一种任意窗函数的复数调制重叠变换的快速算法
doi: 10.3724/SP.J.1146.2009.00204
New Fast Algorithm for Modulated Complex Lapped Transform with Arbitrary Windowing Function
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摘要: 该文提出了一种任意窗函数的复数调制重叠变换(MCLT)的快速计算方法。针对输入信号长度为2M 的MCLT，该算法将其转化为长度为2M的II型离散 Hartley 变换，然后对后者运用快速算法。与现有算法相比，该方法能够达到最少的算术运算量。Abstract: A new algorithm for efficient computation of the Modulated Complex Lapped Transform (MCLT) with arbitrary windowing function is presented. For the MCLT of length-2M input data sequence, the proposed method is based on computing a length-2M type-II generalized discrete Hartley transform. Comparison with existing algorithms shows that the proposed method achieves the minimal number of arithmetic operations.
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