The difference between ordinary headphones and noise-cancelling headphones
First of all, there are obvious differences in positioning between ordinary headphones and noise-cancelling headphones (active noise-cancelling headphones). Ordinary headphones are mainly to meet your daily needs of listening to music, watching movies, and making calls, and more like to meet everyone's basic listening to songs. However, it often interferes with the listening effect due to the noisy environment; while noise-cancelling headphones are mainly to meet the needs of everyone to better shield external noise in a noisy environment, so as to experience a better listening effect, such as in some noisy environments. Miscellaneous companies, mechanical noise during flight, noise-cancelling headphones can isolate most of the external noise (earphones with good active noise reduction), so listening to songs will not be disturbed by too much external noise, and you can enjoy high-quality music.
Active noise reduction: Active noise reduction headphones are much more complicated than ordinary headphones. A noise reduction module needs to be built in the headphones. It contains a microphone to receive external noise, and then through the calculation of the internal circuit, play music in the headphones At the same time, it adds sound waves that are "inverse" to the external noise, so as to cancel the noise, so that your ears can only hear the music itself, so as to achieve the effect of noise reduction.
Passive noise reduction, through the sound insulation material or special structure on the earphone, isolate the noise as much as possible. Passive noise-cancelling headphones mainly block external noise by surrounding the ears to form a closed space, or using sound insulation materials such as silicone earplugs. The most common headphones with in-ear earplugs and large earmuffs can be classified as passive noise-cancelling headphones. If we compare the noise reduction effects of the two, generally speaking, the noise reduction effect of active noise reduction headphones is more obvious than that of passive noise reduction headphones, and it is also respected by more users who pursue the ideal noise reduction effect.
As more and more consumers realize the advantages of noise-cancelling headphones, and the sound quality of noise-cancelling headphones is getting better and better, active noise-cancelling headphones have also begun to become the ranks of people's daily use of headphones, no longer just for travel or Office noise reduction, active noise reduction headphones are also more like the choice of ordinary headphone consumption upgrades.
