Noise-cancelling headphones have gained popularity in recent years, not only because they provide a purer listening space, but also because they help us protect our hearing in noisy environments. However, it is not easy to choose a noise-canceling headphone that is suitable for you. Let's quickly grasp the principle of noise-canceling headphones to prevent mistrusting the exaggerated propaganda and wrong information of merchants.
How noise-cancelling headphones work.
There are two types of noise-cancelling headphones, passive noise cancellation and active noise cancellation. Passive noise cancellation relies on the physical design of the headphones, such as the use of materials such as sponge pads to block sound waves. Active Noise Cancellation (ANC) technology calculates sound waves in opposite phases from the ambient noise captured by the microphone on the outside of the headphones, which are released through the headphones to cancel out the ambient noise. However, it is mainly effective for low-frequency noise below 1000Hz, and has limited effect on mid-to-high frequencies such as human voices.
Buying tips. When choosing noise-cancelling headphones, here are a few things to keep in mind to help you make a more informed choice
1.Material & Comfort: Silicone earplugs are suitable for long-term wear, and polyurethane earplugs have a better noise reduction effect. When selecting, pay attention to the matching degree with the ear canal to improve the noise reduction effect.
2.Noise reduction depth: The noise reduction depth marked on the product details page is deceptive, and the noise reduction depth mentioned cannot fully reflect the actual effect, and needs to be verified by the noise reduction curve. At this point, you can take a look at some bloggers' noise reduction curve tests of products, and headphones with better active noise cancellation capabilities can more effectively reduce low-frequency noise.
3.Sound quality and coding: Although sound quality is not the primary consideration for Bluetooth headsets, the frequency response curve can reflect its sound quality performance. The bitrate and supported encoding types such as AAC, SBC, APTX, LHDC also directly affect the sound quality.
4.Latency: Gamers in particular should pay attention to the latency of the headset, a good headset has a latency of less than 200 milliseconds, which is less likely to affect the gaming experience.
5.Experience: From the weight of the headset to the stability, to the seamless switching, ear detection, and other features, the actual experience is especially important. The try-on experience will help you decide which model is best for you.
By understanding how noise-cancelling headphones work and how to buy them, you'll be able to avoid buying over-advertised products. When purchasing, you should combine your actual needs, sound quality preferences, comfort requirements, and compare the performance of different brands and models. Remember, try to take advantage of the try-on service for seven days, so that you can better choose the right headphones.