SLWU087E november 2013 – june 2023
While calculating the Real FFT, the time domain data of the current channel, along with the FFT windowing technique (Hamming, Hanning, Blackman, and Rectangular) is provided to the Intel® Signal Processing DLL, which calculates the FFT.
While calculating Complex FFT, channels are grouped into pairs of two, sequentially. Considering the channel number starting from 1, the time domain data of the odd channel is provided as the real channel data, while the time domain data of the even channel is provided for the imaginary part to calculate the Complex FFT using the Intel Signal Processing DLL.