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Why the frequency of many headphones are 20HZ-20000HZ?

  • Author:Benson
  • Release on :2017-03-01
With the power of smart phones, mobile app development also maintained a strong momentum. Which need to use the headset app is also very rich. Now the smart phone is not only easy to listen to songs, watching movies, etc., even K songs are very convenient. All the people K song, singing, cool my music and so on more and more loved by young friends. Not only can sing to their own, you can also sing to the stranger to listen, sing good, popular, not only has a lot of fans, but also earn a lot of money.

Now a lot of friends to buy headphones, I believe many friends will see or try to see the packaging logo headset parameters, specifications. But how many people can understand the meaning of the above parameters? Now for everyone to introduce the knowledge about the headset parameters - headset frequency range.

First, the way the sound into the inner ear there are two, one is the most common air conduction (involving the ear structure, the specific process is not introduced, are interested in their own Baidu), the other is a little more recent recent bone conduction. Through the head of the skull vibration, the sound waves directly spread to the outer lymphatic hearing. The use of bone conduction technology, the type of headphones is still very small.

Audible sound stimulation must meet two conditions - frequency and intensity. Only when a certain frequency of sound reaches a certain range, and the sound intensity reaches a certain level, people can hear the sound. For hearing normal young people (12 to 25 years old) can perceive the sound frequency range is: 16HZ-20000HZ, the general human hearing frequency range is 20HZ-20000HZ, which people 1000HZ-2000HZ frequency range of the sound, the most it is good. After 25 years of age, the sensitivity of the frequency above 15000HZ is significantly reduced. As the age increases, the frequency perception threshold decreases year by year. However, for the frequency f <1000HZ low-frequency sound, almost no increase with age and reduce the sensitivity of perception.

In order to meet people's demand for sound frequency, headset manufacturers in the design of headphones are generally provided when a wide range of frequency response. So that will be able to meet the needs of the vast majority of people.