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Dual impedance earphone

A dual-impedance, earphone technology, applied in the direction of earpieces/headphone accessories, etc., can solve the problems of poor sound quality, low signal-to-noise ratio of audio signals, inconvenient to carry earphone products, etc., and achieves the improvement of signal fidelity and signal-to-noise ratio. Effect

Inactive Publication Date: 2015-11-25
深圳第一蓝筹科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the deficiencies of the prior art, the present invention aims to provide a dual-impedance earphone, which not only solves the problems of low signal-to-noise ratio and poor sound quality of audio signal output, but also solves the problem of inconvenient portability of earphone products

Method used

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  • Dual impedance earphone
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Embodiment Construction

[0019] The following will be combined with Figures 1 to 3 The present invention is further described, but it should not be used to limit the protection scope of the present invention. For the convenience of description and understanding of the technical solution of the present invention, the orientation words used in the following description are all subject to the orientation shown in the drawings.

[0020] Such as figure 1 As shown, the dual-impedance earphone of this embodiment includes a speaker, a switch conversion module, an audio signal input module and an audio power amplifier module. The audio signal input module is respectively connected with the audio power amplifier module and the switch conversion module, and the audio power amplifier module is connected with the loudspeaker through the switch conversion module.

[0021] Such as figure 2 As shown, the speaker voice coil is made of two sets of voice coil enameled wires wound in a double-in and double-out manne...

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Abstract

The present invention relates to an acoustic design of an earphone horn and particularly relates to a dual impedance earphone. When a voice coil of the earphone horn is made, an enamelled wire of the voice coil wire is designed in a double charge-discharge manner, the outlet direction of a lead of the voice coil forms 180 degrees with the horizontal direction, and the horn is dual impedance. In the earphone, two groups of voice coils are converted into a parallel or serial state through a switch conversion module, at the parallel state, namely the voice coils are low impedance, an audio signal directly drives the horn to sound; and at the serial state, namely the voice coils are high impedance, the audio signal drives the horn to sound after being amplified by an audio power amplification module, at this time, the signal to noise ratio of the audio signal is twice larger than that of at the low impedance, and the signal fidelity is also greatly improved.

Description

technical field [0001] The invention relates to the acoustic design of earphone speakers, in particular to a dual-impedance earphone. Background technique [0002] At present, the impedance of earphone products sold on the market is mostly concentrated in 16Ω, 32Ω, and the impedance is low. Although the general mobile audio equipment is easy to drive, the signal-to-noise ratio of the audio signal output is low, the fidelity of the music signal is poor, and the audio signal The signal-to-noise ratio is proportional to the output impedance, the lower the impedance, the lower the signal-to-noise ratio; the higher the impedance, the higher the signal-to-noise ratio. [0003] According to Eugene's law, under the premise that the output signal amplitude of the audio playback device is constant, the impedance of the earphone directly affects the sensitivity of the speaker output sound signal. When the impedance is low, the output sensitivity is high, and the earphone is easy to dr...

Claims

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Application Information

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IPC IPC(8): H04R1/10
Inventor 赵永蛟
Owner 深圳第一蓝筹科技有限公司
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