title: Getting the similarity grad between multiple vectors ?
body: <p>I have wrote a program to analyse the multiple audio files, the algorithm is long, but now I have  a result that I was expecting, the problem that is how to describ the similarity grad between the diffrent vectors that I've got :
  <img src="https://i.stack.imgur.com/87hst.png" alt="enter image description here">
  <img src="https://i.stack.imgur.com/MnOjt.png" alt="enter image description here">
  <img src="https://i.stack.imgur.com/rM78O.png" alt="enter image description here"></p>
  
  <p>I know that the cross correlation is a way to do that, but I can't conclude from the result of :</p>
  
  <pre><code>xcorr(x1,x2,'coeff')
  </code></pre>
  
  <p>anything I get a bunch of number that I can't interpret . so my question how can evaluate the similarity between the different curves, and please I'm asking for code too so I can understand, even if it one line.</p>
  
  <p>thanks in advance for any help ! </p>