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5309547 Method of speech recognition  
A method of speech recognition includes the steps of analyzing input speech every frame and deriving feature parameters from the input speech, generating an input vector from the feature parameters...
5280532 N:1 bit compression apparatus and method  
An N:1 data compression system for compressing data on N DS1 trunks carrying 4N channels is disclosed. Waveform encoding circuitry is coupled to the N DS1 trunks for compressing the DS1 data into x...
5274739 Product code memory Itakura-Saito (MIS) measure for sound recognition  
A SOUND RECOGNITION PROCESS comprises training a sound recognition system to a shape Hidden Markov Model (HMM) from a shape codebook of shape codewords, and to a separate gain HMM from a gain...
5274737 Reference pattern adapting device trainable by a small number of training patterns  
In a reference pattern adapting device for adapting reference pattern parameter groups (1-M) to adapted reference pattern parameter groups (1-M) by using training patterns (1-L) derived from a...
5159637 Speech word recognizing apparatus using information indicative of the relative significance of speech features  
An isolated speech word recognizer for recognizing an input pattern as one of a plurality of known patterns, comprising a similarity information storing unit for storing similarity information...
5140668 Phoneme recognition utilizing relative positions of reference phoneme patterns and input vectors in a feature space  
In a phoneme recognition apparatus, first distances between input vectors and reference vectors are determined. If the first distances are lower than a threshold value, the input vectors are...
5136654 Vocabulary partitioned speech recognition apparatus  
The speech recognition system disclosed herein operates to select, from a collection of tokens which represent vocabulary words, those tokens which most closely match an unknown spoken word. The...
4942608 Pattern recognition apparatus using a composite similarity method  
A pattern recognition apparatus is constituted by a feature data extraction section, a RAM for storing feature data, a memory for storing standard pattern data, an arithmetic section for performing...
4907276 Fast search method for vector quantizer communication and pattern recognition systems  
An encoder apparatus for communication and pattern recognition systems employing a nearest neighbor search method for signal and data compression, based on a vector encoding quantization technique...
4901352 Pattern matching method using restricted matching paths and apparatus therefor  
Pattern matching, for speech recognition, wherein distances are determined between the input pattern and many reference patterns. However the distances are determined with the reference pattern at...
4888823 System for continuous speech recognition through transition networks  
Phoneme feature parameters are extracted from input digital speech signals by means of LPC analysis. Phonetic segments having phonetical meanings are obtained together with similarities to...
4885791 Apparatus for speech recognition  
Disclosed is a speech recognition apparatus comprising: a speech analysis portion for extracting parameters necessary for determination of spoken words; a speech period detecting portion for...
4868879 Apparatus and method for recognizing speech  
In a speech recognition system for effecting substantially linear matching, a start point of an input speech pattern is detected to start counting the frames of the input speech pattern for...
4852172 Speech recognition system  
A speech recognition system for recognizing the words spoken by identified speakers and unidentified speakers, based upon the use of three dimensional, polar coordinate expressions of formant...
4837830 Multiple parameter speaker recognition system and methods  
An apparatus operates to identify the speech signal of an unknown speaker as one of a finite number of speakers. Each speaker is modeled and recognized with any example of their speech. The input...
4829575 Apparatus and methods for analyzing transitions in finite state machines  
In speech recognition words to be recognized may be represented by finite state machines and recognition is based on analyzing transitions through the machines as an utterance occurs. One value...
4820059 Speech processing apparatus and methods  
Speech processing apparatus and methods utilizing a circuit for electronically deriving from speech over time a series of coordinate values representing positions of points on a path in a...
4799262 Speech recognition  
In a speech recognition system disclosed herein, acoustic speech waveforms are initially analyzed to obtain, at successive sample times, digital frames of speech information. This initial analysis...
4797929 Word recognition in a speech recognition system using data reduced word templates  
Described herein, is an arrangement and method for processing speech information in a speech recognition system (300). In such a system where the speech information is depicted as words, each word...
4792976 Pattern recognizing device with pattern matching in slant parallelogrammic blocks of widths dependent on classified reference pattern lengths  
On pattern matching an input pattern arranged along a first time axis to each concatenation of patterns selected from reference patterns and arranged along a second time axis with feature vectors...
