Sökning: "Acoustic control"

Visar resultat 1 - 5 av 68 uppsatser innehållade orden Acoustic control.

  1. 1. Tyst stad : En studie om god ljudmiljö och blandstad vid planeringen av högljudda kulturaktiviteter

    Master-uppsats, Blekinge Tekniska Högskola/Institutionen för fysisk planering

    Författare :Martin Wallenius Kral; [2023]
    Nyckelord :soundscape; environmental noise; figure-ground; hi-fi; lo-fi; ljud; stadsplanering; planering; fysisk planering; buller; blandstad; kulturaktiviteter;

    Sammanfattning : I Stockholm pratades det om klubbdöden under 2019 eftersom flera högljudda kulturaktiviteter behövt stänga i innerstaden. Den huvudsakliga anledningen var konflikter mellan boende och kulturaktiviteter om bullerstörningar som naturligt uppstår när människor ska bo, verka och leva i en tät blandstadsmiljö. LÄS MER

  3. 2. Behavioral response of reindeer (Rangifer tarandus) to acoustic stimuli

    Master-uppsats, SLU/Dept. of Ecology

    Författare :Johanna Börs; [2023]
    Nyckelord :reindeer; Rangifer tarandus; acoustic stimuli; behavioral response; flight response; induced fear;

    Sammanfattning : Scare systems based on acoustic stimuli have been tested on several ungulates in recent years. The aim has been to investigate whether the method can be useful in situations where the animals must quickly be displaced from a specific site, for example, to prevent wildlife accidents. LÄS MER

  4. 3. Speckle suppression in ultrasound images of heterogeneous materials

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Författare :Simon Johnsson; [2023]
    Nyckelord :Ultrasound; non-destructive testing; wiener filter; signal processing;

    Sammanfattning : Performing non-destructive testing (NDT) on materials is a helpful tool for maintenance and quality control because the materials are not destroyed or disturbed; ultrasound imaging is one type of NDT. Ultrasound imaging of heterogeneous materials contains many echoes from the material itself. LÄS MER

  5. 4. Simulation of low frequency acoustic waves in small rooms : An SBP-SAT approach to solving the time dependent acoustic wave equation in three dimensions

    Kandidat-uppsats,

    Författare :Alva Fährlin; Olle Edgren Schüllerqvist; [2023]
    Nyckelord :room acoustics; numerical methods; SBP; SAT; acoustic wave equation.;

    Sammanfattning : Low frequency acoustic room behaviour can be approximated using numerical methods. Traditionally, music studio control rooms are built with complex geometries, making their eigenmodes difficult to predict mathematically. LÄS MER

  7. 5. Making nets more acoustically visible : Floats as passive mitigation measures to reduce bycatch of harbour porpoise (Phocoena phocoena) in gillnets

    Master-uppsats, SLU/Dept. Of Aquatic Resources

    Författare :Frida Rosshagen; [2023]
    Nyckelord :toothed whales; harbour porpoise; Phocoena phocoena; incidental capture; bycatch; fisheries; fishing gear; ; gillnet; mitigation; reduction; low-cost; passive acoustic reflector; float;

    Sammanfattning : Incidental capture in fishing gear is today affecting at least 112 marine mammal species worldwide and for many smaller toothed whale species (Odontocete), gillnets are considered to be the largest problem. Although some effective mitigation measures exists, these are often context specific and many might be hard to implement due to reasons such as high costs and maintenance. LÄS MER