Wolfram Demonstrations Projecthttp://demonstrations.wolfram.com/An Open Resource of Interactive Mathematica VisualizationsCopyright 2009 Wolfram Demonstrations Project & ContributorsSynthetic Fetal Electrocardiogramhttp://demonstrations.wolfram.com/SyntheticFetalElectrocardiogram/]]>http://demonstrations.wolfram.com/SyntheticFetalElectrocardiogram/