What are the benefits of active noise cancelling headphones for the ears?

Maybe some users are not very familiar with noise-cancelling headphones. Noise-cancelling headphones can neutralize noise (decibels (dB)) to achieve a perfect noise reduction effect.

Active Noise Cancelling Headphones Active Noise Cancelling Headphones are equipped with exclusive noise reduction circuits, including custom high-sensitivity MEMS silicon microphones and professional-grade noise-cancelling chips, which cancel noise by receiving and analyzing the outside noise spectrum and generating a signal with the opposite phase. So are noise-canceling headphones good for your ears? Let's take a closer look at it next.

There are two methods of noise reduction in headphones, active noise reduction and passive noise reduction. The active noise reduction function is to generate reverse sound waves equal to the external noise through the noise reduction system to neutralize the noise, so as to achieve the effect of noise reduction. Active noise-cancelling headphones have a noise-cancelling circuit (Electric circuit) that contends with external noise.
 Most of them use a larger head-mounted design (Design), which can block external noise by using earplugs and earphone shells to block external noise. A round of sound insulation, but also in order to have enough space to install (ān zhuāng) active noise reduction circuit and power supply (power supply). Passive noise-cancelling headphones mainly block external noise by surrounding the ears to form a closed space, or using insulating materials such as silicon earplugs.
Since the noise is not processed by the noise reduction circuit chip (also known as a microcircuit), it can generally only block high-frequency (Induction Heating) noise, and the noise reduction effect on low-frequency noise is not obvious.
The three noise reduction measures usually used to reduce noise (referring to the solution to the problem), namely noise reduction at the sound source, noise reduction in the process of propagation, and noise reduction at the human ear, are all noise reduction measures. passive. In order to actively eliminate noise, people have invented; active noise cancellation; this technology (Technology).
Its principle is: all sounds are composed of a certain frequency spectrum. If you can find a sound whose frequency spectrum is exactly the same as the noise to be eliminated, but the phase is just opposite (a difference of 180°), the noise can be completely canceled. . The key (explanation: an important part of metaphors) is how to get that noise-cancelling sound. The actual approach is to start with the noise source itself and try to reverse the phase of the original noise through electronic circuits. From this point of view, the technology of active noise reduction is actually fighting fire with poison.
Noise-cancelling headphones are suitable for business people first. The principle of active noise reduction is that all sounds are composed of a certain frequency spectrum. If you can find a sound whose frequency spectrum is exactly the same as the noise to be eliminated, but the phase is just opposite, the noise can be completely eliminated. Due to frequent business trips, especially business people who travel between different cities every day, they must hate the noise in the cabin the most.
If there is a noise-cancelling headset, they must be able to stay away from these noises, and at the same time, they can relax by listening to music.
 Of course there are subway people. Office workers who crowd the subway every day are probably accustomed to the noise in the subway, but at this time, if you can have a pair of noise-cancelling headphones, you can not only stay away from the noise, but also adjust your mood through the headphones and enjoy it happily. process. Office workers also need a pair of noise-cancelling headphones.
Sometimes when I'm thinking about a plan, it's very annoying to hear the sound of the central air conditioner running, and it's even more annoying if there are colleagues around me who are constantly talking to each other.
At this time, you might as well wear a pair of noise-cancelling headphones and expand your ideas in beautiful music. Are noise-cancelling headphones good for the ears? Ordinary headphones do not have noise-cancelling functions, and headphones cannot eliminate noise (decibels (dB)) because the eardrum is very close to the headphone vibrating plate.
The transmission range of sound waves is small and concentrated, and the stimulation of the auditory nerve of the eardrum is relatively large. It seems that a noise source is placed on one's own ear, and the super-strong sound directly acts on the auditory system. This exposes the ear to high-intensity noise for a long time, causing ear inflammation, dizziness, tinnitus, deafness and other symptoms over time. It can also make people tired and irritable, causing headache, dizziness, increased blood pressure, and loss of appetite and other symptoms. These headphone products are slowly eating up the hearing, physical and mental health of a large number of people. However, active noise-cancelling headphones isolate the external noise (dB) environment, so when you hear satisfactory music, the sound at this time is actually much lower than the strength of the sound you usually listen to, and isolates the sound.
Noise damages the eardrum and eardrum, which is the most important factor for noise-cancelling headphones to protect hearing. Active Noise Cancelling Headphones Active Noise Cancelling Headphones are equipped with exclusive noise reduction circuits, including custom high-sensitivity MEMS silicon microphones and professional-grade noise-cancelling chips, Noise is canceled by receiving and analyzing the external noise spectrum and generating a signal in phase opposite to it.