Loudspeaker module and intelligent wearable device

Abstract

The invention discloses a loudspeaker module and an intelligent wearable device. The loudspeaker module comprises a module shell, a loudspeaker single body is contained in the module shell, an inner cavity of the loudspeaker module is divided into a front sound cavity and a rear sound cavity by the loudspeaker single body, a sound leakage hole communicating the rear sound cavity with the outside and a sound outlet hole communicating the front sound cavity with the outside are formed in the module shell, and the sound outlet hole is formed in the first side wall of the front sound cavity. The distance from the center position of the loudspeaker monomer to the side wall of the second side opposite to the sound outlet hole is not less than 8.5 mm, the loudspeaker module further comprises an auxiliary sound hole, the auxiliary sound hole is communicated with one side, opposite to the sound outlet hole, of the front sound cavity, the auxiliary sound hole is arranged adjacent to the sound leakage hole, and the auxiliary sound hole and the sound outlet hole respectively form a dipole structure with the sound leakage hole. According to the technical scheme, the problem of standing wave interference can be solved, the problem of sound leakage is improved, and the sound production effect of the loudspeaker module is improved.

Description

technical field [0001] The present application relates to the technical field of electro-acoustic devices, and in particular, to a speaker module and a smart wearable device. Background technique [0002] With the popularization and popularization of smart wearable devices, more and more smart wearable devices incorporate acoustic functions. For example, wearable audio devices such as audio glasses and portable headsets, compared with traditional headphones, use near-ear and out-amplification technology, which will not cause auditory fatigue or damage to hearing after listening for a long time. [0003] With the continuous development of smart wearable devices towards lightness and thinness, the speaker modules in smart wearable devices are mostly set to a side-outlet structure, and part of the sound waves cannot be directly radiated from the sound-outlet holes when the speaker module with a side-outlet structure works. When going out, this part of the sound wave can be rad...

AI Technical Summary

Problems solved by technology

[0003] With the continuous development of smart wearable devices in the direction of thinner and lighter, the speaker modules installed in smart wearable devices are mostly set up with a side sound structure. When the speaker module with a side sound structure is working, part of the sound waves cannot be directly radiated from the sound hole. Out, this part of the sound wave can only be radiated from the sound hole after being reflected by the side wall of the front acoustic cavity of the speaker module. The sound pressure decreases sharply, and the sound sensitivity curve of the speaker module has a deep valley near this frequency point, which seriously affects the sound sensitivity of the speaker module in this frequency band and affects the audio effect of wearable devices.

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