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| Number | Title | Issue Date |
| 5222146 | Speech recognition apparatus having a speech coder outputting acoustic prototype ranks A speech coding and speech recognition apparatus. The value of at least one feature of an utterance is measured over each of a series of successive time intervals to produce a series of feature vector signals. The closeness of the feature value of each fe... | 06/22/1993 |
| 5142585 | Speech processing apparatus and methods Speech processing apparatus has a store containing a reference vocabulary of words and carries out active word selection in accordance with mode data supplied to the apparatus. After this, the apparatus performs dynamic template adaptation in dependence o... | 08/25/1992 |
| 5127055 | Speech recognition apparatus & method having dynamic reference pattern adaptation A speech recognition apparatus having reference pattern adaptation stores a plurality of reference patterns representing speech to be recognized, each stored reference pattern having associated therewith a quality value representing the effectiveness of t... | 06/30/1992 |
| 5123049 | Pattern recognition apparatus with retrieval reference patterns A pattern recognition apparatus includes a pattern memory unit for storing a pattern set constituted by a plurality of reference patterns and a comparison unit for comparing an input pattern with each reference pattern stored in the pattern memory unit in... | 06/16/1992 |
| 5050215 | Speech recognition method For circumstance adaption, for example, speaker adaption, confusion coefficients between the labels of the label alphabet for initial training and those for adaption are determined by alignment of adaption speech with the corresponding initially trained M... | 09/17/1991 |
| 5046099 | Adaptation of acoustic prototype vectors in a speech recognition system In a speech recognition system, the prior parameters of acoustic prototype vectors are adapted to a new speaker to obtain posterior parameters by having the speaker utter a set of adaptation words. The prior parameters of an acoustic prototype vector are ... | 09/03/1991 |
| 5040213 | Method of renewing reference pattern stored in dictionary A reference pattern renewing method includes inputting an input pattern of an utterance of a word, comparing the input pattern with reference patterns stored in a dictionary memory to thereby generate at least a first candidate having the highest degree o... | 08/13/1991 |
| 5027406 | Method for interactive speech recognition and training 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 m... | 06/25/1991 |
| 4829577 | Speech recognition method Speaker adaptation which enables a person to use a Hidden Markov model type recognizer previously trained by another person or persons. During initial training, parameters of Markov models are calculated iteratively by, for example, using the Forward-Back... | 05/09/1989 |
| 4827522 | Pattern recognition apparatus for determining a reference pattern by K-L expansion utilizing a power method Disclosed is a pattern recognition and learning apparatus which compares an input pattern with a reference patterns to recognize a category of the input pattern, and learns a reference pattern from input patterns of a specific category. Learning of input ... | 05/02/1989 |
| 4817156 | Rapidly training a speech recognizer to a subsequent speaker given training data of a reference speaker Apparatus and method for training the statistics of a Markov Model speech recognizer to a subsequent speaker who utters part of a training text after the recognizer has been trained for the statistics of a reference speaker who utters a full training text... | 03/28/1989 |
| 4783809 | Automatic speech recognizer for real time operation A speech recognizer identifies an unknown utterance as a variable length string of stored reference patterns in a single pass through the time frame sequence of utterance feature signals. A plurality of reference pattern levels are used to permit strings ... | 11/08/1988 |
| 4776017 | Dual-step sound pattern matching A sound or speech recognition system is made faster by first using data-reduced patterns to find candidates in preliminary testing, and then making a final decision by testing against full-data patterns. Specifically, a signal is transformed to a time-seq... | 10/04/1988 |
| 4720802 | Noise compensation arrangement Adaptive speech recognition is improved by extracting an estimate of the background noise during unknown speech input, and using the noise estimate to modify the noiseless prestored reference speech signals for comparison with the input. Averaged values o... | 01/19/1988 |
| 4651289 | Pattern recognition apparatus and method for making same In a pattern recognition system for speech or print, a first memory stores predetermined reference vectors. A second memory stores subsequently-determined reference vectors subsequent to misrecognition when a new speaker or font is inputted, whereby only ... | 03/17/1987 |
| 4618984 | Adaptive automatic discrete utterance recognition Adaptive training of a system for discrete utterance recognition during continuous speech permits single prototype utterances to be adapted to the needs of the talker, during operation, without tedious multiple recitation for training of prototypes. Initi... | 10/21/1986 |
| 4489435 | Method and apparatus for continuous word string recognition A speech recognition method and apparatus for recognizing word strings in a continuous audio signal are disclosed. The word strings are made up of a plurality of elements, and each element, generally a word, is represented by an element template defined b... | 12/18/1984 |
| 4479241 | Self-organizing circuits for automatic pattern recognition and the like and systems embodying the same Self-organizing circuits to receive input signals from transducers and the like and operable, under guidance from other inputs thereto, to operate in a learning mode and systems embodying such self-organizing circuits.... | 10/23/1984 |
| 4297528 | Training circuit for audio signal recognition computer A signal pattern recognition system includes a reference pattern memory storing plural reference data patterns against which input patterns are compared for recognition. The reference data patterns are formed by merging training patterns together. Each tr... | 10/27/1981 |
| 4292470 | Audio signal recognition computer A signal encoder and classifier particularly adapted to speech recognition includes a circularly addressed buffer which is independently addressed by a new data writing address system and a buffered data reading system so that writing and reading of data ... | 09/29/1981 |
