Mercurial > hg > emotion-detection-top-level

diff Code/Descriptors/yin/private/src/minparabolic.m @ 0:ea0c737c6323

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author Dawn Black <dawn.black@eecs.qmul.ac.uk>
date Thu, 26 Jul 2012 14:46:25 +0100
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Code/Descriptors/yin/private/src/minparabolic.m	Thu Jul 26 14:46:25 2012 +0100
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+% [y,idx] = minparabolic(x) - locate minima using parabolic interpolation
+%
+%  x: input vector
+%  y: same as x, with local minima replaced by interpolated minima
+%  idx: position of interpolated minima (fractionary)
+%
+% At each local minimum of x, that sample and its neighbors are used to
+% determine a parabola.  The minimum of the parabola is used as the new
+% minimum value, the abscissa of the minimum is used as its position.