Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 6823304 | Speech recognition apparatus and method performing speech recognition with feature parameter preceding lead voiced sound as feature parameter of lead consonant A lead consonant buffer stores a feature parameter preceding a lead voiced sound detected by a voiced sound detector as a feature parameter of a lead consonant. A matching processing unit performs matching processing of a feature parameter of a lead consonant stored... | 11/23/2004 |
| 6823308 | Speech recognition accuracy in a multimodal input system A speech recognition method for use in a multimodal input system comprises receiving a multimodal input comprising digitized speech as a first modality input and data in at least one further modality input. Features in the speech and in the data in at least one furt... | 11/23/2004 |
| 6801892 | Method and system for the reduction of processing time in a speech recognition system using the hidden markov model Disclosed is a speech recognition method in a speech recognition apparatus to applying speech recognition to a voice signal applied thereto. The input voice signal is converted from an analog to a digital signal and sequences of feature vectors are extracted based u... | 10/05/2004 |
| 6801890 | Method for enhancing recognition probability in voice recognition systems The invention relates to a method for enhancing recognition probability in voice recognition systems. According to the inventive method, selective post-training of the already stored homonymic term is carried out after inputting a term to be recognized. This makes i... | 10/05/2004 |
| 6801895 | Method and apparatus for segmenting a multi-media program based upon audio events The present invention provides for a method and apparatus for segmenting a multi-media program based upon audio events. In an embodiment a method of classifying an audio stream is provided. This method includes receiving an audio stream. Sampling the audio stream at... | 10/05/2004 |
| 6789063 | Acoustic modeling using a two-level decision tree in a speech recognition system In some embodiments, the invention involves receiving phonetic samples and assembling a two-level phonetic decision tree structure using the phonetic samples. The decision tree has multiple leaf node levels each having at least one state, wherein a least one node in... | 09/07/2004 |
| 6789066 | Phoneme-delta based speech compression An arrangement is provided for compressing speech data. Speech data is compressed based on a phoneme stream, detected from the speech data, and a delta stream, determined based on the difference between the speech data and a speech signal stream, generated using the... | 09/07/2004 |
| 6789061 | Method and system for generating squeezed acoustic models for specialized speech recognizer Computer-based methods and systems are provided for automatically generating, from a first speech recognizer, a second speech recognizer such that the second speech recognizer is tailored to a certain application and requires reduced resources compared to the first ... | 09/07/2004 |
| 6778959 | System and method for speech verification using out-of-vocabulary models A system and method for speech verification using out-of-vocabulary models includes a speech recognizer that has a model bank with system vocabulary word models, a garbage model, and one or more noise models. The model bank may reject an utterance or other sound as ... | 08/17/2004 |
| 6772120 | Computer method and apparatus for segmenting text streams Computer method and apparatus for segmenting text streams is disclosed. Given is an input text stream formed of a series of words. A probability member provides working probabilities that a group of words is of a topic selected from a plurality of predetermined topi... | 08/03/2004 |
| 6754629 | System and method for automatic voice recognition using mapping A method and system that combines voice recognition engines and resolves differences between the results of individual voice recognition engines using a mapping function. Speaker independent voice recognition engines and speaker-dependent voice recognition engines a... | 06/22/2004 |
| 6735566 | Generating realistic facial animation from speech A system for learning a mapping between time-varying signals is used to drive facial animation directly from speech, without laborious voice track analysis. The system learns dynamical models of facial and vocal action from observations of a face and the facial gest... | 05/11/2004 |
| 6735588 | Information search method and apparatus using Inverse Hidden Markov Model An information search method and apparatus employ an Inverse Hidden Markov Model (IHMM) for stochastically searching for a reference information model among a plurality of predetermined reference information models obtained by training that best matches unknown info... | 05/11/2004 |
| 6728674 | Method and system for training of a classifier A method and a system for corrective training of speech models includes changing a weight of a date sample whenever a data sample is incorrectly associated with a classifier and retraining each classifier with the weights. ... | 04/27/2004 |
| 6725195 | Method and apparatus for probabilistic recognition using small number of state clusters Probabilistic recognition using clusters and simple probability functions provides improved performance by employing a limited number of clusters each using a relatively large number of simple probability functions. The simple probability functions for each of the l... | 04/20/2004 |
| 6714910 | Method of training an automatic speech recognizer Provided is a method of training an automatic speech recognizer, said speech recognizer using acoustic models and/or speech models, wherein speech data is collected during a training phase and used to improve the acoustic models, said method comprising: during the t... | 03/30/2004 |
| 6708149 | Vector fixed-lag algorithm for decoding input symbols The present invention discloses an apparatus and method of decoding information received over a noisy communications channel to determine the intended transmitted information. The present invention uses a vector fixed-lag algorithm to determine the probabilities of ... | 03/16/2004 |
| 6697778 | Speaker verification and speaker identification based on a priori knowledge Client speaker locations in a speaker space are used to generate speech models for comparison with test speaker data or test speaker speech models. The speaker space can be constructed using training speakers that are entirely separate from the population... | 02/24/2004 |
