Real-time Implementation of Virtual Surround System using AC-3

M.-H. Park and S.-I. Choi (Korea)


Communication Systems, Multimedia Communications, HRTF, Virtual Surround


Many researches have been developed in the field of virtual surround sound processing algorithm and gradually applied to multimedia device providing game, multi-media content, and virtual reality. To achieve virtual surround sound effect, many applications adopt head-related transfer functions (HRTFs), well known for excellent sound localization effect. However usual convolution method using transfer function and input signal needs high CPU complexity and that has been excess burden to implement real-time application. This paper presents our Virtual Surround Sound System using AC-3 (Dolby-Digital) Audio Codec and Complexity Reduction technique to ease heavy complexity of HRTF processing and description about real-time implementation.

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