Mems digital loudspeaker system and working method thereof

Abstract

The invention discloses a mems digital loudspeaker system and a working method thereof. The mems digital loudspeaker system comprises a DSP unit, a switching circuit, a driving unit and a mems loudspeaker array unit, wherein the DSP unit is provided with a digital audio signal and analog audio signal input port and eight digital signal output ports; the switching circuit and driving unit is composed of eight independent driving units; and the mems loudspeaker array unit is composed of 255 array elements. By arranging the DSP unit, the eight driving units and the mems loudspeaker array, very strong directional sound is generated, sound distortion can be effectively reduced, the DSP has a digital signal processing algorithm for audio to eliminate harmonic interference, and each driving unitis internally provided with a corresponding matching circuit to adjust sound pressure, so that the sound distortion is reduced, and by virtue of the high directivity of the ultrasonic waves, a sound directional propagation process is realized.

Description

technical field [0001] The invention relates to the technical field of loudspeaker systems, in particular to a mems digital loudspeaker system and a working method thereof. Background technique [0002] The speaker is an electroacoustic transducer. With the development of technology, mems speakers are gradually applied to electronic products. mems is the abbreviation of Micro-Electro-Mechanical System, that is, micro-electromechanical system. The mems speaker has the advantages of low power consumption, small size, small size and good consistency, and is the development direction of the speaker field. [0003] At present, the speakers on the moving iron market are usually moving coil speaker, piezoelectric speaker and electrostatic speaker. However, since the radiation sound pressure of the mems speaker is lower than that of the traditional speaker, the emission sound pressure sensitivity of the existing mems speaker cannot fully meet the practical requirements. On the oth...

AI Technical Summary

Problems solved by technology

However, since the radiation sound pressure of mems speakers is lower than that of traditional speakers, the emission sound pressure sensitivity of existing mems speakers cannot fully meet the practical needs.

On the other hand, due to the problems of loud sound and poor directivity of existing traditional loudspeakers, the privacy of traditional loudspeakers is poor during use.

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