>on</strong><br />
index estimated<br />
35<br />
c<strong>on</strong>tributi<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> the<br />
exterior airborne noise to 30<br />
interior total noise 25<br />
z dB<br />
L<br />
0.1−1kHz<br />
Normali N zed SPL<br />
20<br />
15<br />
10<br />
TTotal t ll level l1001000 100-1000 HHz<br />
5<br />
Total inside SPL<br />
Outside c<strong>on</strong>tributi<strong>on</strong> to inside SPL<br />
0<br />
1 2 3 4 5 6 7<br />
Roller speed [km/h]<br />
16<br />
B<str<strong>on</strong>g>Brake</str<strong>on</strong>g> k pressure, 5 [b [bar] ]
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