Low frequency noise remains one of the hardest unsolved problems in real-world acoustics. It propagates far, penetrates structures, and crucially travels through ducts as an efficient waveguide, spreading noise across a building and even outdoors through exhaust and air discharge points.
No one has solved low-frequency noise yet. Passive silencers (foam, mineral wool) are large, hard to integrate, and often trade performance for pressure drop. Reactive silencers use internal geometry—chambers, baffles, and tubes—to reflect sound waves back but they require fine tuning and customization. Active noise control was promising but mainly failed.
Vibiscus brings active absorption into an industrial product logic: compact, repeatable, easy to integrate, and built for real world HVAC deployment.
A customized acoustic assessment conducted by our experts to thoroughly analyze your noise-related issues. After an initial consultation to define the scope of the project, we conduct an in-depth study and provide you with a clear report containing concrete, tailored recommendations.
SilentFlow is an adaptative noise absorber engineered to target low to medium frequencies inside ducts.
Our product ensures air circulation while minimizing pressure losses.
Our product is able to process frequencies below 300Hz.
Our product is compatible with all types of HVAC ducts, rectangular or circular, with diameters from 80 to 315 mm.
Our product reduces noise by up to -40dB.
