Method and apparatus for speech recognition based on subsyllable

Details Method and apparatus for speech recognition based on subsyllable Method and apparatus for speech recognition based on subsyllable

1990-09-28

1993-05-04

Fleming, Michael R.

G10L 900

Patent

active

052088979

ABSTRACT:
In a digital computer, a method for speech recognition includes steps of sampling a speaker's speech and providing speech data sample segments of predetermined length at predetermined sampling intervals based on changes in energy in the speech. Cohesive speech segments, which correspond to intervals of stable vocoids, changing vocoids, frication, and silence, are identified from the speech data sample segments, and are assigned frames of subsyllables. Each cohesive segment corresponds to at least one respective frame, and each frame includes at least one of a plurality of subsyllables that characterizes predetermined gross and fine phonetic attributes of the respective cohesive segment. The subsyllables are located in a first lookup table mapping sequences of subsyllables into syllables, and the syllables are combined into words by locating words in another lookup table. The conformance of sequences of the words to a set of predetermined checking rules is checked, and a recognition result is reported. Apparatus implementing the method are also disclosed.

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