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...
RFFT CMSIS-DSP - Fluctuating index

I am using the Cortex M4 with CMSIS 5.4.0 DSP library. I'm using the arm_rfft_f32() function and the max_arm_f32() function to compute the maximum frequency bin of injected pure sine wave with an external...
RFFT CMSIS-DSP - Fluctuating index

I am using the Cortex M4 with CMSIS 5.4.0 DSP library. I'm using the arm_rfft_f32() function and the max_arm_f32() function to compute the maximum frequency bin of injected pure sine wave with an external...
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...