Essays about: "Acoustic Beamforming"

Showing result 1 - 5 of 12 essays containing the words Acoustic Beamforming.

  1. 1. Simulating flow-noise for after-treatment systems

    University essay from KTH/Teknisk mekanik

    Author : Adam Sandström; [2020]
    Keywords : Flow-noise; CAA; DES; non-refelctive boundary conditions; stretched grid; Menter SST;

    Abstract : Modern silencers for heavy vehicle applications are designed to cancel out the sound generated by the effects of combustion and propagation of exhaust gases through the engine after-treatment system. The complex geometry within the compact silencer give rise to self generated (or flow-) noise that contribute to the total sound power radiated at the exhaust outlet. READ MORE

  3. 2. Beamforming and Blind Signal Separation for Far-field Voice Capture using a Microphone Array

    University essay from Lunds universitet/Institutionen för elektro- och informationsteknik

    Author : Luke Postema; Johan Davidsson; [2019]
    Keywords : Beamforming; Microphone array; Minimum variance distortionless response; delay-and-sum; direction of arrival; blind signal separation; Technology and Engineering;

    Abstract : With the evolving technology of mobile electronics and other forms of communication methods, an increasing demand of speech intelligibility is introduced. In a conference room for example, multiple microphones are placed directly in front of the speaker in order to pick up clean speech. However, several challenges still exist. READ MORE

  4. 3. Low Complexity Beamformer structures for application in Hearing Aids

    University essay from Blekinge Tekniska Högskola/Institutionen för tillämpad signalbehandling

    Author : Eleni Koutrouli; [2018]
    Keywords : hearing aids; beamformers; MVDR algorithm; microphone arrays;

    Abstract : Background noise is particularly damaging to speech intelligibility for people with hearing loss. The problem of reducing noise in hearing aids is one of great importance and great difficulty. Over the years, many solutions and different algorithms have been implemented in order to provide the optimal solution to the problem. READ MORE

  5. 4. Array Element Localisation

    University essay from Lunds universitet/Matematisk statistik

    Author : Axel Sundberg; Olle Bristedt; [2017]
    Keywords : Mathematics and Statistics;

    Abstract : Abstract—This article have been written in cooperation with The Swedish Defense Research Agency (FOI). The article proposes a method to calibrate hydrophone positions for improved underwater survailence in The Baltic Sea. READ MORE

  6. 5. Identification and modelling of noise sources on a realisticnose landing gear using phased array methods applied tocomputational data

    University essay from KTH/MWL Marcus Wallenberg Laboratoriet

    Author : Hamza Bouchouireb; [2017]
    Keywords : ;

    Abstract : Due to the recent development of quieter turbofan engines, airframe noise has started to emerge asthe most important noise source. This is particularly true during the approach/landing phase, whenthe engines are operated at low-thrust levels. READ MORE