What's all of this that we have been hearing about Active Noise Cancelling? It is not new, but more business owners are connecting the dots about the terminology that aligns to the technology already being used every single day in business centers across the globe. Below is excerpt from a simple, informative article written by one of our global directors, Frank Timmermans, and it certainly applies to technology readily available in the South African region. 

"Silence sometimes feels like a warm bath. Spending time alone works wonders for your concentration, productivity and the quality of your conversations. But finding peace and quiet in the hectic environment of a busy open-plan office space seems to be extremely difficult because there’s always some form of background noise. Luckily many headset suppliers have found a solution for this: noise cancelling.

What is noise cancelling?

To start off: by noise we mean external sounds that don't come from the headset. Just think of buzzing appliances at the office, talking colleagues, traffic noise, ringing telephones and noises from incoming app messages and reminders for meetings. Noise cancelling technology is the method for reducing these undesired sounds. There are two forms: active and passive. Passive noise cancelling actually means nothing more than a good seal. You’re probably familiar with the malleable foam earplugs and hearing protection that road workers use. These are examples of passive noise cancelling. Headsets with this function work in the same way, they make sure that the ear is well sealed.

Active noise cancelling (ANC) on the other hand, is much more advanced. It works by adding sound to the sound coming from your headset. Contrary to what you might expect, this ends disturbing background noise.

How does it work?

Sound is vibrating air and it moves in waves. These waves of sound have an amplitude (which determines the volume) and a frequency (which determines the pitch). Think for example of the constant buzzing noise that comes from a plane engine which moves like the blue line.If you run precisely the opposite sound wave (anti-noise – the orange line) through an existing sound wave, you’re left with silence. This physical process is known as destructive interference. And this is exactly what headphones with ANC use. They are fitted with both a microphone that records ambient noise and the technology that ‘turns around’ these sound waves. These reversed waves are then added to the sound that comes out of the speakers in your headphones, and voilà: ambient noise disappears for the user. 

Noise cancelling in the microphone

The ANC technology not only ensures that you can work in your own bubble of silence. The person you’re talking to can also take advantage of it, by implementing the technology in the microphone of a headset. For the best sound, several omni-directional microphones are built into our newest products. Each microphone calculates where the sound of your voice comes from and focuses on that point in space. In this way the headset can already ‘ignore’ a lot of irrelevant background noise. In addition, the headset also lays several digital filters over the sound: one algorithm detects non-stationary sound like speaking colleagues, and another algorithm checks whether there are stationary sounds like buzzing printers or the air-conditioning. All of this combined means that it feels just like you’re alone in the office, wherever you are!

Why is ANC so great in a headset?

Noise in the workplace is not only the biggest enemy of efficiency, it’s also really bad for your health. So it’s no surprise that headsets with noise cancelling functionalities are popular in the workplace. We now have four different ANC products in our portfolio. This is our way of contributing to the whole world’s productivity!" You can view a demonstration https://www.youtube.com/watch?v=EpgOVTtn0eQ 

Noise and managing it in the workplace is a popular topic which we will discuss across the South African region over the coming months. Including technology options within business strategies for helping workers have clear conversations is certainly something to consider, amongst other ideas for adapting to modern work styles. To read more about products available in South Africa which are strong ANC contenders for helping office workers, visit https://www.plantronics.com/za/en/category/office-worker 

About Plantronics

Plantronics is an audio pioneer and a global leader in the communications industry. We create intelligent and adaptive solutions that support our customers’ most important needs: experiencing and facilitating simple and clear communications while enjoying distraction-free environments. Our solutions are used worldwide by consumers and businesses alike and are an optimal choice for open office environments. From unified communications and customer service ecosystems, to data analytics and Bluetooth headsets, Plantronics delivers high-quality communications solutions that our customers count on today, while relentlessly innovating on behalf of their future. For more information or to find authorized distributors in South Africa, visit https://www.plantronics.com/za/