Acoustics Group at the Department of Electronic Systems
Acoustics - about
The acoustics group studies the generation, propagation and reception of sound waves, as well as transducers and related signal processing, in a wide range of scenarios: sound for the communication between humans (speech and music); the influence of sound (noise) on humans and animals; and technical uses such as for remote sensing, designing materials and devices for noise abatement, biodiversity assessment and underwater communication networks.
The acoustics group offers a specialization in acoustics in the international 2-year master programme Electronic Systems Design as well as the 5-year ELSYS master program. Acoustics courses are also available to students from physics, building engineering, and other 5-year programs.
The fields of application include the energy, building, transport, environment, medicine, ICT sectors and art.
The acoustics group works closely with the SINTEF acoustics group through the Gemini centre "Acoustics Research Centre."
Some current projects in the acoustics group are:
Projects - Acoustics
In this project, which is financed by the Research Council of Norway (Fripro), hybrid methods will combine element-based methods for modeling vibrations with edge-diffraction based methods for representing the air load surrounding the vibrating body. The project runs 2015-2018 in collaboration with CCRMA at Stanford University.
A horn loudspeaker is a special type of acoustic duct which acts as a transformer between a loudspeaker element and the air. The modeling requires accurate methods over a wide frequency range, and this project develops such models, taking the acoustic environment of the loudspeaker into account.
For simulations of various underground storage scenarios of CO2, we are building a 2x4 m tank (1 m high), where we will build models and use ultrasonic sensors to monitor injection of CO2. The plan is to build realistic scaled model (scaling factor is approximately 1000) and use a matrix of several ultrasonic transducers to measure acoustic signals during injection of for instance air or CO2. In this set up the plan is to simulate various leakage scenarios.
This is a 5 years project supported by the Norwegian Research Council and several industry partners. The focus is on geophysical mapping and analysis of how the rocks offshore Norway has been uplifted and eroded. There will also be a strong focus on geophysical monitoring methods, and especially the use of permanent acoustic receiver arrays that are trenched into the seabed. Increased accuracy and predictability based on repeated seismic data is an important challenge. We will develop statistical machine learning techniques, and find ways to realistically constrain spatio-temporal statistical models by measured data as for instance geophysical data or well data. Including elastic wave propagation effects in the seismic imaging and inversion methods is another key topic in the project.
The acoustics group offers the content of a full master programme in acoustics as the " Acoustics " specialization in the international 2-year master programme entitled Electronic Systems Design as well as the 5-year ELSYS master programme. Including the contribution from other departments and faculties at NTNU, the following courses are proposed. Unless otherwise specified, each course counts for 7.5 ECTS.
- Acoustical measurement techniques - TTT4250
- Acoustics of the built environment - TTT4285
- Audio technology - TTT4170
- Building acoustics - TBA4167
- Experts in Teams - Sound in everyday life (in Norwegian) - TTT4850
- Machine Learning and Speech Technology – TTT4185
- Marine acoustics - TTT4175
- Medical Imaging Systems – MEDT4160
- Music acoustics and Technology - TTT4197
- Physics and geophysics - TPG4100
- Speech technology - TTT4185
- Technical acoustics - TTT4180
- Acoustic remote sensing - TTT03 (3.75 ECTS)
- Bioacoustics - TTT20 (3.75 ECTS)
- Environmental acoustics - TTT17 (3.75 ECTS)
- Numerical acoustics - selected topics - TTT12 (3.75 ECTS)
- Marine acoustics - selected topics - TTT19 (3.75 ECTS)
- Room acoustics - TTT22 (3.75 ECTS)
In NTNU’s Music Technology programmes the acoustics group offers or contributes to
- Music and Perception – TT2010- BMUST
- Audio Technology and Room Acoustics – TT3010 - MMUST
- Spatial sound - MCT4044 - MCT”