US Patent 10299030 Speaker module with sealed cavity and a communicating hole

Provided is a speaker module, comprising a sound passage of a front cavity, wherein the sound passage is defined by a speaker unit, a housing and a sound hole provided on the housing, wherein the speaker module further comprises a sealed cavity and a communication hole, wherein the sealed cavity is provided on a side wall of the sound passage of the front cavity, and the sealed cavity is in communication with the sound passage of the front cavity via the communication hole. By means of the present invention, an SPL peak at Fh and harmonic distortion caused by front cavity resonance can be reduced, so that the acoustic performance of a speaker is enhanced, and the sound quality is improved.