Start/end point detection for word recognition
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United States of America Patent
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Aug 11, 1998
Issued Date -
N/A
app pub date -
May 12, 1997
filing date -
Jun 28, 1994
priority date (Note) -
Expired
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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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