Computer speaks?

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Of all the high-tech fantasies that sci-fi movies tantalise their escapist audiences with, surely that bit about giving your computer spoken orders is one of the most alluring. Ever since “Star Trek,” we’ve dreamed of being able to say, “Computer, display all known sources of dilithium crystals in the Kraxon Nebula!”

So far, the closest we can get is strapping on a headset and dictating, using a program like Dragon NaturallySpeaking to do the typing. This software is great for anyone who can’t type or doesn’t like to. And it lets you speak the names of menu commands and “click” links on a Web page.

NaturallySpeaking 10 takes some baby steps in the right direction. It doesn’t turn your computer into the “Star Trek” mainframe; it doesn’t know what you mean by, for example, “Make this document shorter and funnier.” NatSpeak’s principal mission, though, is to type out, into any Windows program, whatever you say. And in version 10, its maker, Nuance, claims to have eked out yet another 20% accuracy improvement.

I installed the program, donned the included headset and clicked “Skip initial training.” (In the early days of speech recognition, you had to read a 45-minute sample script to train the program to recognise your voice. As a quick test, I read aloud the first 1,000 words of “Freakonomics” into Microsoft Word. Impressively enough, NatSpeak effortlessly transcribed words like “Ku Klux Klan” and “Punic war.” It did, however, mistype seven easier words (“addition” instead of “edition,” for example, and “per trail” instead of “portrayal”).

In both cases, the number of spelling mistakes was zero. People who use NaturallySpeaking never make typos, only wordos. As you correct the mistakes with your voice — a speedy, streamlined procedure — the program learns. Whether you skip initial training or not, accuracy inches toward perfection over time.

One way that Nuance has improved accuracy is by acknowledging, for the first time, that not everyone speaks alike. Version 10 recognises eight accents: general (none), Australian, British, Indian, Great Lakes (Buffalo to Chicago), Southeast Asian, Southern United States and Spanish. If you don’t specify, the program will identify you automatically.

Isn’t that somehow politically incorrect? Ah, the heck with it. It’s dictation software. A little stereotyping can go a long way.