If you look in stores or online you'll see that there are many different brands of headsets on the market. There are the models that cover your ear completely. There are the models that you may have seen that fit inside of the ear canal. These are available in many styles and models. Then there are Blu-Tooth and wireless models. These are for people who need the use of their hands and that need to move around while they are talking on the phone. This way they aren't restricted by a cord. You can also hear the sounds around you in this way. This will also prevent uncomfortable things to happen, like your hair getting tangled, or your earrings getting caught in these.
The latest in headsets are noise canceling models like the Bose QuietComfort 15. They are able to block out both background noise, as well as ambient noise. They can cancel out everyday sounds, such as the dog in your yard, or a plane flying over your house. They are also good for canceling out the noises inside of your house. For example, if you work from home, you need to cancel out the noises of your kids playing in the background, or your dog that won't stop barking. With noise canceling headsets, no one will know that you have chaos in the background. It will sound just as peaceful as can be.
Noise canceling headphones are available in two different capacities which are either passive or active. Bose QuietComfort 15 is from the active to give you an idea just in case you wan to look it up. All kinds of headphones have some form of natural passive cancellation for noises. The cushions that are built into the headbands that fit over your head can effectively block noise to some point. Generally this type of noise is at a higher frequency. Real noise canceling headphones are circum-aural, which means that they are specifically made to filter the most noise possible. Simply put, they are constructed with foam like materials that really absorb sound. Also, this means that they aren't as lightweight as other headphones. The negative aspect of passive designed headphones is that not only are they heavier than others, but they also have the capacity to decrease decibel amounts only to the range of 15-20. Traffic noises and other loud noises such as airplanes still continue to be in the high decibel range of 75-80.
With active noise canceling technologies, these headphones not only do everything that passive models do, but something else as well. They produce their own sound waves that mimic the background noise, but 180 degrees out of phase with the ambient sounds, effectively erasing all intruding sound waves, including those at lower frequencies. This is also known as destructive interference. If you need more technical information on how this works there are an abundance of websites to explain it.
What most people are more concerned with is that it does work, and work well. There are an abundance of different brands of noise canceling headphones on the market, such as Bose QuietComfort 15. some headphones on the market cost hundreds of dollars and whereas other are in the price range where some people if not most could afford. Many people don't want to spend that kind of money on a pair of headphones, no matter how well they work. This is why you really have to do some research and shop around for the best prices and selection. Online at several of the headphone review sites is a good place to start.
No comments:
Post a Comment