This era has been inseparable from the music, and the pursuit of music quality is also gradually improved. So, noise cancelling headphones came into being.
As for the function and use, noise cancelling headset is a very good product, it have a very good health care for people's hearing, and even physical and mental health . It can effectively reduce the external noise, and give us a quiet world. Especially in the aircraft, subway, bus and other more polluting environment, it is the most suitable for using noise reduction headphones.
Of course, in addition to the above mentioned scenes, we will also use noise cancelling headphones in our daily lives . For example, editor who is now facing the computer screen and code word, ears often wear a noise cancelling headphones. The reason is simple, codeing article in an open environment , I need a relatively quiet environment in order to better focus and thoughts, work efficiency can be improved. Noise cancelling headphones in this area can give me help, at least after wearing headphones, my world clean 1/3. And the part of the headset was filter out, that is, noise.
In the long time, people use habits are ordinary headphones, Bluetooth headset and HiFi headphones, in fact, noise cancelling headphones in Europe and the United States, Japan and other places are very high penetration rate, BOSE, SONY, AKG, Iron triangle are very popular with users Brand.
Noise cancelling headphones divided into active noise cancalling and passive noise reduction , our daily in-ear is a passive noise reduction, in fact,get the headset into the ear canal, with a physical way to reduce noise . The advantage is low cost, but the noise reduction effect is not obvious, especially for the sustained low-frequency noise it is almost no filtering effect; but the voice, whistle and other important tone was weakened.
Active noise cancelling is different, it collect the ambient noise through the headset on the pickup microphone, then the noise is transfered into a digital signal, and calculate an opposite wave to offset the noise through the built-in chip processor. So speaking of technically , the effect of active noise cancelling is much better than passive noise reduction, low frequency noise filtering is obvious, and it will not filter out such as human voice, car speakers and other necessary high-frequency signal. And natural effects is obviousin when you use under the noisy environments .
Active noise cancelling technology not only involves the traditional acoustics, but also involves the algorithm, the processor, the internal circuit design, and the actual environment of the sound sampling also has a stong relationship, so only a strong technical precipitation of the manufacturers can make simultaneously noise and sound quality.
A few years ago the use of noise cancelling headphones, the author has always thought it is a good thing, and it is worth recommending to each person to use the product, not just limited to the above mentioned several scenes. Living in this era that has been seriously polluted by noise, finding a peace even has become a little high quality.Maybe you will think I am a bit exaggerated, but every day on the subway I see people wearing headphones silent meditation when I Will feel: a quiet heart for the busy and anxious is how important to us.