Algorithm for average magnitude in FFT spectrum

[stroma]

Hi
Can someone guide me to the right algorithm to average magnitude in fft spectrum. Can this be done with n-point moving average filter without need to store last n frames of magnitude spectrum? Now I’m using exponential moving average algorithm – Xavr = alpha*Xavr + (1-alpha)*Xnew. Is there similar formula for n-point moving average?

Best regards
stroma

 

[elcielo]

fft(average)

http://www.spectrumsdi.com/ch12.pdf

 

[stroma]

what are fft point and average?

Hi elcielo,
Sorry but I can’t find answer of my question in this pdf /by the way I have printed version of whole book/. Can you be more specific please?

best regards
stroma

Added after 1 hours 26 minutes:

i found yhe information i need - it is in chapter 15 of the book