It can improve the real-time of APF effectively by using backward interpolation to predict harmonic. The simulation results show the effectiveness of this algorithm.

提出用改进后的二次插值的外插值法对谐波进行预测，可以有效地提高APF的实时性，仿真结果表明了这种算法的有效性。

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Then, the data parallel implementation scheme of zero-order interpolation and first-order interpolation of backward mapping are discussed.

几何操作反向映射的零阶内插与一阶内插的数据并行实现方法；

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