Your first interaction with Dragon is setting up your user account and voice profile. One of the choices you make is which base language to use for your voice profile. This post helps you choose the right setting for you.
English is the first language of around 375 million people. Up to another billion people, depending on how you define mastery of the language, speak English as a second language. The countries with the largest populations of native English speakers are, in order, the USA, UK, Canada, Australia, Ireland, South Africa and New Zealand.
All of us speak the English lingua franca differently, of course. Not only do we have accents that makes some words sound different from region to region, we also use different vocabularies that include unique words and phrases. Other software can readily be used across the English-speaking world with minor spelling changes. Getting the best speech recognition accuracy requires a bit more work.
To achieve high initial accuracy, Dragon asks you to nominate a language when you use the New User Wizard. This is a starting point for Dragon to learn how you speak and, if your speech is a good match for one of the languages, making the appropriate choice gives recognition a significant boost. The language model includes an accoustic model (how words are pronounced) which is based on data sets of people speaking from those countries.
There's also a language model based on text collected from such sources as newspapers and web pages. The language model contains not only a list of words -- a vocabulary -- but also frequency information about phrases of two, three and four words. Dragon takes your speech, filters out ums and ahs, then puts the acoustic and language models together to recognize your speech.
When you run the New User Wizard, you can choose from the following settings:
- US English
- UK English
- Australian English
- Indian English
- South East Asian English
When you choose the US language, you can also specify an accent (General, Australian, British, Indian, Inland Northern US, South East Asian, Sourthern and Spanish). This gives you an acoustic model that should be a better match for your accent but retains a US language model so that you Dragon uses US spelling and vocabulary.
Canadians can safely class themselves as US English for the purposes of Dragon and UK covers Irish accents as well as the diversity of speech found throughout the United Kingdom. South East Asian English covers Singaporean and Malaysian English, and is helpful for Hong Kong speakers. While many New Zealanders get good value enrolling as Australians, more revile at being categorized with their Antipodean neighbours and use the UK language model.
If you don't come from one of the broad categories above, choose the closest model to your accent -- often UK English -- to set up your voice profile. The language model is just a starting point and if you correct recognition errors as you use Dragon, your accuracy should improve.
If you speak English as a second language, check to see whether there's a Dragon version for your native language. That version may include English as well.
Posted
03-05-2009 8:42 PM
by
Derek Austin
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