Mercurial > hg > emotion-detection-top-level
comparison Code/Descriptors/yin/private/src/minparabolic.m @ 0:ea0c737c6323
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| author | Dawn Black <dawn.black@eecs.qmul.ac.uk> |
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| date | Thu, 26 Jul 2012 14:46:25 +0100 |
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| 1 % [y,idx] = minparabolic(x) - locate minima using parabolic interpolation | |
| 2 % | |
| 3 % x: input vector | |
| 4 % y: same as x, with local minima replaced by interpolated minima | |
| 5 % idx: position of interpolated minima (fractionary) | |
| 6 % | |
| 7 % At each local minimum of x, that sample and its neighbors are used to | |
| 8 % determine a parabola. The minimum of the parabola is used as the new | |
| 9 % minimum value, the abscissa of the minimum is used as its position. |