Research on mildew contamination affecting the sound quality of analog tapes

Since 1947, analog tape recording has become the dominant method of sound recording and has been widely used in music, cultural outreach, scientific research, and news gathering, producing a large number of important audio archives. However, due to the presence of adhesives, mildew often develops on the tape magnetic layer and edges, posing a serious threat to long-term preservation and sound quality. ATR-FTIR and SEM were used to characterize the chemical and physical properties of magnetic tap