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| Number | Title | Issue Date |
| 7437288 | Speech recognition apparatus A speech recognition apparatus using a probability model that employs a mixed distribution, the apparatus formed by a standard pattern storage means for storing a standard pattern; a recognition means for outputting recognition results corresponding to an input spee... | 10/14/2008 |
| 7342581 | Method and apparatus for displaying 3-D state indicators A method for presenting a user selected status of an object in a three dimensional graphic display is disclosed. The method includes the step of receiving a request to select a property of an object for display. The method further includes the step of displaying at ... | 03/11/2008 |
| 7315893 | Method and apparatus for filtering messages based on context A method for reporting alert conditions is disclosed which includes defining alert filter criteria, identifying an alert condition, analyzing one or more properties of the alert condition based on the alert filter criteria, and determining whether to report the aler... | 01/01/2008 |
| 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 |
| 7219056 | Determining and using acoustic confusability, acoustic perplexity and synthetic acoustic word error rate Two statistics are disclosed for determining the quality of language models. These statistics are called acoustic perplexity and the synthetic acoustic word error rate (SAWER), and they depend upon methods for computing the acoustic confusability of words. It is pos... | 05/15/2007 |
| 7194019 | Multi-pulse multi-delay (MPMD) multiple access modulation for UWB A new modulation scheme in UWB communications is introduced. This modulation technique utilizes multiple orthogonal transmitted-reference pulses for UWB channelization. The proposed UWB receiver samples the second order statistical function at both zero and non-zero... | 03/20/2007 |
| 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 |
| 7165028 | Method of speech recognition resistant to convolutive distortion and additive distortion A speech recognizer operating in both ambient noise (additive distortion) and microphone changes (convolutive distortion) is provided. For each utterance to be recognized the recognizer system adapts HMM mean vectors with noise estimates calculated from pre-utteranc... | 01/16/2007 |
| 7117148 | Method of 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... | 10/03/2006 |
| 7107210 | Method of noise reduction based on dynamic aspects of speech A system and method are provided that reduce noise in pattern recognition signals. To do this, embodiments of the present invention utilize a prior model of dynamic aspects of clean speech together with one or both of a prior model of static aspects of clean speech,... | 09/12/2006 |
| 7103540 | Method of pattern recognition using noise reduction uncertainty A method and apparatus are provided for using the uncertainty of a noise-removal process during pattern recognition. In particular, noise is removed from a representation of a portion of a noisy signal to produce a representation of a cleaned signal. In the meantime... | 09/05/2006 |
| 4833712 | Automatic generation of simple Markov model stunted baseforms for words in a vocabulary In a system that (i) defines each word in a vocabulary by a fenemic baseform of fenemic phones, (ii) defines an alphabet of composite phones each of which corresponds to at least one fenemic phone, and (iii) generates a string of fenemes in response to sp... | 05/23/1989 |
