The theoretical analysis and simulation of acoustic absorber for nonlinear shunted loudspeaker
2021 ◽
Vol 263
(6)
◽
pp. 388-393
Keyword(s):
In this paper, a nonlinear electroacoustic absorber based on a tunable loudspeaker is proposed to broaden its sound absorption bandwidth. The main mechanism is a nonlinear circuit is coupled at loudspeaker's terminal. A series of theoretical analysis and simulation work are carried out in this paper. The equivalent model is composed of a linear term describing the loudspeaker and a nonlinear term of a coupled Duffing-van Der Pol bistable circuit. The invariant manifold method is used to solve different time scales. The analysis and simulation results show that the nonlinear circuit can widen the frequency bandwidth of the structure.
2009 ◽
Vol 2009
◽
pp. 1-5
◽
2021 ◽
Vol 263
(6)
◽
pp. 548-555
2014 ◽
Vol 536-537
◽
pp. 1527-1531
2005 ◽
Vol 345
(1-3)
◽
pp. 69-87
◽
Keyword(s):
2015 ◽
Vol 9
(5)
◽
pp. JAMDSM0065-JAMDSM0065
◽