CA2163017A1 - Speech recognition method using a two-pass search - Google Patents

Speech recognition method using a two-pass search

Info

Publication number
CA2163017A1
CA2163017A1 CA2163017A CA2163017A CA2163017A1 CA 2163017 A1 CA2163017 A1 CA 2163017A1 CA 2163017 A CA2163017 A CA 2163017A CA 2163017 A CA2163017 A CA 2163017A CA 2163017 A1 CA2163017 A1 CA 2163017A1
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Canada
Prior art keywords
search
vocabulary
model
pass
network
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2163017A
Other languages
French (fr)
Other versions
CA2163017C (en
Inventor
Vishwa Nath Gupta
Matthew Lennig
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nortel Networks Ltd
Original Assignee
Vishwa Nath Gupta
Matthew Lennig
Bell-Northern Research Ltd.
Northern Telecom Limited
Nortel Networks Corporation
Nortel Networks Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vishwa Nath Gupta, Matthew Lennig, Bell-Northern Research Ltd., Northern Telecom Limited, Nortel Networks Corporation, Nortel Networks Limited filed Critical Vishwa Nath Gupta
Publication of CA2163017A1 publication Critical patent/CA2163017A1/en
Application granted granted Critical
Publication of CA2163017C publication Critical patent/CA2163017C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L15/00—Speech recognition
    • G10L15/08—Speech classification or search
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L15/00—Speech recognition
    • G10L15/08—Speech classification or search
    • G10L15/14—Speech classification or search using statistical models, e.g. Hidden Markov Models [HMMs]
    • G10L15/142—Hidden Markov Models [HMMs]

Abstract

A speech recognition method uses a two-pass search to match an unknown utterance to a vocabulary word.
Words in the vocabulary are represented by concatenated allophone models and the vocabulary is represented as a network. On the first pass of the search, a one-state duration constrained model is used to search the vocabulary network. The one-state model has as its transition probability the maximum observed transitional probability (model distance) of the unknown utterance for the corresponding allophone model. Words having top scores are chosen from the first pass search, and rescored using a full Viterbi trellis with the complete allophone models and model distances. The rescores are sorted to provide a few top choices. Using a second set of speech parameters these few top choices are again rescored. Comparison of the scores using each set of speech parameters determines a recognition choice. Post processing is also possible to further enhance recognition accuracy. Test results indicate that the two pass search provides approximately the same recognition accuracy as a full Viterbi search of the vocabulary network.
CA002163017A 1993-06-24 1994-05-18 Speech recognition method using a two-pass search Expired - Fee Related CA2163017C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/080,543 1993-06-24
US08/080,543 US5515475A (en) 1993-06-24 1993-06-24 Speech recognition method using a two-pass search
PCT/CA1994/000284 WO1995000949A1 (en) 1993-06-24 1994-05-18 Speech recognition method using a two-pass search

Publications (2)

Publication Number Publication Date
CA2163017A1 true CA2163017A1 (en) 1995-01-05
CA2163017C CA2163017C (en) 2000-01-25

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CA002163017A Expired - Fee Related CA2163017C (en) 1993-06-24 1994-05-18 Speech recognition method using a two-pass search

Country Status (6)

Country Link
US (1) US5515475A (en)
EP (1) EP0705473B1 (en)
JP (1) JP3049259B2 (en)
CA (1) CA2163017C (en)
