Sökning: "Active Noise Control ANC"

Visar resultat 1 - 5 av 13 uppsatser innehållade orden Active Noise Control ANC.

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

   Master-uppsats, KTH/Marcus Wallenberg Laboratoriet MWL

   Författare :Hampus Dall; Robert Palm; [2021]
   Nyckelord :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;

   Sammanfattning : 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. LÄS MER

3. 2. Online Secondary Path Modelling for Spatial Active Noise Control with Arbitrarily Spaced Arrays

   Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Författare :Jesper Brunnström; [2021]
   Nyckelord :Active noise control; Secondary path modelling; Spatial; Adaptive filter; Multichannel; Least mean squares; Aktiv brusreducering; Sekundärvägsmodellering; Spatial; Adaptiv Filtrering; Multikanal; Minsta kvadratmetoden;

   Sammanfattning : In this work we explore online secondary path modelling (SPM) in the context of spatial active noise control (ANC). Specifically, we are interested in the reduction of broadband noise over a three-dimensional region, without restrictions on microphone and loudspeaker array placement. LÄS MER

4. 3. Mediacentral för skogsmaskiner : Ny konstruktion för Komatsu Forest AB

   Uppsats för yrkesexamina på grundnivå, Umeå universitet/Institutionen för tillämpad fysik och elektronik

   Författare :Isak Lindmark; [2017]
   Nyckelord :Media central; Car stereo; Communication; Bluetooth; Malux Voyager; ANC; Active Noise Control; Multiplexer; Audio; Microphones; SNR; Signal to Noise Ratio; Mediacentral; bilstereo; kommunikation; Bluetooth; Malux Voyager; ANC; Aktiv bullerreducering; Multiplexer; Ljud; Mikrofoner; SNB; Signal-brusförhållande;

   Sammanfattning : Komatsu Forrest AB have a demand for a media solution where the user can select between different input sources as well as output channels. The input sources are Radio, Bluetooth, AUX, two microphones and PC. The system shall also be able to mix sound from an ANC unit (Active Noise Control). LÄS MER

5. 4. Extending the capabilities of existing Remote Laboratory for Active Noise Control

   Master-uppsats,

   Författare :Piotr Konopka; Maciej Żmuda; [2017]
   Nyckelord :Active Noise Control; Remote Laboratories; Spatial Positioning; VISIR;

   Sammanfattning : The aim of the thesis is to upgrade an existing Remote Laboratory for Active Noise Control (ANC) and acoustics experiments providing users with a more authentic real life experience. This is done by designing a solution that allows remote position control of microphones inside a ventilation duct for ANC experiments. LÄS MER

7. 5. Performance Evaluation of Different Active Noise Control (ANC) Algorithms for Attenuating Noise in a Duct

   Master-uppsats, Blekinge Tekniska Högskola/Institutionen för tillämpad signalbehandling

   Författare :Muhammad Moazzam; Muhammad Shoaib Rabbani; [2014]
   Nyckelord :Active Noise Control; Adaptive Algorithms; L-LMS; N-LMS; FuLMS; RLS; Master of Science Programme in Electrical Engineering with emphasis on Signal Processing Masterprogram i Elektroteknik med inriktning mot signalbehandling;

   Sammanfattning : Adaptive filter algorithms are extensively use in active control applications and the availability of low cost powerful digital signal processor (DSP) platforms has opened the way for new applications and further research opportunities in e.g. the active control area. LÄS MER