Low Complexity 3D Audio Algorithms for Handheld Devices

International Conference
2006-09-02 22:36
Authors : Young-Cheol Park, Taik-sung Chio, Jae-woong Jung, Dae Hee Youn, Siwook Nam, Jungmin Song

Year : 2006

Publisher / Conference : The Proceedings of The AES 29th International Conference

In this paper, we present low-complexity 3D audio algorithms suitable for applications based on low-power and low-memory hardware. The algorithms include an artificial reverberator associated with a time-varying all-pass filter, IIR crosstalk cancelation filters implementing frequency warping, and a headphone externalization algorithm based on simplified head-related transfer functions (HRTF's). Performances and complexities of the presented algorithms are measured and compared with the conventional ones. 20 30% of memory reduction was gained using the time-varying artificial reverberator, and 50% of computational reduction was achieved using the IIR crosstalk cancellation filters. Finally, 80% of computational complexity and 50% of memory were saved by using the simplified externalization system.
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