DE (1) DE69420842T2 (en)
WO (1) WO1995000949A1 (en)

Families Citing this family (207)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3453456B2 (en) * 1995-06-19 2003-10-06 キヤノン株式会社 State sharing model design method and apparatus, and speech recognition method and apparatus using the state sharing model
US5706397A (en) * 1995-10-05 1998-01-06 Apple Computer, Inc. Speech recognition system with multi-level pruning for acoustic matching
US5987414A (en) * 1996-10-31 1999-11-16 Nortel Networks Corporation Method and apparatus for selecting a vocabulary sub-set from a speech recognition dictionary for use in real time automated directory assistance
US5839107A (en) * 1996-11-29 1998-11-17 Northern Telecom Limited Method and apparatus for automatically generating a speech recognition vocabulary from a white pages listing
US5987408A (en) * 1996-12-16 1999-11-16 Nortel Networks Corporation Automated directory assistance system utilizing a heuristics model for predicting the most likely requested number
US6122613A (en) * 1997-01-30 2000-09-19 Dragon Systems, Inc. Speech recognition using multiple recognizers (selectively) applied to the same input sample
US5884259A (en) * 1997-02-12 1999-03-16 International Business Machines Corporation Method and apparatus for a time-synchronous tree-based search strategy
JP3962445B2 (en) * 1997-03-13 2007-08-22 キヤノン株式会社 Audio processing method and apparatus
US6236715B1 (en) 1997-04-15 2001-05-22 Nortel Networks Corporation Method and apparatus for using the control channel in telecommunications systems for voice dialing
US5956675A (en) * 1997-07-31 1999-09-21 Lucent Technologies Inc. Method and apparatus for word counting in continuous speech recognition useful for reliable barge-in and early end of speech detection
US6018708A (en) * 1997-08-26 2000-01-25 Nortel Networks Corporation Method and apparatus for performing speech recognition utilizing a supplementary lexicon of frequently used orthographies
US6122361A (en) * 1997-09-12 2000-09-19 Nortel Networks Corporation Automated directory assistance system utilizing priori advisor for predicting the most likely requested locality
US5995929A (en) * 1997-09-12 1999-11-30 Nortel Networks Corporation Method and apparatus for generating an a priori advisor for a speech recognition dictionary
CA2216224A1 (en) * 1997-09-19 1999-03-19 Peter R. Stubley Block algorithm for pattern recognition
US6253178B1 (en) 1997-09-22 2001-06-26 Nortel Networks Limited Search and rescoring method for a speech recognition system
FR2769118B1 (en) * 1997-09-29 1999-12-03 Matra Communication SPEECH RECOGNITION PROCESS
US6253173B1 (en) 1997-10-20 2001-06-26 Nortel Networks Corporation Split-vector quantization for speech signal involving out-of-sequence regrouping of sub-vectors
US6098040A (en) * 1997-11-07 2000-08-01 Nortel Networks Corporation Method and apparatus for providing an improved feature set in speech recognition by performing noise cancellation and background masking
JP3914709B2 (en) * 1997-11-27 2007-05-16 株式会社ルネサステクノロジ Speech recognition method and system
US6182038B1 (en) * 1997-12-01 2001-01-30 Motorola, Inc. Context dependent phoneme networks for encoding speech information
US6963871B1 (en) * 1998-03-25 2005-11-08 Language Analysis Systems, Inc. System and method for adaptive multi-cultural searching and matching of personal names
US8855998B2 (en) 1998-03-25 2014-10-07 International Business Machines Corporation Parsing culturally diverse names
US8812300B2 (en) 1998-03-25 2014-08-19 International Business Machines Corporation Identifying related names
US6052443A (en) * 1998-05-14 2000-04-18 Motorola Alphanumeric message composing method using telephone keypad
