The audio visualization feature has been incorporated into both Chromium and the “Canary” build of Google’s Chrome browser, according to The Next Web .
Since introduced as part of Google’s Chrome development process in 2010, Canary has been a bleeding edge version of the browser–a place to experiment with features before testing them in the development channel.
So that means that it may be some time before the visualisation feature – which allows you to see if the web page to a tab is playing or recording audio – appears, if ever, in a future version of the browser.
If you like to open tabs with abandon, the feature could be very useful to you in finding a web page blaring audio in a rat’s nest of tabs.
The audio tab feature was initially spotted by blogger and Chromium source code crawler Francois Beaufort. “Google Chrome Team is working on identifying tabs that play audio in order to exclude them from the list of tabs to discard when memory runs out,” he wrote.
“In a first step, they’ve added a small indicator on top of the tab favicon to tell when a tab is actually playing audio,” he added.
The feature allows you to apply the browser’s “privacy mode” to individual tabs. Privacy mode prevents the browser from keeping a history of the sites you’ve visited and cookies you’ve acquired.
In prior versions of Firefox, when privacy mode was entered, all current tabs were saved, the browser window closed and a new window opened in privacy mode. When Firefox 20 is released, you’ll be able to mix private and non-private tabs in the same browser session, assuming the pre-release functionality stays intact.
Other new additions in Firefox beta 20 include:
- A new download manager located on the browser’s toolbar instead of in a separate management pane.
- A plug-in warning that alerts you if an applet freezes for more than 45 seconds. If it does, it gives the option of restarting the plug-in rather than rebooting the browser.
- Support of WebRTC‘s getUserMedia, which opens up web access to your computer’s camera and microphone–but only with your permission.