In the area of the underground strations the sound technical output of the absorber in the track area should be investigated metrologically. Therefore in a chosen station the time of reverberation and the sound immissions of the underground mountings were inspected.
The night measurements were carried out at installed absorbers during the basis inspection and at dissembled absorbers in a further investigation afterwards. For the inspection of the immission in the operating-free time tests with test trains were made, where defined velocities were measured. The results were counterparted and should check the mode of operation and the necessity of the sound absorbers.
Client: Wiener Linien