[PD] about fiddle~

Jamie Bullock jamie at postlude.co.uk
Sat Jan 12 14:07:21 CET 2008


On Fri, 2008-01-11 at 19:59 +0000, Jamie Bullock wrote:

> Krimphoff:
> 
> Irregularity = \sum_{k=2}^{N-1} |a_k - \frac{a_{k-1} + a_k + a_{k+1}}
> {3}|
> 
> Jensen:
> 
> Irregularity = \frac{\sum_{k=1}^{N} (a_k - a_{k+1})} {\sum_{k=1}^N
> a_k^2}
> 

Where a_k is the amplitude of the kth coefficient in the magnitude
spectrum.

Jamie

-- 
www.postlude.co.uk





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