4763278 Speaker-independent word recognizer  
Speaker-independent word recognition is performed, based on a small acoustically distinct vocabulary, with minimal hardware requirements. After a simple preconditioning filter, the zero crossing...
4720864 Speech recognition apparatus  
This invention relates to a speech recognition apparatus for raising the recognition speed, which is provided with first and second processors, the first processor mainly carrying out feature...
4715004 Pattern recognition system  
In speech recognition, an unknown input signal is analyzed for its feature pattern sequence A i which is compared to prestored reference patterns grouped in categories. Each category m has a...
4608708 Pattern matching system  
A pattern matching system comparing two patterns A and B, at least one of which is compressed in accordance with a piecewise straight line approximation and is represented by a series of...
4601054 Pattern distance calculating equipment  
A pattern recognition apparatus for recognizing spoken words of a nonspecific speaker or of a specific speaker. A reference pattern composed of a sequence of feature vectors, each composed of n...
4592085 Speech-recognition method and apparatus for recognizing phonemes in a voice signal  
Phoneme recognition uses the silence-phoneme and phoneme-phoneme transition spectral information rather than the phoneme information itself. The transition detector features first and second...
4571697 Apparatus for calculating pattern dissimilarity between patterns  
Apparatus for calculating the distance between two patterns, each given in the form of time sequences of vectors, by using the distance between a feature vector of one pattern and a line segment...
4528688 Continuous speech recognition method  
This speech signal recognition system compares the two-dimensionals pattern (time sequence of feature vectors) of an unknown signal to prestored standard references patterns for recognition, thus...
4490839 Method and arrangement for sound analysis  
For sound analysis, especially for speaker identification, a long-term spectrum is often formed from the recorded signal and compared to a long-term spectrum of a previously recorded signal. When...
4479236 Pattern matching device operable with signals of a compressed dynamic range  
A pattern matching device generally comprises a first circuit (36) for calculating an elementary similarity measure between two feature vectors, one and the other selected from two feature vector...
4426551 Speech recognition method and device  
Speech sound recognition is made using a reduced number of speech parameter elements, e.g., five correlation coefficients rather than sixteen spectral coefficients. The five correlation...
4405838 Phoneme information extracting apparatus  
A phoneme information extracting apparatus includes correlation data generators for successively generating correlation data representing the correlation between the acoustic power spectrum data...
4400828 Word recognizer  
An input word is recognized as one of a set of reference words. A set of word distance signals representative of the correspondence of the input word to the reference words is generated. A set of...
4363102 Speaker identification system using word recognition templates  
In a speaker recognition and verification arrangement, acoustic feature templates are stored for predetermined reference words. Each template is a standardized set of acoustic features for one...
4326101 System for recognizing a word sequence by dynamic programming and by the use of a state transition diagram  
Operation of a continuous speech recognition system operable according to the dynamic programming technique, is controlled by a state transition diagram in compliance with which word sequences to...
4292471 Method of verifying a speaker  
An improved method of verifying the speaker from whom long term spectral characteristics have been derived during a learning phase. Mean values and distance thresholds have been calculated and...
4256924 Device for recognizing an input pattern with approximate patterns used for reference patterns on mapping  
In a speech recognition system which time-normalizes (i.e. aligns by time-warping) each pre-stored reference pattern of feature vectors b j before comparison with the input signal pattern vectors...
3700815 AUTOMATIC SPEAKER VERIFICATION BY NON-LINEAR TIME ALIGNMENT OF ACOUSTIC PARAMETERS  
Speaker verification, as opposed to speaker identification, is carried out by matching a sample of a person's speech with a reference version of the same text derived from prerecorded samples of...
3673331 IDENTITY VERIFICATION BY VOICE SIGNALS IN THE FREQUENCY DOMAIN  
Voice verification is accomplished at a plurality of spaced apart facilities each having a plurality of terminals. Multiplexing structure interconnects the terminals through a communications link...
Matches 101 - 139 out of 139 < 1 2 3