Matches 1 - 50 out of 138 1 2 3 >


Match Document Document Title
US20150154980 CEPSTRAL SEPARATION DIFFERENCE  
A method for characterization of a human speech comprises performing (220) of a discrete transform on a speech sample of the human speech. A speech logarithmic power spectrum is created (222) by...
US20130262097 SYSTEMS AND METHODS FOR AUTOMATED SPEECH AND SPEAKER CHARACTERIZATION  
Systems and methods utilize individually selected modulation spectral features for speech and speaker characterization. The method involves construction of a sparse feature space and a method of...
US20110218799 DECODER FOR AUDIO SIGNAL INCLUDING GENERIC AUDIO AND SPEECH FRAMES  
A method for decoding audio frames includes producing a first frame of coded audio samples, producing at least a portion of a second frame of coded audio samples, generating audio gap filler...
US20120089389 Flexible and Scalable Combined Innovation Codebook for Use in CELP Coder and Decoder  
In a CELP coder, a combined innovation codebook coding device comprises a pre-quantizer of a first, adaptive-codebook excitation residual, and a CELP innovation-codebook search module responsive...
US20100070268 MULTIMODAL UNIFICATION OF ARTICULATION FOR DEVICE INTERFACING  
A system for a multimodal unification of articulation includes a voice signal modality to receive a voice signal, and a control signal modality which receives an input from a user and generates a...
US20110184733 SYSTEM AND METHOD FOR ENCODING AND DECODING PULSE INDICES  
Methods, and corresponding codec-containing devices are provided that have source coding schemes for encoding a component of an excitation. In some cases, the source coding scheme is an...
US20140025374 SPEECH ENHANCEMENT TO IMPROVE SPEECH INTELLIGIBILITY AND AUTOMATIC SPEECH RECOGNITION  
The present invention provides a system and method to enhance speech intelligibility and improve the detection rate of automatic speech recognizer in noisy environments. The present invention...
US20110015922 Speech Intelligibility Improvement Method and Apparatus  
Prevalence detection is advantageously applied to the result of specific spectral discrimination to adaptively determine prevalent frequencies existing within an audio signal containing speech....
US20150112669 REGULARIZED FEATURE SPACE DISCRIMINATION ADAPTATION  
A method and apparatus are provided for training a transformation matrix of a feature vector for an acoustic model. The method includes training the transformation matrix of the feature vector....
US20090094022 APPARATUS FOR CREATING SPEAKER MODEL, AND COMPUTER PROGRAM PRODUCT  
A transformation-parameter calculating unit calculates a first model parameter indicating a parameter of a speaker model for causing a first likelihood for a clean feature to maximum, and...
US20140142930 ADAPTATIONS OF ANALYSIS OR SYNTHESIS WEIGHTING WINDOWS FOR TRANSFORM CODING OR DECODING  
A method and device are provided for coding or decoding a digital audio signal by transform using analysis or synthesis weighting windows applied to sample frames. The method includes an irregular...
US20080208571 Maximum-Likelihood Universal Speech Iconic Coding-Decoding System (MUSICS)  
This application for patent describes an invention toward achieving potentially hundred- to thousand-fold enhancement in the efficiency of the utilization of frequency-bandwidth for digital...
US20110119054 APPARATUS FOR ENCODING AND DECODING OF INTEGRATED SPEECH AND AUDIO  
Provided is an apparatus for integrally encoding and decoding a speech signal and an audio signal. An encoding apparatus for integrally encoding a speech signal and an audio signal, may include: a...
US20130246054 SPEECH SIGNAL ENCODING METHOD AND SPEECH SIGNAL DECODING METHOD  
A speech signal encoding method and a speech signal decoding method are provided. The speech signal encoding method includes the steps of specifying an analysis frame in an input signal;...
US20140074459 AUTOMATIC CONVERSION OF SPEECH INTO SONG, RAP OR OTHER AUDIBLE EXPRESSION HAVING TARGET METER OR RHYTHM  
Captured vocals may be automatically transformed using advanced digital signal processing techniques that provide captivating applications, and even purpose-built devices, in which mere novice...
US20090030676 METHOD OF DERIVING A COMPRESSED ACOUSTIC MODEL FOR SPEECH RECOGNITION  
A method of deriving a compressed acoustic model for speech recognition is disclosed herein. In a described embodiment, the method comprises transforming an acoustic model into an eigenspace at...
