Noise-cancellation - a typical enough term. We have all heard about it, also it appears like a perfect idea. But how do noise-cancellation headphones actually work? They do not simply block the sound - that's what frequent headphones do. So how do they undertake it?
Everything comes down to sound waves. The headphones have mics that capture the sound waves as they get to your ear, after which electric circuitry creates an "antinoise" transmission. This transmission is an inverted copy of the original sound wave, which in turn travel collectively in your ear. The waves interfere with one another, known as destructive interference, with no sound gets to your ear.
So why bother? It seems a bit excessive, right? Regular headphones do a very good job of obstructing the sound. Even if your environments are loud, you can easily turn your own headphones' volume up, right? Well, indeed, obviously you can. But when you are on an airplane, trying to rest near the roaring engines, and you've a choice between turning up the volume - significantly - and cancelling the noise totally, what will you choose?
Also, if you think about this, you are doing oneself a favor. Every time you turn up your own headphones to cover up the exterior sound, you harm your own ears just a bit more. You know how whenever you walk out of a concert plus your ears are ringing? That's harm to your eardrums. So, instead of turning up the volume, you need to cancel out the background noise, and also save your hearing. Eventually, you'll thank yourself later in life.
Personally, I have no need for noise-cancelling headphones. I am not constantly around noises, like in the city, so regular earphones are usually enough. But then again, I reside in a small town. Perhaps someone in San Francisco, or even New York, or even L . A . will find the occasion to utilize them far more than I might. It all depends upon what you are looking for.
Another alternative is definitely the happy medium - noise-reducing headphones, which usually still stop ample ambient noise. They do not need batteries, are lighter, plus, obviously, are far less expensive, while retaining high quality sound. While the noise-cancelling headphones and the regular headphones have their own niches, the noise-reducing headphones are ideal for any occasion.
Then again, next time I am on an airplane, I believe I will be yearning for the noise-cancelling earphones all the same.
Everything comes down to sound waves. The headphones have mics that capture the sound waves as they get to your ear, after which electric circuitry creates an "antinoise" transmission. This transmission is an inverted copy of the original sound wave, which in turn travel collectively in your ear. The waves interfere with one another, known as destructive interference, with no sound gets to your ear.
So why bother? It seems a bit excessive, right? Regular headphones do a very good job of obstructing the sound. Even if your environments are loud, you can easily turn your own headphones' volume up, right? Well, indeed, obviously you can. But when you are on an airplane, trying to rest near the roaring engines, and you've a choice between turning up the volume - significantly - and cancelling the noise totally, what will you choose?
Also, if you think about this, you are doing oneself a favor. Every time you turn up your own headphones to cover up the exterior sound, you harm your own ears just a bit more. You know how whenever you walk out of a concert plus your ears are ringing? That's harm to your eardrums. So, instead of turning up the volume, you need to cancel out the background noise, and also save your hearing. Eventually, you'll thank yourself later in life.
Personally, I have no need for noise-cancelling headphones. I am not constantly around noises, like in the city, so regular earphones are usually enough. But then again, I reside in a small town. Perhaps someone in San Francisco, or even New York, or even L . A . will find the occasion to utilize them far more than I might. It all depends upon what you are looking for.
Another alternative is definitely the happy medium - noise-reducing headphones, which usually still stop ample ambient noise. They do not need batteries, are lighter, plus, obviously, are far less expensive, while retaining high quality sound. While the noise-cancelling headphones and the regular headphones have their own niches, the noise-reducing headphones are ideal for any occasion.
Then again, next time I am on an airplane, I believe I will be yearning for the noise-cancelling earphones all the same.
Ditulis oleh:
Unknown - Tuesday, October 23, 2012
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