earphone

Abstract

The invention discloses an earphone. The earphone comprises an electronic frequency divider, a high-pitch loudspeaker unit, a medium-pitch loudspeaker unit and a low-pitch loudspeaker unit, wherein the electronic frequency divider is used for dividing audio analog signals into high-frequency signals and low-frequency signals according to different frequencies, and comprises a high-pass filter and a low-pass filter; the high-pitch loudspeaker unit is electrically connected with the high-pass filter; and the low-pitch loudspeaker unit is electrically connected with the low-pass filter. In the earphone, the signals of different frequencies are allocated to different loudspeaker units, so that a sound interference phenomenon among the loudspeaker units in different working frequency bands can be overcome on the one hand. On the other hand, all the loudspeaker units work in optimal frequency ranges, so that frequency distortion is lowered, and the aim of playing sound with high fidelity is fulfilled.

Description

technical field [0001] The present application relates to a sound transmission system, in particular to an earphone. Background technique [0002] Earphones in the prior art can be classified according to their energy conversion methods, such as moving coil type, moving iron type, etc. [0003] Dynamic earphones are similar in principle to electric speakers. The wound coil is connected to the diaphragm and placed in a permanent magnetic field. The coil changes under the drive of the signal current, driving the diaphragm to produce sound. In dynamic headphones, the diaphragm has folds. The vibration of the diaphragm includes the expansion and contraction of the diaphragm and the deformation of the folds. [0004] Moving iron earphones, also known as balanced armature earphones. The vibrating part of this earphone is an iron sheet suspended in front of the electromagnet and a diaphragm driven by the iron sheet. When the signal current passes through the electromagnet, th...

AI Technical Summary

Problems solved by technology

However, for the low-frequency signal current, the electromagnetic field of the electromagnet changes slowly, which leads to the poor response of the moving iron earphone to the low-frequency signal current.

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