The Hann window in arduinoFFT.cpp is defined as 0.54 * (1.0 - cos(twoPi * ratio)). The 0.54 should be 0.5 (e.g., Hann function on Wikipedia). Looks like the incorrect 0.54 perhaps originates from the Hamming window, where 0.54 is the correct value
Not sure if this alters the respective value in the window compensation table in #40.
The Hann window in
arduinoFFT.cppis defined as0.54 * (1.0 - cos(twoPi * ratio)). The0.54should be0.5(e.g., Hann function on Wikipedia). Looks like the incorrect 0.54 perhaps originates from the Hamming window, where 0.54 is the correct valueNot sure if this alters the respective value in the window compensation table in #40.
/cc @pvutukur