Miniature loudspeaker module group and method for enhancing frequency response of miniature loudspeaker module group, and electronic device

Abstract

The invention discloses a method for enhancing frequency response of a miniature loudspeaker module group, and the miniature loudspeaker module group and an electronic device. The method is used for enhancing the frequency response of the miniature loudspeaker module group. The method for enhancing the frequency response of the miniature loudspeaker module group comprises that: an inverter tube is additionally arranged in a rear cavity of the miniature loudspeaker module group so that a second sound source is formed in the inverter tube when an active sound source works, wherein the second sound source and the active sound source radiate jointly; and according to amplitude characteristics of a vibrating diaphragm of the active sound source of the miniature loudspeaker module group with the additionally arranged inverter tube, matching enhancement processing is performed on an input signal of the active sound source. According to the technical scheme, the frequency response of the whole miniature loudspeaker module group is enhanced at a low frequency band below F0 due to the additionally arranged inverter tube, and the matching signal enhancement processing is further performed according to the amplitude characteristics of the active sound source so that the frequency response of the whole frequency band of the miniature loudspeaker module group is greatly enhanced.

Description

technical field [0001] The invention relates to the field of communication acoustics, in particular to a micro-speaker module, a method for enhancing the frequency response of the micro-speaker module, and electronic equipment. Background technique [0002] At present, in the field of communication acoustics, especially in the field of mobile terminal equipment (such as mobile phones, PADs, laptops, etc.), most of the micro dynamic speaker modules adopt a closed rear cavity design, and the acoustic drive components are wrapped by the shell , the rear cavity of the entire speaker module is closed. Due to the limitation of the size of the rear cavity and the volume of the product, the low-frequency resonance point F0 of the micro-speaker module is high, which cannot provide a low-frequency dive low enough. Related equalizers (EQ, equalizer) and bass enhancement algorithms are based on this kind of closed box micro-speaker design. In the frequency band below F0, due to the lim...

AI Technical Summary

Problems solved by technology

Due to the limitation of the size of the rear cavity and the volume of the product, the low-frequency resonance point F0 of the micro speaker module is high, which cannot provide a low-frequency dive low enough

Related equalizers (EQ, equalizer) and bass enhancement algorithms are based on this kind of closed box micro-speaker design. In the frequency band below F0, due to the limitation of the vibration amplitude of the existing diaphragm and the size of the components, it is impossible to achieve a real physical sense. Bass boosted and not loud enough

[0003] Furthermore, generally speaking, the use of enhancement algorithms in micro-speaker modules will cause the temperature of the voice coil and the rear cavity to rise when the amplitude of the electrical signal is amplified, which will bring hidden dangers to the reliability of the system.

The existing closed design usually only has a small sound leakage port, which cannot play the role of heat dissipation. The heat is generally exported through a large metal basin frame or heat conduction sheet, and the use of this metal heat dissipation method is generally harmful to the peripheral circuits of the equipment, especially the antenna. design is harmful

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