1. Alexa, Siri, Cortana, and More: An Introduction to Voice Assistants
2. World Health Organization Factsheet Deafness and Hearing Loss 15 March 2018 https://www.who.int/news-room/fact-sheets/detail/deafness-and-hearing-loss World Health Organization Factsheet Deafness and Hearing Loss 15 March 2018 https://www.who.int/news-room/fact-sheets/detail/deafness-and-hearing-loss
3. Google Cloud Speech-To-Text API documentation: https://cloud.google.com/speech-to-text/docs/ Google Cloud Speech-To-Text API documentation: https://cloud.google.com/speech-to-text/docs/
4. Android Speech to Text API documentation: https://developer.android.com/reference/android/speech/package-summary Android Speech to Text API documentation: https://developer.android.com/reference/android/speech/package-summary
5. Google Cloud Text-To-Speech API documentation: https://cloud.google.com/text-to-speech/docs/ Google Cloud Text-To-Speech API documentation: https://cloud.google.com/text-to-speech/docs/