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7263074 |
Voice activity detection based on far-end and near-end statistics
Methods and apparatus of managing a communication system, wherein a decision regarding a level of activity at a first end is made based at least in part on the level of activity at the second end....
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7260527 |
Speech recognizing apparatus and speech recognizing method
A recognizing target vocabulary comparing unit calculates a compared likelihood of a recognizing target vocabulary, i.e., a compared likelihood of a registered vocabulary, by using the time series...
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7260209 |
Methods and apparatus for improving voice quality in an environment with noise
A method for improving a downlink signal received by a listener on a phone is disclosed. The method includes calculating an environment noise level of the listener and filtering and adjusting gain...
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7260528 |
System and method for obtaining reliable speech recognition coefficients in noisy environment
The present invention provides a method and a system for determining reliable speech recognition coefficients in noisy environment, which can increase the recognition rate in a noisy environment,...
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7254532 |
Method for making a voice activity decision
The invention relates to a method for determining voice activity in a signal section of an audio signal. The result, i.e., whether voice activity is present in the section of the signal thus...
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7254537 |
Speech input device
A speech input device is provided with a microphone which inputs speech, a key entry detector which detects an operation of a key section which serves as a man-machine interface, and a noise...
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7243063 |
Classifier-based non-linear projection for continuous speech segmentation
A method segments an audio signal including frames into non-speech and speech segments. First, high-dimensional spectral features are extracted from the audio signal. The high-dimensional features...
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7243068 |
Microphone setup and testing in voice recognition software
Systems, devices, and methods for performing a microphone test routine are disclosed during an initial setup of a speech recognition program and at a predetermined time intervals during use of the...
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7243060 |
Single channel sound separation
The speech of two or more simultaneous speakers (or other simultaneous sounds) conveyed in a single channel are distinguished. Joint acoustic/modulation frequency analysis and display tools are...
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7236930 |
Method to extend operating range of joint additive and convolutive compensating algorithms
The operating range of joint additive and convolutive compensating method is extended by enhanced channel estimation procedure that adds SNR-dependent inertia and SNR-dependent limit on the channel...
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7236929 |
Echo suppression and speech detection techniques for telephony applications
Various methods and apparatus are described for implementing effective echo suppression in a wide variety of telephony system architectures. These methods and apparatus include broadband and...
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7231346 |
Speech section detection apparatus
A speech section detection apparatus capable of reliably detecting a speech section even for a word containing a glottal stop sound or for a word containing a succession of “s” column sounds or...
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7231347 |
Acoustic signal enhancement system
A signal enhancement system improves the quality of a noisy input signal. The system finds a low noise signal model which best matches the noisy input signal. Noisy portions of the input signal are...
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7231348 |
Tone detection algorithm for a voice activity detector
There is provided a voice activity detection method for indicating an active voice mode and an inactive voice mode. The method comprises receiving an input signal having a plurality of frames,...
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7228274 |
Recognition of identification patterns
The invention relates to a method and to a device for identifying markers in data blocks. The method is characterized in that a number of data blocks ( 201 a 201 n ) are received by a receiver (...
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7224981 |
Speech recognition of mobile devices
Speech recognition in mobile processor-based devices may be improved by using location information. Location information may be derived from on-board hardware or from information provided remotely....
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7224810 |
Noise reduction system
The disclosure includes description of a method of noise reduction according to one possible implementation. An audio signal is sampled at a sample rate f. The audio signal is converted to a...
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7225124 |
Methods and apparatus for multiple source signal separation
A technique for separating a signal associated with a first source from a mixture of the first source signal and a signal associated with a second source comprises the following steps/operations....
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7225125 |
Speech recognition system trained with regional speech characteristics
A speech recognition system uses speech recognition models which are specifically trained and optimized for users residing in a particular geographic area or region. The speech models are trained...
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7219062 |
Speech activity detection using acoustic and facial characteristics in an automatic speech recognition system
An automatic speech recognizer only responsive to acoustic speech utterances is activated only in response to acoustic energy having a spectrum associated with the speech utterances and at least...
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7216075 |
Speech recognition method and apparatus with noise adaptive standard pattern
In a speech recognition method, at least two standard feature vector series having different signal-to-noise ratios (SNRs) are prepared in advance for each category. Then, an SNR is calculated from...
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7212969 |
Dynamic generation of voice interface structure and voice content based upon either or both user-specific contextual information and environmental information
The invention generally relates to a method, apparatus, and system capable of changing the voice user interface of the system based upon user-specific contextual information. The voice processing...
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7212966 |
Voice recognition apparatus for vehicle
A speech recognition apparatus for a vehicle is provided for decreasing the feeling of discomfort of the operator even in the case that speech recognition is continuously impossible over several...
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7212965 |
Robust parameters for noisy speech recognition
A method of automatic processing of noise-affected speech captures and digitizes speech in the form of at least one digitised signal and extracts several time-based sequences or frames...
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7209881 |
Preparing acoustic models by sufficient statistics and noise-superimposed speech data
Noise-superimposed speech data is grouped according to acoustic similarity, and sufficient statistics are prepared using the speech data in each of the groups. A group acoustically similar to voice...
