speaker module

Abstract

The invention discloses a loudspeaker module, which includes a module casing and a loudspeaker unit, the loudspeaker unit includes a vibration system; the vibration system includes a diaphragm, and the diaphragm includes a fixing part, a ring part and a central part; the central part is Planar structure; the module casing corresponding to the diaphragm includes a lower surface near the diaphragm side and an upper surface far away from the diaphragm side; the lower surface of the module casing facing the central part is provided with a bulge, folded A height difference is formed between the lower surface corresponding to the ring portion and the lower surface at the location of the raised portion. The loudspeaker module provided by the present invention reduces the distance between the central part of the diaphragm and the corresponding inner surface of the module casing directly above it through the structural design of the bulge on the module casing. Under the premise of not affecting the low-frequency loudness of the speaker, the Fh of the speaker's frequency response curve can be extended to the high-frequency direction, which broadens the frequency bandwidth of the speaker's frequency response curve, and the high-frequency loudness is also increased.

Description

technical field [0001] The invention relates to the field of electroacoustic technology. More specifically, it relates to a speaker module. Background technique [0002] The speaker module is an important acoustic device of portable electronic equipment. It is used to complete the conversion between electrical signals and acoustic signals. It is an energy conversion device. Due to many disadvantages in actual use, side sound has gradually become the mainstream way of speaker module design. A general speaker module includes a module casing and a speaker unit accommodated in the module casing. The speaker unit divides the cavity surrounded by the module casing into a front cavity and a rear cavity. Wherein the side wall of the module shell is provided with the side sound outlet of the speaker module, and the side sound outlet communicates with the upstream cavity facing the speaker unit through the sound channel; the sound generated by the vibration system of the speaker uni...

AI Technical Summary

Problems solved by technology

[0003] In the existing side-firing speaker modules, the module shell directly above the speaker single diaphragm is mostly a flat structure. In order to obtain greater loudness, the height of the sound channel of the side-firing speaker module needs to be The bigger the better, but the larger the sound channel height must make the cavity space between the speaker single diaphragm and the inner surface of the corresponding module shell directly above it, resulting in a higher frequency response curve Fh is smaller and the bandwidth is narrower, and the high-frequency loudness is limited

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