Design of near field noise reduction system for printing press based on Noise Recognition Technology

Abstract

The near-field noise reduction system of printing press is designed based on the correlation principle of noise signal generation, the characteristics of noise signal and the algorithm of noise related knowledge. Through the analysis and comparison, two methods of segmented signal-to-noise ratio and waveform are selected as the objective method and subjective method to evaluate the algorithm. Considering the factor of time, aiming at the traditional printing press near-field spectrum subtraction, the traditional noise estimation method is used to estimate the minimum statistics and optimal smoothing noise of printing press near-field noise. According to the characteristics of spectrum subtraction, the noise processing method is realized. Finally, the simulation results show that the near-field noise reduction system based on noise recognition technology has higher effectiveness in the practical application process, and fully meets the research requirements.