Title :
Improved 3D sound using wavelets
Author :
Chon, U.P. ; Kim, I.H. ; Kim, K.N.
Author_Institution :
Sch. of Comput. Eng. & Inf. Technol., Ulsan Univ., South Korea
fDate :
26 Jun-3 Jul 2001
Abstract :
The techniques of an efficient 3-D sound system based on the psychoacoustics of spatial hearing with multimedia or virtual reality have been developed by many researchers. In this paper, we propose an idea for an improved 3-D sound system using conventional stereo headphones to obtain a better sound diffusion from the mono-sound recorded in an anechoic chamber. We use the HRTF (Head Related Transfer Function) for the sound localization and the wavelet filter bank with time delay for the sound diffusion. We investigate the effects of the 3-D sound depending on the length of time delay at the lowest frequency band. Also the correlation coefficient of the signals between the left channel and the right channel is measured to identify the sound diffusion
Keywords :
acoustic signal processing; audio acoustics; audio signal processing; delays; digital filters; sound reproduction; transfer functions; wavelet transforms; 3D sound system; HRTF; conventional stereo headphones; correlation coefficient; head related transfer function; psychoacoustics; sound diffusion; sound localization; spatial hearing; time delay; wavelet filter bank; Anechoic chambers; Audio systems; Auditory system; Delay effects; Headphones; Magnetic heads; Multimedia systems; Psychoacoustics; Transfer functions; Virtual reality;
Conference_Titel :
Science and Technology, 2001. KORUS '01. Proceedings. The Fifth Russian-Korean International Symposium on
Conference_Location :
Tomsk
Print_ISBN :
0-7803-7008-2
DOI :
10.1109/KORUS.2001.975053
