Sökning: "microphone"

Visar resultat 1 - 5 av 51 avhandlingar innehållade ordet microphone.

  1. 1. Sound field separation with microphone arrays

    Författare :Elias Zea; Ines Lopez Arteaga; Mats Åbom; Leif Kari; Jean-Hugh Thomas; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Sound field separation; Microphone arrays; Near-field acoustic holography; Reflecting surfaces; Railway rolling noise; Vehicle and Maritime Engineering; Farkostteknik;

    Sammanfattning : Sound field analysis is a fundamental tool in the design, manufacturing, testing and diagnosis of machines and transportation means, as well as the legislations that regulate noise levels in order to minimize environmental pollution. Customary solutions to the problem of sound field analysis are microphone array technologies such as near-field acoustic holography (NAH) and beamforming. LÄS MER

  3. 2. Binaural Rendering of Spherical Microphone Array Signals

    Författare :Hannes Helmholz; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; additive noise; real-time signal processing; binaural rendering; Spherical microphone arrays;

    Sammanfattning : The presentation of extended reality for consumer and professional applications requires major advancements in the capture and reproduction of its auditory component to provide a plausible listening experience. A spatial representation of the acoustic environment needs to be considered to allow for movement within or an interaction with the augmented or virtual reality. LÄS MER

  4. 3. Acoustic Noise and Echo Cancelling : Microphone Array Methods and Applications

    Författare :Mattias Dahl; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : This Licentiate thesis is divided into three parts corresponding to three different papers. There is one research report, one conference paper and one submitted journal paper. All three parts deal with acoustic echo and/or noise cancelling problems when using adaptive microphone arrays. LÄS MER

  5. 4. Sjungande berättare - vissång som estradkonst 1900–1970

    Författare :Marita Rhedin; Göteborgs universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; authenticity; folk music; guitar; lute; microphone; performance practice; poetry; process of change; repertoire; simplicity; singing style; singer-songwriter; song; Sweden; troubadour; visa; voice;

    Sammanfattning : The purpose of this dissertation is to investigate how the song type visa, especially the so-called literary visa, has been presented on Swedish public stages from 1900 to 1970. More specifically it aims to: a) identify characteristic features for the performance of visa; b) ascertain in what ways performance practice has changed during the period; c) analyze and discuss the causes of change; by d) studying the performance of visa in its social and historical context. LÄS MER

  7. 5. Air-coupled microphone measurements of guided waves in concrete plates

    Författare :Henrik Bjurström; Nils Rydén; Björn Birgisson; Tadeusz Stepinski; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Non-destructive testing; Lamb waves; surface waves; air-coupled microphones; non-contact measurements;

    Sammanfattning : Quality control and quality assurance of pavements is today primarily based on core samples. Air void content and pavement thickness are parameters that are evaluated. However, no parameter connected to the stiffness is evaluated. LÄS MER