Master's thesis at Efterklang
Efterklang offers support and guidance to students who want to do their research work within acoustics, sound or vibrations. On this page you will find an overview of possible thesis statements. The statements below are merely suggestions and we welcome your own ideas! Please note that even though the thesis statements are in English, the thesis can also be in Swedish or Norwegian.
"Acceleration and retardation of trains – noise levels close to train stations"
Today there are different approaches to calculate noise close to train stations, full speed on all trains or a velocity stair on some or all trains. Little is known about the actual noise when trains speed up or slow down near stations. A study comprising of measuring noise on different distances to a train station from acceleration and retardation of trains to compare with calculations is suggested.
"Acoustic furnishings for preschools"
A cooperation with a suitable furniture manufacturer to design and create sound absorbing furnishings for preschools.
What are the consequence of using outdated sound level calculation methods?
A comparison of Nord2000 and NMT96/RTN96.
"Combined solutions for noise and air quality"
A study of solutions that can be beneficial for air quality and at the same time reduce noise.
"Quantification of perceived sound environments"
Develop a method for objectively assessing sound environments based on different parameters such as sharpness loudness, temporal variation and low frequency content. How can such parameters be used in exploitation planning?
"Weaknesses in traditional noise control measures"
A study of weaknesses in the use of noise barriers. How can traditional noise barriers be improved?
"Local noise control measures – sound zoning in public spaces"
A study of how small scale noise control measures or sound zoning can improve the perceived sound environment within a defined area.
The urban backyard sound environment
How can the sound environment in urban backyards be planned and improved? How can acoustics be included in an early stage of planning?
"How can noise reports be presented to be more understandable?"
Noise, guideline values and application can be difficult to understand and base decisions on. How can reports be more easy to read and understand?
”Finding the optimal shapes for reducing noise with genetic programing”
Genetic programing can be used combined with noise propagation models to find the optimal shapes for noise barriers. These will not be of realistic shape but can be modified with absorption and resonators at the right place to achieve the same effect. Can these methods be applied to find the shapes for low noise barriers, berms, balconies, high rise buildings and roofs?
”Auralization for interactive noise maps”
Noise studies present sound in decibel levels which is hard to relate to. To enhance the perceived noise level, auralization can be performed to synthesize the noise and make it audiable. The scope of the thesis is to apply existing codes of auralization so they can be used in realtime in an interactive way for noise maps of cities. The complexity is to integrate the codes for auralization in GIS so it relates to the environment with roads, railway, airplanes, buildings, terrain and other barriers.