Skip to Main content Skip to Navigation
Conference papers

Electroacoustic absorbers based on finite-time control of loudspeakers: a numerical investigation

Abstract : This paper proposes a numerical investigation of a controlled loudspeaker designed to absorb acoustic plane waves at a duct termination. More precisely, a nonlinear control for a current-driven loudspeaker is presented, that relies on (i) measurements of velocity and acoustic pressure at the membrane, (ii) a linear electroacoustic loudspeaker model and (iii) a nonlinear finite-time control method. Numerical tests are carried out by a passive-guaranteed simulation of the loudspeaker dynamics in the port-Hamiltonian systems formalism. The sound absorption efficiency is evaluated up to 300Hz by computing the reflected pressure at the membrane. The results are compared with a similar control architecture: the finite-time control for sound absorption proves effective, especially in the low frequency range.
Complete list of metadatas

Cited literature [11 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-02046069
Contributor : David Roze <>
Submitted on : Thursday, October 29, 2020 - 1:35:42 PM
Last modification on : Saturday, October 31, 2020 - 3:29:35 AM

File

Nodycon19_officialpreprintvers...
Files produced by the author(s)

Identifiers

Collections

Citation

Tristan Lebrun, Marc Wijnand, Thomas Hélie, David Roze, Brigitte d'Andréa-Novel. Electroacoustic absorbers based on finite-time control of loudspeakers: a numerical investigation. International Nonlinear Dynamics Conference, Feb 2019, Rome, Italy. ⟨10.1007/978-3-030-34747-5_3⟩. ⟨hal-02046069v2⟩

Share

Metrics

Files downloads

2