Presentation Overview. ICA MotivationMathematical FormulationFast ICA AlgorithmApplicationsNoise Separation and Feature ExtractionDigital Watermarking. Motivation for ICA. Cocktail Party ProblemSuppose you are in a crowded room with many people. How do you understand what any one person is saying?Separation of Independent SignalsSimilar to Blind Source SeparationLittle knowledge of the signalsAccess to mixed signals only.