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US 2016/0104481 A1Published application
Phrase-based dialogue modeling with particular application to creating recognition grammars for voice-controlled user interfaces
AssigneeNant Holdings IP, LLC
InventorsFARZAD EHSANI, EVA M. KNODT
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Abstract
The invention enables creation of grammar networks that can regulate, control, and define the content and scope of human-machine interaction in natural language voice user interfaces (NLVUI). More specifically, the invention concerns a phrase-based modeling of generic structures of verbal interaction and use of these models for the purpose of automating part of the design of such grammar networks.
Claims21
1-69. (canceled)
A speech recognition computer system comprising:
- an acoustic signal analyzer that generates acoustic features from a digital speech signal representing spoken input;
- at least one recognition grammar specifying legitimate word sequences representing abstract meaning from alternative phrase variants of a language;
- a phonetic dictionary having phonetic transcriptions of acoustic features;
- and
- an acoustic decoder coupled with the acoustic signal analyzer, the recognition grammar, and the phonetic dictionary and that:
- computes a set of most probable word hypotheses based on the acoustic features from the digital speech signal and the phonetic transcriptions in the phonetic dictionary;
- constrains the word hypotheses to a narrowed set of commands according to the abstract meaning of the legitimate word sequences from the recognition grammar;
- and
- provides the narrowed set of commands to a natural language processing component that translates the narrowed set of commands to a formalized set of instructions that can be processed by an application.
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