| 摘要 |
A look-up table which is required during looking up table for data transferring and a method for looking up table are provided. The method reduces the size of the look-up table used in the method for looking up table by simplifying the calculations. A reasonable error range is obtained for the required look-up table by adjusting appropriate modifiers. The method can be applied in the method for looking up table similar to the <maths id="MATH-US-00001" num="1"> <MATH OVERFLOW="SCROLL"> <MROW> <MROW> <MI>Q</MI> <MO></MO> <MROW> <MO>(</MO> <MI>x</MI> <MO>)</MO> </MROW> </MROW> <MO>=</MO> <MSUP> <MI>x</MI> <MFRAC> <MI>B</MI> <MI>A</MI> </MFRAC> </MSUP> </MROW> </MATH> </MATHS> calculation in the digital signal coder/decoder (CODEC), where both A and B are integers, and the calculation is more efficient if B/A is close to 1 or smaller than 1.
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