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Measurement of AC Electric Arc Discharge Acoustic Spectrum

In this work measurements of atmospheric AC electric arc discharge acoustic spectrum have been performed. Electric and acoustic parameters of discharge are recorder simultaneously. Correlation of acoustic spectrum to electric voltage, current and power has been estimated. Analysis of harmonic spectrums of electric and acoustic discharge dynamic parameters has been performed. Overlapping of electric and acoustic results is presented in the frequency domain. There is a good agreement between electric power spectrum and acoustic power spectrum of the AC arc discharge.