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9043200 Adaptive grouping of parameters for enhanced coding efficiency  
The present invention is based on the finding that parameters including: a first set of parameters of a representation of a first portion of an original signal and a second set of parameters of a...
9031835 Methods and arrangements for loudness and sharpness compensation in audio codecs  
In a method of improving perceived loudness and sharpness of a reconstructed speech signal delimited by a predetermined bandwidth, performing the steps of providing (S10) the speech signal, and...
9026435 Method for estimating a fundamental frequency of a speech signal  
The invention provides a method for estimating a fundamental frequency of a speech signal comprising the steps of receiving a signal spectrum of the speech signal, filtering the signal spectrum to...
9020815 Spectral envelope coding of energy attack signal  
MDCT or FFT-based audio coding algorithms often have the problem named here spectral pre-echoes when coding an energy attack signal. This invention presents several possibilities to avoid the...
9015038 Coding generic audio signals at low bitrates and low delay  
A mixed time-domain/frequency-domain coding device and method for coding an input sound signal, wherein a time-domain excitation contribution is calculated in response to the input sound signal. A...
9008329 Noise reduction using multi-feature cluster tracker  
Provided are methods and systems for noise suppression within multiple time-frequency points of spectral representations. A multi-feature cluster tracker is used to track signal and noise sources...
9002703 Community audio narration generation  
The community-based generation of audio narrations for a text-based work leverages collaboration of a community of people to provide human-voiced audio readings. During the community-based...
8996363 Apparatus and method for determining a plurality of local center of gravity frequencies of a spectrum of an audio signal  
An apparatus for determining a plurality of local center-of-gravity frequencies of a spectrum of an audio signal includes an offset determiner, a frequency determiner and an iteration controller....
8990094 Coding and decoding a transient frame  
An electronic device for coding a transient frame is described. The electronic device includes a processor and executable instructions stored in memory that is in electronic communication with the...
8959016 Activating functions in processing devices using start codes embedded in audio  
Apparatus, system and method for performing an action such as accessing supplementary data and/or executing software on a device capable of receiving multimedia are disclosed. After multimedia is...
8949116 Signal processing method and apparatus for amplifying speech signals  
A signal processing method is provided. The signal processing method includes extracting a first signal having a first frequency band from a sum signal of a left signal and a right signal,...
8949118 System and method for robust estimation and tracking the fundamental frequency of pseudo periodic signals in the presence of noise  
Method and system for tracking fundamental frequencies of pseudo-periodic signals in the presence of noise that include receiving a time-frequency representation of signals measured in a...
8930182 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...
8930184 Signal bandwidth extending apparatus  
A signal bandwidth extending apparatus including: a bandwidth extending section configured to extend a frequency bandwidth of a target signal, the target signal included in an input signal; a...
8924200 Audio signal bandwidth extension in CELP-based speech coder  
A method for decoding an audio signal in a decoder having a CELP-based decoder element including a fixed codebook component, at least one pitch period value, and a first decoder output, wherein a...
8924207 Method and apparatus for transcoding audio data  
A method and apparatus for transcoding audio data. The method includes determining if AAC joint stereo exists, running a reference AC-3 rematrixing when the AAC joint stereo does not exist, when...
8918324 Method for decoding an audio signal based on coding mode and context flag  
A method for coding and decoding an audio signal or speech signal and an apparatus adopting the method are provided.
8918319 Speech recognition device and speech recognition method using space-frequency spectrum  
In a speech recognition device and a speech recognition method, a key phrase containing at least one key word is received. The speech recognition method comprises steps: receiving a sound source...
8903721 Smart auto mute  
A mute setting is automatically set based on a speech detection result for acoustic signals received by a device. A device detects the speech based on a variety of cues from acoustic signals...
8898056 System and method for generating a separated signal by reordering frequency components  
The present invention relates to blind source separation. More specifically certain embodiments relate to the blind source separation using frequency domain processes. Aspects of the invention...
8892426 Audio signal loudness determination and modification in the frequency domain  
Methods of, apparatuses for, and computer readable media having instructions thereon that when executed cause carrying out methods of determining and modifying the perceived loudness of a...
8886523 Audio decoding based on audio class with control code for post-processing modes  
In accordance with an embodiment, a method of generating an encoded audio signal, the method includes estimating a time-frequency energy of an input audio signal from a time-frequency filter bank,...
8886543 Frequency ratio fingerprint characterization for audio matching  
System and methods for characterizing interest points within a fingerprint are disclosed herein. The systems include generating a set of interest points and an anchor point related to an audio...
8879762 Method and apparatus to evaluate quality of audio signal  
A method and apparatus to evaluate a quality of an audio signal, in which the number of effective channels is determined for each of a reference signal of a current frame and a test signal...
8868432 Audio signal bandwidth extension in CELP-based speech coder  
A method for decoding an audio signal having a bandwidth that extends beyond a bandwidth of a CELP excitation signal in an audio decoder including a CELP-based decoder element. The method includes...
