Moving average of a product

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Rica
Rica 2013-1-23
Hi all!
with moving averege filter we can calculte the mean of:
(a1+a2+a3+....+an)/n.
is there any methods like the runing moving averege to calculate:
log(a1*a2*a3*...*an)/n ?

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回答（1 个）

Walter Roberson
Walter Roberson 2013-1-23
You could apply the moving average filter to log(a)

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