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8175867 |
Voice communication apparatus
A voice communication apparatus includes a communication portion that receives a plurality of frames including at least a first frame having first voice data and a second frame having second voice...
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8165889 |
Slot position coding of TTT syntax of spatial audio coding application
Spatial information associated with an audio signal is encoded into a bitstream, which can be transmitted to a decoder or recorded to a storage media. The bitstream can include different syntax...
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8165871 |
Encoding method and apparatus for efficiently encoding sinusoidal signal whose magnitude is less than masking value according to psychoacoustic model and decoding method and apparatus for decoding encoded sinusoidal signal
Provided are an encoding method and apparatus for efficiently encoding a sinusoidal signal whose magnitude is less than a masking value according to a psychoacoustic model, a decoding method and...
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8160210 |
Conversation outcome enhancement method and apparatus
A system [100] is provided that includes a first set of sensors [140] to sense a set of conditions of at least one participant in a conversation and generate raw data corresponding to the sensed...
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8160869 |
Method and apparatus for encoding continuation sinusoid signal information of audio signal and method and apparatus for decoding same
Provided are a method and apparatus for encoding an audio signal and a method and apparatus for decoding an audio signal. The method includes performing sinusoidal analysis on an audio signal in...
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8155965 |
Time warping frames inside the vocoder by modifying the residual
In one embodiment, the present invention comprises a vocoder having at least one input and at least one output, an encoder comprising a filter having at least one input operably connected to the...
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8155971 |
Audio decoding of multi-audio-object signal using upmixing
A method for decoding a multi-audio-object signal having audio signals of first and second types encoded therein, the multi-audio-object signal having a downmix signal and side information having...
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8150685 |
Method for high quality audio transcoding
A method and apparatus for a voice transcoder that converts a bitstream representing frames of data encoded according to a first voice compression standard to a bitstream representing frames of...
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8150682 |
Adaptive filter pitch extraction
An enhancement system extracts pitch from a processed speech signal. The system estimates the pitch of voiced speech by deriving filter coefficients of an adaptive filter and using the obtained...
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8145475 |
Method for reduction of aliasing introduced by spectral envelope adjustment in real-valued filterbanks
The present invention proposes a new method for improving the performance of a real-valued filterbank based spectral envelope adjuster. By adaptively locking the gain values for adjacent channels...
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8140324 |
Systems, methods, and apparatus for gain coding
A wideband speech encoder according to one embodiment includes a lowband encoder and a highband encoder. The lowband encoder is configured to encode a lowband portion of a wideband speech signal as...
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8134484 |
Encoding and decoding method and device
A device relating to information processing technologies and including an encoding and decoding method configured to solve the poor decoding quality problem. The method includes: encoding each...
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8135585 |
Method and an apparatus for processing a signal
An apparatus and method for processing an encoded signal are discussed. The method includes: if a coding type of an audio signal is a mixed signal coding type, extracting spectral data and a linear...
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8126709 |
Broadband frequency translation for high frequency regeneration
An audio signal is conveyed more efficiently by transmitting or recording a baseband of the signal with an estimated spectral envelope and a noise-blending parameter derived from a measure of the...
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RE43209 |
Speech coding apparatus and speech decoding apparatus
A speech coding apparatus comprises a repetition period pre-selecting unit for generating a plurality of candidates for the repetition period of a driving excitation source by multiplying the...
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RE43189 |
Enhancing perceptual performance of SBR and related HFR coding methods by adaptive noise-floor addition and noise substitution limiting
Methods and an apparatus for enhancement of source coding systems utilizing high frequency reconstruction (HFR) are introduced. The problem of insufficient noise contents is addressed in a...
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RE43190 |
Speech coding apparatus and speech decoding apparatus
A speech coding apparatus comprises a repetition period pre-selecting unit for generating a plurality of candidates for the repetition period of a driving excitation source by multiplying the...
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8117027 |
Method and apparatus for introducing information into a data stream and method and apparatus for encoding an audio signal
Techniques for introducing information into a data stream first obtains the spectral values of the short-term spectrum of the audio signal. Separately, information to be introduced are combined...
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8103513 |
Slot position coding of syntax of spatial audio application
Spatial information associated with an audio signal is encoded into a bitstream, which can be transmitted to a decoder or recorded to a storage media. The bitstream can include different syntax...
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8103512 |
Method and system for aligning windows to extract peak feature from a voice signal
Disclosed is a method capable of adaptively aligning windows to extract features according to the types and characteristics of voice signals. To this end, window lengths based on the window update...
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8099285 |
Temporally accurate watermarking system and method of operation
A system for identifying audio data is provided. The system includes a transform system receiving left channel audio data and right channel audio data and generating a plurality of frequency bins...
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8099275 |
Sound encoder and sound encoding method for generating a second layer decoded signal based on a degree of variation in a first layer decoded signal
A sound encoder having an improved quantization performance while suppressing an increase of the bit rate to a lowest level. In a second layer encoder, a standard deviation calculator calculates a...
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8099291 |
Signal decoding apparatus
A signal decoding apparatus that can suppress any large unusual sounds to provide decoded signals of improved audibility even when the number of hierarchical layers to be used in the decoding...
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8099292 |
Multi-channel audio encoding and decoding
An audio encoder and decoder use architectures and techniques that improve the efficiency of multi-channel audio coding and decoding. The described strategies include various techniques and tools,...
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8086445 |
Method and apparatus for creating a unique audio signature
A method and apparatus for creating a signature of a sampled work in real-time is disclosed herein. Unique signatures of an unknown audio work are created by segmenting a file into segments having...
