This paper introduces the basic knowledge of audio signal, as well as the basic principles of linear prediction, makes a detailed description about a least square AR (LSAR) repairing algorithm based on AR model and the theory of minimum mean square error, and investigates on impulse noise cancellation and clipping restoration of the multi-module noise processing platform in audio signal.

With the test of pulse interference being used in Yaoqiao Coal Mine, the aquiferous hydraulic relationship between the limestone of Ordovician and 4 limestone of Taiyuan group on both sides of Yuantang fault at the boundary of the mine is found out as well as the scope of the water conduction section and the water insulation section that provide reliable basis for fault prevention and water-proof.

By analyzing time-frequency characteristics of the pulse interference in the frequency monitor system (FMS) of high frequency radar, this paper gives a method to eliminate its effects.

The paper gives a special analysis of the influence caused by pulse interferences as concerned with NGS theory model.

The antijamming performance of OFDM(Orthogonal Frequency Division Multiplexing)with various jamming types was analyzed,such as broadband jamming,pulse jamming,partial-band jamming,multitone jamming and so on,and the performances with coding and interleaving were also given.

A practical software method of filtering out pulse disturbing signal based on error theory and PLC s programmed instruction is presented,the software echelon chart of FX0N series is workouted and ensuring the reliability of PLC data sampling ,improving control precision of system.