HIFI耳机基础知识入门(国外英文资料).doc

HIFI耳机基础知识入门(国外英文资料) A headset, how classified? 1, according to the exchange principle (Transducer) is the main coil (Dynamic) and electrostatic (Electrostatic) headset two categories, although in addition to the two class is so magnetic number, but have been eliminated or for professional use or market share is few, do not discuss this. Principle: the most dynamic headset (more than 99%) of the headset are such that the principle is similar to the ordinary speakers, in the permanent magnetic field in the coil is connected with the diaphragm, coil driven diaphragm sound signal in current driven electrostatic headset: electric diaphragm is changing, diaphragm thin, accurate to a few micron (current electrostatic diaphragm headset of a new generation of STAX is accurate to 1.35 microns), the coil drive force of the electric field driven diaphragms. 2, according to the opening degree is mainly open, semi open and closed (sealed). (1) open: general sense of natural, comfortable to wear, common in the home to enjoy the HIFI headset, sound can be leaked, and can also hear the voice of the outside world, the oppression of the small ear headset. (2) semi open: no strict rules, sound can not only enter can not only, and make corresponding adjustments according to the needs of. (3) closed to the ear ear: to prevent the entry of sound pressure is larger, the correct sound clear positioning, such more professional monitoring in the field, but this kind of headset has the disadvantage that the bass heavy pollution, W100 is an obvious example. 3, according to the application of the main home (Home), (Portable), portable monitor (Monitor), (Mix), a remix record (Binaural Recording) two, headset (Impedance) impedance parameters related to pay attention to the difference and resistance in meaning, in direct current (DC) in the world, the object is called resistance on current hinder, but in alternating current (AC) in the field of the resistance will hinder the current, capacitance