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≥1/piece
USD 21.90
Noise-canceling headphones are designed to reduce or eliminate ambient noise by using active or passive noise cancellation to create a neutral sound environment. This type of headphone has two types – active noise canceling and passive noise blocking.
Active noise canceling is achieved by generating reverse sound waves that are equal in amplitude but opposite in phase to the first three or four unlabeled frequencies (for instance, 100Hz and 120Hz), which cause the total amplitude of the combined signal to be minimized when this signal is played back over air.
Passive noise reduction relies on a physical barrier between the user's ear and external sounds — such as earmuffs mounted on headphones — to prevent surrounding sounds from entering the ear canals (as opposed to active noise cancellation, which creates an internal sound field that counteracts outside sounds).
Noise cancellation, a function of headphones, a certain degree of isolation from external noise. Noise cancellation is also divided into active noise cancellation and passive noise cancellation.
The same is wearing headphones, wearing noise-canceling headphones instead is good for the ears.
If we are wearing ordinary headphones, we will unconsciously turn up the sound volume on our commute as outside noise rises and falls and always rises. And the World Health Organization has issued a warning, that headphone volume is recommended at less than 60 percent appropriate, otherwise, it may be harmful to the ears. And noise-canceling headphones, you can not raise the volume of the case, to maintain normal use.
The first is to confirm the style according to the use scenario.
True wireless Bluetooth style: the most versatile type, can adapt to various places such as commuting, music, games, sports, etc. The use of unrestrained, quite free up.
Head-worn type: suitable for people who have requirements for games and music quality, and many people wear them on the commute. And a large headset has an additional passive skill: I wear such a large headset, there is no urgent matter, do not bother me.
Wired: also can be universal for a variety of occasions, the biggest problem is wired, it is not so convenient. But the same sound quality, wired will be cheaper.
Our Company mainly specializes in design, R&D, sales and production of all-in-one computers, mini PCs, Cloud desktops and other computer peripherals, and import and export of products and technologies.
Our factory consists of office area, production lines and warehouses covering an area of 2,200㎡. We have our professional design, manufacturing and technical service teams, scientific management concept, advanced testing means, reliable QC process, stable product performance and complete supporting facilities effectively guarantee that customers can receive high-quality products and excellent pre-sales and after-sales services.
Our factory located in Shenzhen,China, with production area around 1000 square meters. We have a 50M full-automatic tooling board production line, a full-automatic production line, a semi-automatic pre-processing production line, and an independent high-temperature aging room; The factory has more than 30 employees for production, We have a full set complete production equipments , and our factory with a monthly production capacity of more than 15000 computers;
our factory has a variety of reliability equipments for quality control: 2 programmable constant temperature and humidity test machine, 1 drop test machine, 1 electromagnetic vibration test machine, 1 intelligent salt spray test machine, 1 Alcohol rubber wear resistance test machine, 1 bedroom plug-in life test machine, 1 programmable power supply test machine, 1 electrostatic tester; While ensuring the production capacity, our QC system also ensure the quality stability for all products.
Normally for our standard products ,the delivery time is around 20 days after we get the order final confirmed. For the OEM items, delivery time will be around 30 days or longer which depends on clients request.Regarding the shipping matter ,we normally communicate with clients for which way they want to ship when they play the order, then we will offer our related support.