Start/end point detection for word recognition

Details Start/end point detection for word recognition Start/end point detection for word recognition

1997-05-12

1998-08-11

Hunter, Daniel S.

Data processing: speech signal processing, linguistics, language

Speech signal processing

Recognition

704233, 704247, 704248, 704252, G10L 900

Patent

active

057941955

ABSTRACT:
During speech recognition of words, a precise and strong detection of start/end points of the words must be ensured, even in very noisy surroundings. Use of a feature with noise-resistant properties is shown wherein for a feature vector, a function of the signal energy is formed as the first feature and a function of the quadratic difference of an LPC (Linear-Predictive-Coding) cepstrum coefficient as a second feature. A check quantity or a maximum function of a distribution function is calculated, which detects the start/end points by comparison with a threshold.

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