Digital active sounder with DSP (Digital Signal Processor) preprocessing function

The utility model discloses a digital active sounder with a DSP (Digital Signal Processor) preprocessing function, which comprises a DSP processing unit, wherein the DSP processing unit comprises an A/D (Analog-to-Digital) converting interface, an I/O (Input/Output) interface and a D/A (Digital-to-Analog) converting interface, the input end of the A/D converting interface is connected with an audio input unit, the input end of the I/O interface is connected with a function selecting switch, the output end of the D/A converting interface is connected with a power amplifying unit, the output end of the power amplifying unit is also connected with a horn unit, and the digital active sounder also comprises a power-supply unit for supplying a power supply for the digital active sounder. Through a function converting switch, a user can rapidly select a required sound-effect mode without complicated professional knowledge of audio debugging; and a switching power supply is adopted as the power supply of the digital active sounder, the DSP processing unit is used as a preprocessing level, and the whole device has a small volume and a light weight. The digital active sounder can be widely applied to various entertainment places or conference fields.