Sound cavity device and mobile terminal

Abstract

The invention discloses a sound cavity device and a mobile terminal. The sound cavity device comprises a cavity and a loudspeaker, wherein the cavity is provided with a sound outlet hole; the loudspeaker is positioned in the cavity; a sound suction structure is arranged on the inner wall of the cavity. The sound cavity device can meet the acoustic performance requirement of the small-dimension cavity design. For a conventional sound box using the sound cavity device, the acoustic performance and the portability can be improved at the same time under the condition of size reduction.

Description

technical field [0001] The present invention relates to the field of sound chamber technology, in particular to a sound chamber device and a mobile terminal. Background technique [0002] Existing mobile terminals, such as mobile phones, are basically equipped with sound cavity devices for playing sound. The sound cavity devices of existing mobile phones generally use ordinary materials and smooth inner walls or box structures with integrated speakers and cavities. , because the music sound in the low-frequency part has a great influence on the sound quality, the lower the low-frequency resonance point, the more pleasing the subjective sound effect, but the bass effect of the mobile phone with the above structure is difficult to be improved from the later stage. Specifically, affected by the size of the mobile phone, the space reserved for the sound chamber device is getting smaller and smaller. The smaller the cavity, the higher the low-frequency resonance point, the worse ...

AI Technical Summary

Problems solved by technology

[0002] Existing mobile terminals, such as mobile phones, are basically equipped with sound cavity devices for playing sound. The sound cavity devices of existing mobile phones generally use ordinary materials and smooth inner walls or box structures with integrated speakers and cavities. , because the music sound in the low-frequency part has a great influence on the sound quality, the lower the low-frequency resonance point, the more pleasing the subjective sound effect, and the bass effect of the mobile phone with the above structure is difficult to be improved from the later stage

Specifically, affected by the size of the mobile phone, the space reserved for the sound chamber device is getting smaller and smaller. The smaller the cavity, the higher the low-frequency resonance point, the worse the hearing of the mobile phone, the narrower the frequency band, and the lower the sound pressure level. It will be limited. If you want to increase the volume, you need an additional power amplifier to support it, which not only increases the cost but also makes it difficult to improve the sound effect. Therefore, the design of the sound cavity device of the mobile terminal has put forward higher and higher requirements.

[0003] For a traditional speaker, its volume is larger than that of a mobile phone. The cavity of the speaker can accommodate devices such as inverter tubes or resonant basins to improve the low-frequency effect of the cavity. However, due to its large size, it is less portable.

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