Loudspeaker box

Abstract

The invention provides a loudspeaker box. The loudspeaker box comprises an upper shell, a lower shell which is matched with the upper shell to form an accommodating space, and a loudspeaker monomer which is accommodated in the accommodating space and divides the accommodating space into a front cavity and a rear cavity. The loudspeaker monomer comprises a vibrating diaphragm used for vibration sounding, the vibrating diaphragm and the upper shell are arranged at intervals to form a front acoustic cavity, and a sound outlet channel communicating the front sound cavity with the outside is formedin the upper shell; the front sound cavity and the sound outlet channel form a front cavity of the loudspeaker box, the upper shell comprises a top wall and a supporting wall which extends from the top wall to the lower shell and fixes the loudspeaker monomer, the loudspeaker box further comprises a partition wall which extends from the top wall to the lower shell and a cover plate which extendsfrom the partition wall to the supporting wall, at least two resonant cavities which are arranged at intervals are defined by the partition wall, the cover plate and the supporting wall, and the resonant cavities are communicated with the front cavity. According to the loudspeaker box provided by the invention, the high-frequency resonance peak value and the sensitivity can be effectively reduced,and the acoustic performance of the loudspeaker box is improved.

Description

【Technical field】 [0001] The invention relates to the field of electroacoustic conversion, in particular to a speaker box. 【Background technique】 [0002] With the rapid development of mobile communication technology in recent years, consumers are increasingly using mobile communication devices with voice functions, such as portable phones, handheld game consoles and laptop computers. As a voice playback device, the speaker box is designed to directly affect the voice performance of mobile communication equipment products. In order to meet the market's demand for thinner and higher sound quality, higher requirements are put forward for the design of the speaker box. [0003] In the related art, the speaker box includes an upper case, a lower case and a speaker unit, and the speaker unit includes a diaphragm, and the diaphragm and the upper case are separated to form a front acoustic cavity, and the sound channel is formed with the side wall of the upper case, the front soun...

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Problems solved by technology

[0003] In the related art, the speaker box includes an upper case, a lower case and a speaker unit, and the speaker unit includes a diaphragm, and the diaphragm and the upper case are separated to form a front acoustic cavity, and the sound channel is formed with the side wall of the upper case, the front sound cavity and the sound output. The channel constitutes the front cavity, and such a structure will produce a resonance peak in the high-frequency frequency response; with the popularization of mobile phone stereo applications, the speaker no longer pursues an excessively high high-frequency frequency response, and the high-frequency frequency response (especially 4000Hz to 6000Hz) is too high High will lead to harsh sound, sharp labial-tooth sound and other poor sound quality problems

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