In the eyes of the public, noise reduction headphones may be relatively unfamiliar. If it is not a new product for enthusiasts with high pursuit of pure music texture, the enthusiasm level of enthusiasts for music purity can almost become magic. Usually, most people choose the earphones at most because they may care about its appearance enough and cool enough, but ignore the sound quality! Enthusiasts don’t care too much about whether its appearance is low to low, but focus on what kind of music the headset itself is suitable for, and what kind of music can better show its characteristics.
How can it be considered enjoying music? The boundary of this meaning is more vague, more precisely it varies from person to person: you think that listening to music during sports is enjoyment; she thinks listening to concerts in the Opera House is enjoyment; and I think it is in an environment without a trace of noise Listening to music is the most enjoyable moment of it. Of course, I imagine that the environment without a bit of noise is very beautiful, but the material and financial resources are limited, and this kind of assumption is difficult to realize! However, with the advent of noise-cancelling headphones, it can give me a good idea of 80% early adopters. The noise-cancelling headphones use the principle of noise reduction to achieve noise reduction effects, and the remaining 20% is part of the noise that it can’t help.
The evaluation of this experience is: Xiaomi Double Moving Coil Moving Iron In-ear Noise Cancelling Headphones (3.5mm Interface Version)
This Xiaomi noise reduction headset comes with a “small gold label”, which represents the high-quality sound quality that can restore music. The official description is as follows: Xiaomi noise reduction headphones pass the Japanese Hi-Res Audio audio product standard certification, which means that Xiaomi has reduced Noise headphones can restore CD-level sound quality, more detailed description of music, and more accurate reproduction. The box uses a transparent plastic box, you can directly see the physical shape of the headset, the more prominent front is the small gold label in the lower left corner; the back is the performance parameters of this headset.
The manufacturer of Xiaomi noise-cancelling headphones is the Xiaomi Eco-Chain Enterprise: Ear No. 1 Acoustic Technology. If the company name is directly mentioned, it may be relatively unfamiliar, but if 1MORE is mentioned, then it will not be unfamiliar.
The earphones are housed in a small hard plastic box, but this box cannot usually be used as a storage box, because the sides of the box are sealed with transparent glue, but it is equipped with a velvet storage bag.
This storage bag uses pull ears to lock the mouth of the bag. I personally do n’t like this kind of pull ears to close the mouth of the bag. It is better to change it to a micro-elastic closure. You can open and close the bag by squeezing it with your hands. Mouth, can also avoid the embarrassment of forgetting to tighten the pocket mouth headphones. The nameplate sticker on the back of the hard plastic box is the same as the transparent box of the outer packaging: the performance parameters of the headset.
You can take out the earphones when you open the box. The earphones are wound on the gray silicone winder. At the bottom of the box are three sets of size silicone earphones (XS, S, L), and one set on the headset. There are 4 sets in total. Silicone earbuds. The official standard of this headset is black, in fact, it is not pure black, but metallic gray black.
Detail
The control of the headset is very simple. The function buttons on the three-button remote control are compatible with Android and Apple iOS systems. However, the use of Apple iOS systems only implements a part of the functions: pause / play music, and switch between up / down tracks. In addition to these functions, you can control the volume and answer / reject / hang up calls. Xiaomi noise-cancelling headphones are not bad in terms of compatibility. It is a pity that it is castrated for the support of Apple’s iOS system. It does not seem to be very friendly to Apple users. I lack the volume control.
The metal elastic back clip can be easily clamped on the collar of the clothes, reducing the stethoscope effect of the earphone cable on the friction of the clothes, and it can also fix the earphone cable without shaking.
Active noise reduction and quiet music, domestic noise reduction headphones cost-effective choice-Xiaomi noise reduction headphones 3.5mm interface version evaluation
The remote control has a built-in lithium battery. The lithium battery is used to provide power for active noise reduction. The battery capacity is 55mAh, which can be fully charged in 2 hours. After the battery is fully charged, it supports 12 hours of battery life. The charging port uses a standard Micro-USB. The charging port is designed on the upper left side of the online control. The headset does not have a standard charging data cable. Many mobile phones now use the mainstream USB-C interface. If you use these USB-C interface phones If you need to buy another Micro-USB data cable.
There are three types of noise reduction switches for Xiaomi noise reduction headphones: turn off noise reduction, weak noise reduction, and strong noise reduction.
If you have n’t heard of noise-cancelling headphones, many people will mistakenly think that noise-cancelling headphones are headphones that can eliminate all noise and isolate all noise in the external environment to hear pure music. In fact, only the noise of a specific frequency is filtered out, and the specified noise is not selectively removed, but not all are removed. Noise reduction headphones are roughly divided into: active noise reduction and passive noise reduction.
Passive noise reduction: It is called physical noise reduction. The most common passive noise reduction is in-ear headphones. Structurally speaking, in-ear headphones have better sound insulation than flat headphones. In-ear headphones, silicone seals the external sound, making the whole a closed environment with physical noise reduction. The sound is emitted from the speaker and passed directly into the ear through the mouth. Although the in-ear headphones are good, they are uncomfortable to cause tinnitus when worn last time, and because of the physical noise reduction, the external sound is closed, which is likely to cause safety hazards: TV news often encounters reports of crossing the road and cycling, etc. Wearing headphones on the road No cases of traffic accidents caused by passing vehicles were noticed.
