Search for dissertations about: "hybrid controller for anc"
Found 4 swedish dissertations containing the words hybrid controller for anc.
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1. Active Noise Control of Enclosed Sound Fields Optimising the Performance
Abstract : Active noise control is the art of reducing a primary unwanted sound field by interference with an actively created secondary sound field. To achieve high reduction, it is crucial to obtain both temporal and spatial matching between the primary and the secondary sound fields. READ MORE
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2. Active Control of Noise in Ventilation Systems : Analysis and Experiments
Abstract : In many kinds of buildings, the ventilation system constitute a well known source of broadband noise. Traditionally, duct born noise is attenuated using passive resistive silencers which produce a high level of attenuation over a broad frequency range. However, they tend to become large and bulky if designed for low frequency attenuation. READ MORE
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3. Active Noise Control in Ventilation Systems : Practical Implementation Aspects
Abstract : In many kinds of buildings, the ventilation is handled by a mechanical ventilation system. Such ventilation systems constitute a well known source of broadband noise. READ MORE
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4. Active Noise Control in Aircraft : Algorithms and Applications
Abstract : The thesis consists of five papers which are divided into three main parts. Parts A and B deal with active noise control in a propeller aircraft application, whereas Part C deals with active noise control in a helicopter application. READ MORE