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Re: Another way to calculate THD

Hi again,

Ran an experiment where all harmonics where set to the
same value of .001 (-60db) of the fundamental. Simulating
a flat distortion pattern like you get from SS.

THD calculated = .35%

Using previously describe weighting factors:

Weighted THD = .65%

Next I weighted the harmonics like this instead:

sqrt( W2*W2*N2*N2 + W3*W3*N3*N3 + ...)

Actually squaring the weighting factor as well as
the harmonic value.

Using weighting values described previously

Square Weighted THD = 2.05%

Seems reasonable. I like this result better.

Still doesn't accomodate Cheever or Hiraga's Null result.
Maybe take a stab at this next.



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  • Re: Another way to calculate THD - mfc 05/18/0322:13:44 05/18/03 (0)


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