US20140114651 DEVICE AND METHOD FOR EXECUTION OF HUFFMAN CODING  
In this invention, the design of the Huffman table can be done offline with a large input sequence database. The range of the quantization indices (or differential indices) for Huffman coding is...
US20130339010 SPEECH DECODER, SPEECH ENCODER, SPEECH DECODING METHOD, SPEECH ENCODING METHOD, STORAGE MEDIUM FOR STORING SPEECH DECODING PROGRAM, AND STORAGE MEDIUM FOR STORING SPEECH ENCODING PROGRAM  
A speech decoder includes a demultiplexing unit, a low frequency band decoding unit, a band splitting filter bank unit, a coded sequence analysis unit, a coded sequence decoding/dequantization...
US20120239387 VOICE TRANSFORMATION WITH ENCODED INFORMATION  
Method, system, and computer program product for voice transformation are provided. The method includes transforming a source speech using transformation parameters, and encoding information on...
US20080281584 FAST ACOUSTIC CANCELLATION  
A speech enhancement system improves the perceptual quality of an aural signal. A receiver detects and receives an unvoiced signal, a fully voiced signal, or a mixed voice remote signal. A...
US20150120285 Systems and Methods for Reconstructing an Audio Signal from Transformed Audio Information  
A system and method may be configured to reconstruct an audio signal from transformed audio information. The audio signal may be resynthesized based on individual harmonics and corresponding...
US20130030795 ENCODING METHOD AND APPARATUS, AND DECODING METHOD AND APPARATUS  
An encoding method of an encoder is provided. The encoder generates first MDCT coefficients by transforming an input signal, and generates MDCT indices by quantizing the first MDCT coefficients....
US20100076754 LOW-DELAY TRANSFORM CODING USING WEIGHTING WINDOWS  
The invention relates to transform coding/decoding of a digital audio signal represented by a succession of frames, using windows of different lengths. For the coding within the meaning of the...
US20120136653 TRANSFORM CODER AND TRANSFORM CODING METHOD  
A transform coding apparatus includes an input scale factor calculating section that calculates an input scale factor having a predetermined number of scale factors associated with an input...
US20150262587 Pitch Synchronous Speech Coding Based on Timbre Vectors  
A pitch-synchronous method and system for speech coding using timbre vectors is disclosed. On the encoder side, speech signal is segmented into pitch-synchronous frames without overlap, then...
US20090222258 VOICE ACTIVITY DETECTION SYSTEM, METHOD, AND PROGRAM PRODUCT  
A voice activity detection method in a low SNR environment. The voice activity detection is performed by extracting a long-term spectrum variation component and a harmonic structure as feature...
US20120016667 Spectrum Flatness Control for Bandwidth Extension  
In accordance with an embodiment, a method of decoding an encoded audio bitstream at a decoder includes receiving the audio bitstream, decoding a low band bitstream of the audio bitstream to get...
US20060277035 AUDIO SIGNAL SEPARATION DEVICE AND METHOD THEREOF  
Problems of permutation can be solved with high accuracy without utilizing knowledge about original signals or information concerning positions of microphones and the like when each one of plural...
US20140244244 APPARATUS AND METHOD FOR PROCESSING FREQUENCY SPECTRUM USING SOURCE FILTER  
A frequency spectrum processing apparatus and method using a source filter are disclosed. The frequency spectrum processing apparatus may include a first excitation spectrum generation unit to...
US20100198586 AUDIO TRANSFORM CODING USING PITCH CORRECTION  
A processed representation of an audio signal having a sequence of frames is generated by sampling the audio signal within first and second frames of the sequence of frames, the second frame...
US20140343931 ROBUST SIGNATURES DERIVED FROM LOCAL NONLINEAR FILTERS  
Content signal recognition is based on a multi-axis filtering of the content signal. The signatures are calculated, formed into data structures and organized in a database for quick searching and...
US20110054885 Device and Method for a Bandwidth Extension of an Audio Signal  
For a bandwidth extension of an audio signal, in a signal spreader the audio signal is temporally spread by a spread factor greater than 1. The temporally spread audio signal is then supplied to a...
US20120179458 APPARATUS AND METHOD FOR ESTIMATING NOISE BY NOISE REGION DISCRIMINATION  
Provided are an apparatus and method for estimating noise that changes with time. The apparatus may calculate a speech absence probability that indicates the possibility of the absence of speech...