8849656 System enhancement of speech signals  
A system enhances speech by detecting a speaker's utterance through a first microphone positioned a first distance from a source of interference. A second microphone may detect the speaker's...
8843366 Framing method and apparatus  
A framing method and apparatus are disclosed to overcome inconsistency of gains between sub-frames caused by simple average framing in the prior art. The method includes: obtaining the Linear...
8798041 Method and apparatus for time stretching to hide data packet pre-buffering delays  
A special rendering mode for the first few seconds of play out of multimedia data minimizes the delay caused by pre-buffering of data packets in multimedia streaming applications. Instead of...
8788264 Audio encoding method, audio decoding method, audio encoding device, audio decoding device, program, and audio encoding/decoding system  
An audio encoding device (1A) corrects initial gain information calculated for an arbitrary frame, based on gain information of a stored past frame, thereby calculating gain information to be used...
8788275 Decoding method and apparatus for an audio signal through high frequency compensation  
A decoding apparatus decodes a first encoded data that is encoded from a low-frequency component of an audio signal, and a second encoded data that is used when creating a high-frequency component...
8781844 Audio coding  
A method for encoding an audio signal including: processing a selected subset of a lower series of samples forming a lower frequency spectral band of the audio signal and a higher series of...
8762139 Noise suppression device  
A noise suppression device includes: a power spectrum calculator converting an input signal of time domain into power spectra of frequency domain; a voice/noise determination unit determining...
8762158 Decoding method and decoding apparatus therefor  
A method and apparatus for generating synthesis audio signals are provided. The method includes decoding a bitstream; splitting the decoded bitstream into n sub-band signals; generating n...
8744842 Method and apparatus for detecting voice activity by using signal and noise power prediction values  
A robust method and apparatus to detect voice activity based on the power level of an audio frame. The method may include performing primary active/non-active voice period determination of an...
8744863 Multi-mode audio encoder and audio decoder with spectral shaping in a linear prediction mode and in a frequency-domain mode  
A multi-mode audio signal decoder has a spectral value determinator to obtain sets of decoded spectral coefficients for a plurality of portions of an audio content and a spectrum processor...
8731923 System and method for merging audio data streams for use in speech recognition applications  
A system and method for merging audio data streams receive audio data streams from separate inputs, independently transform each data stream from the time to the frequency domain, and generate...
8719019 Speaker identification  
Speaker identification techniques are described. In one or more implementations, sample data is received at a computing device of one or more user utterances captured using a microphone. The...
8712767 Scalable encoding apparatus, scalable decoding apparatus, scalable encoding method, scalable decoding method, communication terminal apparatus, and base station apparatus  
A scalable encoding apparatus, a scalable decoding apparatus and the like are disclosed which can achieve a band scalable LSP encoding that exhibits both a high quantization efficiency and a high...
8694325 Hierarchical audio coding, decoding method and system  
A hierarchical audio coding, decoding method and system are provided. The method includes dividing frequency domain coefficients of an audio signal after MDCT into a plurality of coding sub-bands,...
8694306 Systems and methods for source signal separation  
A method of processing a signal, including taking a signal formed from a plurality of source signal emitters and expressed in an original domain, decomposing the signal into a mathematical...
8682651 Audio visual signature, method of deriving a signature, and method of comparing audio-visual data  
The invention relates to the analysis of characteristics of audio and/or video signals for the generation of audio-visual content signatures. To determine an audio signature a region of interest...
8682664 Method and device for audio signal classification using tonal characteristic parameters and spectral tilt characteristic parameters  
The present invention discloses a method and a device for audio signal classification, and relates to the field of communications technologies, which solve a problem of high complexity of type...
8676572 Computer-implemented system and method for enhancing audio to individuals participating in a conversation  
A computer-implemented system and method for enhancing audio to individuals participating in a conversation is provided. Audio data for individuals participating in one or more conversations is...
8676172 Generating relational indicators based on analysis of telecommunications events  
A system for generating a relational indicator based on analysis of at least one telecommunications event between a first party and a second party, comprises: a relation management engine which is...
8676574 Method for tone/intonation recognition using auditory attention cues  
In a spoken language processing method for tone/intonation recognition, an auditory spectrum may be determined for an input window of sound and one or more multi-scale features may be extracted...
8666733 Audio signal compression and decoding using band division and polynomial approximation  
When encoding an audio signal, it is possible to efficiently encode the audio signal while maintaining high register signal components, and prevent deterioration of sound quality of decoded...
8666732 High frequency signal interpolating apparatus  
A high frequency signal interpolation apparatus provides, with a simple structure, a high-quality digital audio signal through interpolation of high frequency signals missing due to compression....
8645127 Efficient coding of digital media spectral data using wide-sense perceptual similarity  
Traditional audio encoders may conserve coding bit-rate by encoding fewer than all spectral coefficients, which can produce a blurry low-pass sound in the reconstruction. An audio encoder using...
8631295 Error concealment  
A method and apparatus for selectively replacing damaged portions of a data stream. The method comprises analyzing the data stream to identify damaged portions therein; selecting a damaged portion...
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...

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