Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 8160875 | System and method for improving robustness of speech recognition using vocal tract length normalization codebooks Disclosed are systems, methods, and computer readable media for performing speech recognition. The method embodiment comprises selecting a codebook from a plurality of codebooks with a minimal acoustic distance to a received speech sample, the plurality of codebooks... | 04/17/2012 |
| 8112274 | Method of determining model-specific factors for pattern recognition, in particular for speech patterns A method for recognizing a pattern that comprises a set of physical stimuli, said method comprising the steps of: providing a set of training observations and through applying a plurality of association models ascertaining various ... | 02/07/2012 |
| 7987090 | Sound-source separation system A system capable of reducing the influence of sound reverberation or reflection to improve sound-source separation accuracy. An original signal X(ω,f) is separated from an observed signal Y(ω,f) according to a first model and a second model to extract an unknown s... | 07/26/2011 |
| 7930178 | Speech modeling and enhancement based on magnitude-normalized spectra A frame of a speech signal is converted into the spectral domain to identify a plurality of frequency components and an energy value for the frame is determined. The plurality of frequency components is divided by the energy value for the frame to form energy-normal... | 04/19/2011 |
| 7835909 | Method and apparatus for normalizing voice feature vector by backward cumulative histogram A method and apparatus for normalizing a histogram utilizing a backward cumulative histogram which can cumulate a probability distribution function in an order from a greatest to smallest value so as to estimate a noise robust histogram. A method of normalizing a sp... | 11/16/2010 |
| 7797158 | System and method for improving robustness of speech recognition using vocal tract length normalization codebooks Disclosed are systems, methods, and computer readable media for performing speech recognition. The method embodiment comprises selecting a codebook from a plurality of codebooks with a minimal acoustic distance to a received speech sample, the plurality of codebooks... | 09/14/2010 |
| 7797157 | Automatic speech recognition channel normalization based on measured statistics from initial portions of speech utterances Channel normalization for automatic speech recognition is provided. Statistics are measured from an initial portion of a speech utterance. Feature normalization parameters are estimated based on the measured statistics and a statistically derived mapping relating me... | 09/14/2010 |
| 7725316 | Applying speech recognition adaptation in an automated speech recognition system of a telematics-equipped vehicle A speech recognition adaptation method for a vehicle having a telematics unit with an embedded speech recognition system. Speech is received and pre-processed to generate acoustic feature vectors, and an adaptation parameter is applied to the acoustic feature vector... | 05/25/2010 |
| 7702505 | Channel normalization apparatus and method for robust speech recognition A channel normalization apparatus includes: a characteristic extraction unit extracting MFCC characteristics and outputting rows of frames according to time; a characteristic parameter average calculation unit calculating an average value of the rows of the outputte... | 04/20/2010 |
| 7630892 | Method and apparatus for transducer-based text normalization and inverse text normalization A method and apparatus are provided that perform text normalization and inverse text normalization using a single grammar. During text normalization, a finite state transducer identifies a second string of symbols from a first string of symbols it receives. During i... | 12/08/2009 |
| 7409343 | Verification score normalization in a speaker voice recognition device During a learning phase, a speech recognition device generates parameters of an acceptance voice model relating to a voice segment spoken by an authorized speaker and a rejection voice model. It uses normalization parameters to normalize a speaker verification score... | 08/05/2008 |
| 7359857 | Method and system of correcting spectral deformations in the voice, introduced by a communication network A technique for correcting the voice spectral deformations introduced by a communication network. Prior to the operation of equalization of the voice signal of a speaker, the constitution of classes of speakers is communicated, with one voice reference per class. Th... | 04/15/2008 |
| 7356466 | Method and apparatus for performing observation probability calculations A method and apparatus for calculating an observation probability includes a first operation unit that subtracts a mean of a first plurality of parameters of an input voice signal from a second parameter of an input voice signal, and multiplies the subtraction resul... | 04/08/2008 |
