Loudspeaker sound chamber space expanding method and audio output device

Abstract

The invention relates to a loudspeaker sound chamber space expanding method and an audio output device. The audio frequency output device comprises a circuit board, a sound chamber cover, and a loudspeaker positioned in the sound chamber cover, wherein a shielding cover is arranged on the circuit board, and provided with at least two sound chamber holes; one of the sound chamber holes is positioned under the centre of the loudspeaker, and the rest sound chamber holes are positioned below sound outlet holes outside the centre of the loudspeaker; the diameter of the sound chamber hole is in accordance with the standard that an interference signal for attenuating an F frequency section radiates out of the shielding cover, wherein the F frequency section is the working frequency section of a component arranged outside the shielding cover. In the invention, the large space below the shielding cover is effectively utilized; the space in the shielding cover is combined with the space of the sound chamber for rationally utilizing, thus effectively increasing the space of the sound chamber of the loudspeaker and improving the volume and the sound quality of the audio output device. Meanwhile, the influence of the radiated interference of the components of a main board on the performance of a main antenna can be avoided well; and the radio-frequency interference can reach the standard.

Description

Technical field [0001] The invention relates to an audio output device, in particular to a method for enlarging the sound cavity space of a speaker and an audio output device designed by using the method. Background technique [0002] The appearance of mobile terminals has brought great convenience to people's lives. At the same time, people's requirements for mobile terminals are getting higher and higher. In the development process of mobile terminals, with the continuous increase and expansion of various functions and the pursuit of thinner and lighter mobile terminals by users, the internal space of mobile terminals has been occupied by various components, which has created a demand for space The sound cavity space of larger speakers is compressed. [0003] Since the internal circuit board of the mobile terminal is covered with various types of components, in order to protect the antenna of the mobile terminal from the interference of the radiation signal released by the comp...

AI Technical Summary

Problems solved by technology

However, in the design of mobile terminals such as mobile phones, in order to save the internal space of the mobile phone, it is often necessary to arrange the speaker above the shielding cover of the circuit board, that is to say, the shielding cover is placed in the sound cavity cover, so that the speaker's The sound cavity space becomes the space surrounded by the speaker and the shielding cover in the sound cavity cover, resulting in a greatly reduced sound cavity space

If the speaker does not have enough sound chambers, it will have a serious impact on the output sound size and quality

Images