title: Split speech audio at spoken word
body: <p>I have an audio file of a long text with different sections all beginning with the spoken word "<em>Chapter</em>" (narrated by the same speaker). Is there a way to split the audio file in smaller files at these words? </p>
  
  <p>I am thinking of cutting  out one of the word occurrences of "<em>chapter</em>", put it in a separate audio file and then use some tool for fuzzy matching of the original audio against the short snippet to find the "<em>chapter</em>" occurrences  and split the original file at these occurrences.</p>
  
  <p>Which tool can do this? SOX? Audacity?</p>