| 7356471 | Adjusting sound characteristic of a communication network using test signal prior to providing communication to speech recognition server A voice recognition system has a vehicle unit, which is a communication terminal, and a voice recognition server. The voice recognition server recognizes a voice signal received from the vehicle unit. A sound characteristic of a communication channel for providing c... | 04/08/2008 |
| 7340396 | Method and apparatus for providing a speaker adapted speech recognition model set Speech feature vectors (10) are provided and utilized to develop a corresponding estimated speaker dependent speech feature space model (20) (in one embodiment, it is not necessary that this model (20) have defined correlations with the verbal c... | 03/04/2008 |
| 7328154 | Bubble splitting for compact acoustic modeling An improved method is provided for constructing compact acoustic models for use in a speech recognizer. The method includes: partitioning speech data from a plurality of training speakers according to at least one speech related criteria (i.e., vocal tract length); ... | 02/05/2008 |
| 7324941 | Method and apparatus for discriminative estimation of parameters in maximum a posteriori (MAP) speaker adaptation condition and voice recognition method and apparatus including these A method and apparatus for discriminative estimation of parameters in a maximum a posteriori (MAP) speaker adaptation condition, and a voice recognition apparatus having the apparatus and a voice recognition method using the method are provided. The method for discr... | 01/29/2008 |
| 7319960 | Speech recognition method and system A speech recognition system uses a phoneme counter to determine the length of a word to be recognized. The result is used to split a lexicon into one or more sub-lexicons containing only words which have the same or similar length to that of the word to be recognize... | 01/15/2008 |
| 7318022 | Method and apparatus for training a translation disambiguation classifier A method of training a classifier includes applying a first classifier to a first set of unlabeled data to form a first set of labeled data. The first classifier is able to assign data to classes in a first set of classes. A second classifier is applied to a second ... | 01/08/2008 |
| 7310600 | Language recognition using a similarity measure A dynamic programming technique is provided for matching two sequences of phonemes both of which may be generated from text or speech. The scoring of the dynamic programming matching technique uses phoneme confusion scores, phoneme insertion scores and phoneme delet... | 12/18/2007 |
| 7310599 | Removing noise from feature vectors A method and computer-readable medium are provided for identifying clean signal feature vectors from noisy signal feature vectors. Aspects of the invention use mixtures of distributions of noise feature vectors and/or channel distortion feature vectors when identify... | 12/18/2007 |
| 7292977 | Systems and methods for providing online fast speaker adaptation in speech recognition A system (230) performs speaker adaptation when performing speech recognition. The system (230) receives an audio segment and identifies the audio segment as a first audio segment or a subsequent audio segment associated with a speaker turn. The system... | 11/06/2007 |
| 7292974 | Method for recognizing speech with noise-dependent variance normalization As the application of a variance normalization (VN) to a speech signal (S) may be advantageous as well as disadvantageous with respect to the recognition rate in a speech recognizing process in dependence of the degree of the signal disturbance it is suggested to ca... | 11/06/2007 |
| 7283962 | Methods and systems for detecting, measuring, and monitoring stress in speech As disclosed herein, the present invention provides methods and systems for detecting, measuring, or monitoring the presence of absence of at least one emotion in a subject from a speech sample obtained from the subject. In particular, the methods and systems of the... | 10/16/2007 |
| 7269556 | Pattern recognition Pattern recognition, wherein a sequence of feature vectors is formed from a digitized incoming signal, the feature vectors comprising feature vector components, and at least one feature vector is compared with templates of candidate patterns by computing a distortio... | 09/11/2007 |
| 7269555 | Unsupervised incremental adaptation using maximum likelihood spectral transformation In a speech recognition system, a method of transforming speech feature vectors associated with speech data provided to the speech recognition system includes the steps of receiving likelihood of utterance information corresponding to a previous feature vector trans... | 09/11/2007 |
