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| Number | Title | Issue Date |
| 8000959 | Formants extracting method combining spectral peak picking and roots extraction In a formants extracting method capable of precisely obtaining formants as resonance frequencies of voice with less computational complexity, the method includes searching a maximum value by a spectral peak-picking method, judging whether the number of formants corr... | 08/16/2011 |
| 7957959 | Method and apparatus for processing speech data with classification models A method for processing speech data includes obtaining a pitch and at least one formant frequency for each of a plurality of first speech data; constructing a first feature space with the obtained fundamental frequencies and formant frequencies as features; and clas... | 06/07/2011 |
| 7933768 | Vocoder system and method for vocal sound synthesis A vocoder system for improving the performance expression of an output sound while lightening the computational load. The system includes formant detection means and division means in which the center frequencies have been fixed. The modulation level with which the ... | 04/26/2011 |
| 7881926 | Joint estimation of formant trajectories via bayesian techniques and adaptive segmentation The invention relates to the field of automated processing of speech signals and particularly to a method for tracking the formant frequencies in a speech signal, comprising the steps of: obtaining an auditory image of the speech signal; sequentially estimating form... | 02/01/2011 |
| 7818169 | Formant frequency estimation method, apparatus, and medium in speech recognition A formant frequency estimation method which is important information in speech recognition by accelerating a spectrum using a pitch frequency, and an apparatus using the method is provided. That is, the formant frequency estimation method includes preprocessing an i... | 10/19/2010 |
| 7818168 | Method of measuring degree of enhancement to voice signal A method of measuring the degree of enhancement made to a voice signal by receiving the voice signal, identifying formant regions in the voice signal, computing stationarity for each identified formant region, enhancing the voice signal, identifying formant regions ... | 10/19/2010 |
| 7756703 | Formant tracking apparatus and formant tracking method A formant tracking apparatus and a formant tracking method are provided. The formant tracking apparatus includes: a framing unit dividing an input voice signal into a plurality of frames; a linear prediction analyzing unit obtaining linear prediction coefficients fo... | 07/13/2010 |
| 7676362 | Method and apparatus for enhancing loudness of a speech signal A speech filter (108) enhances the loudness of a speech signal by expanding the formant regions of the speech signal beyond a natural bandwidth of the formant regions. The energy level of the speech signal is maintained so that the filtered speech signal cont... | 03/09/2010 |
| 7672838 | Systems and methods for speech recognition using frequency domain linear prediction polynomials to form temporal and spectral envelopes from frequency domain representations of signals In accordance with the present invention, computer implemented methods and systems are provided for representing and modeling the temporal structure of audio signals. In response to receiving a signal, a time-to-frequency domain transformation on at least a portion ... | 03/02/2010 |
| 7653535 | Learning statistically characterized resonance targets in a hidden trajectory model A statistical trajectory speech model is constructed where the targets for vocal tract resonances are represented as random vectors and where the mean vectors of the target distributions are estimated using a likelihood function for joint acoustic observation vector... | 01/26/2010 |
| 7643989 | Method and apparatus for vocal tract resonance tracking using nonlinear predictor and target-guided temporal restraint A method and apparatus map a set of vocal tract resonant frequencies, together with their corresponding bandwidths, into a simulated acoustic feature vector in the form of LPC cepstrum by calculating a separate function for each individual vocal tract resonant frequ... | 01/05/2010 |
| 7627468 | Apparatus and method for extracting syllabic nuclei An apparatus enabling automatic determination of a portion that reliably represents a feature of a speech waveform includes: an acoustic/prosodic analysis unit calculating, from data, distribution of an energy of a prescribed frequency range of the speech waveform o... | 12/01/2009 |
| 7606702 | Speech decoder, speech decoding method, program and storage media to improve voice clarity by emphasizing voice tract characteristics using estimated formants A code separation/decoding unit restores a vocal tract characteristic sp1 and a vocal source signal r1. A vocal tract characteristic modification unit modifies the vocal tract characteristic sp1 and outputs the modified vocal tract c... | 10/20/2009 |
| 7546237 | Bandwidth extension of narrowband speech A system extends the bandwidth of a narrowband speech signal into a wideband spectrum. The system includes a high-band generator that generates a high frequency spectrum based on a narrowband spectrum. A background noise generator generates a high frequency backgrou... | 06/09/2009 |
| 7519531 | Speaker adaptive learning of resonance targets in a hidden trajectory model of speech coarticulation A computer-implemented method is provided for training a hidden trajectory model, of a speech recognition system, which generates Vocal Tract Resonance (VTR) targets. The method includes obtaining generic VTR target parameters corresponding to a generic speaker used... | 04/14/2009 |
| 7475011 | Greedy algorithm for identifying values for vocal tract resonance vectors A method and apparatus identify values for components of a vocal tract resonance vector by sequentially determining values for each component of the vocal tract resonance vector. To determine a value for a component, the other components are set to static values. A ... | 01/06/2009 |
| 7424423 | Method and apparatus for formant tracking using a residual model A method of tracking formants defines a formant search space comprising sets of formants to be searched. Formants are identified for a first frame in the speech utterance by searching the entirety of the formant search space using the codebook, and for the remaining... | 09/09/2008 |
| 7376562 | Method and apparatus for nonlinear frequency analysis of structured signals The present invention relates to systems and methods for processing acoustic signals, such as music and speech. The method involves nonlinear frequency analysis of an incoming acoustic signal. In one aspect, a network of nonlinear oscillators, each with a distinct f... | 05/20/2008 |
