An efficient 3D sound using head and pinna models

An efficient 3D sound system has been developed by using head and pinna models. The head model is to realize a head shadow effect which is analyzed by the interaural time difference and interaural intensity difference. In order to effectively model an ear's shape, the pinna mesh structure is constructed to physically explore sound reflection. The seven possible polygon surfaces of this pinna mesh structure, which can provide the first reflective sound waves into the eardrums, are analyzed for the delays and intensities of reflective sounds. Additionally, the parameters of our models can be adjusted to fit the characteristics of an individual listener.