Essays about: "Aktiv Bullerdämpning"

Found 3 essays containing the words Aktiv Bullerdämpning.

  1. 1. A Numerical Approach for Wind Tunnel Noise Control

    University essay from KTH/Marcus Wallenberg Laboratoriet MWL

    Author : Hampus Dall; Robert Palm; [2021]
    Keywords : Technical Acoustics; ANC; Active Noise Control; Superposition; Wind Tunnel; Wingsuit; Indoor Wingsuit; Higher Order Modal Acoustic Field Beyond Plane Wave Region; Numerical Acoustic Simulations; Teknisk Akustik; Aktiv Brusreducering; Superposition; Vindtunnel; Flygning med ekorrdräkt inomhus; Högre ordningens akustisk modanalys bortom planvågsteori; Numeriska akustiska simuleringar;

    Abstract : A wind tunnel from the 1950s located in Bromma, Stockholm, once used for military research is today used for commercial activities. Today the tunnel is used for indoor wingsuit flight and the facility has an interest in reducing the overall noise generated by the tunnel. Acoustic measurements indicate noise problems in the 50 Hz range. READ MORE

  3. 2. Active Noise Control of a Forest Machine Cabin

    University essay from Institutionen för systemteknik

    Author : Mårten Hedborg; Patrik Grylin; [2007]
    Keywords : Active Noise Contol; Aktiv Bullerdämpning;

    Abstract : Today, a high noise level is considered a problem in many working environments. The main reason is that it contributes to stress and fatigue. Traditional methods using passive noise control is only practicable for high frequencies. As a complement to passive noise control, active noise control (ANC) can be used to reduce low frequency noise. READ MORE

  4. 3. Active Noise Control In Truck Cabin

    University essay from Blekinge Tekniska Högskola/Institutionen för telekommunikation och signalbehandling

    Author : Michael Rosendahl; David Scicluna; [2002]
    Keywords : ANC; Active; noise; control; sound; field; measurement; lms; filtered-x; algorithm; truck; coherence; rms; MATLAB;

    Abstract : The thesis is based on examinations of sound fields in a truck cabin. The main technical issue was to investigate how an active noise control system would work in a truck cabin, and also how effective it would be. .. READ MORE