Sound power in a reverberation room

Acoustics

Reverberation chamber at Fraunhofer IBP
© Fraunhofer IBP
View into the reverberation chamber at Fraunhofer IBP.

Precise Sound Power Measurement: Fraunhofer IBP’s Reverberation Room Meets DIN EN ISO 3741 Standards

Sound power is an important parameter for characterizing the noise emissions of machines, devices, and systems, as it quantifies the absolute power of a sound source regardless of its acoustic environment. A common method for determining sound power involves measurements under controlled conditions in the reverberation room, where the sound source operates within a diffuse sound field. The sound power is derived from the sound pressure measurements and corresponds to accuracy class 1. These measurements are carried out in third-octave bands according to DIN EN ISO 3741, covering an extended frequency range from 50 Hz to 10 kHz. Whether ventilation technology, HVAC technology, or other noise sources, the reverberation room facilitates detailed investigations using both direct and comparative methods. Its vibration-damped design and connection to an anechoic chamber provide additional flexibility to simulate a wide range of acoustic scenarios.

Benefit from our scientific expertise and testing methods to acoustically optimize your products. The results of our sound power measurements will help you minimize noise emissions, meet regulatory requirements, and strengthen your market position. Together, we can develop solutions that meet the highest standards of quality and efficiency – giving you a decisive edge for your success.

How can we assist you? Learn more about our range of services or send us an e-mail.

 

Measurement Sound power
Standard DIN EN ISO 3741
Measurement object Machinery and equipment, for example of ventilation and air-conditioning systems, air terminals and other noise sources


Technical data

Floor area 60 m2
Room volume 392 m3
Entrance door (H × W) 1,9 m × 2,4 m


Special features

Connection to a semi-anechoic room Measurement of sound insulation and sound absorption of elements between reverberation and anechoic room
Size of the connecting door (measuring surface) 3,80 m × 2,35 m

 

More information

  • Low vibration doors with high sound reduction
  • Suppressed excitation of structure-borne sound of the walls due to a special basement