| Have you ever had a problem listening to your | | | | that pass through the air. A sound is constructed from |
| favourite music or the soundtrack of the in-flight movie | | | | equivalent numbers of high and low pressure waves |
| on a long plane journey? The constant background | | | | that travel from where the sound is formed into your |
| noise of the engines can cause difficulty in setting the | | | | ear where the sound is heard. The simple way to |
| volume level on standard headphones to listen | | | | silence a sound is to put a device, such as earplugs or |
| comfortably without being too quiet or too loud. Using | | | | earmuffs that blocks the path of these waves to your |
| noise cancelling headphones gives an amazing solution, | | | | ear. |
| when you put them on, the background roaring and | | | | Noise cancelling headphones have tiny microphones |
| humming noises are reduced to virtually nothing. In | | | | inside the cups of both earphones that monitor what |
| addition, after using these headphones you will feel | | | | you are hearing, including any outside background |
| more refreshed and a lot less fatigued at the end of a | | | | noise. Some electronic processing wizardry takes |
| lengthy flight. | | | | place to create a correction signal, which is the |
| Standard headphones are designed to carry audio. | | | | difference between the required sound and the |
| They don't do very much to fade background | | | | background noise. This signal is fed to the speaker in |
| disruption. The best quality noise cancelling headphones | | | | each earphone. The net result, when combined with |
| are manufactured by the likes of Sennheiser, Bose | | | | the passive noise reduction of the headphones |
| QuietComfort, Sony and Philips. Future articles will | | | | themselves, is a massive reduction in background |
| include some details on specific products along with | | | | noise and a much-improved listening experience. Some |
| some impartial reviews and advice. You won't believe | | | | noise cancelling headphones allow you to switch on |
| how good these headsets are until you try them out, | | | | the noise reduction system without actually listening to |
| so how do noise cancelling headphones actually work? | | | | music, reducing background disruption and making you |
| Sound is formed by a succession of pressure waves | | | | more relaxed! |