METHOD AND SYSTEM FOR SPEECH COMMAND DETECTION, AND INFORMATION PROCESSING SYSTEM
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United States of America Patent
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Issued Date -
Nov 13, 2014
app pub date -
May 9, 2014
filing date -
May 13, 2013
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Abandoned
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Abstract
A method for speech command detection comprises extracting speech features from a speech signal inputted into a system, converting the speech features into a word sequence, obtaining time durations of speech segments corresponding to the respective non-command words and an acoustic score of each of the command word candidates, calculating rhythm features of the speech signal based on the time durations, and recognizing a speech corresponding to the at least one command word candidates as a speech command directed to the system or a speech not directed to the system based on the acoustic score and the rhythm features. The word sequence comprises at least two successive non-command words and at least one command word candidate. The rhythm features describe a similarity of time durations of speech segments corresponding to the respective non-command words, and/or a similarity of energy variations of the speech segments corresponding to the respective non-command words.
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