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Home / News > Noise-free headphones really like advertising that is so magical?


Noise-free headphones really like advertising that is so magical?

Just a few years time, noise reduction headset advertising on the overwhelming, even crowds of sites are also full of noise-free headset ads, it seems no longer buy a noise-canceling headset on the friends do not have a good friend. In fact, the noise reduction headset is not so mysterious, its role is to reduce the noise outside the headphones as much as possible into our ears. So active noise reduction headphones How to produce noise reduction effect? ??In fact, it is not complicated, first through the microphone on the headset to collect the low frequency of the environment noise, and then through the built-in calculator Beats By Dre Cheap to quickly generate a replay with the sound at the same time playback, Can produce a magic effect to offset the environmental noise. Active noise reduction aspects of the research articles, the English abbreviation ANC, full name is Active Noise Cancellation, interested in IEEE or Google academic search, ANC field is too wide, there are Source noise reduction headphones are just one of the typical applications. The principle of active noise reduction headphones

Then the active noise reduction headphones are generally what technology? Technology is too much, this is also a cross-disciplinary areas. Active noise reduction headphones still follow the classification of traditional audio, there are analog and digital points, the current analog mixed But also the majority, so the traditional sound technology must be needed.In addition, the core of active noise reduction headset is a complex algorithm, according to its structural design is generally divided into feedforward and feedback, the specific algorithm details here no longer Explained that each algorithm also have their own advantages and disadvantages, the current commonly used or feedforward and feedback fusion algorithm.

From the above analysis, the active noise reduction headphones can really play a very good noise reduction effect, but this world is not perfect technology, active noise reduction technology must also have limitations and shortcomings. In this article, this article confirms the noise reduction effect of the active noise-canceling headphones, but this article argues that the active noise-canceling headphones can not shield the human voice or the high-frequency noise because of the legal requirements Hear the outside noise. In fact, the original noise reduction headphones from the technical simply can not do, and this is not a simple technical upgrade (the author again in the online search a bit and found that many evaluation articles also say that, and Especially the high-frequency noise, which is the reason why the active noise reduction technology can offset the noise is very limited, only limited to some low-frequency steady-state noise, which is a number of active noise reduction headphones are stressed the reasons for the application of the aircraft, because the aircraft On the noise is indeed quite special, the most suitable for the characteristics of active noise reduction technology.But if replaced by subway, bus and other scenes, in fact, the noise reduction effect is not so significant on the plane, And for the general daily life scenes of active noise reduction headset is almost beats solo no big effect.Therefore, if not travel frequently travel business users, but just want to hear high-quality music, select the active noise reduction headset is not Appropriate.

Once again stressed that the active noise reduction headset is the need to adapt to the application of the scene, not advertising as any scene is magical effect, in fact, it simply can not offset most of the noise in the scene of life.If it is not long-term travel by plane business Users, the purchase really need to be careful.Also also stressed that the active noise reduction technology simply reduce the number of decibels do not make much sense, especially in China are generally marked a peak point of noise reduction db, more importantly, Noise bandwidth range and the average noise reduction. Write here may be a lot of domestic noise reduction headset manufacturers Paizhu, really helpless, we beats by dre are more concerned about the acoustics online many sincere friends.Therefore continue to post a few Consulted our question, important things to say it again!

1. Does the active noise reduction headphones affect the sound quality of music playback?

If you open the active noise reduction mode will inevitably affect the sound quality, which is not necessarily bad, because some people really like some kind of rendering of the sound, and active noise reduction headphones in the rendering of the sound may make you feel comfortable, but If you want to listen to high-quality music, do not open this model, and if you are a music enthusiast, it is recommended that you choose vice HiFi's headphones.

2. Buy active noise reduction headphones generally pay attention to what the problem?

First of all you should first look at this article, to understand some of the basic principles to prevent being ignorant flicker; second you should go to experience the store try, if you are the first purchase is not recommended directly to your online purchase, and first find out the actual If you decide to buy, still have to look at the parameters of beats earphones indicators, such as noise reduction range, the average noise reduction, etc. Also note that some of the parameters of the virtual standard, active noise reduction technology, after all, is still a Complex technology, the algorithm and hardware requirements are very high, if it is particularly cheap to be careful, and then add that, but also pay attention to the battery, after all, always charging is not a way, another sale is also very important, do not forget , The active noise reduction headphones which also more speakers, if not handled properly but will increase the noise and even howling, and a long time easy to aging the hardware seriously affect the performance, not a stable after-sales protection is really not work.

3. Noise reduction headphones really can do to remove all the noise?

Sorry, the front said, is the best noise reduction headphones will not shield all the sound, you will still hear the high-frequency transient noise, high-frequency noise which? Every day in your life will encounter these The sound of the aircraft engine will sound more or less into your ear, even at the best suitable scene, and there is not yet a headset that will make you feel that you are not on the plane. You do not believe in advertising, not so many miracles happen.