CMSIS DSP - FFT / RFFT

Recently I've been trying to implement FFT provided in CMSIS-DSP libraries. And something strange happens - some of output array elements have values below 0. I am using arm_rfft_fast_f32 . According...
CMSIS DSP - FFT / RFFT

Recently I've been trying to implement FFT provided in CMSIS-DSP libraries. And something strange happens - some of output array elements have values below 0. I am using arm_rfft_fast_f32 . According...
CMSIS DSP RFFT - too much cycles

Hi, I use the CMSIS DSP library to calculate a f32 RFFT with a block size of 1024 . For this it takes 262823 cycles. I read in the white-paper that it should take 55538 cycles. Because of the measurement...
CMSIS DSP RFFT - too much cycles

Hi, I use the CMSIS DSP library to calculate a f32 RFFT with a block size of 1024 . For this it takes 262823 cycles. I read in the white-paper that it should take 55538 cycles. Because of the measurement...
CFFT AND RFFT using CMSIS DSP library

Hi, I am currently trying to use the CMSIS DSP library for finding the frequency bin. I have used both CFFT and RFFT function to compute the frequency bin of input signal. My input data is of 128 samples...