Gesellschaft für Akustikforschung Dresden mbH develops active silencer (ANC) to reduce low frequency noise components in exhaustion section of cogeneration units by up to 25 dB.Read more »
AFD 1400 – AcoustiTube® HighTemp
The test setup for mufflers AFD 1400 – AcoustiTube® HighTemp allows the determination of the acoustic efficiency of silencers and mufflers at temperatures up to 600 °C. Due to its small size compared to typical test setups for mufflers, the measuring device can be installed in a laboratory as well.
The gained measurement data of an evaluated muffler can be applied as input parameters for calculating the spectral transmission loss or the spectral insertion loss of complete systems of silencers and mufflers by means of the analysis software AFD 8001 – AcoustiCalc® as in the case that the measured muffler is integrated to a complete exhaust system.Read more »
AFD 8001 – AcoustiCalc®
The muffler software AFD 8001 – AcoustiCalc® is a powerful tool for the design of single elements and complex systems of silencers and mufflers by determining the insertion loss and transmission loss.
The working principle of the analysis software is based on the analytical description of the specific elements of ducts and mufflers as fourpoles according to linear network theory.
By concatenation of the single elements, the acoustic behavior of arbitrary systems of mufflers can be predicted with respect to defined operational conditions.Read more »
AFD 300 – AcoustiFlow®
The airflow resistivity meter AFD 300 – AcoustiFlow® allows the determination of the airflow resistance of materials with open porosity on the basis of the direct-airflow method described in DIN EN 29053 (ISO 9053).
This technique requires the measurement of the pressure drop across the specimen to be examined as a function of the volume airflow.Read more »
The Gesellschaft für Akustikforschung Dresden mbH acts in the various fields of acoustics and offers its clients an extensive range of services. These include acoustic measurements and the determination of material parameters as well as consultancy in all matters of acoustics and noise reduction more »