The paper presents the comparative analysis results of the acoustic emission signals generated by various forms of partial discharges occurring in multisource systems.Modern methods of the signal digital processing: a short-time Fourier transform and continuous and discrete wavelet transforms were applied for the assessment of the results in the time-frequency domain.The acoustic emission signals generated by partial discharges were registered with a WD AH17 contact transducer by the Physical Acoustics Corporation placed on the external part of the tub.
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A. Cichoń (2009) studied this question.