CULTIVATION OF PROFESSIONAL ELECTROACOUSTIC TALENT USING CDIO INNOVATIVE TEACHING METHODS

The purpose of this study was to apply Conceive-Design-Implement-Operate (CDIO) innovative teaching methods combined with Project Based Learning (PBL) to the cultivation of talent with the professional and technical knowledge required by the electroacoustic industry. The study period was three years, with the first and second semesters of each academic year considered one research cycle. The research subjects were first-year students in Feng Chia University's Master's Program of Electro-acoustics. There were a total of 34 students during the three years, working in teams of 3-4 students each. Headsets served as the research subject. First, students became aware of the development of electroacoustic market trends and the history of headphone brands (Conceive). Then, they learned how to construct the geometry of the components using CAD and simulated the acoustic radiation characteristics of headphones with equivalent circuit model (ECM) (Design). Subsequently, they remade headphones using CAD and 3D printer (Implementation). Finally, they compared the sound pressure characteristics of the physical and simulated earphones and optimized the design (Operation and Optimization). Their learning effectiveness was analyzed using pre-test and post-test questionnaires and rubrics. Results showed that learning effectiveness increased significantly by 65.2% following the introduction of the proposed innovative teaching model. The most significant results were in the Operation and Optimization stages, reaching more than 70.2%. This indicated that learning processes combined with PBL and hands-on practice can effectively improve students’ motivation to learn.