| 7366656 | Method apparatus and system for processing acoustic signals A method of identifying patterns in a digitized acoustic signal is disclosed. The method comprises: (i) converting the digitized acoustic signal into a spatial representation being defined by a plurality of regions on a vibrating membrane, each the regions having a ... | 04/29/2008 |
| 7359519 | Method and apparatus for compensating for nonlinear distortion of speaker system A method and an apparatus for compensating for nonlinear distortion are provided to divide audio signals reproduced in a nonlinear speaker system into linear and nonlinear components in a time domain and a frequency domain, and then generate inversely-corrected sign... | 04/15/2008 |
| 7353169 | Transient detection and modification in audio signals A system and method are disclosed for transient detection and modification in audio signals. Digital signal processing techniques are used to detect transients and modify an audio signal to enhance or suppress such transients, as desired. A transient audio event is ... | 04/01/2008 |
| 7336779 | Topical dynamic chat The present invention is directed to a customer contact 100 in which a session monitor 140 identifies and implements multi-customer sessions. A conferencing function 136 connects the plurality of customers 110-118 simultaneously to... | 02/26/2008 |
| 7337112 | Digital signal coding and decoding methods and apparatuses and programs therefor At the coder side, bits of samples of each frame of an input digital signal are concatenated every digit common to the samples across each frame to generate equi-order bit sequences, which are output as packets. At the decoding side, the input equi-order sequences a... | 02/26/2008 |
| 7337107 | Perceptual harmonic cepstral coefficients as the front-end for speech recognition Pitch estimation and classification into voiced, unvoiced and transitional speech were performed by a spectro-temporal auto-correlation technique. A peak picking formula was then employed. A weighting function was then applied to the power spectrum. The harmonics we... | 02/26/2008 |
| 7330813 | Speech processing apparatus and mobile communication terminal A speech processing apparatus able to enhance formants more naturally, wherein a speech analyzing unit analyzes an input speech signal to find LPCs and converts the LPCs to LSPs, a speech decoding unit calculates a distance between adjacent orders of the LSPs by an ... | 02/12/2008 |
| 7292981 | Signal variation feature based confidence measure A method for predicting a misrecognition in a speech recognition system, is based on; the insight that variations in a speech input signal are different depending on the origin of the signal being a speech or a non-speech event. The method comprises steps for receiv... | 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 |
| 7272559 | Noninvasive detection of neuro diseases Noninvasive, remote methods and apparatus for detecting early phases of neuro diseases such as the non-tremor phase of Parkinson's disease, dyskinesia, dyslexia and neuroatrophy, etc., are disclosed. Five words spoken either directly into a microphone connected to a... | 09/18/2007 |
| 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 |
| 7245608 | Codec aware adaptive playout method and playout device A codec aware adaptive playout method estimates playout delays for a current packet based on a loss mean opinion score (LMOS), a delay mean opinion score (DMOS), and a mean mean opinion score (MMOS) of packets with reference to the codec used in voice over Internet ... | 07/17/2007 |
| 7233899 | Speech recognition system using normalized voiced segment spectrogram analysis Computer comparison of one or more dictionary entries with a sound record of a human utterance to determine whether and where each dictionary entry is contained within the sound record. The record is segmented, and for each vocalized segment a spectrogram is obtaine... | 06/19/2007 |
| 7222075 | Detecting emotions using voice signal analysis A system and method are provided for detecting emotional states using statistics. First, a speech signal is received. At least one acoustic parameter is extracted from the speech signal. Then statistics or features from samples of the voice are calculated from extra... | 05/22/2007 |
| 7219061 | Method for detecting the time sequences of a fundamental frequency of an audio response unit to be synthesized Predetermined macrosegments of the fundamental frequency are determined by a neural network, and these predefined macrosegments are reproduced by fundamental-frequency sequences stored in a database. The fundamental frequency is generated on the basis of a relativel... | 05/15/2007 |
| 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 |
| 7181395 | Methods and apparatus for automatic generation of multiple pronunciations from acoustic data Methods and apparatus for automatically deriving multiple phonetic baseforms of a word from a speech utterance of this word are provided in accordance with the present invention. In one embodiment, a method of automatically generating two or more phonetic baseforms ... | 02/20/2007 |
| 7177803 | Method and apparatus for enhancing loudness of an audio signal Human hearing perceives loudness based on critical bands corresponding to different frequency ranges. As a sound's frequency spectrum increases beyond a critical band into a previously unexcited critical band, the perception is that the sound has increased in loudne... | 02/13/2007 |
| 7165033 | Apparatus and methods for detecting emotions in the human voice The present invention relates to an apparatus for monitoring emotional states of an individual by using a voice analysis of said individual. The apparatus comprises a voice analyzer operative to input speech specimens, comprising an analog to digital converter opera... | 01/16/2007 |
| 7158909 | Method and system for testing spas A test system and method for testing a spa system which includes a spa tub for holding water, an electronic controller system which controls the spa system functions, and one or more controlled devices. The system and method exercises the controlled devices during a... | 01/02/2007 |
| 7155313 | Robot apparatus A robot apparatus is provided. A CPU 15 determines an output of a feeling model based on signals supplied from a touch sensor 20. The CPU 15 also deciphers whether or not an output value of the feeling model exceeds a pre-set threshold value. If... | 12/26/2006 |
| 7155312 | Robot apparatus A robot apparatus is provided. A CPU 15 determines an output of a feeling model based on signals supplied from a touch sensor 20. The CPU 15 also deciphers whether or not an output value of the feeling model exceeds a pre-set threshold value. If... | 12/26/2006 |
