Research of Acoustic Emission Signal Preprocessing and Application in Hearing Impaired

Acoustic emission method is used as a means of analysis of materials, constructions, productions control and diagnosis during operating time. It\´s important advantages over other control methods are that it only reacts upon upcoming really dangerous defects and its ability to scan large areas or the whole of product without scanning it by a transducer. The correlation and signal to noise ratio were evaluated by the algorithm based on frequency spectrum. In the article there are the results of program development for "Emiss-2" system communication and acoustic emission signals analyzing which is based on the earlier experimental data.