US5974121A (en) * 1998-05-14 1999-10-26 Motorola, Inc. Alphanumeric message composing method using telephone keypad
US6137867A (en) * 1998-05-14 2000-10-24 Motorola, Inc. Alphanumeric message composing method using telephone keypad
US6208964B1 (en) 1998-08-31 2001-03-27 Nortel Networks Limited Method and apparatus for providing unsupervised adaptation of transcriptions
SE9802990L (en) * 1998-09-04 2000-03-05 Ericsson Telefon Ab L M Speech recognition method and systems
US6493705B1 (en) * 1998-09-30 2002-12-10 Canon Kabushiki Kaisha Information search apparatus and method, and computer readable memory
DE69941499D1 (en) * 1998-10-09 2009-11-12 Sony Corp Apparatus and methods for learning and applying a distance-transition model
US6148285A (en) * 1998-10-30 2000-11-14 Nortel Networks Corporation Allophonic text-to-speech generator
JP3420965B2 (en) * 1999-02-25 2003-06-30 日本電信電話株式会社 Interactive database search method and apparatus, and recording medium recording interactive database search program
US7058573B1 (en) * 1999-04-20 2006-06-06 Nuance Communications Inc. Speech recognition system to selectively utilize different speech recognition techniques over multiple speech recognition passes
US6542866B1 (en) * 1999-09-22 2003-04-01 Microsoft Corporation Speech recognition method and apparatus utilizing multiple feature streams
US6480827B1 (en) * 2000-03-07 2002-11-12 Motorola, Inc. Method and apparatus for voice communication
US8645137B2 (en) 2000-03-16 2014-02-04 Apple Inc. Fast, language-independent method for user authentication by voice
KR100446289B1 (en) * 2000-10-13 2004-09-01 삼성전자주식회사 Information search method and apparatus using Inverse Hidden Markov Model
ITFI20010199A1 (en) 2001-10-22 2003-04-22 Riccardo Vieri SYSTEM AND METHOD TO TRANSFORM TEXTUAL COMMUNICATIONS INTO VOICE AND SEND THEM WITH AN INTERNET CONNECTION TO ANY TELEPHONE SYSTEM
KR100719942B1 (en) * 2002-03-27 2007-05-18 노키아 코포레이션 Pattern recognition
EP1372139A1 (en) * 2002-05-15 2003-12-17 Pioneer Corporation Speech recognition apparatus and program with error correction
US7191130B1 (en) * 2002-09-27 2007-03-13 Nuance Communications Method and system for automatically optimizing recognition configuration parameters for speech recognition systems
US7117153B2 (en) * 2003-02-13 2006-10-03 Microsoft Corporation Method and apparatus for predicting word error rates from text
US20040186714A1 (en) * 2003-03-18 2004-09-23 Aurilab, Llc Speech recognition improvement through post-processsing
US20040254790A1 (en) * 2003-06-13 2004-12-16 International Business Machines Corporation Method, system and recording medium for automatic speech recognition using a confidence measure driven scalable two-pass recognition strategy for large list grammars
DE102004001212A1 (en) * 2004-01-06 2005-07-28 Deutsche Thomson-Brandt Gmbh Process and facility employs two search steps in order to shorten the search time when searching a database
KR100612839B1 (en) * 2004-02-18 2006-08-18 삼성전자주식회사 Method and apparatus for domain-based dialog speech recognition
US20070005586A1 (en) * 2004-03-30 2007-01-04 Shaefer Leonard A Jr Parsing culturally diverse names
US8924212B1 (en) * 2005-08-26 2014-12-30 At&T Intellectual Property Ii, L.P. System and method for robust access and entry to large structured data using voice form-filling
US8677377B2 (en) 2005-09-08 2014-03-18 Apple Inc. Method and apparatus for building an intelligent automated assistant
US7633076B2 (en) 2005-09-30 2009-12-15 Apple Inc. Automated response to and sensing of user activity in portable devices
US20070132834A1 (en) * 2005-12-08 2007-06-14 International Business Machines Corporation Speech disambiguation in a composite services enablement environment
