Sound & Vibration LAB
Engineering acoustics has extensive resources for sound and vibration research and education. The most important facillities are:
- Sound design studio for sound quality anlysis, listening tests and sound recordings
- Semi-anechoic vehicle laboratorywith chassis-dynamometer for sound and vibration measurement on cars and tyres
- Anechoic room for sound power, directivity and diffusion measurements, listening tests and sound quality tests
- Extensive measurement equipment for recording and analysis of sound and vibration.
- Sonochemistry Lab
Sound Design Lab
The Sound Design Lab is primarily used for sound reproduction, listening tests on audio quality and auralisation. The studio's control room is built according to the principle of live end - dead end, and there is a recording room with adjustable acoustics.
Automotive Lab
The Automotive Lab is a semi-eco-friendly environment designed to mimic a road surface with low-reflection surroundings. The lab measures 10 x 5.8 x 7.3 meters and is used to assess sound power, directional characteristics, and how external noise from tires and surroundings infiltrates a car cabin. Equipped with a chassis dynamometer, the lab conducts sound and vibration measurements on vehicles and tires.
Anechoic Room
In the anechoic room, measurements and listening tests can be carried out without the environment affecting the acoustics. The room maintains an extremely low background level, far below the hearing threshold (-20dB), and is echo-free for frequencies above 80 Hz, ensuring high measurement accuracy even for very faint sounds.
In the room, it is possible to measure and record sound-producing products from various directions simultaneously. Additionally, the room is equipped with high-quality audio equipment that enables authentic reproduction of recorded and simulated sound environments within the audible frequency range, used for listening tests and sound quality projects.
The room is referred to as the "quiet room" and has been the subject of thousands of study visits since its construction in 1976, providing unique experiences.
Sonochemistry Lab
Processacoustics focuses on intensification and energy efficiency through ultrasonic-controlled high-intensity cavitation. The methodology involves multiphysics simulation and experimental optimization of coupled resonance-enhanced systems for applications in pulp and paper, mining and mineral technology, biochemistry, composite materials, food processing, and water purification. Key application areas include:
- Process intensification and energy efficiency through hydrodynamic and acoustic cavitation.
- Optimization of sound and vibration properties concerning complex industrial production.
Equipment for experiments and predictions
- Multichannel measurement system - Brüel&Kjær Pulse LAN-XI (24 input, 6 output)
- Multichannel recording system - Head Acoustics Squadriga II
- Comsol Multiphysics: Acoustics, Structural Dynamics, Flow Mechanichs and Mechatronics
- Binaural recording and reproduction system - HEAD accoustics including 2 artificial heads (HMS III and HMS IV)
- 3D sound intensity probe - Brüel&Kjær
- Handheld sound level meters - Brüel&Kjær 2238, 2270 & RION NA-29
- Handheld sound intensity meter - Brüel&Kjær 2260
- Tapping machine - Nor277
- Impact ball - Nor279
- Omnidirectional loudspeaker - Nor276
- Shakers - LDS V201 and LDS V406
- Uniaxial and triaxial accelerometers
- Microphones
- Acoustic simulation software - LMS Virtual.Lab
- Room acoustic prediction and auralization software - CATT-Acoustic
- Building acoustic planning software - BASTIAN
- Loudspeaker design software - LspCAD
In cooperation with other divisions at Luleå University of Technology we have access to:
- Polytec scanning Laser Doppler Vibrometer
- Volvo XC90 driving simulator
- Motion simulator, Motion Base Maxcue 600 servo electric 6 DOF platform
- FEM software, various types
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