1. 2013. Apple stores your voice data for two years. https://goo.gl/6hx1kh. 2013. Apple stores your voice data for two years. https://goo.gl/6hx1kh.
2. 2014. Faked Obama speech. https://goo.gl/pnR3VK. 2014. Faked Obama speech. https://goo.gl/pnR3VK.
3. 2016. Microsoft achieves speech recognition milestone. https://goo.gl/FsPLrJ. 2016. Microsoft achieves speech recognition milestone. https://goo.gl/FsPLrJ.
4. 2017. CMU PDA database. www.speech.cs.cmu.edu/databases/pda/. 2017. CMU PDA database. www.speech.cs.cmu.edu/databases/pda/.
5. 2017. Google stores your voice inputs. https://goo.gl/7w5We1. 2017. Google stores your voice inputs. https://goo.gl/7w5We1.