Digital Assistant

Speech recognition is the ability of a computer to identify and respond to the sounds produced in human speech.

The HTML5 Speech Recognition

The HTML5 Speech Recognition API allows JavaScript to have access to a browser’s audio stream and to convert it to text.

Speech to Text, Text to Speech

The Web Speech API is actually separated into two totally independent interfaces. We have SpeechRecognition for understanding human voice and turning it into text (Speech to Text) and SpeechSynthesis for reading strings out loud in a computer generated voice (Text to Speech).

The Speech recognition interface lives on the browser's window object as SpeechRecognition in Firefox and as webkitSpeechRecognition in Chrome, and as msSpeechRecognition in Microsoft Edge, and as mozSpeechRecognition in Mozilla

Web Speech API

var recognition = new (window.SpeechRecognition
|| window.webkitSpeechRecognition || window.mozSpeechRecognition || window.msSpeechRecognition)();