For earphones, there is no need for speakers and sound cards to be purchased, which is relatively simple. According to the function, headphones can be divided into two kinds of headwear type and earplug type. The first one is not easy to carry. If it is used in home or office, many with the microphone. The latter are mainly easy to go out to listen to music, mainly for Walkman and MP3 players. So when you choose and purchase, you should start from the above situation, if it is used in the home, the choice of head wear type is better, and it is not easy to damage; often used outside the ear plug is more convenient.

After more than 30 years of development, the headset has become a necessary equipment for many people, it is small and exquisite, does not interfere with others, the sound effect is more real, compared with the common single channel earphones and some sound equipment, it can give people the infection of the stereophonic sound. So how to choose a good computer stereo headphone? Please listen to me slowly.

1. classification of earphones

(1) according to the principle, it can be divided into electric and capacitive type.

A. electric type, also known as moving coil type, has the characteristics of high sensitivity, high power, simple structure, stable sound quality and timbre.

B. capacitance type, also called electrostatic type. It has the advantages of wide bandwidth and good sound quality, but its structure is very complex, which makes it difficult to manufacture. This kind of earphone is rarely used in the market now.

(2) according to shape, it can be divided into closed, open and semi open:

A. closed headphones as the name implies is that the earphones are completely closed by their own ear pads. The headphone has a large head and is mainly used in noisy environments.

B. open headphones are the most popular headphone styles at present. It is characterized by the use of soft sponge like foam plastic as a transparent ear pad. It has the characteristics of small size, comfortable wearing and no isolation from the outside world. Its disadvantage is that the low frequency loss is large.

C. semi open headset is a new type of headset, which combines the advantages of closed and open two types of headphones. It uses a multi - vibration membrane structure. In addition to an active active membrane, there are many passive films. It has the characteristics of low frequency, plump, soft, high frequency, bright, natural, clear level and so on. It has been widely used in the high class earphones nowadays.

(3) dual frequency earphone two frequency earphone is a new generation of earphone with two frequency division based on half open headphones, which combines the advantages of electric and capacitor. It combines the advantages of four types of electric, capacitive, closed, open type headphones. It has the advantages of large dynamic range, good transient response, transparent and pure sound, rich tone color and so on. It is the best choice for the listens.

2. how to buy earphones for earphone HiFi can be considered from the following points:

(1) type generally speaking, the electric headset has a stable sound quality, simple structure, cheap price features, suitable for the general selection; and capacitive headset, with good sound quality, wide band characteristics, but high price, suitable for the use of the burning friends.

(2) because of the long wearing time, the earphone should have a very soft and comfortable ear pad and a small pressure head. As for the choice of earplug or the choice of head wear, it can be determined by the specific circumstances. It is not possible to use a big full head mounted headset on your ear in a hot day.

(3) the index can understand the performance indicators of its instructions, which generally requires the minimum of the frequency range of 20 to 20KHz, greater than the power of 100mW, less than 0.5% of the harmonic distortion, etc. If you fail to meet the above requirements, you'd better not buy them.

(4) the appearance is judged by appearance. It is more smooth than traditional earphone, with fine workmanship and excellent hand feeling. It should not have the rough feeling of using inferior plastic. In addition, the diameter of the lead wire of the earphone is thick, soft and not hard. Its plugs need to be neat and smooth, and the coating is smooth and uniform.

(5) there are so many auditions, but the most important thing is to listen in person, which is the most critical step. When listening, try to choose a good program source to listen and do not use the inferior sound source. The specific situation is only listened to by your ear carefully, the author can not help you to hear, good or bad.