Fan Noise Cancelling
We provide specialist solutions for cancelling fan noise and machine sound – mainly for industrial companies and factories but also for large commercial companies. A major benefit of our fan noise cancelling solutions is their exceptionally high noise reduction. Where fan noise is causing nuisance to nearby residents, our industrial noise cancelling techniques usually make the fan so quiet that it cannot be heard at the nearest house. Due to their very high sound reduction our solutions often solve nuisance problems after other companies’ noise control methods have been tried but failed to suppress the annoying noise sufficiently. Another major advantage of our solutions is their large cost savings.
Example: a low frequency drone sound from two industrial dust extraction fans was causing noise nuisance to residents living near a woodworking factory. The fans are located outside the factory and they extract sawdust from the woodworking machines inside the factory and send it to a dust collector. The woodworking company tried installing acoustic enclosures over the two fans. Complaints continued. So the company then installed a very large and very expensive sound barrier around the fans and ducts. Residents continued to complain.
So our company was asked to help. Our noise solution used advanced technology to cancel the fan noise at source. This completely eliminated the fan drone, making it inaudible at the nearest houses and solving the noise nuisance problem. The woodworking company spent £14,000 on the acoustic screen and enclosures. They could have saved all of that if they had asked for our help first. Our industrial fan noise cancelling solution cost £6000, considerably less than the acoustic enclosures and screen that had failed to solve the noise nuisance problem.
This advanced industrial noise cancelling technique has been used on a very wide variety of fans, successfully cancelling the fan drone, hum or whine. The human ear is particularly sensitive to such noise features, and they are a common cause of annoyance. So cancelling the hum / whine noise at source is a very effective way to stop noise nuisance and prevent further complaint.
In many cases, our industrial noise cancelling technique has succeeded in resolving noise nuisance problems where other types of solution have failed. This is because industrial fan hums and drones are usually at a low frequency and common types of solution such as a silencer, enclosure, screen, barrier, etc. provide little sound reduction at low frequencies. By cancelling fan noise at source, our advanced noise solution provides a very high noise reduction even at a low frequency. This technique is so effective that it often eliminates the fan drone / hum completely, making the fan inaudible at the nearest houses to the factory.
For examples where our fan noise cancelling technique has solved industrial noise nuisance problems after other solutions had been tried but failed to provide enough noise reduction, see cancelling fan noise.
Industrial Noise Cancelling
We specialise in providing high performance industrial noise cancelling solutions for fans and machines. Our solutions provide high noise reduction at considerably lower cost than other noise control techniques such as acoustic enclosures. Based on over 40 years’ experience, we have successfully reduced noise on all types of industrial machine and fan. We can help with reducing noise at work to comply with the Control of Noise at Work regulations and also with solving noise nuisance problems affecting residents living near factories and other noisy premises. For more details on cancelling machine noise read on. To find out how we can help you solve a noise problem please call us on 01727 864667 or contact us.
Cancelling Machine Noise
A major benefit of our machine noise cancelling solutions is their large cost savings, which can amount to thousands of pounds. They also avoid access restrictions, making it easy for workers to operate and see the machine. This has made our solutions highly popular for reducing noise at work. Alternatives such as acoustic enclosures cost thousands of pounds more than our solutions and also restrict access and visibility making it more difficult to operate the machine. More details of our machine noise cancelling solutions are given in noise reduction at work.
We are often asked about cancelling machine noise. By this people usually mean active noise cancelling, where a loudspeaker is used to generate sound waves that cancel out the machine noise. Active noise cancelling requires a sound wave to be generated that is equal and opposite to that radiated by the machine. To achieve a reduction in noise, the two opposing sound waves have to coincide exactly in time and space. This is not practicable within a factory, which is a large space with a very complex sound field, where multiple sound waves are transmitted from a number of machines simultaneously.
Active noise cancelling works well in a small enclosed space where it is much easier to align the opposing sound waves precisely. But even then, it is only effective at low frequencies because it is much easier to align the opposing sound waves of low frequency noise. Due to practical constraints, there is usually some misalignment of the sound waves, and even slight misalignment means the higher frequency sound waves don’t cancel each other out fully. So active cancelling machine noise is not practicable in factories. The best alternative option is to reduce the noise at source. The advantages of this option are described in work-place noise control.
You can see all the alternative options in our guide: how to reduce machine noise in the workplace.
How to get our help with machine and fan noise cancelling
To find out how our high performance, low cost noise solutions can help you with cancelling fan noise or machine noise within industrial companies, please contact us as shown below:
For help with a noise problem contact us
or call us on 01727 864667