Active noise reduction: Active noise reduction headphones use digital signal processing (DSP, Chinese translation: digital signal processing) to eliminate external noise. Active noise-cancelling headphones are not much different from ordinary headphones. Most of them are digital signal processing with an active noise-cancelling circuit added to the original. After the processing of the circuit, the noise-cancelling speakers can emit noise. Mechanical waves with opposite phases cancel each other with noise superimposition, so as to achieve the purpose of minimizing noise.
Active noise-cancelling headphones are limited in the range of noise processing capabilities, and they are not able to cancel out sounds of all frequencies. They mainly deal with low-frequency noise (below 1 kHz) and short-wavelength complexity for high-frequency noise (above 1 kHz). It is almost impossible to deal with it. The biggest reason is the current technical limitations. Therefore, active noise reduction headsets are mainly used to deal with low-frequency noise, such as noisy human voices in urban areas, booming noises in aircraft cabins, and subways crossing railroad tracks. Noise, etc., can be processed through active noise reduction headphones to get more comfortable sound.
As can be seen from the above figure, the earbuds of the Xiaomi Noise Cancelling Headphones are slightly inclined into the ear canal. Compared to some straight earbuds, it is more comfortable to enter the ear canal. Noisy space. The silicone earplugs are soft and have good resilience. After removing the earplugs, you can see the in-ear cavity. The in-ear cavity is a flat round mouth. The mouth of the cavity has a dust screen to prevent some dust from entering the cavity.
Xiaomi noise-cancelling headphones do not use many mainstream 3.5mm straight plugs, but traditional L-shaped plugs. This plug fits the phone well regardless of whether the phone ’s headphone jack is up or down. I personally prefer this L-shaped plug. Newer phones such as the iPhone X do not have a 3.5mm headphone jack. If you want to use this headset, you need a Xiaomi Bluetooth audio receiver. The L-shaped plug on the receiver will look ugly. As for personal choice, It depends on demand.
Sound quality
Use playback devices separately: FiiO X5 + E12A amp bundle (traditional HiFi player), iPhone6S Plus (iOS system), Hammer M1 (Android system)
The resolving power of the symphony playing instrument is still good, and a clear sense of space can be heard at low frequencies, but the analytical power of rock music realization is relatively more symphonic: the chaos is more jerky, the rock shouting vocals are jerky, compared Fans who like rock music may find it more mediocre. The realization of mediocre rock music does not mean that it is of poor quality. Each headphone has its own targeted tone calibration, depending on the quality of its tuner. Just as Meizu ’s Flow used 2 different units some time ago, even if it used On the Lou unit, the tuner’s poor tone adjustment is difficult to highlight the expressiveness of the Lou unit. Of course, this is an example.
After turning on the active noise reduction function of Xiaomi Noise Cancelling Headphones, you can obviously feel that the volume becomes louder, the bass enhancement and resolution are also improved a lot, and the vocal resolution is more stripped and clear, and there is no sense of chaos. If it is in a very quiet environment, turning on the active noise reduction function is counterproductive, and it will be very obvious that you can hear the phase cancellation of the active noise reduction. Therefore, turning on the active noise reduction function still depends on the environment used. In subways, downtown areas , Aircraft and other places with significant noise are still effective. There is also a difference between Xiaomi noise-cancelling headphones and some traditional noise-cancelling headphones, that is, there are multiple noise reduction function options, and different noise reduction strengths are selected through different environments: if it is a slightly noisy environment, it is similar to someone in the office talking Etc., you can turn on the noise reduction function to: weak noise reduction; if in a downtown area or a lot of noise in the construction of electric drills, you can choose strong noise reduction.
Advantage:
- Support traditional 3.5mm headphone jack.
- In addition to the active noise reduction function, you can freely choose the strength of the noise reduction capability.
- the battery life is relatively long, 2 hours can be charged for 12 hours.
- The remote control has a back clip.
- Ear pressure is relatively low when noise reduction is turned on.
Disadvantages:
- There is no short-line version of the headset version. If you connect to the Xiaomi Bluetooth Audio Receiver, the line will look longer.
- The headset does not have a monitoring function. If you turn on the noise reduction function when you go out, it will filter part of the surrounding sound. If it is at the railway station or airport, you may miss the train flight report from the broadcasting station.
- For iOS system support, some key functions are missing.
- Although the earphones use 2 sections of cables of different materials (the main line uses braided wires with anti-tension and anti-jamming, and the tail wires use skin-friendly and high-elastic TPE material), the tail wires of the earphones may be prone to rubber aging and easy to roll in the future.
- Xiaomi noise reduction headphones only 3.5mm interface version and Type-C version, lack of Lightning interface version.
There are still some disadvantages of noise-cancelling headphones: After activating the active noise reduction function, if the ears are very sensitive, listen carefully and you will hear the noise floor with noise reduction processing. This is definitely there, unless you do not turn on active noise reduction. Function, otherwise it will always exist. If your demand is greater than the noise floor, then it is recommended to enable the active noise reduction function; if the demand is greater than the noise reduction, it is not recommended to choose an active noise reduction headset. Noise-cancelling headphones can be turned into ordinary headphones for noise reduction.
Regarding the experience of Xiaomi noise-cancelling headphones, I personally feel that its price / performance ratio is still relatively high. Although many mobile phones have gradually reduced the traditional headphone jack, I still hope that Xiaomi noise-cancelling headphones can introduce a wireless Bluetooth version. Many mobile phones were used. Like my article, remember to follow me, and I will share my original life next time.
