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| Number | Title | Issue Date |
| 6694296 | Method and apparatus for the recognition of spelled spoken words The speech recognizer includes a dictation language model providing a dictation model output indicative of a likely word sequence recognized based on an input utterance. A spelling language model provides a spelling model output indicative of a likely let... | 02/17/2004 |
| 6691091 | Method for additive and convolutional noise adaptation in automatic speech recognition using transformed matrices A noise adaptation system and method provide for noise adaptation in a speech recognition system. The method includes the steps of generating a reference model based on a training speech signal, and compensating the reference model for additive noise in t... | 02/10/2004 |
| 6691088 | Method of determining parameters of a statistical language model An apparatus and method of determining parameters of a statistical language model for automatic speech recognition systems using a training corpus are disclosed. To improve the perplexity and the error rate in the speech recognition, at least a proportion... | 02/10/2004 |
| 6678658 | Speech processing using conditional observable maximum likelihood continuity mapping A computer implemented method enables the recognition of speech and speech characteristics. Parameters are initialized of first probability density functions that map between the symbols in the vocabulary of one or more sequences of speech codes that repr... | 01/13/2004 |
| 6671669 | combined engine system and method for voice recognition A method and system that combines voice recognition engines and resolves any differences between the results of individual voice recognition engines. A speaker independent (SI) Hidden Markov Model (HMM) engine, a speaker independent Dynamic Time Warping (... | 12/30/2003 |
| 6662159 | Recognizing speech data using a state transition model Detecting an unknown word in input speech data reduces the search space and the memory capacity for the unknown word. For this purpose, an HMM data memory stores data describing a state transition mode for the unknown word, defined by a number of states a... | 12/09/2003 |
| 6634887 | Methods and systems for tutoring using a tutorial model with interactive dialog Methods and systems are provided for tutoring a student in solving a problem described in the form of a dialog with a student involving questions posed to the student and analysis of student responses. The method employs a student model for receiving and ... | 10/21/2003 |
| 6633845 | Music summarization system and method The invention provides a method and apparatus for automatically generating a summary or key phrase for a song. The song, or a portion thereof, is digitized and converted into a sequence of feature vectors, such mel-frequency cepstral coefficients (MFCCs).... | 10/14/2003 |
| 6629066 | Method and system for building and running natural language understanding systems A computerized method for building and running natural language understanding systems, wherein a natural language understanding system takes a sentence as input and returns some representation of the possible meanings of the sentence as output (the "inter... | 09/30/2003 |
| 6629069 | Speech recognizer using database linking A speech recogniser is provided for identifying entries in a database. Results from the recognition of a user's speech are combined with each other and optionally with reference to data in the database in order to maximise the accuracy of an identified en... | 09/30/2003 |
| 6598019 | Evaluation method, apparatus, and recording medium using optimum template pattern determination method, apparatus and optimum template pattern To improve the precision in correction of an input sentence by using a template pattern for model sentence. A plurality of template patterns for the model sentence are provided beforehand. Each of the template patterns is regarded as a plurality of templa... | 07/22/2003 |
| 6598017 | Method and apparatus for recognizing speech information based on prediction An apparatus for recognizing sound information includes a sound recognition unit for recognizing sound information. A knowledge base stores knowledge concerning a type of data represented by the sound information. A prediction unit predicts the type of da... | 07/22/2003 |
| 6591236 | Method and system for determining available and alternative speech commands A method and system for use with a computer speech recognition system to efficiently identify valid system commands to users. The method involves a series of steps including: receiving data representative of a speech recognition system user input; compari... | 07/08/2003 |
