Google has demoed a new voice search feature in its Chrome browser that means you'll be able to search using your voice, but without pressing a button first. 

The feature, which builds on the company's voice search offerings already available in the Chrome browser, won't require you to press the mic button first on screen, but will work hands-free after you say "OK, Google". 

"People communicate with each other by conversation, not by typing keywords - and we’ve been hard at work to make Google understand and answer your questions more like people do," says Amit Singhal, a senior vice-president at Google. 

"Already, you can tap a mic, talk to Google in a more natural way and get responses spoken back to you on Android, iPhone, and iPad devices. Today, we previewed what this conversational experience will look like in Chrome on your desktops and laptops. Soon, you’ll be able to just say, hands-free, 'OK, Google, will it be sunny in Santa Cruz this weekend?' and get a spoken answer."

Like Siri, the idea is that you talk to your computer naturally and you will get a natural response back after Google taps into the Google Knowledge Graph. 

The feature works in a similar way to the company's Google Glass glasses whereby the wearer says "OK, Glass". It is also similar to Microsoft's hands-free approach with Kinect on the Xbox 360. 

Google hasn't given an exact date as to when the new feature will be available.