| 7254536 | Method of noise reduction using correction and scaling vectors with partitioning of the acoustic space in the domain of noisy speech A method and apparatus are provided for reducing noise in a training signal and/or test signal. The noise reduction technique uses a stereo signal formed of two channel signals, each channel containing the same pattern signal. One of the channel signals is “cleanâ... | 08/07/2007 |
| 7240207 | Fingerprinting media entities employing fingerprint algorithms and bit-to-bit comparisons A system and methods for the creation, management, and distribution of media entity fingerprinting are provided. In connection with a system that convergently merges perceptual and digital signal processing analysis of media entities for purposes of classifying the ... | 07/03/2007 |
| 7219055 | Speech recognition apparatus and method adapting best transformation function to transform one of the input speech and acoustic model The present invention relates to a speech recognition apparatus for recognizing speeches of a plurality of users with high accuracy. An adapting unit 12 detects a best transformation function for adapting an input speech to an acoustic model from at least one... | 05/15/2007 |
| 7219059 | Automatic pronunciation scoring for language learning A method and apparatus for generating a pronunciation score by receiving a user phrase intended to conform to a reference phrase and processing the user phrase in accordance with at least one of an articulation-scoring engine, a duration scoring engine and an intona... | 05/15/2007 |
| 7216076 | System and method of pattern recognition in very high-dimensional space A system and method of recognizing speech comprises an audio receiving element and a computer server. The audio receiving element and the computer server perform the process steps of the method. The method involves training a stored set of phonemes by converting the... | 05/08/2007 |
| 7206389 | Method and apparatus for generating a speech-recognition-based call-routing system A computerized method is provided for electronically directing a call to a class, such that an utterance spoken by a speaker and received by a call-routing system is classified by the call-routing system as being associated with the class, such that the call-routing... | 04/17/2007 |
| 7197456 | On-line parametric histogram normalization for noise robust speech recognition A method for improving noise robustness in speech recognition, wherein a front-end is used for extracting speech feature from an input speech and for providing a plurality of scaled spectral coefficients. The histogram of the scaled spectral coefficients is normaliz... | 03/27/2007 |
| 7191118 | 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) space is dete... | 03/13/2007 |
| 7181390 | Noise reduction using correction vectors based on dynamic aspects of speech and noise normalization A method and apparatus are provided for reducing noise in a signal. Under one aspect of the invention, a correction vector is selected based on a noisy feature vector that represents a noisy signal. The selected correction vector incorporates dynamic aspects of patt... | 02/20/2007 |
| 7174292 | Method of determining uncertainty associated with acoustic distortion-based noise reduction A method and apparatus are provided for determining uncertainty in noise reduction based on a parametric model of speech distortion. The method is first used to reduce noise in a noisy signal. In particular, noise is reduced from a representation of a portion of a n... | 02/06/2007 |
| 7158126 | Acoustic based pointing device An acoustic based pointing device and a system and method for using the pointing device to move a cursor on a display screen of a display device. The pointing device comprises an acoustic source that generates and propagates an acoustic signal that is detected by fo... | 01/02/2007 |
| 7146317 | Speech recognition device with reference transformation means A speech recognition device (8), to which can be applied over a first receive channel (21) and a second receive channel (25, 28) speech information (SI) that is colored by the respective receive channel (21, 25, 28), comprises reference s... | 12/05/2006 |
| 7136459 | Methods and apparatus for data caching to improve name recognition in large namespaces Systems and techniques for improved efficiency and accuracy in voice dialing and directory lookup applications. A voice dialing module receives an input from a user and examines a directory to identify recognition results matching the voice input. A list of recognit... | 11/14/2006 |
| 7127046 | Voice-activated call placement systems and methods System and method for deriving call routing information utilizing a network control data base system and voice recognition for matching spoken word sound patterns to routing numbers needed to set up calls. Public access is provided to a common database via a common ... | 10/24/2006 |
