Everyone has different opinions on the definition of a good earphone. To evaluate whether a headset is good or not, most people agree that the higher the price, the better the quality of the headset in all aspects. The evaluation items include shape, workmanship, wearing comfort, sound quality, etc., and sound quality is a very broad concept, including resolution, tri band, dynamic range, sound field, etc. Generally speaking, it is a good earphone that can be competent for the type of music you like, the sound quality meets expectations, the quality is reliable, the wearing is comfortable, and the price is appropriate.
Xiaobian agrees with this view: “an excellent earphone should make use of advanced science and technology to achieve the maximum optimization of sound quality on the premise of protecting ear health.”
Especially for friends who often use earphones, a good earphone becomes more important. If you are an MP3 player or an enthusiast of various portable music players, you’d better choose a high-end headset, which not only allows you to enjoy better sound quality, but also ensures that your hearing and ear health will not be damaged.
it is urgent to pay attention to ear health.
The World Health Organization (who) of the United Nations recently conducted a survey of 500 people in 14 cities in China, which showed that at least 30% of the young people and Telephone Center staff who often wear earphones have hearing loss of varying degrees. In fact, when most people listen to music with earphones, they often adjust the volume to 50 to 60 dB, and the volume of MP3 players often reaches 100 dB. For this reason, the European Union launched a “hearing protection campaign” in 2008, requiring MP3 player manufacturers to limit the maximum volume to 85 dB. This is because medical research shows that controlling the volume to 85 dB or below will not damage or destroy hair cells in the cochlea, And 100 decibels have exceeded the volume limit of the international health and safety standards for workplaces.
eliminate high decibel
Tips: according to the World Health Organization deafness grading standard:
26-40 db; Mild deafness
41 ~ 55 dB: moderate deafness
56-70 DB: moderate to severe deafness
71-90 DB: severe deafness
poor sound quality affects ear health
In addition to excessive volume, the damage of poor sound quality to ear health should not be underestimated. If the ear wants to hear sound, natural sound waves must first be transmitted to the tympanic membrane through the auricle and the external auditory canal, causing vibration of the tympanic membrane. The vibration is transmitted to the cochlea of the inner ear. The cochlea is filled with liquid and connected to the hair cells that sense the frequency of sound. The capillary cells that sense high-frequency signals are at the bottom of the cochlea, and the hair cells that sense low-frequency signals are at the top of the cochlea, Hair cells can convert the mechanical energy signal of sound wave vibration into electronic signals, pass through and generate nerve pulses, transmit the information of sound to the brain along the auditory nerve, make people feel sound, and finally complete the process of “listening”
inferior earphones destroy our hearing
Experts suggest that deliberately raising the sound signal of high-frequency or low-frequency band will over stimulate the corresponding hair cells, and long-term stimulation will cause damage and death of hair cells. When the hair cells responsible for listening to a certain frequency band are damaged, the sound of that frequency band will be harder to hear. In the early stage, the performance is generally lack of concentration and mild hearing loss, which is commonly known as the “back of the ear”. Over time, the hearing will be seriously reduced. Therefore, this requires high unit quality of earphones. Low end products often have “broken sound” and “popping sound” due to the limited playback capacity of the unit. The impact of these noises on ear health is quite obvious.
Noise stimulates ear cells
The hearing damage caused by inferior low-end products is not deliberate amplification of a certain frequency band, but the signal is easy to be unstable in the process of broadcasting, and the sound may suddenly increase, which may easily cause explosive hearing damage (deafness).
resist inferior earphone products
However, many people do not understand this. They often think that as long as the portable music player is a “famous brand” and the headphones are “original”, it doesn’t matter if you buy a general brand without headphones. There is even an absurd view that as long as the volume is adjusted high enough, the music played by any MP3 will produce the effect of “high fidelity”, so the volume is adjusted higher and higher unconsciously, Little do we know that this is actually the inferior earphones that are destroying our hearing a little bit, and even causing irreversible hearing impairment.
protect your ears from the details.
An excellent earphone should highlight the “natural and pure” style of sound performance, This is also to ensure that the earphone does not have the so-called “sound pollution” (sound pollution is to achieve the so-called “strong bass shaking”) And excessively accentuate the bass, which will cause great damage to the hearing of the ear. In addition, the shape of earphones is also very important. Earphones with ergonomic structure are easy to adjust to fit the ear, more comfortable to wear, and also block external noise, so that listeners will not increase the volume of earphones because of excessive noise even outdoors. All these prove that a high-quality earphone should use the most people-oriented technology, The pursuit of accurate sound restoration and maximum blocking of external noise interference, rather than the need for consumers to constantly increase the volume, at the expense of hearing damage in exchange for “listening truthfully”.
it’s important to protect your ears and use headphones properly
However, after choosing a high-quality earphone, consumers should still pay attention to ear protection. For example, when we use playback equipment, the volume should be controlled within 60% of the maximum volume, not more than 60 minutes a day, and do not listen to earphones in noisy environments such as the subway and buses (because using earphones in a noisy environment will raise the volume involuntarily and easily cause deafness). Remember not to let your ears “overeat”.
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