US20080235007 SYSTEM AND METHOD FOR ADDRESSING CHANNEL MISMATCH THROUGH CLASS SPECIFIC TRANSFORMS  
A method and system for speaker recognition and identification includes transforming features of a speaker utterance in a first condition state to match a second condition state and provide a...
US20110224975 LOW-DELAY AUDIO CODER  
The present invention relates to methods and devices for encoding and decoding digital audio signals, e.g. a speech signal. An audio coder and a decoder are provided wherein a modeller adds a...
US20110282655 Voice band enhancement apparatus and voice band enhancement method  
A voice band enhancement apparatus is used that includes a frequency transform unit to perform frequency transform on an input signal to calculate a spectrum, a mapping function calculating unit...
US20080071522 Method and device for protected transmission of data words  
A method for the protected transmission of data words involves provision of a first data word (X1), transformation of the first data word (X1) into a sequence comprising at least one second data...
US20120016668 Energy Envelope Perceptual Correction for High Band Coding  
In accordance with an embodiment, A method of encoding an audio bitstream at an encoder includes encoding an original low band signal at the encoder by using a closed loop analysis-by-synthesis...
US20090018824 AUDIO ENCODING DEVICE, AUDIO DECODING DEVICE, AUDIO ENCODING SYSTEM, AUDIO ENCODING METHOD, AND AUDIO DECODING METHOD  
Provided is an audio encoding device for modeling a spectrum waveform and accurately restoring the spectrum waveform. The audio encoding device includes: an FFT unit (104) for subjecting a...
US20100182510 SPECTRAL SMOOTHING METHOD FOR NOISY SIGNALS  
A smoothing method for suppressing fluctuating artifacts in the reduction of interference noise includes the following steps: providing short-term spectra for a sequence of signal frames,...
US20120185242 EXCITATION VECTOR GENERATOR, SPEECH CODER AND SPEECH DECODER  
A noise estimating apparatus estimates two types of noise spectra for removing a noise component using the two types of noise spectra. The noise estimating apparatus includes an A/D converter that...
US20090043566 SPEECH PROCESSING APPARATUS AND METHOD  
A speech processing apparatus includes a plurality of microphones which receive speech produced by a first sound source to obtain first speech signals for a plurality of channels having one-to-one...
US20080040101 Method of estimating sound arrival direction, sound arrival direction estimating apparatus, and computer program product  
Sound signals from sound sources present in multiple directions are accepted as inputs of multiple channels, and signal of each channel is transformed into a signal on a frequency axis. A phase...
US20080249766 Scalable Decoder And Expanded Layer Disappearance Hiding Method  
A scalable decoder which does not frequently switch the band of the decoded signal even if the signal in an expanded layer in band scalable encoding disappear and does not give any strangeness or...
US20060106597 System and method for low bit-rate compression of combined speech and music  
A system and method of compressing audio signals (110, 116, 130, 136, 140, 146) which simultaneously contain speech (110, 116), music (130, 136, 140, 146) and possibly other audio in such fashion...
US20090024396 AUDIO SIGNAL ENCODING METHOD AND APPARATUS  
An audio signal encoding method and apparatus for efficiently encoding an audio signal in an interval having many birth sinusoids and enabling tracking of sinusoidal signals in the next interval,...
US20130297296 SOURCE SEPARATION BY INDEPENDENT COMPONENT ANALYSIS IN CONJUNCTION WITH SOURCE DIRECTION INFORMATION  
Methods and apparatus for signal processing are disclosed. Source separation can be performed to extract source signals from mixtures of source signals by way of independent component analysis....
US20080065373 Sound Encoding Device And Sound Encoding Method  
A sound encoding device enabling the amount of delay to be kept small and the distortion between frames to be mitigated. In the sound encoding device, a window multiplication part (211) of a long...
US20110035212 TRANSFORM CODING OF SPEECH AND AUDIO SIGNALS  
In a method of perceptual transform coding of audio signals in a telecommunication system, performing the steps of determining transform coefficients representative of a time to frequency...
US20150235649 METHOD OF SIMULTANEOUSLY TRANSFORMING A PLURALITY OF VOICE SIGNALS INPUT TO A COMMUNICATIONS SYSTEM  
A method of simultaneously transforming at least two input voice signals xi of a communications system (30), each input voice signal xi being received at a specific reception frequency Fi and...

Matches 1 - 50 out of 138 1 2 3 >