The update now includes a tool that users can access when they want, and literally train their Google Voice Recognition to work better with their personal voice, intonations, and such. This means that the voice recognition software will be able to determine your particular accent (versus everyone else’s), speech pattern, and speech style. Slowly but surely, the voice recognition software will be able to recognize your particular voice, and be able to work better each time you use it.
Google wants to make it as personal as possible, so with that in mind, users will have to opt-in to make use of the new technology. It will be tied to your account, along with all of the data it collects. As of right now, the new software is available for Android handsets running Android 2.2 or 2.3 (through the Google Voice Search app, in the market), and it’s available only to English speakers in the United States.