https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/zero-padding-and-window-function-of-fft/m-p/1141685#M26342 <P>i'm trying to do match filter with mkl. Zero padding and window function are two common tricks. I used to creating a new pointer and writing&nbsp;a loop to do the two process. But I find it very inefficient. The time of zeros padding and adding window function is three times as long as FFT (multiple kernel). So I want to know is there any efficient ways to do zero padding and adding window function?</P><P>Thank you!</P> Sat, 14 Mar 2020 15:18:52 GMT zhao__chuncheng 2020-03-14T15:18:52Z https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/zero-padding-and-window-function-of-fft/m-p/1141685#M26342 <P>i'm trying to do match filter with mkl. Zero padding and window function are two common tricks. I used to creating a new pointer and writing&nbsp;a loop to do the two process. But I find it very inefficient. The time of zeros padding and adding window function is three times as long as FFT (multiple kernel). So I want to know is there any efficient ways to do zero padding and adding window function?</P><P>Thank you!</P> Sat, 14 Mar 2020 15:18:52 GMT https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/zero-padding-and-window-function-of-fft/m-p/1141685#M26342 zhao__chuncheng 2020-03-14T15:18:52Z