Minimization of Enclosed Acoustic Energy Density by means of Active Noise Control Methods: Comparison between Maximum Absorption and Minimum Energy Methods

Tutor / director / evaluatorMöser, Michael
Document typeMaster thesis (pre-Bologna period)
Date2009-06-30
Rights accessOpen Access
Abstract
Active Noise Control (ANC) is a buzzword in acoustics today. Applied
correctly, ANC methods have proved to be better insulators in low frequency
noise, than usual absorbers. However, when a broad band noise needs to be
controlled, such active methods have di±culties at high frequencies.
The main objective of this master thesis is to minimize Acoustic Energy
Density (AED) of a broad band signal by means of an active control method.
A comparison between such method and an absorption one is done, so as to
determine which has better broad band behavior. Furthermore, experimental
results are compared with theoretical simulations.
Description
Projecte fet en col.laboració amb la Technischen Universitat Berlin
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