Do you need absolute silence in order to concentrate on your work or studies, or even to relax when watching an episode of one of your favourite series while travelling? If so, then what you need are noise-cancelling headphones. Although it may seem a contradiction, these are in fact the answer to your quest for silence.
There are two types of noise cancelling: passive noise cancelling, also known as acoustic insulation, and active noise cancelling, which lets you enjoy the best sound quality while isolating you from outside noise.
So how does this system work to block out the noise and let you enjoy some much-needed silence?
How noise-cancelling systems in headphones work
Outside noise can be eliminated following the wave interference theory. Sound is a wave that complies with the principle of superposition. This principle is that when two waves meet at a point or in a region of space, the result is a new wave resulting from the sum of the two original waves.
In the case of active noise cancelling, an artificial inverse wave is created which, when added to the wave produced by the external sound, cancels out all or part of the external sound wave, especially in low frequencies. This effect is known as destructive wave interference.
The process is carried out using microphones and an audio processor in devices fitted with this technology (ANC), capturing, processing and cancelling out the outside noise so it is not perceived by the human ear.
Most devices with active noise-cancelling technology include a function to disable it when not required, thus saving battery power.
Energy Sistem active noise-cancelling headphones
Energy Sistem offers several devices with this active noise-cancelling technology. These models are tailored to each user's preferences, ensuring comfort, quality, and design in equal parts.
Black
BT Travel 6 ANC headphones are ideal to take with you on your travels, reducing outside noise all around you in order to enjoy pure sound. They also have protein leather pads with memory foam for all the comfort you need. Their classic finish will ensure these headphones match your outfit at all times. These headphones can be folded away in their case for safe transport.
Moon True Wireless Travel 6 ANC earphones will submerge you in your music, letting you cancel out everything else around you. This model also comes with Transparency Mode, which captures outside sounds while wearing the earphones; a very useful feature, especially in crowded urban environments, letting you keep in touch with your surroundings while listening to music.
Recommendations to use audio devices with ANC technology
This system brings only benefits for audio devices fitted with this technology.
Noise-cancelling headphones will be very useful mainly for low-frequency waves, greatly reducing noise from trains, planes and car engines, among others.
This function does not need to be activated if your study or work environment is quiet and does not prevent you from listening to your favourite content, as in such cases not only will it not have any effect, but the battery will also last longer and the headphones will work in optimal conditions.
These reasons and much more make noise-cancelling headphones a great buy, and will make you never want any others without this technology.