Popular Singing in Chinese Original Musicals: An Acoustic Analysis of Vocal Characteristics and Emotional Expression

This study investigates the vocal characteristics of popular singing in Chinese original musicals, focusing on the differences in acoustic parameters between mixed voice and falsetto. Using acoustic analysis, the study systematically quantified the performance of the two different vocal styles in terms of pitch, resonance peaks and timbre, revealing the role ofpopular singing in emotional expression and artistic performance. It was found that the mixed voice possesses treble stability and dynamic expressiveness, and is suitable for expressing strong emotions, while the falsetto adapts to soft situations with its gentle timbre, giving the performance multi-layered emotional depth. By analysing the specific acoustic characteristics of popular singing in Chinese original musicals, this study provides a technical basis for its application in modern musical theatre, demonstrating the innovativeness of popular singing in enhancing emotional resonance and artistic expression. The results of the study not only provide new perspectives for vocal teaching and musical theatre performance practice, but also help to further enrich the vocal expression techniques of Chinese original musicals and bring more profound emotional experiences to the audience.