Composite structures (speech sciences) is a research concept within speech science that applies principles and methodologies from structural engineering and mechanics modeling to analyze or simulate the physical structures involved in speech production or perception. It specifically conceptualizes biological components, such as the vocal folds or vocal tract walls, as analogous to engineered composite structures, considering their heterogeneous material properties and layered organization. This approach facilitates the biomechanical modeling of these structures to understand their dynamic behavior under physiological forces and predict their contribution to acoustic phenomena, thereby integrating structural mechanics with acoustic analysis in the study of speech.