| 6587820 | INFORMATION PROCESSING APPARATUS AND METHOD, A COMPUTER READABLE MEDIUM STORING A CONTROL PROGRAM FOR MAKING A COMPUTER IMPLEMENTED INFORMATION PROCESS, AND A CONTROL PROGRAM FOR SELECTING A SPECIFIC GRAMMAR CORRESPONDING TO AN ACTIVE INPUT FIELD OR FOR CONTROLLING SELECTION OF A GRAMMAR OR COMPRISING A CODE OF A SELECTION STEP OF SELECTING A SPECIFIC GRAMMAR An information processing apparatus inputs a document having a plurality of input items, and displays it using an information display unit. An active input field is discriminated from the plurality of input fields in accordance with the display state of t... | 07/01/2003 |
| 6574595 | Method and apparatus for recognition-based barge-in detection in the context of subword-based automatic speech recognition Robust, multi-faceted sub-word method for rapidly and reliably detecting a barge-in condition of a speaker talking while an automated audio prompt is being played. This sub-word method allows for rapid stopping of the prompt to improve automatic speech re... | 06/03/2003 |
| 6574597 | Fully expanded context-dependent networks for speech recognition A large vocabulary speech recognizer including a combined weighted network of transducers reflecting fully expanded context-dependent modeling of pronunciations and language that can be used with a single-pass Viterbi or other coder based on sequences of ... | 06/03/2003 |
| 6571208 | Context-dependent acoustic models for medium and large vocabulary speech recognition with eigenvoice training A reduced dimensionality eigenvoice analytical technique is used during training to develop context-dependent acoustic models for allophones. The eigenvoice technique is also used during run time upon the speech of a new speaker. The technique removes ind... | 05/27/2003 |
| 6571209 | Disabling and enabling of subvocabularies in speech recognition systems A method for designating a subvocabulary for speech recognition systems includes the steps of providing a vocabulary of words each having a flag with a first value, selecting words to be eliminated from the vocabulary, setting the flags of the selected wo... | 05/27/2003 |
| 6553342 | Tone based speech recognition A method and apparatus for speech recognition involves classifying (38) a digitized speech segment according to whether the speech segment comprises voiced or unvoiced speech and utilizing that classification to generate tonal feature vectors (41) of the ... | 04/22/2003 |
| 6542866 | Speech recognition method and apparatus utilizing multiple feature streams A method and apparatus is provided for using multiple feature streams in speech recognition. In the method and apparatus, a feature extractor generates at least two feature vectors for a segment of an input signal. A decoder then generates a path score th... | 04/01/2003 |
| 6539351 | High dimensional acoustic modeling via mixtures of compound gaussians with linear transforms A method is provided for generating a high dimensional density model within an acoustic model for one of a speech and a speaker recognition system. Acoustic data obtained from at least one speaker is transformed into high dimensional feature vectors. The ... | 03/25/2003 |
| 6539353 | Confidence measures using sub-word-dependent weighting of sub-word confidence scores for robust speech recognition A method and apparatus is provided for speech recognition. The method and apparatus convert an analog speech signal into a digital signal and extract at least one feature from the digital signal. A hypothesis word string that consists of sub-word units is... | 03/25/2003 |
| 6535849 | Method and system for generating semi-literal transcripts for speech recognition systems A method for generating a semi-literal transcript from a partial transcript of recorded speech. The method includes augmenting the partial transcript with words from one of a filled pause model and a background model to build an augmented probabilistic fi... | 03/18/2003 |
| 6526380 | Speech recognition system having parallel large vocabulary recognition engines A huge vocabulary speech recognition system for recognizing a sequence of spoken words, having an input means for receiving a time-sequential input pattern representative of the sequence of spoken words. The system further includes a plurality of large vo... | 02/25/2003 |
| 6526379 | Discriminative clustering methods for automatic speech recognition The discriminative clustering technique tests a provided set of Gaussian distributions corresponding to an acoustic vector space. A distance metric, such as the Bhattacharyya distance, is used to assess which distributions are sufficiently proximal to be ... | 02/25/2003 |
| 6523005 | Method and configuration for determining a descriptive feature of a speech signal A method and also a configuration for determining a descriptive feature of a speech signal, in which a first speech model is trained with a first time pattern and a second speech model is trained with a second time pattern. The second speech model is init... | 02/18/2003 |
