Noise Cancelling Headphones
The purpose of Noise Cancelling Headphones to to reduce the unwanted ambience sounds, by the use of something called Active Noise Control. To achieve this the manufacturer will use one or more microphones that will be placed near the ear, with electronic circuits that will use the microphone signal to produce an ‘antinoise’ signal. When this antinoise signal is created by the speaker driver within the headphone, ambient noise will be cancelled out by the destructive interface.
Please be aware that noise cancelling headphones and noise isolation headphones are a completely different thing entirely.
A little note on Noise Isolation Headphones. These types are the tight fitting in ear headphones. We review a few of these in our page – Best In Ear Headphones – and can be a lot cheaper than noise cancellation headphones. They range in a variety of prices and can work well if your price range is around the $150 mark. But please note they need to be worn inside your ear canals to cut out the noise instead of the need for electronics.
Noise cancellation is great when wanting to hear your music at a quiet enough sound as to not damage your hearing. Experts have researched that hearing damage may occur when noise levels are as low as 85 decibels. Most MP3 players out there are capable of producing more than 100 decibels. So with noise cancelling you will be able to enjoy your music at low volume, whilst cutting out the chatter around you and also keeping noise pollution at bay.
May I suggest that they are very handy if you need to sleep in noisy vehicles such as a train or an airplane.
To cancel the lower frequency portions of noise by the typical use of ANC. More traditional methods are also used in noise cancellation such as soundproofing, which will keep the higher frequencies at bay. An example of this is the use of Memory Foam, which is not only great for comfort, but great for keeping the outside noises away.
Some of the advantages of ANC are its ability to be more effect when controlling lower frequencies, the product will become less bulky and it can also block noise selectively.
A Little History on Noise Cancelling Headphones
Noise Cancelling headphones go quite far back as well. As far back as the 1950′s there were systems created to help cancel the noise in both helicopter and airplane cockpits. Now there is noise cancellation in airplane headsets that are now commonly available.
There are some factors to be aware of when choosing to buy noise cancelling headphones. They naturally will fuel off power, whether that’s an external set of batteries or a rechargeable internal battery which would be charged through a computer with a USB outlet. No power means they will just act like a normal headset without the ANC or might not even work at all.
Unfortunately some of the headphones, could be the cheaper variations, can include additional noise which may sound like an annoying high frequency hiss. Although please bear in mind this does not occur in all headphones. Look at peoples experiences with them in personal reviews on the Amazon product page. You may find this can only happen with cheaper variations though.
I hope this guide will help when looking at buying bass headphones. Knowing that little bit extra about how your noise cancelling headphones will work – makes all the difference!