title: extracting signal from a sum of two signals shifted in time
body: <p>I have a signal (Sout(t)) which is a sum of two (almost) identical signals (S) shifted by a known delay dt:</p>
  <pre><code>Sout(t) = S(t)+S(t-dt)
  </code></pre>
  <p>How do I reconstruct the original S(t)? I program in python.</p>