title: Simplest algorithm of measuring how similar of two short audio
body: <p>The question is to look for any open source or simple implementation to measure how similar between two audios on the iOS application. </p>
  
  <p>Simply speaking, audio can be represented by 1-D vector, to calculate the distance between the 1D vector. But the audio length will be different, therefore need some pre-processing etc.</p>
  
  <p>Looking forward to get some clues here, thanks</p>