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Moving-coil loudspeaker structure and audio playing device

A moving coil loudspeaker and audio playback technology, applied in the field of loudspeakers, can solve the problems of infidelity of the sound of the loudspeaker, low distortion of the loudspeaker, increased distortion of the loudspeaker, etc., and achieve the effect of reducing the degree of distortion

Active Publication Date: 2016-05-04
GOERTEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The magnetic circuit system of a moving coil speaker is usually composed of permanent magnets. Since the magnetic field provided by the permanent magnet is not a uniform magnetic field, when the vibration amplitude of the voice coil is relatively small, the voice coil is in a relatively uniform area of ​​the magnetic field (that is, magnetic induction The area where the intensity changes relatively small), the degree of distortion of the speaker is relatively low; when the amplitude of the voice coil vibration is relatively large, the voice coil is in the non-uniform area of ​​the magnetic field (that is, the area where the magnetic induction intensity changes relatively large), the degree of distortion of the speaker will be Significantly raised, making the speaker sound unreliable

Method used

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  • Moving-coil loudspeaker structure and audio playing device

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Embodiment Construction

[0027] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

[0028] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses.

[0029] Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the description.

[0030] In all examples shown and discussed herein, any specific values ​​should be construed as exemplary only, and not as limitations. Therefore, other instances of the exemplary embodiment may have dif...

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Abstract

The invention provides a moving-coil loudspeaker structure which comprises a vibration assembly, a magnetic circuit assembly and a basin stand. The vibration assembly comprises a vibration film and a voice coil. The magnetic circuit assembly comprises a magnetic core, a first power-on coil surrounding the magnetic core and a second power-on coil surrounding the first power-on coil. A magnetic clearance is formed between the magnetic circuit assembly and the basin stand, and the voice oil is suspended in the magnetic clearance. The invention further provides an audio playing device which comprises the moving-coil loudspeaker structure, a direct-current power circuit and a rectifying circuit. The direct-current power circuit supplies direct currents with constant voltage to the first power-on coil. Audio signals are rectified into direct-current signals through the rectifying circuit to be input into the second power-on coil, and the rectifying circuit is configured to enable a magnetic field generated by the second power-on coil and a magnetic field generated by the first power-on coil to be consistent in direction. The moving-coil loudspeaker structure can be used for reducing distortion of a loudspeaker, and the distortion degree of the loudspeaker can be reduced through the audio playing device.

Description

technical field [0001] The present invention relates to a loudspeaker, more specifically, to a structure of a moving coil loudspeaker and an audio playback device. Background technique [0002] In the prior art, a moving coil speaker is generally composed of a vibration system, a magnetic circuit system, and a casing, and the vibration system includes a diaphragm and a voice coil. When the speaker is working, the voice coil that receives the audio signal will be subjected to the force of the magnetic field generated by the magnetic circuit system, making the voice coil vibrate up and down under the action of the magnetic field, thereby driving the diaphragm to produce sound. The magnetic circuit system of a moving coil speaker is usually composed of permanent magnets. Since the magnetic field provided by the permanent magnet is not a uniform magnetic field, when the vibration amplitude of the voice coil is relatively small, the voice coil is in a relatively uniform area of ​...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R9/06H04R9/02H04R3/00
CPCH04R3/00H04R9/025H04R9/06H04R2209/024
Inventor 韩丹杨赟李园园
Owner GOERTEK INC
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