Acoustic Technology

The ultimate objective of our research is to develop improved technological solutions for communication within room acoustics, loudspeakers and hearing aids and noise control within transportation noise, vibration control, noise in buildings and the propagation of outdoor noise. Our PhD students carry out a substantial part of our research.

Working in close collaboration with Acoustic Technology, the newly established Centre for Acoustic-Mechanical Micro Systems (CAMM) focuses on precompetitive research within mechanics, acoustics and acoustic-mechanical interaction for objects at the micro-scale. Advanced dynamics and optimization being an important part of the future research. The CAMM centre is partially funded by the three large hearing aid companies; GN Resound, Widex and Oticon and staff members come from both DTU Department of Electrical Engineering and DTU Department of Mechanical Engineering.

Research fields

• Sound Field Analysis and Measurements
  Sound and Vibration is concerned with fundamental aoucstic wave phenomena, including generation, transmission, relection, diffraction, scattering and absorption of sound wave propagation in structures and fluid-structure interaction.
  
• Electroacoustics and Transducer Technology
  Electro acoustics deals with recording and reproduction of sound. The quality of the reproduced sound depends highly on the properties of the microphones and loudspeaker in the signal chain, due to the influence of their frequency response, directivity and nonlinear effects.
• Structure-borne Sound
  Vibration of mechanical systems and waves in solid structures in the audible frequency rang are subjects which form an integral part of engineering acoustics. The study of the phenomena of such vibrations and waves are called structure-borne sound, structural acoustics or vibro-acoustics; the three terms can be considered equivalent and interchangeable. Thus, vibro-acoustic is the study of the mechanical waves in structures and how they interact with and radiate into adjacent media
• Architectural Acoustics
  The tendency in building technology is toward lightweight materials. This presents a challenge for acousticians both because lightweight building structures are prone to have poor sound insulation compared with conventional heavy constructions, and because of the fact that the established, standardised models for predicting transmission of sound in buildings are unreliable for lightweight buildings.

We work in close collaboration with Danish and foreign universities as well as with Danish and foreign companies.