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Why so many of the frequency response of headphones is 20HZ-20000HZ?
Oct 14, 2016

With the powerful Smartphone features, mobile app development also maintained strong momentum. Which requires the use of headphones app is also very rich. Now smart phones are not only convenient for listening to music, watching movies, and so on, even the karaoke is very convenient. Universal k song, sing it, cool music, more and more young friends favorite. Not only can sing to yourself, you can sing for strangers, sing good, popular, not only has a lot of fans, and can earn a lot of money.
Buy headsets now has many friends, I believe many friends or try headphones parameter, specification of the package. But how many people can understand the parameters of the above mean? Small series to introduce parameters of knowledge--on headphones headphone frequency response range.
First voice of the inner ear in two ways, which is the most common air conduction (involving the ear structure, does not describe the specific process, interested please Baidu on their own), and the other is slightly more common recently bone conduction. Through the skull of the head vibration, sound waves directly propagated to the perilymph to the hearing. Types of headsets using bone conduction technology is still very low.
Can produce acoustic sound must meet two conditions-frequency and intensity. Audio only when a rate within a certain range, and the sound intensity reaches a certain level, people can hear sounds. For hearing young people (between the ages 12 to 25 years old) can perceive the sound frequency range are: 16HZ-20000HZ, General of the audible frequency range are 20HZ-20000HZ, of which about 1000HZ-2000HZ sound in the frequency range and feel the best. People after the age of 25, and perception of 15000HZ frequency sensitivity was significantly lower. With the increase of age, frequency sensing ceiling down year by year. However, for frequency of low frequency sound f<1000HZ little with age and decreased perception of sensitivity.
In order to meet people's demand for frequencies, headset manufacturers when designing headsets generally provide a very wide frequency range. So how many people will be able to meet the vast needs.