Evaluation of the acoustic performance of a novelty cathodic

with and without cathodic protection by an impressed current， the harmonic content degradation of a guitar string subjected to different corrosion stages by artificial human sweat， was studied. String corrosion is characterised by not only the electrochemical technique of polarisation resistance， This work was conducted to establish the efficiency of an impressed current cathodic protection system for musical instruments' steel strings in protecting them from corrosion caused by human sweat. To conduct this research， but also by weight loss by gravimetric measurements and FESEM microscopy. From the correlation between the acoustic and electrochemical results， it can be concluded that harmonic content degradation of guitar strings increases corrosion but is less significant in the strings protected by impressed current. ，。