In English

Active control of light-weight double panel partitions

Oscar Kårekull
Göteborg : Chalmers tekniska högskola, 2004. 65 s. Rapport E - Chalmers tekniska högskola, Avdelningen för teknisk akustik., ISSN 0283-8338; E04-05, 2004.
[Examensarbete på avancerad nivå]

The possible sound insulation improvements of a double partition with the help of active noise control are investigated. The focus is laid on control around the fundamental resonance of a light-weight double panel partition. The behaviour of the partition is investigated by simulations of a modal based mathematical model. The simulation results are validated by measurements of the sound insulation properties, the cavity pressure and the panel vibrations of a plasterboard double wall. Different active control approaches are studied for the application and an adaptive feedforward controller is designed. The wall cavity pressure is chosen as the control measure. The controller is implemented and a maximum sound pressure level reduction of 7 dB is achieved in the recieving room.

Nyckelord: Active noise control, sound insulation, double wall resonance, feedback system

Publikationen registrerades 2006-09-28. Den ändrades senast 2013-04-04

CPL ID: 321

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