Sökning: "FxLMS"

Hittade 5 uppsatser innehållade ordet FxLMS.

  1. 1. Active Noise Control with Virtual Reference Signals in an FXLMS Algorithm

    Master-uppsats, KTH/MWL Marcus Wallenberg Laboratoriet

    Författare :Johan Nygren; [2018]
    Nyckelord :road noise; active noise control; FXLMS; virtual reference signals; vagbuller; aktiv bullerbekampning; FXLMS; virtuella referenssignaler;

    Sammanfattning : Noise pollution from road traffic is one of the greatest environmental issues in modern day, and the social cost for road traffic noise was estimated to over 16 billion SEK per year in Sweden in2014. Passive or active control methods can be used to reduce the noise. LÄS MER

  3. 2. Active Noise Control in Forest Machines

    Master-uppsats, Institutionen för fysik

    Författare :Fredrik Forsgren; [2011]
    Nyckelord :Active Noise Control ANC ; Forest machine; Adaptive signal processing; Noise reduction; Adaptive filter; Feedforward; Feedback; Leaky; NLMS; FxLMS;

    Sammanfattning : Achieving a low noise level is of great interest to the forest machine industry. Traditionally this is obtained by using passive noise reduction, i.e. by using materials for sound isolation and sound absorption. LÄS MER

  4. 3. Active Noice Reduction headset

    Uppsats för yrkesexamina på avancerad nivå, KTH/Reglerteknik

    Författare :Henrik Fransson; [2009]
    Nyckelord :;

    Sammanfattning : Conventional (passive) headsets used in propeller aircrafts are reasonably good at attenuating mid to high frequency noise, but fail to achieve good attenuation in the low frequency region (below approximately 300 Hz). Active Noise Reduction (ANR) improves the low frequency attenuation by introducing an anti-noise signal creating destructive interference thus decreasing the residual noise level. LÄS MER

  5. 4. Active Noise Control of a Forest Machine Cabin

    Uppsats för yrkesexamina på grundnivå, Institutionen för systemteknik

    Författare :Mårten Hedborg; Patrik Grylin; [2007]
    Nyckelord :Active Noise Contol; Aktiv Bullerdämpning;

    Sammanfattning : 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. LÄS MER

  7. 5. Implementation of Adaptive Filter Structures on a Fixed Point Signal Processor for Acoustical Noise Reduction

    Magister-uppsats, Blekinge Tekniska Högskola/Avdelningen för signalbehandling

    Författare :Krishna Chaitanya Chunduri; Chalapathi Gutti; [2005]
    Nyckelord :Noise reducation; Adaptive filter structures; Fixed point procesor;

    Sammanfattning : The problem of controlling the noise level in the environment has been the focus of a tremendous amount of research over the years. Active Noise Cancellation (ANC) is one such approach that has been proposed for reduction of steady state noise. LÄS MER