Documentation of getminmax

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Function Synopsis

[maxpos,minpos,maxs,mins]=getminmax(sig)

Help text

 method of class @signal

 returns the height and lows in locations and time of all local maxima in the signal
 in case of continuus maxima, the last value of the series is taken
 
   INPUT VALUES:
  
   RETURN VALUE:

 This external file is included as part of the 'aim-mat' distribution package
 (c) 2011, University of Southampton
 Maintained by Stefan Bleeck (bleeck@gmail.com)
 download of current version is on the soundsoftware site: 
 http://code.soundsoftware.ac.uk/projects/aimmat
 documentation and everything is on http://www.acousticscale.org

Cross-Reference Information

Listing of function getminmax

function [maxpos,minpos,maxs,mins]=getminmax(sig)
% usage: [maxpos,minpos,maxs,mins]=getminmax(sig)


werte=getdata(sig);
werte=werte';

% find all maxima
% mit NULL!!
maxpos = find((werte >= [0 werte(1:end-1)]) & (werte > [werte(2:end) 0]));
maxs=werte(maxpos);

% find all minima
minpos = find((werte < [inf werte(1:end-1)]) & (werte <= [werte(2:end) inf]));
mins=werte(minpos);

maxpos=bin2time(sig,maxpos);
minpos=bin2time(sig,minpos);