I'm working in an application similar to the one described in the paper attached. Does someone have experience using Walsh Functions for RMS calculation? I think they are not used much in the industry perhaps because they are not so practical (?). I'm using a STM32 microcontroller with no FPU and I need to find RMS of a 50/60 Hz signal like in the paper. Is this a good approach to try or are there better ways?
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