| 6691090 | Speech recognition system including dimensionality reduction of baseband frequency signals A method for use in a speech recognition system in which a speech waveform to be modelled is represented by a set of feature extracted parameters in the time domain, the method comprising dividing individual ones of one or more of said feature extracted p... | 02/10/2004 |
| 6681207 | System and method for lossy compression of voice recognition models A method and system that improves voice recognition by improving storage of voice recognition (VR) templates. The improved storage means that more VR models can be stored in memory. The more VR models that are stored in memory, the more robust the VR syst... | 01/20/2004 |
| 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 |
| 6662160 | Adaptive speech recognition method with noise compensation An adaptive speech recognition method with noise compensation is disclosed. In speech recognition, optimal equalization factors for feature vectors of a plurality of speech frames corresponding to each probability density function in a speech model are de... | 12/09/2003 |
| 6662158 | Temporal pattern recognition method and apparatus utilizing segment and frame-based models A method and apparatus is provided for identifying patterns from a series of feature vectors representing a time-varying signal. The method and apparatus use both a frame-based model and a segment model in a unified framework. The frame-based model determ... | 12/09/2003 |
| 6658385 | Method for transforming HMMs for speaker-independent recognition in a noisy environment On improved transformation method uses an initial set of Hidden Markov Models (HMMs) trained on a large amount of speech recorded in a low noise environment R to provide rich information on co-articulation and speaker variation and a smaller database in a... | 12/02/2003 |
| 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 |
| 6633842 | Speech recognition front-end feature extraction for noisy speech An estimate of clean speech vector, typically Mel-Frequency Cepstral Coefficient (MFCC) given its noisy observation is provided. The method makes use of two Gaussian mixtures. The first one is trained on clean speech and the second is derived from the fir... | 10/14/2003 |
| 6606595 | HMM-based echo model for noise cancellation avoiding the problem of false triggers An automatic speech recognition system for the condition that an incoming caller's speech is quiet and a resulting echo (of a loud playing prompt) can cause the residual (the portion of the echo remaining after even echo cancellation) to be of the magnitu... | 08/12/2003 |
| 6594393 | Dynamic programming operation with skip mode for text line image decoding In a text recognition system, the computational efficiency of a text line image decoding operation is improved by utilizing the characteristic of a graph known as the cut set. The branches of the data structure that represents the image are initially labe... | 07/15/2003 |
| 6594392 | Pattern recognition based on piecewise linear probability density function The present invention is a method and apparatus to determine a similarity measure between first and second patterns. First and second storages store first and second feature vectors which represent the first and second patterns, respectively. A similarity... | 07/15/2003 |
| 6594630 | Voice-activated control for electrical device An apparatus for voice-activated control of an electrical device comprises a receiving arrangement for receiving audio data generated by user. A vioce recognition arrangement is provided for determining whether the received audio data is a command word fo... | 07/15/2003 |
| 6591237 | Keyword recognition system and method A keyword recognition system for speaker dependent, dynamic time warping (DTW) recognition systems uses all of the trained word templates in the system, (keyword and vocabulary), to determine if an utterance is a keyword utterance or not. The utterance is... | 07/08/2003 |
| 6587844 | System and methods for optimizing networks of weighted unweighted directed graphs Unweighted finite state automata may be used in speech recognition systems, but considerably reduce the speed and accuracy of the speech recognition system. Unfortunately, developing a suitable training corpus for a speech recognition task is time consumi... | 07/01/2003 |
| 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 |
| 6571210 | Confidence measure system using a near-miss pattern A method and system of performing confidence measure in a speech recognition system includes receiving an utterance of input speech and creating a near-miss pattern or a near-miss list of possible word entries for the utterance. Each word entry includes a... | 05/27/2003 |
| 6556969 | Low complexity speaker verification using simplified hidden markov models with universal cohort models and automatic score thresholding A low complexity speaker verification system that employs universal cohort models an automatic score thresholding. The universal cohort models are generated using a simplified cohort model generating scheme. In certain embodiments of the invention, a simp... | 04/29/2003 |
| 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 |
| 6529872 | Method for noise adaptation in automatic speech recognition using transformed matrices The improved noise adaptation technique employs a linear or non-linear transformation to the set of Jacobian matrices corresponding to an initial noise condition. An -adaptation parameter or artificial intelligence operation is employed in a linear... | 03/04/2003 |
| 6526170 | Character recognition system A character recognition system is disclosed, In a feature extraction parameter storage section 22 a transformation matrix for reducing a number of dimensions of feature parameters and a codebook for quantization are stored. In an HMM storage section 23 a ... | 02/25/2003 |
| 6526381 | Remote control with speech recognition A processor-based system may utilize a remote control unit which not only allows mouse input commands to be provided to the processor-based system but also includes a microphone and a speech engine for decoding spoken commands and providing code for prese... | 02/25/2003 |
| 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 |
