"OK Google" command is coming to the desktop via a new Google Chrome extension.
The extension is explicitly labeled as a beta, but it seems to work well.
After installation you just have to allow it access to your microphone and get ready to start talking to your computer.
|The “OK Google” Hotword Jumps From Mobile To Desktop Chrome With New Google Extension (US Only)
Google’s voice search feature has been slowly but surely working its way into more mobile products recently. First the hotword came to the search app, then… by Ryan Whitwam in News