====== notes about speech recognition ======

  * https://www.unicom.com/blog/entry/686
  * http://cmusphinx.sourceforge.net/wiki/tutorialdict


  * http://www.speech.cs.cmu.edu/tools/lmtool-new.html
  * http://cmusphinx.sourceforge.net/wiki/tutorialam
  * https://news.ycombinator.com/item?id=11173872