Sökning: "equivalent sound level"

Visar resultat 1 - 5 av 13 uppsatser innehållade orden equivalent sound level.

  1. 1. Acoustic Characterization of Catalyst

    Kandidat-uppsats, KTH/Skolan för teknikvetenskap (SCI)

    Författare :Surachit Dokson; [2023]
    Nyckelord :;

    Sammanfattning : The WHO has set a sound level threshold of 55 dB, beyond which noise is considered harmful to humans when exposed for an extended period of time. It is, however, estimated by the European Environmental Agency that over 110 million people in the EU are regularly exposed to levels of traffic noise above 55 dB. LÄS MER

  3. 2. BULLERPROBLEMATIK I BOSTADSOMRÅDE VID NÄRLIGGANDE MOTORVÄG : Södra Källtorp i Västerås

    Uppsats för yrkesexamina på grundnivå, Mälardalens universitet/Akademin för ekonomi, samhälle och teknik

    Författare :Karez Dusky; Dania Ahmed; [2022]
    Nyckelord :equivalent sound level; E18; guide values; health; highway; maximum sound level; noise; Södra Källtorp; WHO; buller; bullerskydd; ekvivalent ljudnivå; E18; hälsa; maximal ljudnivå; motorväg; Södra Källtorp; WHO;

    Sammanfattning : Purpose: This degree project has investigated the problems Södra Källtorp has with noise due to the nearby highway E18. The purpose of this work is to investigate whether Södra Källtorp meets the guideline values and also whether the implemented noise protection measures in the neighbourhood have caused a change regarding the noise level. LÄS MER

  4. 3. Ingjutna ventilationskanalers påverkan på luftljudsisolering i flerbostadshus

    Kandidat-uppsats, Umeå universitet/Institutionen för tillämpad fysik och elektronik

    Författare :Emma Näslund; [2022]
    Nyckelord :;

    Sammanfattning : Good sound insulation is highly valued by Swedish tenants. To be able to achieve that, one must look at many aspects, such as room volumes, floor planes, flooring, but also what materials that are to be built with and how it ́s constructed.  The use of cast-in ventilation ducts in the load-bearing structures is a common method in Sweden. LÄS MER

  5. 4. Mapping Noise Pollution with Open-source GIS

    Master-uppsats, Högskolan i Gävle/Samhällsbyggnad

    Författare :Faustina Lina Yeboah; [2021]
    Nyckelord :Road traffic noise; CNOSSOS-EU; noise exposure; Lday; Levening; Lnight; Lden;

    Sammanfattning : In a time when urban areas continue to expand, environmental noise pollution especially from road traffic remains a big challenge. This study was aimed at using open-source GIS tools to predict road traffic noise pollution using the mid-sized city of Gävle as a case study. LÄS MER

  7. 5. Evaluation of outdoor environment in preschools using the soundscape approach

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Institutionen för byggvetenskaper; Lunds universitet/Teknisk akustik

    Författare :Semir Caban; [2020]
    Nyckelord :Soundscape; statistical analysis; psychoacoustics; outdoor sound environment; sound environment in preschools.; Technology and Engineering;

    Sammanfattning : Exposure to high levels of noise may affect a person’s health and behavior. A lot of education in Swedish preschool occurs outdoor, which makes having good sound environment important for the children and the teachers. LÄS MER