Matériaux poreux acoustiques - SFA
Matériaux poreux acoustiques - SFA
Matériaux poreux acoustiques - SFA
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Introduction Applications R&D Applications Bâtiments Applications Industrielles Discussion<br />
Traitement de 2 parois (2/2)<br />
Simple porosité<br />
Double porosité<br />
Radiated power (dB ref 1e−12 W)<br />
120<br />
115<br />
110<br />
105<br />
100<br />
95<br />
90<br />
85<br />
80<br />
No treatment<br />
side & top<br />
side & side<br />
side & front<br />
Radiated power (dB ref 1e−12 W)<br />
120<br />
115<br />
110<br />
105<br />
100<br />
95<br />
90<br />
85<br />
80<br />
No treatment<br />
side & top<br />
side & side<br />
side & front<br />
75<br />
75<br />
70<br />
0 100 200 300 400 500<br />
Frequency (Hz)<br />
70<br />
0 100 200 300 400 500<br />
Frequency (Hz)<br />
F.-X. Bécot – fxb@matelys.com – http://www.matelys.com Journées d’étude Poreux, 14-15 Mai 2009 : 34