| 6519562 | Dynamic semantic control of a speech recognition system A method and apparatus are provided for automatically recognizing words of spoken speech using a computer-based speech recognition system according to a dynamic semantic model. In an embodiment, the speech recognition system recognizes speech and generate... | 02/11/2003 |
| 6510410 | Method and apparatus for recognizing tone languages using pitch information A method and an apparatus for automatic recognition of tone languages, employing the steps of converting the words of speech into an electrical signal, generating spectral features from the electrical signal, extracting pitch values from the electrical si... | 01/21/2003 |
| 6505157 | Apparatus and method for generating processor usable data from natural language input data Apparatus generates data in processor usable form from natural language input data units in different unit categories. Input data categorized into categories generates data units having unit identification data and corresponding unit category data for inp... | 01/07/2003 |
| 6502072 | Two-tier noise rejection in speech recognition A method and apparatus is provided for two-tier noise rejection in speech recognition. The method and apparatus convert an analog speech signal into a digital signal and extract features from the digital signal. A hypothesis speech word and a hypothesis n... | 12/31/2002 |
| 6502073 | Low data transmission rate and intelligible speech communication A method of processing speech representative of ideograms for speech communication using an asynchronous communication channel (21) is disclosed. The method includes the step of processing speech units of a speech and data indicative of the speech units. ... | 12/31/2002 |
| 6502075 | Auto attendant having natural names database library An automated telephone operator platform (e.g., an auto attendant) has a natural names library associated therewith. The natural names library comprises a large database of audio files representing common objects expected to be recognized by a telephone-b... | 12/31/2002 |
| 6499012 | Method and apparatus for hierarchical training of speech models for use in speaker verification A method and apparatus for generating a pair of data elements is provided suitable for use in a speaker verification system. The pair includes a first element representative of a speaker independent template and a second element representative of an exten... | 12/24/2002 |
| 6490558 | System and method for improving the accuracy of a speech recognition program through repetitive training A system and method for quickly improving the accuracy of a speech recognition program. The system is based on a speech recognition program that automatically converts a pre-recorded audio file into a written text. The system parses the written text into ... | 12/03/2002 |
| 6484136 | Language model adaptation via network of similar users A language recognition system, method and program product for recognizing language based input from computer users on a network of connected computers. Each computer includes at least one user based language model trained for a corresponding user for auto... | 11/19/2002 |
| 6483896 | Speech recognition using telephone call parameters A speech recognition system recognizes a telephone call parameter dependent word received during a telephone call. The recognition system extracts a telephone call parameter (e.g., the telephone number from where the telephone call originated, the time of... | 11/19/2002 |
| 6477488 | Method for dynamic context scope selection in hybrid n-gram+LSA language modeling A method and system for dynamic language modeling of a document are described. In one embodiment, a number of local probabilities of a current document are computed and a vector representation of the current document in a latent semantic analysis (LSA) sp... | 11/05/2002 |
| 6473735 | System and method for speech verification using a confidence measure The present invention comprises a system and method for speech verification using a confidence measure that includes a speech verifier which compares a differential score for a recognized word to a predetermined threshold value, where a recognized word is... | 10/29/2002 |
| 6463413 | Speech recognition training for small hardware devices A distributed speech processing system for constructing speech recognition reference models that are to be used by a speech recognizer in a small hardware device, such as a personal digital assistant or cellular telephone. The speech processing system inc... | 10/08/2002 |
| 6456971 | Systems and methods for determinizing and minimizing a finite state transducer for pattern recognition A pattern recognition system and method for optimal reduction of redundancy and size of a weighted and labeled graph presents receiving speech signals, converting the speech signals into word sequence, interpreting the word sequences in a graph where the ... | 09/24/2002 |