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8078458 |
Packet loss concealment for sub-band predictive coding based on extrapolation of sub-band audio waveforms
A technique is described for concealing the effect of a lost frame in a series of frames representing an encoded audio signal in a sub-band predictive coding system. In accordance with the...
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8073684 |
Apparatus and method for automatic classification/identification of similar compressed audio files
An audio file is divided into frames in the time domain and each frame is compressed, according to a psycho-acoustic algorithm, into file in the frequency domain. Each frame is divided into...
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8060375 |
Adapting masking thresholds for encoding a low frequency transient signal in audio data
An improved audio coding technique encodes audio having a low frequency transient signal, using a long block, but with a set of adapted masking thresholds. Upon identifying an audio window that...
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8054964 |
System and method for detecting emotions at different steps in a communication
The system and method establish a communication with a first party. A first emotion is detected during a first step during the communication. Steps in the communication can include: establishing a...
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8055500 |
Method, medium, and apparatus encoding/decoding audio data with extension data
A method, medium, and apparatus encoding/decoding audio data in which audio data is hierarchically encoded, and at least one extension data of the audio data is encoded using at least one encoding...
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8054948 |
Audio experience for a communications device user
A system and associated methods provide an audio experience such that a user spatially perceives one or more audio events. One particular method set forth involves obtaining audio events and...
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8046214 |
Low complexity decoder for complex transform coding of multi-channel sound
A multi-channel audio decoder provides a reduced complexity processing to reconstruct multi-channel audio from an encoded bitstream in which the multi-channel audio is represented as a coded subset...
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8046234 |
Method and apparatus for encoding/decoding audio data with scalability
Method and apparatus for encoding/decoding audio data with scalability are provided. The method includes slicing audio data so that sliced audio data corresponds to a plurality of layers, obtaining...
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8046218 |
Speech and method for identifying perceptual features
A system and method for phone detection. The system includes a microphone configured to receive a speech signal in an acoustic domain and convert the speech signal from the acoustic domain to an...
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8036881 |
Enhancing perceptual performance of SBR and related HFR coding methods by adaptive noise-floor addition and noise substitution limiting
Methods and an apparatus for enhancement of source coding systems utilizing high frequency reconstruction (HFR) are introduced. The problem of insufficient noise contents is addressed in a...
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8036882 |
Enhancing perceptual performance of SBR and related HFR coding methods by adaptive noise-floor addition and noise substitution limiting
Methods and an apparatus for enhancement of source coding systems utilizing high frequency reconstruction (HFR) are introduced. The problem of insufficient noise contents is addressed in a...
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8036880 |
Enhancing perceptual performance of SBR and related HFR coding methods by adaptive noise-floor addition and noise substitution limiting
Methods and an apparatus for enhancement of source coding systems utilizing high frequency reconstruction (HFR) are introduced. The problem of insufficient noise contents is addressed in a...
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8027479 |
Binaural multi-channel decoder in the context of non-energy conserving upmix rules
A multi-channel decoder for generating a binaural signal from a downmix signal using upmix rule information on an energy-error introducing upmix rule for calculating a gain factor based on the...
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8019614 |
Energy shaping apparatus and energy shaping method
A temporal processing apparatus includes: a splitter splitting an audio signal, included in the sub-band domain, into diffuse signals indicating reverberating components and direct signals...
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8019597 |
Scalable encoding apparatus, scalable decoding apparatus, and methods thereof
A scalable encoding apparatus capable of reducing the bit rates of encoded parameters and also capable of efficiently encoding audio signals in which a plurality of harmonic structures are...
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8014999 |
Frequency compensation for perceptual speech analysis
The invention provides a softscaled frequency compensation function that allows the evaluation of a first quality measure indicating a global impact of all distortions in an audio transmission...
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8010349 |
Scalable encoder, scalable decoder, and scalable encoding method
A scalable encoder enabling improvement of the encoding efficiency in the second layer and improvement of the quality of the original signal decoded using the encoding signal in the second layer. A...
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8000968 |
Method and apparatus for switching speech or audio signals
A method and an apparatus for switching speech or audio signals, wherein the method for switching speech or audio signals includes when switching of a speech or audio, weighting a first high...
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8000960 |
Packet loss concealment for sub-band predictive coding based on extrapolation of sub-band audio waveforms
A technique is described for concealing the effect of a lost frame in a series of frames representing an encoded audio signal in a sub-band predictive coding system. In accordance with the...
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7996222 |
Prosody conversion
A contour for a syllable (or other speech segment) in a voice undergoing conversion is transformed. The transform of that contour is then used to identify one or more source syllable transforms in...
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7996233 |
Acoustic coding of an enhancement frame having a shorter time length than a base frame
A downsampler 101 converts input data having a sampling rate 2*FH to a sampling rate 2*FL which is lower than the sampling rate 2*FH. A base layer coder 102 encodes the input data having the...
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7991621 |
Method and an apparatus for processing a signal
An apparatus for processing an encoded signal and method thereof are disclosed, by which an audio signal can be compressed and reconstructed in higher efficiency. An audio signal processing method...
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7983441 |
Methods for watermarking media data
Methods are provided for encoding watermark information into media data containing a series of digital samples in a sample domain. The method involves: dividing the series of digital samples into a...
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7979271 |
Methods and devices for switching between sound signal coding modes at a coder and for producing target signals at a decoder
Methods and devices are used for switching between sound signal coding modes and for producing from a decoded target signal, an overlap-add target signal in a current frame coded according to a...
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7974840 |
Method and apparatus for encoding/decoding MPEG-4 BSAC audio bitstream having ancillary information
A method of and an apparatus for encoding/decoding an MPEG-4 bit sliced arithmetic coding (BSAC) audio bitstream having ancillary information. A time domain audio signal is converted to a frequency...
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