Team

Director: Professor Thomas Fuest
Staff: Walter Salamon

Lab Profile

The Engineering Acoustics Laboratory is where acoustic measurement instrumentation and techniques are practically applied, usually to objects from industrial enterprises. The lab is used for determining the acoustic power of sound sources, noise measurements at workplaces and creating noise maps. It is also used for identifying reverberation periods and noise absorbance. The lab disposes of all requisite measuring instruments for determining sound quantities for room, building and technical acoustics.

The lab also carries out tests in the context of federal noise regulation.

Facilities

• Reverberation room (200 cubic meters) for determining acoustic power and absorbance
• Semi-anechoic room for measuring at very low sound pressure levels and for simulating a free field

Equipment

• Noise analyzer for octave and 1/3 octave sound monitoring (Brüel & Kjaer)
• Norsonic 121 environmental sound analyzer for long-term sound monitoring
• Hand-held sound level meter for octave and 1-3 octave analyses of environmental noise (Brüel & Kjaer 2260 Investigator)
• Fast Fourier transform analyzer for examining acoustic signals
• Several 2230 hand-held sound level meters (Brüel & Kjaer)
• Several 2233 hand-held integrating sound level meters (Brüel & Kjaer)
• Several 2250 hand-held sound level meters (Brüel & Kjaer)
• Various measurement microphones (Brüel & Kjaer, Norsonic)
• Various microphone amplifiers (Brüel & Kjaer)
• Signal generator (Brüel & Kjaer)
• Reference sound source (Brüel & Kjaer)
• Various computer workstations
• Vibration pick-up

Software

• SolidWorks
• Odeon (simulation of room acoustics)
• Operating software for Brüel & Kjaer 2250 and 2260 devices

Standard Experiments

• Determining sound power
• Determining reverberation time
• Determining sound absorption coefficients
• Frequency analysis with FFT
• Determining of environmental parameters

Services

• Site- and person-specific noise measurements in plants and facilities
• Measuring of the noise environment at workplaces
• Measuring of reverberation periods
• Identifying sound sources in machines and facilities and developing corrective actions