* I should clarify as well, for your first question. State of the art is generally either IBM's 2016 English Conversational Telephone Speech Recognition System

* I should clarify as well, for your first question. State of the art is generally either IBM's 2016 English Conversational Telephone Speech Recognition System [0], or Baidu's DeepSpeech2 [1]. IBM's is a little more complex, but I'd actually argue Baidu is more promising due to the robust ability to learn new languages. 0: arxiv.org/abs/1604.08242 1: arxiv.org/abs/1512.02595