Robust 3D Sound based on Common-pole Crosstalk Canceller
| Autor: | C. R. Huang, 黃俊榮 |
|---|---|
| Rok vydání: | 2006 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 95 There are more and more virtual reality applications in the modern multimedia systems. Therefore, the 3D sound technique becomes more important. We will use a loudspeaker pair to generate the 3D sound. However, the most critical problem is the crosstalk disturbance. To overcome this problem, we investigate both FIR and IIR forms of crosstalk cancellers. In both forms, we propose matrix inverse and direct LSE methods to implement the filters. In matrix-inverse method, to avoid the un-stability, we propose to minimize the ratio error. In direct LSE IIR design, to avoid the nonlinearity, the common-pole structure is proposed. Then, we consider another problem, the robustness of the crosstalk canceller. We know that if the crosstalk canceller is fixed, and the received signals may be very different to the signals we want when the head moves. Therefore, we propose a method by using the region-equalized concept to reduce the effect of head movements. Finally, Error energy (EN), crosstalk suppression factor (CSF) and equalization improvement factor (EIF) are used to quantify the performance of crosstalk cancellers. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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