US7877256B2 (en) * 2006-02-17 2011-01-25 Microsoft Corporation Time synchronous decoding for long-span hidden trajectory model
US9318108B2 (en) 2010-01-18 2016-04-19 Apple Inc. Intelligent automated assistant
KR101415534B1 (en) * 2007-02-23 2014-07-07 삼성전자주식회사 Multi-stage speech recognition apparatus and method
WO2008108232A1 (en) * 2007-02-28 2008-09-12 Nec Corporation Audio recognition device, audio recognition method, and audio recognition program
JP4322934B2 (en) * 2007-03-28 2009-09-02 株式会社東芝 Speech recognition apparatus, method and program
US8977255B2 (en) 2007-04-03 2015-03-10 Apple Inc. Method and system for operating a multi-function portable electronic device using voice-activation
US9053089B2 (en) 2007-10-02 2015-06-09 Apple Inc. Part-of-speech tagging using latent analogy
US8620662B2 (en) 2007-11-20 2013-12-31 Apple Inc. Context-aware unit selection
US10002189B2 (en) 2007-12-20 2018-06-19 Apple Inc. Method and apparatus for searching using an active ontology
US9330720B2 (en) 2008-01-03 2016-05-03 Apple Inc. Methods and apparatus for altering audio output signals
US8065143B2 (en) 2008-02-22 2011-11-22 Apple Inc. Providing text input using speech data and non-speech data
US8996376B2 (en) 2008-04-05 2015-03-31 Apple Inc. Intelligent text-to-speech conversion
US10496753B2 (en) 2010-01-18 2019-12-03 Apple Inc. Automatically adapting user interfaces for hands-free interaction
US8464150B2 (en) 2008-06-07 2013-06-11 Apple Inc. Automatic language identification for dynamic text processing
US20100030549A1 (en) 2008-07-31 2010-02-04 Lee Michael M Mobile device having human language translation capability with positional feedback
US8768702B2 (en) 2008-09-05 2014-07-01 Apple Inc. Multi-tiered voice feedback in an electronic device
US8898568B2 (en) 2008-09-09 2014-11-25 Apple Inc. Audio user interface
US8712776B2 (en) 2008-09-29 2014-04-29 Apple Inc. Systems and methods for selective text to speech synthesis
US8583418B2 (en) 2008-09-29 2013-11-12 Apple Inc. Systems and methods of detecting language and natural language strings for text to speech synthesis
US8676904B2 (en) 2008-10-02 2014-03-18 Apple Inc. Electronic devices with voice command and contextual data processing capabilities
US9959870B2 (en) 2008-12-11 2018-05-01 Apple Inc. Speech recognition involving a mobile device
US8862252B2 (en) 2009-01-30 2014-10-14 Apple Inc. Audio user interface for displayless electronic device
US8380507B2 (en) 2009-03-09 2013-02-19 Apple Inc. Systems and methods for determining the language to use for speech generated by a text to speech engine
US10540976B2 (en) 2009-06-05 2020-01-21 Apple Inc. Contextual voice commands
US10706373B2 (en) 2011-06-03 2020-07-07 Apple Inc. Performing actions associated with task items that represent tasks to perform
US10241644B2 (en) 2011-06-03 2019-03-26 Apple Inc. Actionable reminder entries
US9858925B2 (en) 2009-06-05 2018-01-02 Apple Inc. Using context information to facilitate processing of commands in a virtual assistant
US10241752B2 (en) 2011-09-30 2019-03-26 Apple Inc. Interface for a virtual digital assistant
US9431006B2 (en) 2009-07-02 2016-08-30 Apple Inc. Methods and apparatuses for automatic speech recognition
US8682649B2 (en) 2009-11-12 2014-03-25 Apple Inc. Sentiment prediction from textual data
US8600743B2 (en) 2010-01-06 2013-12-03 Apple Inc. Noise profile determination for voice-related feature
US8311838B2 (en) 2010-01-13 2012-11-13 Apple Inc. Devices and methods for identifying a prompt corresponding to a voice input in a sequence of prompts
US8381107B2 (en) 2010-01-13 2013-02-19 Apple Inc. Adaptive audio feedback system and method
