This demo was based on the tutorial Voice Driven Web Apps: Introduction to the Web Speech API by Glen Shires.
This is a minimal example of the API to help get you started. See Google's Demo for a more complete example.
The API captures segments of speech, sends them to Google for processing and handles the returned text.
This version also captures the user's speech via web audio, analyzes it and display a frequency spectrogram.
The version without the spectrogram is HERE
NOTE as of 2013-03-08 the demo only works in Google Chrome
NOTE that this demo must be hosted on a server - it will not work if you open the page as a file.
View the source of this page to see the script. Change the language code in the source to suit your language (currently 'en-GB').
The reference documentation for the Web Speech API is HERE.
This demo was created by Robert Jones of Craic Computing and is freely distributed under the terms of the MIT license.