Engine noise reduction controller

The invention relates to an engine noise reduction controller and belongs to the technical field of automobile electronics. The engine noise reduction controller comprises a data acquisition module for inputting an engine noise signal, an audio decoding module connected with the data acquisition module, a DSP (digital signal processor) data processing module connected with the audio decoding module, a power amplification module which is connected with the audio decoding module and can be used for outputting a reverse phase modulation output signal to counteract engine noise and an engine rotating speed regulation module which is connected with the DSP data processing module and can be used for receiving an engine rotating speed signal. According to the engine noise reduction controller, a DSP is used for acquiring noise signals and analyzing the signals to output reverse sound waves equal to external noise and neutralize the noise, so that a noise reduction effect is achieved; by the mode, the mass of a whole automobile can be reduced; furthermore, the low-frequency noise with higher injury to a human body can be alleviated, and the noise reduction effect is good; therefore, an overall low-noise automobile can be implemented.