US10553209B2 (en) 2010-01-18 2020-02-04 Apple Inc. Systems and methods for hands-free notification summaries
US10679605B2 (en) 2010-01-18 2020-06-09 Apple Inc. Hands-free list-reading by intelligent automated assistant
US10705794B2 (en) 2010-01-18 2020-07-07 Apple Inc. Automatically adapting user interfaces for hands-free interaction
US10276170B2 (en) 2010-01-18 2019-04-30 Apple Inc. Intelligent automated assistant
DE202011111062U1 (en) 2010-01-25 2019-02-19 Newvaluexchange Ltd. Device and system for a digital conversation management platform
US8682667B2 (en) 2010-02-25 2014-03-25 Apple Inc. User profiling for selecting user specific voice input processing information
US8713021B2 (en) 2010-07-07 2014-04-29 Apple Inc. Unsupervised document clustering using latent semantic density analysis
US8719006B2 (en) 2010-08-27 2014-05-06 Apple Inc. Combined statistical and rule-based part-of-speech tagging for text-to-speech synthesis
US8719014B2 (en) 2010-09-27 2014-05-06 Apple Inc. Electronic device with text error correction based on voice recognition data
US10762293B2 (en) 2010-12-22 2020-09-01 Apple Inc. Using parts-of-speech tagging and named entity recognition for spelling correction
US10515147B2 (en) 2010-12-22 2019-12-24 Apple Inc. Using statistical language models for contextual lookup
US8781836B2 (en) 2011-02-22 2014-07-15 Apple Inc. Hearing assistance system for providing consistent human speech
US9262612B2 (en) 2011-03-21 2016-02-16 Apple Inc. Device access using voice authentication
US20120310642A1 (en) 2011-06-03 2012-12-06 Apple Inc. Automatically creating a mapping between text data and audio data
US10057736B2 (en) 2011-06-03 2018-08-21 Apple Inc. Active transport based notifications
US8812294B2 (en) 2011-06-21 2014-08-19 Apple Inc. Translating phrases from one language into another using an order-based set of declarative rules
US8706472B2 (en) 2011-08-11 2014-04-22 Apple Inc. Method for disambiguating multiple readings in language conversion
US8994660B2 (en) 2011-08-29 2015-03-31 Apple Inc. Text correction processing
US8762156B2 (en) 2011-09-28 2014-06-24 Apple Inc. Speech recognition repair using contextual information
US10134385B2 (en) 2012-03-02 2018-11-20 Apple Inc. Systems and methods for name pronunciation
US9483461B2 (en) 2012-03-06 2016-11-01 Apple Inc. Handling speech synthesis of content for multiple languages
US9280610B2 (en) 2012-05-14 2016-03-08 Apple Inc. Crowd sourcing information to fulfill user requests
US10417037B2 (en) 2012-05-15 2019-09-17 Apple Inc. Systems and methods for integrating third party services with a digital assistant
US8775442B2 (en) 2012-05-15 2014-07-08 Apple Inc. Semantic search using a single-source semantic model
WO2013185109A2 (en) 2012-06-08 2013-12-12 Apple Inc. Systems and methods for recognizing textual identifiers within a plurality of words
US9721563B2 (en) 2012-06-08 2017-08-01 Apple Inc. Name recognition system
US9495129B2 (en) 2012-06-29 2016-11-15 Apple Inc. Device, method, and user interface for voice-activated navigation and browsing of a document
US9576574B2 (en) 2012-09-10 2017-02-21 Apple Inc. Context-sensitive handling of interruptions by intelligent digital assistant
US9547647B2 (en) 2012-09-19 2017-01-17 Apple Inc. Voice-based media searching
US8935167B2 (en) 2012-09-25 2015-01-13 Apple Inc. Exemplar-based latent perceptual modeling for automatic speech recognition
JP2016508007A (en) 2013-02-07 2016-03-10 アップル インコーポレイテッド Voice trigger for digital assistant
US10642574B2 (en) 2013-03-14 2020-05-05 Apple Inc. Device, method, and graphical user interface for outputting captions
