Classic Vocal Performance Training Through C-VaC Method: Study of Core Muscle Stability Warm-Up Techniques via Computer-Aided Analysis.

Vocal warm-up is essential for achieving optimal vocal performance; however, traditional methods often neglect the role of core muscle stability. This study presents the Combined Vocal and Core Muscle Stability Warm-Up Method (C-VaC), which integrates core stability training with vocal exercises to improve vocal performance. The effectiveness of the C-VaC method was assessed among soprano majors at various stages using computer-assisted audio analysis for objective measurement. Comparative analyses of pitch accuracy, jitter, shimmer, and singing power ratio were conducted across different groups of singers undergoing both traditional and C-VaC warm-ups. The results indicate that the C-VaC method significantly enhances pitch accuracy and reduces acoustic perturbations. These findings provide valuable insights into optimizing warm-up protocols and propose a novel approach for improving vocal performance.