Earphone with double voice coils

Abstract

The invention provides an earphone with double voice coils. The earphone comprises a housing, a control circuit and a moving coil loudspeaker for receiving a signal output by the control circuit, wherein the moving coil loudspeaker comprises a first voice coil, a second voice coil and a coil sleeve, and the control circuit comprises a voice collecting circuit, a preamplifier, an LC oscillating circuit and a phase circuit, the voice collecting circuit receives a voice signal transmitted from the outside, the voice collecting circuit outputs the voice signal to the preamplifier, the preamplifieroutputs a voice amplifying signal to the phase circuit via the LC oscillating circuit, an audio output end of the phase circuit outputs an inverted voice signal to the first voice coil, and the second voice coil receives an audio signal transmitted by a mobile terminal. The earphone with double voice coils provided by the invention can change the sound wave output phase, and can effectively control the accuracy of adjusting the noise phase, thereby solving the noise problem so as to provide pure music to users without noise interference.

Description

technical field [0001] The invention relates to the technical field of noise-canceling earphones, in particular to a dual-voice-coil earphone that uses anti-phase noise and forward noise to cancel each other out for noise reduction. Background technique [0002] With the development of digital electronic technology, although various technological products bring people a lot of convenience, they also cause a lot of damage to our surrounding environment, such as air pollution, noise pollution and so on. Among them, because noise pollution is directly introduced into the brain of the human body through the ears, it makes people unable to concentrate. [0003] Headphones are one of the most important accessories for commonly used electronic devices such as mobile phones. More and more people are used to using smart terminals such as mobile phones to make calls, listen to music or watch videos in noisy environments (such as on buses, trains or other means of transportation). In ...

AI Technical Summary

Problems solved by technology

[0004] Although the earphones have a certain effect of isolating noise, you can still hear external noise when listening to music or watching videos with the earphones, which seriously affects the sound quality of the earphones.

Moreover, when the user listens to music or watches videos in the noise, when the external noise is too loud, the music will be covered by the noise, so the user should increase the volume to listen to music, but excessively increasing the volume will cause hearing loss, and the mobile phone volume is too high. If it is high, the sound leaks from the earphones to the outside world, sometimes affecting people around

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