Name
Title | ||
|---|---|---|
Broadband Low-Frequency Electroacoustic Absorbers Through Hybrid Sensor-/Shunt-Based Impedance Control. |
Abstract | ||
|---|---|---|
This paper proposes a hybrid impedance control architecture for an electroacoustic absorber that combines an improved microphone-based feedforward control with a current-driven electrodynamic loudspeaker system. Feedforward control architecture enables stable control to be achieved, and current driving method discards the effect of the voice coil inductance. A method is given for designing the transfer function to be implemented in the controller, according to a target-specific acoustic impedance and mechanical parameters of the transducer. Numerical simulations present the expected acoustic performance, introducing global performance indicators such as the bandwidth of efficient absorption. Experimental assessments in a waveguide confirmed the accuracy of the model and the efficiency of the hybrid control technique for achieving broadband stable low-frequency electroacoustic absorbers. An application to damping of resonances in a duct is also presented, and the application to the modal equalization in actual listening rooms is finally discussed. |
Year | DOI | Venue |
|---|---|---|
2017 | 10.1109/TCST.2016.2547981 | IEEE Trans. Contr. Sys. Techn. |
Keywords | Field | DocType |
Impedance,Loudspeakers,Acoustics,Absorption,Sensors,Bandwidth,Electrodynamics | Acoustic impedance,Control theory,Electrodynamic loudspeaker,Control engineering,Electronic engineering,Impedance control,Acoustics,Loudspeaker,Damping factor,Mathematics,Microphone,Feed forward | Journal |
Volume | Issue | ISSN |
25 | 1 | 1063-6536 |
Citations | PageRank | References |
0 | 0.34 | 2 |
Authors | ||
3 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Etienne Rivet | 1 | 0 | 0.34 |
| Sami Karkar | 2 | 0 | 0.34 |
| Herve Lissek | 3 | 2 | 2.16 |