Hey,
i want to make fft of signal on STM32 discovery board with CORTEX-M4 core. I look at example and write some code. It works with their signal. But when i test it with my test signal, generated in matlab
i have problem. I generate test signals with sampling frequency 20kHz. Lenght of test signal is 2048 samples and lenght of fft is 1024. I get 1024 values, but only first 512 values are
credibly. Is it normal that 512. value respresent frequency 5kHz?
i want to make fft of signal on STM32 discovery board with CORTEX-M4 core. I look at example and write some code. It works with their signal. But when i test it with my test signal, generated in matlab
i have problem. I generate test signals with sampling frequency 20kHz. Lenght of test signal is 2048 samples and lenght of fft is 1024. I get 1024 values, but only first 512 values are
credibly. Is it normal that 512. value respresent frequency 5kHz?