so it&#39;s all about the independent component analysis and linear algebra<div><br></div><div>let&#39;s websearch~? for fastica</div><div><br></div><div><a href="https://en.wikipedia.org/wiki/FastICA">https://en.wikipedia.org/wiki/FastICA</a></div><div><br></div><div>1. prewhitening the data</div><div>single or multiple component extraction, let&#39;s start with multiple</div><div><br></div><div>hey they have pseudocode</div>