Speech recognition

Details Speech recognition Speech recognition

G - Physics

10

L

354/54

G10L 15/02 (2006.01) G10L 11/02 (2006.01)

Patent

CA 1232686

SPEECH RECOGNITION Abstract of the Disclosure In a speech recognizer, for recognizing unknown utterances in isolated-word speech or continuous speech, improved recognition accuracy is obtained by augmenting the usual spectral representation of the unknown utterance with a dynamic component. A corresponding dynamic component is provided in the templates with which the spectral representation of the utterance is compared. In preferred embodiments, the representation is mel-based cepstral and the dynamic components comprise vector differences between pairs of primary cepstra. Preferably the time interval between each pair is about 50 milliseconds. It is also preferable to compute a dynamic perceptual loudness component along with the dynamic parameters. - i -

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