Sökning: "room acoustics"

Visar resultat 1 - 5 av 30 avhandlingar innehållade orden room acoustics.

  1. 1. Virtually hearing, seeing, and being : room acoustics, presence, and audiovisual environments

    Författare :Pontus Larsson; Chalmers University of Technology; []
    Nyckelord :virtual acoustics; cross-modal interaction; auditory-visual interction; virual reality; virtual environments; auralization; presence; auditory presence; room acoustics;

    Sammanfattning : .... LÄS MER

  2. 2. Studies of Edge Diffraction and Scattering: Applications to Room Acoustics and Auralization

    Författare :Rendell Torres; Chalmers University of Technology; []
    Nyckelord :diffraction; virtual environments; scattering; diffusion; architectural acoustics; auralization; virtual reality; room acoustics;

    Sammanfattning : This thesis examines ways of including edge diffraction and surface scattering to improve room acoustics auralization, i.e., the binaural replication of an acoustic environment. The approach combines numerical and psychoacoustical studies to discern what level of computational accuracy is necessary to obtain perceptually adequate replication. LÄS MER

  3. 3. Communication acoustics in classroom environments : on the use of assistive listening devices

    Författare :Johan Odelius; Luleå tekniska universitet; []

    Sammanfattning : Assistive listening devices (ALDs) are used in classrooms to assist communication for students with hearing loss. An ALD, a system of external microphones, transmits sound directly to the students' hearing aids. The signal is coupled to the hearing aid using a radio frequency (FM) or an induction loop (IL) system. LÄS MER

  4. 4. Absorption Characteristics of Periodically Perforated Suspended Ceilings

    Författare :Dag Holmberg; Teknisk akustik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Building construction; Byggnadsteknik; measurement device.; flow resistance; suspended ceilings; periodically perforated facing; resonant absorbers; Room acoustics; building acoustics;

    Sammanfattning : The sound absorption characteristics of resonant absorbers, implemented as perforated suspended inner ceilings attached with thin porous layers, are investigated. Several existing theories model the principal absorption mechanisms, but the interaction with the outer sound field influences the absorption in ways that can be modelled with new approaches. LÄS MER

  5. 5. Transmission loss of vehicle seals

    Författare :Qi Li; Leping Feng; KTH; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; vehicle seals; reverberation room test; contact analysis; simple model; mass law; FEM analysis; distorted circular duct model; Acoustics; Akustik;

    Sammanfattning : Sound transmission loss of vehicle seals was studied in this thesis. Reverberation room test and semi-anechoic chamber test were respectively studied. LÄS MER