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7209567 |
Communication system with adaptive noise suppression
A signal-to-noise ratio dependent adaptive spectral subtraction process eliminates noise from noise-corrupted speech signals. The process first pre-emphasizes the frequency components of the input...
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7206986 |
Method for replacing corrupted audio data
A decoding method for coded data representing original data. Corrupted data is detected and replaced with buffered data. The buffered data is stored in the buffer a time interval corresponding to...
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7203643 |
Method and apparatus for transmitting speech activity in distributed voice recognition systems
A system and method for transmitting speech activity in a distributed voice recognition system. The distributed voice recognition system includes a local VR engine in a subscriber unit and a server...
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7203640 |
System and method for determining an intended signal section candidate and a type of noise section candidate
An input signal is input via an input part. A plurality of signal section candidate detecting parts having different detection algorithms detect an intended signal section candidate and a noise...
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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...
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7191122 |
Speech compression system and method
The invention improves the encoding and decoding of speech by focusing the encoding on the perceptually important characteristics of speech. The system analyzes selected features of an input speech...
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7191128 |
Method and system for distinguishing speech from music in a digital audio signal in real time
The present invention relates to method and system for distinguishing speech from music in a digital audio signal in real time. A method for distinguishing speech from music in a digital audio...
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7191124 |
Voice input and output apparatus with balancing among sound pressures at control points in a sound field
A voice input and output apparatus is comprised of a voice output section that produces a sound field by outputting a sound on the basis of a voice output signal. A voice signal control section...
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7191127 |
System and method for speech enhancement
A method and apparatus for reducing noise in a speech signal. A handset or remote unit provides to users with a hearing deficiency, a first mode of operation where noise suppressant/speech...
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7187656 |
Method and system for processing tones to reduce false detection of fax and modem communications
A tone processing method and communications system which reduce the probability of falsely detecting modem and facsimile communications that occur on a communications link. The link connects a...
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7184955 |
System and method for indexing videos based on speaker distinction
A system and method for indexing multimedia files utilizes audio characteristics of predefined audio content contained in selected multimedia segments of the multimedia files to distinguish the...
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7177808 |
Method for improving speaker identification by determining usable speech
Method for improving speaker identification by determining usable speech. Degraded speech is preprocessed in a speaker identification (SID) process to produce SID usable and SID unusable segments....
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7171359 |
Speech recognition over lossy networks with rejection threshold
Recognizing a stream of speech received as speech vectors over a lossy communications link includes constructing for a speech recognizer a series of speech vectors from packets received over a...
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7167828 |
Multimode speech coding apparatus and decoding apparatus
Square sum calculator 603 calculates a square sum of evolution in smoothed quantized LSP parameter for each order. A first dynamic parameter is thereby obtained. Square sum calculator 605 ...
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7165026 |
Method of noise estimation using incremental bayes learning
A method and apparatus estimate additive noise in a noisy signal using incremental Bayes learning, where a time-varying noise prior distribution is assumed and hyperparameters (mean and variance)...
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7165027 |
Method of controlling devices via speech signals, more particularly, in motorcars
The invention relates to a method of controlling function units of a motorcar or of devices ( 1 a, 1 b ) installed in a motorcar, via speech signals, in which acoustic signals occurring in the...
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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...
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7162421 |
Dynamic barge-in in a speech-responsive system
A method and system for barge-in acknowledgement are disclosed. A prompt is attenuated upon detection of speech. The speech is accepted and the prompt is terminated if the speech corresponds to an...
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7155388 |
Method and apparatus for characterizing inhalation noise and calculating parameters based on the characterization
A method for characterizing inhalation noise within a pressurized air delivery system, the method including the steps of: generating an inhalation noise model ( 912, 1012 ) based on inhalation...
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7149685 |
Audio signal processing for speech communication
A device receives a signal that includes human-interpretable audio information. The device detects sound locally and analyzes it to determine if an intermittent component is present. If the...
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7146314 |
Dynamic adjustment of noise separation in data handling, particularly voice activation
Data handling dynamically responds to changing noise power conditions to separate valid data from noise. A reference power level acts as a threshold between dynamically assumed noise and valid...
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7146316 |
Noise reduction in subbanded speech signals
The presence of speech in a filtered speech signal is detected for the purpose of suspending noise level calculations during periods of speech. A received speech signal is split into a plurality of...
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7146315 |
Multichannel voice detection in adverse environments
A multichannel source activity detection system, e.g., a voice activity detection (VAD) system, and method that exploits spatial localization of a target audio source is provided. The method...
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7139336 |
Method and system for channel estimation using iterative estimation and detection
A method and system are directed to enabling a detector to perform relatively accurate channel estimates on blocks of data that include relatively short training sequences in wireless communication...
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7139701 |
Method for detecting and attenuating inhalation noise in a communication system
A method for detecting and attenuating inhalation noise in a communication system coupled to a pressurized air delivery system, the method including the steps of: generating an inhalation noise...
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