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8626495 Method of correcting errors in binary masks  
The invention relates to a method of identifying and correcting errors in a noisy binary mask. An object of the present invention is to provide a scheme for improving a binary mask representing...
8620646 System and method for tracking sound pitch across an audio signal using harmonic envelope  
A system and method may be configured to analyze audio information derived from an audio signal. The system and method may track sound pitch across the audio signal. The tracking of pitch across...
8612239 Apparatus and method for coding audio data based on input signal distribution characteristics of each channel  
Provided is an audio coding apparatus and method that can selectively apply a operation mode of a coding module for stereo or multi-channel representation according to input signal characteristics...
8595000 Method and apparatus to search fixed codebook and method and apparatus to encode/decode a speech signal using the method and apparatus to search fixed codebook  
A method and an apparatus to encode and decode a speech signal using a code excited linear prediction (CELP) algorithm. In order to reduce a bit rate without degrading performance in an...
8589166 Speech content based packet loss concealment  
Systems and methods are described for performing packet loss concealment (PLC) to mitigate the effect of one or more lost frames within a series of frames that represent a speech signal. In...
8589154 Method and apparatus for encoding audio data  
A method for processing audio data includes determining a first common scalefactor value for representing quantized audio data in a frame. A second common scalefactor value is determined for...
RE44600 Encoding device and decoding device  
An encoding device (200) includes an MDCT unit (202) that transforms an input signal in a time domain into a frequency spectrum including a lower frequency spectrum, a BWE encoding unit (204) that...
8577672 Audible errors detection and prevention for speech decoding, audible errors concealing  
A method and apparatus of providing an audio output to a user in a communications system in which the audio to be output to a user, preferably an audio frame, is assessed before it is broadcast to...
8571878 Speech compression and decompression apparatuses and methods providing scalable bandwidth structure  
A speech compression apparatus including: a first band-transform unit transforming a wideband speech signal to a narrowband low-band speech signal; a narrowband speech compressor compressing the...
8571226 Automatic polarity adaptation for ambient noise cancellation  
A sound reproducing device has a loudspeaker arranged to produce sound from an audio signal provided by an audio signal source. A microphone is positioned to pick up ambient noise and generate a...
8560328 Encoding device, decoding device, and method thereof  
A decoding device is capable of flexibly calculating high-band spectrum data with a high accuracy in accordance with an encoding band selected by an upper-node layer of the encoding side. In this...
8554549 Encoding device and method including encoding of error transform coefficients  
A voice encoding device accurately encodes a spectrum shape of a signal having a strong tonality such as a vowel. The device includes: a sub-band divider which divides a first layer error...
8521530 System and method for enhancing a monaural audio signal  
A method, system, and computer program for enhancing a signal are presented. The signal is received, and energy estimates of the signal may be determined. At least one characteristic of the signal...
8521522 Audio coding/decoding method and apparatus using excess quantization information  
There is provided an audio coding device which appropriately sets the quantization bit number by a small calculation amount in each stage when coding an input audio signal by performing...
8521519 Adaptive audio signal source vector quantization device and adaptive audio signal source vector quantization method that search for pitch period based on variable resolution  
An adaptive sound source vector quantization device includes a first pitch cycle instructor, a search range calculator, and a second pitch cycle instructor. The first pitch cycle instructor...
8515743 Method and apparatus for searching fixed codebook  
A method and apparatus for searching fixed codebook are provided. The method includes: obtaining a basic codebook which comprises position information of N pulses on M tracks, wherein N and M are...
8515767 Technique for encoding/decoding of codebook indices for quantized MDCT spectrum in scalable speech and audio codecs  
Codebook indices for a scalable speech and audio codec may be efficiently encoded based on anticipated probability distributions for such codebook indices. A residual signal from a Code Excited...
8510105 Compression and decompression of data vectors  
For an enhanced sequential compression of data vectors in a respective compression pass, a current data vector is mapped to at least one current code vector of at least one codebook in at least...
8502708 Encoding method and decoding method, and devices, program and recording medium for the same  
Information that includes first information identifying integer quotients obtained by divisions using prediction residuals or integers not smaller than 0 that increase monotonically with increases...
8494863 Audio encoder and decoder with long term prediction  
The present invention teaches a new audio coding system that can code both general audio and speech signals well at low bit rates. A proposed audio coding system comprises a linear prediction unit...
8494849 Method and apparatus for transmitting speech data to a remote device in a distributed speech recognition system  
A method of transmitting speech data to a remote device in a distributed speech recognition system, includes the steps of: dividing an input speech signal into frames; calculating, for each frame,...
8489405 Compression coding and decoding method, coder, decoder, and coding device  
The embodiments of the present invention relate to a compression coding and decoding method, a coder, a decoder and a coding device. The compression coding method includes: extracting sign...
8489395 Method and apparatus for generating lattice vector quantizer codebook  
A method and an apparatus for generating a lattice vector quantizer codebook are disclosed. The method includes: storing an eigenvector set that includes amplitude vectors and/or length vectors,...
8484017 Identifying media content  
Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for receiving (i) audio data that encodes a spoken natural language query, and (ii) environmental...
8484022 Adaptive auto-encoders  
A method and system for adaptive auto-encoders is disclosed. An input audio training signal may be transformed into a sequence of feature vectors, each bearing quantitative measures of acoustic...