US9977779B2 (en) 2013-03-14 2018-05-22 Apple Inc. Automatic supplementation of word correction dictionaries
US9368114B2 (en) 2013-03-14 2016-06-14 Apple Inc. Context-sensitive handling of interruptions
US9733821B2 (en) 2013-03-14 2017-08-15 Apple Inc. Voice control to diagnose inadvertent activation of accessibility features
US10572476B2 (en) 2013-03-14 2020-02-25 Apple Inc. Refining a search based on schedule items
US10652394B2 (en) 2013-03-14 2020-05-12 Apple Inc. System and method for processing voicemail
WO2014144579A1 (en) 2013-03-15 2014-09-18 Apple Inc. System and method for updating an adaptive speech recognition model
US10748529B1 (en) 2013-03-15 2020-08-18 Apple Inc. Voice activated device for use with a voice-based digital assistant
CN105190607B (en) 2013-03-15 2018-11-30 苹果公司 Pass through the user training of intelligent digital assistant
CN112230878A (en) 2013-03-15 2021-01-15 苹果公司 Context-sensitive handling of interrupts
KR101759009B1 (en) 2013-03-15 2017-07-17 애플 인크. Training an at least partial voice command system
US9582608B2 (en) 2013-06-07 2017-02-28 Apple Inc. Unified ranking with entropy-weighted information for phrase-based semantic auto-completion
WO2014197336A1 (en) 2013-06-07 2014-12-11 Apple Inc. System and method for detecting errors in interactions with a voice-based digital assistant
WO2014197334A2 (en) 2013-06-07 2014-12-11 Apple Inc. System and method for user-specified pronunciation of words for speech synthesis and recognition
WO2014197335A1 (en) 2013-06-08 2014-12-11 Apple Inc. Interpreting and acting upon commands that involve sharing information with remote devices
US10176167B2 (en) 2013-06-09 2019-01-08 Apple Inc. System and method for inferring user intent from speech inputs
CN110442699A (en) 2013-06-09 2019-11-12 苹果公司 Operate method, computer-readable medium, electronic equipment and the system of digital assistants
CN105265005B (en) 2013-06-13 2019-09-17 苹果公司 System and method for the urgent call initiated by voice command
JP6163266B2 (en) 2013-08-06 2017-07-12 アップル インコーポレイテッド Automatic activation of smart responses based on activation from remote devices
US20160265332A1 (en) 2013-09-13 2016-09-15 Production Plus Energy Services Inc. Systems and apparatuses for separating wellbore fluids and solids during production
US10296160B2 (en) 2013-12-06 2019-05-21 Apple Inc. Method for extracting salient dialog usage from live data
US9135911B2 (en) * 2014-02-07 2015-09-15 NexGen Flight LLC Automated generation of phonemic lexicon for voice activated cockpit management systems
US9620105B2 (en) 2014-05-15 2017-04-11 Apple Inc. Analyzing audio input for efficient speech and music recognition
US10592095B2 (en) 2014-05-23 2020-03-17 Apple Inc. Instantaneous speaking of content on touch devices
US9484022B2 (en) 2014-05-23 2016-11-01 Google Inc. Training multiple neural networks with different accuracy
US9502031B2 (en) 2014-05-27 2016-11-22 Apple Inc. Method for supporting dynamic grammars in WFST-based ASR
US10289433B2 (en) 2014-05-30 2019-05-14 Apple Inc. Domain specific language for encoding assistant dialog
US9734193B2 (en) 2014-05-30 2017-08-15 Apple Inc. Determining domain salience ranking from ambiguous words in natural speech
US9785630B2 (en) 2014-05-30 2017-10-10 Apple Inc. Text prediction using combined word N-gram and unigram language models
US10170123B2 (en) 2014-05-30 2019-01-01 Apple Inc. Intelligent assistant for home automation
US9633004B2 (en) 2014-05-30 2017-04-25 Apple Inc. Better resolution when referencing to concepts
US9715875B2 (en) 2014-05-30 2017-07-25 Apple Inc. Reducing the need for manual start/end-pointing and trigger phrases
