https://community.intel.com/t5/Intel-Integrated-Performance/Inverse-Fourier-Transform/m-p/1017170#M23475 <P>Hello,</P> <P>I am a bit struggling to find function that would allow me to perform Inverse Discrete Fourier transform. I am using Intel IPP 7.1.</P> <P>I performed FFT operation with IPP_FFT_NODIV_BY_ANY parameter,&nbsp;ippsFFTFwd_CToC_64fc function, how can I inverse it?</P> <P>&nbsp;</P> Wed, 27 May 2015 01:17:35 GMT Kamil_K_ 2015-05-27T01:17:35Z https://community.intel.com/t5/Intel-Integrated-Performance/Inverse-Fourier-Transform/m-p/1017170#M23475 <P>Hello,</P> <P>I am a bit struggling to find function that would allow me to perform Inverse Discrete Fourier transform. I am using Intel IPP 7.1.</P> <P>I performed FFT operation with IPP_FFT_NODIV_BY_ANY parameter,&nbsp;ippsFFTFwd_CToC_64fc function, how can I inverse it?</P> <P>&nbsp;</P> Wed, 27 May 2015 01:17:35 GMT https://community.intel.com/t5/Intel-Integrated-Performance/Inverse-Fourier-Transform/m-p/1017170#M23475 Kamil_K_ 2015-05-27T01:17:35Z https://community.intel.com/t5/Intel-Integrated-Performance/Inverse-Fourier-Transform/m-p/1017171#M23476 <P>Hi Kamil,</P> <P>&nbsp;</P> <P>there's FFTInv for inverse transformation. Here's the link for IPP 7.1 reference manual ( <A href="https://software.intel.com/sites/products/documentation/doclib/iss/2013/ipp/ipp_manual/ippi.pdf">https://software.intel.com/sites/products/documentation/doclib/iss/2013/ipp/ipp_manual/ippi.pdf</A> ). Please refer page 583 for FFTInv.</P> <P>Thanks.</P> Wed, 27 May 2015 05:30:26 GMT https://community.intel.com/t5/Intel-Integrated-Performance/Inverse-Fourier-Transform/m-p/1017171#M23476 Jonghak_K_Intel 2015-05-27T05:30:26Z