Papers

Enhancing loudspeaker-based 3D audio with room modeling

International Conference
2006~2010
작성자
한혜원
작성일
2010-10-04 23:47
조회
1500
Authors : Myung-Suk Song, Cha Zhang, Dinei Florencio, Hong-Goo Kang

Year : 2010

Publisher / Conference : MMSP

For many years, spatial (3D) sound using headphones has been widely used in a number of applications. A rich spatial sensation is obtained by using head related transfer functions (HRTF) and playing the appropriate sound through headphones. In theory, loudspeaker audio systems would be capable of rendering 3D sound fields almost as rich as headphones, as long as the room impulse responses (RIRs) between the loudspeakers and the ears are known. In practice, however, obtaining these RIRs is hard, and the performance of loudspeaker based systems is far from perfect. New hope has been recently raised by a system that tracks the user's head position and orientation, and incorporates them into the RIRs estimates in real time. That system made two simplifying assumptions: it used generic HRTFs, and it ignored room reverberation. In this paper we tackle the second problem: we incorporate a room reverberation estimate into the RIRs. Note that this is a nontrivial task: RIRs vary significantly with the listener's positions, and even if one could measure them at a few points, they are notoriously hard to interpolate. Instead, we take an indirect approach: we model the room, and from that model we obtain an estimate of the main reflections. Position and characteristics of walls do not vary with the users' movement, yet they allow to quickly compute an estimate of the RIR for each new user position. Of course the key question is whether the estimates are good enough. We show an improvement in localization perception of up to 32% (i.e., reducing average error from 23.5° to 15.9°).
전체 360
46 International Conference Myung-Suk Song, Cha Zhang, Dinei Florencio, Hong-Goo Kang "Enhancing loudspeaker-based 3D audio with room modeling" in MMSP, 2010
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43 International Conference Myung-Suk Song , Cha Zhang, Dinei Florencio, Hong-Goo Kang "Personal 3D audio system with loudspeakers" in ICME, 2010
42 International Conference Se-Woon Jeon, Young-Cheol Park, Seok-Pil Lee, Dae Hee Youn "Robust Representation of Spatial Sound in Stereo-to-Multichannel Upmix" in 128th Convention of Audio Engineering Society, pp.7976, 2010
41 International Conference Se-Woon Jeon, Dongil Hyun, Jeongil Seo, Young-Cheol Park, Dae Hee Youn "Enhancement of principal to ambient energy ratio for PCA-based parametric audio coding" in ICASSP, 2010
40 International Conference Ho Seon Shin, Min-Seok Choi, Taesu Kim, Hong-Goo Kang "Binaural loudness based speech reinforcement with a closed-form solution" in ICASSP, 2010
39 International Conference SoonHo Beak, Myung-Suk Song, Seok-Pil Lee, Hong-Goo Kang "Speaker Array System Based on Equalization Method with a Quiet Zone" in 127th Convention of Audio Engineering Society, pp.7951, 2009
38 International Conference Dongil Hyun, Jeongil Seo, Youngcheol Park, Daehee Youn "Robust Interchannel Correlation (ICC) Estimation Using Constant Interchannel Time Difference (ICTD) Compensation" in 127th Convention of Audio Engineering Society, pp.7934, 2009
37 International Conference Jae-Mo Yang, Chang-Heon Lee, Hong-Goo Kang "A robust time difference of arrival estimator in reverberant environments" in EUSIPCO, 2009