The EolAc is an active silencer that reduces low frequency noise generated by ventilation networks in buildings and by suction and/or ventilation systems in industry. The active device is based on the EOLANE process patented by TechnoFirst.
The ActA active silencer is also equipped with traditional passive attenuation devices such as rock wool and an acoustic bulb in order to treat high and medium frequencies as well.
The result of this combination of traditional passive techniques with active noise canceling technology is optimal noise reduction across all audible frequencies (20Hz-20kHz).