US Patent No: 5,027,406

Number of patents in Portfolio can not be more than 2000

Method for interactive speech recognition and training

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Abstract

A method for creating word models for a large vocabulary, natural language dictation system. A user with limited typing skills can create documents with little or no advance training of word models. As the user is dictating, the user speaks a word which may or may not already be in the active vocabulary. The system displays a list of the words in the active vocabulary which best match the spoken word. By keyboard or voice command, the user may choose the correct word from the list or may choose to edit a similar word if the correct word is not on the list. Alternately, the user may type or speak the initial letters of the word. Then the recognition algorithm is called again satisfying the initial letters, and the choices displayed again. A word list is then also displayed from a large backup vocabulary. The best words to display from the backup vocabulary are chosen using a statistical language model and optionally word models derived from a phonemic dictionary. When the correct word is chosen by the user, the speech sample is used to create or update an acoustic model for the word, without further intervention by the user. As the system is used, it also constantly updates its statistical language model. The system gets more and more word models and keeps improving its performance the more it is used. The system may be used for connected speech as well as for discrete utterances.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
NUANCE COMMUNICATIONS, INC.ARMONK, NY1228

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Baker, James K Maitland, FL 47 1546
Porter, Edward W Exeter, NH 18 622
Roberts, Jed Cambridge, MA 1 233

Cited Art

Patent Info (Count) # Cites Year
 
DRAGON SYSTEMS, INC. (2)
4,866,778 Interactive speech recognition apparatus 145 1986
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INTERNATIONAL BUSINESS MACHINES CORPORATION (2)
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BELL TELEPHONE LABORATORIES, INCORPORATED (1)
4,277,644 Syntactic continuous speech recognizer 48 1979
 
TEXAS INSTRUMENTS INCORPORATED (1)
4,882,757 Speech recognition system 43 1989
 
TOKYO SHIBAURA DENKI KABUSHIKI KAISHA (1)
4,653,097 Individual verification apparatus 42 1986

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
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5,765,132 Building speech models for new words in a multi-word utterance 18 1995
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6,073,097 Speech recognition system which selects one of a plurality of vocabulary models 32 1997
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6,151,575 Rapid adaptation of speech models 26 1997
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6,601,027 Position manipulation in speech recognition 17 1998
6,163,768 Non-interactive enrollment in speech recognition 66 1998
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7,392,182 Speech recognition system 0 2002
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INTERNATIONAL BUSINESS MACHINES CORPORATION (12)
5,425,129 Method for word spotting in continuous speech 29 1992
5,524,169 Method and system for location-specific speech recognition 62 1993
5,475,792 Telephony channel simulator for speech recognition application 158 1994
5,513,298 Instantaneous context switching for speech recognition systems 74 1995
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6,067,514 Method for automatically punctuating a speech utterance in a continuous speech recognition system 21 1998
6,577,999 Method and apparatus for intelligently managing multiple pronunciations for a speech recognition vocabulary 8 1999
6,778,958 Symbol insertion apparatus and method 11 2000
6,675,142 Method and apparatus for improving speech recognition accuracy 25 2001
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AT&T CORP. (9)
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LUCENT TECHNOLOGIES INC. (5)
5,623,578 Speech recognition system allows new vocabulary words to be added without requiring spoken samples of the words 30 1993
5,960,393 User selectable multiple threshold criteria for voice recognition 18 1997
6,151,574 Technique for adaptation of hidden markov models for speech recognition 28 1998
6,438,520 Apparatus, method and system for cross-speaker speech recognition for telecommunication applications 19 1999
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ROCKSTAR BIDCO, LP (3)
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SRI INTERNATIONAL (3)
5,634,086 Method and apparatus for voice-interactive language instruction 83 1995
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