Title :
An efficient 3D sound using head and pinna models
Author :
Chang, Cheng-Tu ; Chen, Oscal T C
Author_Institution :
Dept. of Electr. Eng., Nat. Chung Cheng Univ., Chia-Yi, Taiwan
Abstract :
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
Keywords :
acoustic signal processing; acoustic wave reflection; audio acoustics; audio systems; physiological models; transfer functions; 3D sound system; delays; head model; head shadow effect; head-related transfer function; interaural intensity difference; interaural time difference; outer ear shape; pinna mesh structure; pinna model; polygon surfaces; reflective sounds; sound reflection; Acoustic measurements; Acoustic propagation; Acoustic reflection; Ear; Humans; Psychoacoustic models; Psychology; Surface fitting; Surface waves; Torso;
Conference_Titel :
Circuits and Systems, 1998. IEEE APCCAS 1998. The 1998 IEEE Asia-Pacific Conference on
Conference_Location :
Chiangmai
Print_ISBN :
0-7803-5146-0
DOI :
10.1109/APCCAS.1998.743801
