MHH Hannover Medical School
Healthcare

RF-Shielded Anechoic Acoustic Chamber for Medical Research

Fully anechoic RF-shielded modular acoustic chamber installed in an existing concrete room, combining acoustic isolation and RF shielding.

Project Summary

Create a Fully Anechoic Acoustic Chamber with a Very Low Cutoff Frequency and Loudspeaker Array

The project required a high-performance acoustic and electromagnetic-shielded environment to be integrated into an existing customer concrete room. The solution also required an additional double-door acoustic system with RF shielding to maintain the required high acoustic and shielding performance at the entrance.

Engineered solution

How we solved it

IAC provided a turnkey Microdyne fully anechoic chamber integrated within the existing concrete room. The solution incorporated on-site RF shielding measurements in accordance with EN 50147-1 and a dedicated rotation system for a 19-channel loudspeaker array, enabling controlled acoustic testing within the chamber. A specialised basket-door system was installed to accommodate the anechoic acoustic absorbers, with a cut-off frequency of 50 Hz. A heavy-duty grating floor was also provided to support increased loads while maintaining access to the chamber’s internal systems. The background noise level and free-field performance were also measured and fully complied with the requirements of ISO 3745 for fully anechoic chambers.

Project Results

What the project delivered

Microdyne modular fully anechoic chamber with special RF-shielded Noise-Lock construction

19-channel loudspeaker array with a rotating loudspeaker arc
RF-shielded double acoustic doors
Basket door system for anechoic absorbers
Grating and cable floor
RF shielding effectiveness of 40–60 dB in accordance with EN 50147-1
Shielding frequency range: 10 kHz–10 GHz
Acoustic testing in accordance with ISO 3745 Class 1, covering the frequency range from 50 Hz to 10,000 Hz
Installation within the customer’s existing concrete room