| 摘要 |
<p>An obtaining filter method and a filter which is used in a visual surround sound system are provided. The method comprises: obtaining the filter functions in the visual surround sound system, the filter functions being represented by the Infinite Impulse Response Filter IIR functions, wherein the sound transmission characters for different persons and different directions are represented by the different IIR functions; obtaining the regulated IIR functions on the basis of the IIR functions, wherein in the regulated IIR functions, the IIR functions for representing the same person in the different directions has the same apices and the IIR functions for representing the different persons in the same direction has the same zeros; obtaining regulated filter functions of the visual surround sound system on the basis of the regulated IIR function; and obtaining the corresponding filter on the basis of the regulated filter functions. By utilizing the method and the filter, the complexity of the filter design can be reduced.</p> |
