초록 ▼

An adaptive speech recognition and control system and method for controlling various mechanisms and systems in response to spoken instructions and in which spoken commands are effective to direct the system into appropriate memory nodes, and to respective appropriate memory templates corresponding t

An adaptive speech recognition and control system and method for controlling various mechanisms and systems in response to spoken instructions and in which spoken commands are effective to direct the system into appropriate memory nodes, and to respective appropriate memory templates corresponding to the voiced command. Spoken commands from any of a group of operators for which the system is trained may be identified, and voice templates are updated as required in response to changes in pronunciation and voice characteristics over time of any of the operators for which the system is trained. Provisions are made for both near-real-time retraining of the system with respect to individual terms which are determined not be positively identified, and for an overall system training and updating process in which recognition of each command and vocabulary term is checked, and in which the memory templates are retrained if necessary for respective commands or vocabulary terms with respect to an operator currently using the system. In one embodiment, the system includes input circuitry connected to a microphone and including signal processing and control sections for sensing the level of vocabulary recognition over a given period and, if recognition performance falls below a given level, processing audio-derived signals for enhancing recognition performance of the system.

대표청구항 ▼

[ what is claimed is:] [1.] An adaptive speech recognition and control system, comprising:a speech recognition circuit section including memory means for storing a plurality of vocabulary subsets, each of the plurality of vocabulary subsets identified by a node, each subset comprising a plurality of

[ what is claimed is:] [1.] An adaptive speech recognition and control system, comprising:a speech recognition circuit section including memory means for storing a plurality of vocabulary subsets, each of the plurality of vocabulary subsets identified by a node, each subset comprising a plurality of voice templates;a microphone;analog circuitry associated with the microphone for processing voice commands spoken into the microphone and conducting the processed signals to the speech recognition circuitry;processing means associated with the speech recognition circuitry for causing the speech recognition circuit section to user-selectively transition to a node which opens a memory section storing a selected vocabulary subset, corresponding to a spoken transitional command, in response to a predetermined transitional command being spoken into the microphone by an operator, and for subsequently causing the speech recognition circuitry to search the voice templates stored in the selected subset upon a vocabulary term subsequently being spoken while the speech recognition circuit is transitioned to the node corresponding to the selected vocabulary subset, and for determining, within a degree of certainty, whether the vocabulary term matches one of the voice templates in the selected subset.