8471742 Quantization device, radio-frequency receiver comprising such a device and quantization method  
A device for continuous time quantization of an input signal, in order to supply a continuous time output signal that is quantized as two bits, the device including: an electronic circuit,...
8473284 Apparatus and method of encoding/decoding voice for selecting quantization/dequantization using characteristics of synthesized voice  
A voice encoding/decoding method and apparatus. A voice encoder includes: a quantization selection unit generating a quantization selection signal; and a quantization unit extracting a linear...
8468026 Audio decoding using variable-length codebook application ranges  
Provided are, among other things, systems, methods and techniques for decoding an audio signal from a frame-based bit stream. At least one frame includes processing information pertaining to the...
8468017 Multi-stage quantization method and device  
The invention discloses a multi-stage quantization method, which includes the following steps: obtaining a reference codebook according to a previous stage codebook; obtaining a current stage...
8452590 Fixed codebook searching apparatus and fixed codebook searching method  
A fixed codebook searching apparatus, includes a convolution operator, implemented by at least one processor, that convolves an impulse response of a perceptually weighted synthesis filter with an...
8452587 Encoder, decoder, and the methods therefor  
Provided is an encoder which can decode a high-quality stereo signal while keeping the amount of information in the bit allocation information to a minimum when a scalable coding technique is used...
8447592 Methods and apparatus for formant-based voice systems  
In one aspect, a method of processing a voice signal to extract information to facilitate training a speech synthesis model is provided. The method comprises acts of detecting a plurality of...
8447594 Multicodebook source-dependent coding and decoding  
A method for coding data, includes: grouping data into frames; classifying the frames into classes; for each class, transforming the frames belonging to the class into filter parameter vectors,...
8447597 Audio encoding device, audio decoding device, audio encoding method, and audio decoding method  
In an encoding process, a CPU transforms an audio signal from the real-time domain to the frequency domain, and transforms the signal into spectra consisting of MDCT coefficients. The CPU...
8438020 Vector quantization apparatus, vector dequantization apparatus, and the methods  
A vector quantizer which improves the accuracy of vector quantization in switching over a vector quantization codebook on a first stage depending on the type of feature having the correlation with...
8433582 Method and apparatus for estimating high-band energy in a bandwidth extension system  
A method (100) includes receiving (101) an input digital audio signal comprising a narrow-band signal. The input digital audio signal is processed (102) to generate a processed digital audio...
8428941 Method and apparatus for lossless encoding of a source signal using a lossy encoded data stream and a lossless extension data stream  
In lossy based lossless coding a PCM audio signal passes through a lossy encoder to a lossy decoder. The lossy encoder provides a lossy bit stream. The difference signal between the PCM signal and...
8417516 Method and apparatus for encoding and decoding high frequency signal  
Provided are a method and apparatus for encoding and decoding a high frequency signal by using a low frequency signal. The high frequency signal can be encoded by extracting a coefficient by...
8391373 Concealment of transmission error in a digital audio signal in a hierarchical decoding structure  
A method is provided for concealing a transmission error in a digital signal chopped into a plurality of successive frames associated with different time intervals in which, on reception, the...
8392148 Comparison of data signals using characteristic electronic thumbprints extracted therefrom  
A characteristic thumbprint is extracted from a data signal, the thumbprint based on statistics relating to the data signal. The data signal can be compared indirectly by matching this thumbprint...
8392178 Pitch lag vectors for speech encoding  
A method of encoding speech, the method comprising: receiving a signal representative of speech to be encoded; at each of a plurality of intervals during the encoding, determining a pitch lag...
8385670 Image restoration by vector quantization utilizing visual patterns  
The restoration of images by vector quantization utilizing visual patterns is disclosed. One disclosed embodiment comprises restoring detail in a transition region of an unrestored image, by first...
8380526 Method, device and system for enhancement layer signal encoding and decoding  
A method, device and system for signal encoding and decoding are disclosed. The method includes: encoding a core layer signal to obtain a core layer signal code; selecting an enhancement sample...
8374852 Apparatus and method of code conversion and recording medium that records program for computer to execute the method  
Disclosed is a code conversion method to convert a first code sequence conforming to a first speech coding scheme into a second code sequence conforming to a second speech coding scheme. The...
8374853 Hierarchical encoding/decoding device  
A system for coding a hierarchical audio signal, comprising, at least, a core layer using parametric coding by analysis by synthesis in a first frequency band, a band extension layer for widening...
8364494 Systems, methods, and apparatus for split-band filtering and encoding of a wideband signal  
A wideband speech encoder according to one embodiment includes a filter bank having a lowband processing path and a highband processing path. The processing paths have overlapping frequency...
8364476 Method and apparatus of communication  
The invention pertains to a method and apparatus of efficient encoding and decoding of vector quantized data. The method and system explores and implements sub-division of a quantization vector...
8352253 Speech coder and speech decoder  
A vector quantization apparatus performs coding of a linear predictive coding coefficient by multi-stage vector quantization. A first codebook and a second codebook store code vectors, and a...
8340451 Method for constructing image database for object recognition, processing apparatus and processing program  
Provided is a method for constructing an image database for object recognition, which includes a feature extraction step of extracting local descriptors from object images which are to be stored...
8340960 Methods and apparatus for efficient vocoder implementations  
Techniques for implementing vocoders in parallel digital signal processors are described. A preferred approach is implemented in conjunction with the BOPS® Manifold Array (ManArray™) processing...