Active noise control

Tackle noise with anti-phase sound waves

Active Noise Control (ANC), or anti-noise, is an effective way to combat noise produced by machines and equipment. Here at Merford, we deploy ANC technology where it can really make a difference – in situations where low-frequency noise causes a nuisance. Sometimes, it can also help to use ANC in combination with passive noise isolation. We’d be happy to tell you more about this.

Active noise cancellation systems

Active noise cancellation systems can be particularly effective at low frequencies where the wavelength of sound is in the range of meters and other solutions tend to become over-engineered or fail to deliver enough efficiency for noise level reduction.

The advantages are that the speakers and measurement sensors do not obstruct the air pathway of for e.g. HVAC duct or louvres outlets. Active systems can adapt dynamically to changes in noise signal and follow them accordingly providing robust solution for blocking excessive noise.

Tackle noise caused by transformers and compressors with Active Noise Control

Active Noise Control is particularly suitable in situations where monotonous and low-frequency noise is a problem – for example, near transformers, ventilators, compressors and engines. ANC is a good alternative to traditional solutions, such as sound-insulating walls and casing. In some cases, however, it is better to combine ANC with a traditional approach. There is no one-size-fits-all solution; every situation requires a customised approach. We’d be more than happy to assess your situation and help you find the right solution to your noise problem.

Want to know more about Active noise control? View the applications and features!

More information about active noise control

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Luke Chalmers

Engineering Director at Merford UK