US10078631B2 (en) 2014-05-30 2018-09-18 Apple Inc. Entropy-guided text prediction using combined word and character n-gram language models
US9842101B2 (en) 2014-05-30 2017-12-12 Apple Inc. Predictive conversion of language input
US9966065B2 (en) 2014-05-30 2018-05-08 Apple Inc. Multi-command single utterance input method
US9430463B2 (en) 2014-05-30 2016-08-30 Apple Inc. Exemplar-based natural language processing
US9760559B2 (en) 2014-05-30 2017-09-12 Apple Inc. Predictive text input
US9338493B2 (en) 2014-06-30 2016-05-10 Apple Inc. Intelligent automated assistant for TV user interactions
US10659851B2 (en) 2014-06-30 2020-05-19 Apple Inc. Real-time digital assistant knowledge updates
US10446141B2 (en) 2014-08-28 2019-10-15 Apple Inc. Automatic speech recognition based on user feedback
US9818400B2 (en) 2014-09-11 2017-11-14 Apple Inc. Method and apparatus for discovering trending terms in speech requests
US10789041B2 (en) 2014-09-12 2020-09-29 Apple Inc. Dynamic thresholds for always listening speech trigger
US9668121B2 (en) 2014-09-30 2017-05-30 Apple Inc. Social reminders
US10127911B2 (en) 2014-09-30 2018-11-13 Apple Inc. Speaker identification and unsupervised speaker adaptation techniques
US9886432B2 (en) 2014-09-30 2018-02-06 Apple Inc. Parsimonious handling of word inflection via categorical stem + suffix N-gram language models
US10074360B2 (en) 2014-09-30 2018-09-11 Apple Inc. Providing an indication of the suitability of speech recognition
US9646609B2 (en) 2014-09-30 2017-05-09 Apple Inc. Caching apparatus for serving phonetic pronunciations
US10552013B2 (en) 2014-12-02 2020-02-04 Apple Inc. Data detection
US9711141B2 (en) 2014-12-09 2017-07-18 Apple Inc. Disambiguating heteronyms in speech synthesis
US9865280B2 (en) 2015-03-06 2018-01-09 Apple Inc. Structured dictation using intelligent automated assistants
US9721566B2 (en) 2015-03-08 2017-08-01 Apple Inc. Competing devices responding to voice triggers
US9886953B2 (en) 2015-03-08 2018-02-06 Apple Inc. Virtual assistant activation
US10567477B2 (en) 2015-03-08 2020-02-18 Apple Inc. Virtual assistant continuity
US9899019B2 (en) 2015-03-18 2018-02-20 Apple Inc. Systems and methods for structured stem and suffix language models
US9842105B2 (en) 2015-04-16 2017-12-12 Apple Inc. Parsimonious continuous-space phrase representations for natural language processing
US10083688B2 (en) 2015-05-27 2018-09-25 Apple Inc. Device voice control for selecting a displayed affordance
US10127220B2 (en) 2015-06-04 2018-11-13 Apple Inc. Language identification from short strings
US10101822B2 (en) 2015-06-05 2018-10-16 Apple Inc. Language input correction
US10255907B2 (en) 2015-06-07 2019-04-09 Apple Inc. Automatic accent detection using acoustic models
US11025565B2 (en) 2015-06-07 2021-06-01 Apple Inc. Personalized prediction of responses for instant messaging
US10186254B2 (en) 2015-06-07 2019-01-22 Apple Inc. Context-based endpoint detection
US10671428B2 (en) 2015-09-08 2020-06-02 Apple Inc. Distributed personal assistant
US10747498B2 (en) 2015-09-08 2020-08-18 Apple Inc. Zero latency digital assistant
US9697820B2 (en) 2015-09-24 2017-07-04 Apple Inc. Unit-selection text-to-speech synthesis using concatenation-sensitive neural networks
US10366158B2 (en) 2015-09-29 2019-07-30 Apple Inc. Efficient word encoding for recurrent neural network language models
US11010550B2 (en) 2015-09-29 2021-05-18 Apple Inc. Unified language modeling framework for word prediction, auto-completion and auto-correction
US11587559B2 (en) 2015-09-30 2023-02-21 Apple Inc. Intelligent device identification
US10691473B2 (en) 2015-11-06 2020-06-23 Apple Inc. Intelligent automated assistant in a messaging environment
