Google Voice Search for Desktop PC
Google Voice Search service has been officially announced for desktop PC by Google. With Google Voice Search you can talk instead of type to search on google.com. All you need is Google Chrome 11 or higher and a built-in or attached microphone. Google is rolling out this Voice Search feature gradually for every Google Chrome user on Windows, Linux and Mac OS (maybe it will be available for Firefox and Internet Explorer user too).
How to enable Google Voice Search: If you want to experience Google Voice Search, connect your microphone with your computer. Download and install Google Chrome Browser and visit Google.com, you will notice a mic icon in the Google Search box. Click on it and speak into your microphone (Available English only) to start your Google Voice Search.
Update: Google has announced natural language voice search feature for desktop PC user via Chrome 27 build. Google will also roll out Google Now, its intelligent personal assistant tool for PC user with Google Now for Chrome in the future. If you want to add Google voice search experience to other website, you can try Google Voice Search for PC and MAC with a Chrome extension.
Google Voice Search for Desktop PC:
Google Chrome for Mac OS X and Linux
Google Voice Search for PC and MAC
Google Voice for Chrome
Google Voice for iPhone
Google Voice .NET API