Unit Selection
From SpeechWiki
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[[Image:PhoneCorrectProb.png|thumb|none|800px|The probability of a particular phone occurring in the corpus, and the probability of a particular phone that is correct in the corpus]] | [[Image:PhoneCorrectProb.png|thumb|none|800px|The probability of a particular phone occurring in the corpus, and the probability of a particular phone that is correct in the corpus]] | ||
| + | This seems roughly consistent with http://myweb.tiscali.co.uk/wordscape/wordlist/phonfreq.html. | ||
[[Image:PhoneConfusionMatrix.png|thumb|none|800px|The Confusion matrix]] | [[Image:PhoneConfusionMatrix.png|thumb|none|800px|The Confusion matrix]] | ||
[[Image:PhoneConfusionMatrixTop40.png|thumb|none|800px| The confusion matrix ignoring EOW and various non-speech events]] | [[Image:PhoneConfusionMatrixTop40.png|thumb|none|800px| The confusion matrix ignoring EOW and various non-speech events]] | ||
Revision as of 02:30, 8 February 2009
Error driven unit selection
Some statistics
| Utterances | 2000 |
|---|---|
| Phonemes (including EOW and | 95938 |
| Frames | 756009 |
This seems roughly consistent with http://myweb.tiscali.co.uk/wordscape/wordlist/phonfreq.html.
The number of triphone decision tree leaf nodes is essentially not correlated with any of {total Frames,total Phones, error Phones, error Frames} per phone. Since the units are chosen to maximally cover the mistakes in the corpus, this might suggest that deepening the triphone DTs is not the same thing as coming up with these error-based units.
