Speech-Recognition System for Location-Aware Applications
First Claim
1. A speech-recognition system comprising:
- a feature extractor for extracting features from an electromagnetic signal that represents speech; and
a decoder for generating output in a language based on;
(i) output from said feature extractor,(ii) the contents of a lexicon for said language, and(iii) a first grammar that is for said language; and
WHEREIN THE IMPROVEMENT COMPRISES;
said decoder is also for generating actions for a location-aware application based on a second grammar; and
wherein said second grammar comprises one or more rules concerning the geo-locations of one or more users.
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Abstract
An apparatus and associated methods are disclosed that enable a speech-recognition system to perform functions related to the geo-locations of wireless telecommunications terminal users. In accordance with the illustrative embodiment, a geo-spatial grammar is employed that comprises rules concerning the geo-locations of users, and a speech-recognition system uses the geo-spatial grammar to estimate the geo-locations of wireless telecommunications terminal users and generate actions in location-aware applications, in addition to its usual function of identifying words and phrases in spoken language. The present invention is advantageous in a variety of location-aware applications, such as interactive voice response (IVR) systems, voice-activated navigation systems, voice search, and voice dialing.
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Citations
20 Claims
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1. A speech-recognition system comprising:
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a feature extractor for extracting features from an electromagnetic signal that represents speech; and a decoder for generating output in a language based on; (i) output from said feature extractor, (ii) the contents of a lexicon for said language, and (iii) a first grammar that is for said language; and WHEREIN THE IMPROVEMENT COMPRISES; said decoder is also for generating actions for a location-aware application based on a second grammar; and wherein said second grammar comprises one or more rules concerning the geo-locations of one or more users. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A speech-recognition system comprising:
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a feature extractor for extracting features from an electromagnetic signal that represents speech; and a decoder for generating output in a language based on; (i) output from said feature extractor, (ii) the contents of a lexicon for said language, and (iii) a first grammar that is for said language; and WHEREIN THE IMPROVEMENT COMPRISES; said decoder is also for estimating a geo-location of a user U of a wireless telecommunications terminal T based on a second grammar; and wherein said second grammar comprises one or more rules concerning the geo-locations of one or more users. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A method comprising:
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receiving at a speech-recognition system an electromagnetic signal that represents speech; generating at said speech-recognition system output in a language, wherein said output is based on said electromagnetic signal and a first grammar for said language; receiving at said speech-recognition system one or more signals concerning the geo-location of one or more users; and generating at said speech-recognition system an action for a location-aware application based on a second grammar; wherein said second grammar comprises one or more rules concerning the geo-locations of one or more users. - View Dependent Claims (17, 18, 19, 20)
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Specification