PLACID Instruments impedance tube (designed and tested in the Netherlands) is used to accurately testing sound absorption and transmission loss without the need of reverberation or anechoic room.
The PLACID PI series Impedance Tubes can accurately measure sound absorption coefficients as well as transmission loss
according to both ISO and ASTM standards.
Easy to use software, highly accurate and high-quality DAQ, 1/4″ microphones and stable software.
3 sizes of impedance tubes (16, 30 and 100 mm) to cover the frequency range of 50 Hz up to 10 kHz.
Download the datasheet.