专利名称：Apparatuses and method for training and
operating speech recognition systems
发明人：Steven D. Squires,Frank J. McGrath,Peter S.
Heitman,Joel W. Parke
申请号：US08/882920申请日：19970626公开号：US06092043A公开日：20000718
摘要：A word recognition system can: respond to the input of a character string froma user by limiting the words it will recognize to words having a related, but not
necessarily the same, string, score signals generated after a user has been prompted togenerate a given word against words other than the prompted word to determine if thesignal should be used to train the prompted word; vary the number of signals a user isprompted to generate to train a given word as a function of how well the training signalsscore against each other or prior models for the prompted word; create a new acousticmodel of a phrase by concatenating prior acoustic models of the words in the phrase;obtain information from another program running on the same computer, such as itscommands or the context of text being entered into it, and use that information to varywhich words it can recognize; determine which program unit, such as an applicationprogram or dialog box, currently has input focus on its computer and create a vocabularystate associated with that program unit into which vocabulary words which will be madeactive when that program group has the focus can be put; detect the availablecomputational resources and alter the instructions it executes in response; test if its
ability to respond to voice input has been shut off without user confirmation, and, if so,turn that ability back on and prompt the user to confirm if that ability is to be turned off;store both a first and a second set of models for individual vocabulary words and enablea user to selectively cause the recognizer to disregard the second set of models for aselected word; and/or score a signal representing a given word against models for thatword from different word model sets to select which model should be used for futurerecognition.
申请人：DRAGON SYSTEMS, INC.
代理人：Edward W. Porter
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