US10049668B2 (en) 2015-12-02 2018-08-14 Apple Inc. Applying neural network language models to weighted finite state transducers for automatic speech recognition
US10223066B2 (en) 2015-12-23 2019-03-05 Apple Inc. Proactive assistance based on dialog communication between devices
US10446143B2 (en) 2016-03-14 2019-10-15 Apple Inc. Identification of voice inputs providing credentials
US9934775B2 (en) 2016-05-26 2018-04-03 Apple Inc. Unit-selection text-to-speech synthesis based on predicted concatenation parameters
US9972304B2 (en) 2016-06-03 2018-05-15 Apple Inc. Privacy preserving distributed evaluation framework for embedded personalized systems
US10249300B2 (en) 2016-06-06 2019-04-02 Apple Inc. Intelligent list reading
US10049663B2 (en) 2016-06-08 2018-08-14 Apple, Inc. Intelligent automated assistant for media exploration
DK179309B1 (en) 2016-06-09 2018-04-23 Apple Inc Intelligent automated assistant in a home environment
US10586535B2 (en) 2016-06-10 2020-03-10 Apple Inc. Intelligent digital assistant in a multi-tasking environment
US10490187B2 (en) 2016-06-10 2019-11-26 Apple Inc. Digital assistant providing automated status report
US10192552B2 (en) 2016-06-10 2019-01-29 Apple Inc. Digital assistant providing whispered speech
US10509862B2 (en) 2016-06-10 2019-12-17 Apple Inc. Dynamic phrase expansion of language input
US10067938B2 (en) 2016-06-10 2018-09-04 Apple Inc. Multilingual word prediction
DK201670540A1 (en) 2016-06-11 2018-01-08 Apple Inc Application integration with a digital assistant
DK179049B1 (en) 2016-06-11 2017-09-18 Apple Inc Data driven natural language event detection and classification
DK179415B1 (en) 2016-06-11 2018-06-14 Apple Inc Intelligent device arbitration and control
DK179343B1 (en) 2016-06-11 2018-05-14 Apple Inc Intelligent task discovery
US10593346B2 (en) 2016-12-22 2020-03-17 Apple Inc. Rank-reduced token representation for automatic speech recognition
DK179745B1 (en) 2017-05-12 2019-05-01 Apple Inc. SYNCHRONIZATION AND TASK DELEGATION OF A DIGITAL ASSISTANT
DK201770431A1 (en) 2017-05-15 2018-12-20 Apple Inc. Optimizing dialogue policy decisions for digital assistants using implicit feedback
US10896672B2 (en) * 2018-04-16 2021-01-19 Google Llc Automatically determining language for speech recognition of spoken utterance received via an automated assistant interface
US10839793B2 (en) 2018-04-16 2020-11-17 Google Llc Automatically determining language for speech recognition of spoken utterance received via an automated assistant interface
CN112786035A (en) * 2019-11-08 2021-05-11 珠海市一微半导体有限公司 Voice recognition method, system and chip of cleaning robot
CN111754987A (en) * 2020-06-23 2020-10-09 国投(宁夏)大数据产业发展有限公司 Big data analysis voice recognition method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4587670A (en) * 1982-10-15 1986-05-06 At&T Bell Laboratories Hidden Markov model speech recognition arrangement
EP0438662A2 (en) * 1990-01-23 1991-07-31 International Business Machines Corporation Apparatus and method of grouping utterances of a phoneme into context-de-pendent categories based on sound-similarity for automatic speech recognition
US5241619A (en) * 1991-06-25 1993-08-31 Bolt Beranek And Newman Inc. Word dependent N-best search method
US5390278A (en) * 1991-10-08 1995-02-14 Bell Canada Phoneme based speech recognition
US5349645A (en) * 1991-12-31 1994-09-20 Matsushita Electric Industrial Co., Ltd. Word hypothesizer for continuous speech decoding using stressed-vowel centered bidirectional tree searches
US5386492A (en) * 1992-06-29 1995-01-31 Kurzweil Applied Intelligence, Inc. Speech recognition system utilizing vocabulary model preselection

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