General Knowledge of Earphone and Secrets to Choose

更新时间:2012/1/4 15:59:45 点击量:

  Strictly speaking, the headphone is the listening device with larger pronunciation body and required to be worn on the head, which is not the earplug used by the majority of Walkmans. Do You Know How wedding accessories Prevail? A Horrible Number! According to the transducer principle, headphones can be divided into two broad categories: electric type (dynamic type) and capacitance type (electrostatic type). The Unknown Misconceptions of . Heres the Answer. Fashion Trend Around The World: cheap glasses The principle is to make electric field in the coil through the current, so that diaphragm sound, characterized by high sensitivity, and can withstand higher power, sound quality and stability, structure, simpler. Capacitive type headphone's wireless circle, the diaphragm is generally used as the movable electrode. When add the signal on the diaphragm, it will get the sound for the attraction and repulsion vibration because of the change of signal polarity on the poles. It is characterized by wide-band, excellent sound quality, but its structure is complex and the cost is high.Vintage-Inspired: Magnificent JewelryWhat are the good qualities of this headphone? First, its tone color is clear and authentic.Sound units of headphone need not the larger electric power which is often lower than 0.2W, so the signal from the sound source can keep the original after circuit is magnified. It will not pose great difficulties for us to get full-range regeneration of sound of the headphone. Any Headphone with relative better quality has frequency index better than 20-20KHZ. As to the first-ranking headphones, 10-30KHZ could be reached. And distortion could be under 0.2% which is a standard most sound systems fail to achieve. The diaphragms of the headphones are of low mass, so it has excellent transient characteristic and high control ability. unlike the loudspeaker, which may reduce the replaying quality for sound impacted by the movement of piston and so on, therefore, the headphones have high resolving power, large dynamic range and natural, pure voice.as well as spaciousness. While the sound field felt with the headphone spreads forward around a sphercial surface with the head as the center, the sound field of the sound system spreads in front of the auditor .Therefore, wearing a headphone, one will feel like sitting in the middle of the very front row of the concert hall, almost the same positon where the conductor stands. It feels incredibly perfect as the whole body is immersed in the sound of the music.Besides, the headphone has accurate sense of direction. With only one sounding point, it can reverse what the sound technician process with the stereo sound and directions of the sound source from instruments. It can reproduce the complete sound effect of the band performance through different kind of direction process.But it is difficult for the sound system to do this, as everyone knows that with the acoustics settled, one can only get voice from a settled place, however, with a pair of headphones one can go wherever he wants, a fantastic thing, isn't it?Purchasing headphones, a technical indicator should pay special attention to is its impedance. Middle and low impedance of headphones is usually 30-50 ohm, can be directly inserted for the players and other devices, such as: VCD, LD, CD, DVD, CARD, radios, etc. The impedance for MD moving coil type of high - level headphones is above 300 Ohm, which need special headphones to promote before using, for example: The impedance of Forest and Sea HD - 580 and HD - 600 is 300 Ohm.With my above introduction, does your mind disturbed? Action is better than hesitation, go at once and buy one. You may not believe such great change will be made by changng your headphones.