Search for dissertations about: "Building acoustics"

Showing result 1 - 5 of 42 swedish dissertations containing the words Building acoustics.

  1. 1. Managing uncertainty in building acoustics comparisons of predictions with the 12354 standards to measurements

    University dissertation from Luleå : Luleå tekniska universitet

    Author : Christian Simmons; [2009]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Technology; Teknikvetenskap; Teknisk akustik; Engineering Acoustics;

    Abstract : The thesis summarizes results of research on the uncertainty of standardized methods applied in the field of building acoustics, with respect to calculations as well as to measurements. Eight published papers are appended to the thesis. READ MORE

  2. 2. Acoustic excitation and transmission of lightweight structures

    University dissertation from Div. Engineering Acoustics, LTH

    Author : Jonas Brunskog; [2002]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; point mobility; Lamb waves; wood.; Building construction; plate excitation; cavities; near-periodicity; nearly periodic; sound insulation; timber; structural acoustics; spatial Fourier transform; resilient device; prediction model; periodic; lightweight; ISO tapping machine; airborne noise; Building acoustics; impact noise; Byggnadsteknik;

    Abstract : In order to increase our knowledge of the sound transmission and radiation processes of lightweight wall and floor structures, theoretical models are needed. Detailed models may form a valuable tool. In lightweight floor structures, impact sound insulation is perhaps the most important property to consider. READ MORE

  3. 3. Absorption Characteristics of Periodically Perforated Suspended Ceilings

    University dissertation from Engineering Acoustics, LTH, Lund University

    Author : Dag Holmberg; [2003]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Building construction; Byggnadsteknik; measurement device.; flow resistance; suspended ceilings; periodically perforated facing; resonant absorbers; Room acoustics; building acoustics;

    Abstract : 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. READ MORE

  4. 4. The use of Textiles in an Acoustic Context

    University dissertation from Engineering Acoustics, LTH, Lund University

    Author : Karl Tillberg; [2012]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; porous absorbers; knitted fabric; woven fabric; helmholtz absorbers; room acoustics; nonwoven material; classroom; acoustic textiles; resonance absorbers; panel absorbers;

    Abstract : Working with textiles in an acoustic context gives enormous possibilities to combine the acoustic function of materials with the visual function (aesthetics). Depending on the material choice and the production techniques, textiles may for instance be flexible, stiff, airtight, have high density or high porosity. READ MORE

  5. 5. Structural-acoustic analysis of wall-to-floor joints in timber-framed housing

    University dissertation from Växjö : School of Technology and Design, Växjö University

    Author : Åsa Bolmsvik; Torbjörn Ekevid; Göran Sandberg; [2009]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TECHNOLOGY Engineering physics Acoustics; TEKNIKVETENSKAP Teknisk fysik Akustik; TECHNOLOGY Civil engineering and architecture Building engineering; TEKNIKVETENSKAP Samhällsbyggnadsteknik och arkitektur Byggnadsteknik; Byggteknik; Civil engineering;

    Abstract : Even though a building meets the regulations with respect to impact sound, structures with wooden frames may receive complaints from the inhabitants due to structure-borne sound in the lower frequencies. In this thesis measuring methods that are more precise than the traditional measuring methods have been used to see if they could give a better knowledge about flanking transmission in the low frequencies in timber-framed structures. READ MORE