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Filter: fixed typo in 9 point DerivativeFilter

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This commit is contained in:
Andrew Tridgell 2012-07-05 15:11:35 +10:00
parent 4de662e2af
commit 92001e3e7d
1 changed files with 1 additions and 1 deletions
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2
libraries/Filter/DerivativeFilter.cpp
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@ -52,7 +52,7 @@ float DerivativeFilter<T,FILTER_SIZE>::apply(T sample, uint32_t timestamp)
case 9:
result = 2*14*(f(1) - f(-1)) / (x(1) - x(-1))
+ 4*14*(f(2) - f(-2)) / (x(2) - x(-2))
+ 6* 6*(f(3) - f(-3)) / (x(3) - x(-3));
+ 6* 6*(f(3) - f(-3)) / (x(3) - x(-3))
+ 8* 1*(f(4) - f(-4)) / (x(4) - x(-4));
result /= 128;
break;