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9037454 Efficient coding of overcomplete representations of audio using the modulated complex lapped transform (MCLT)  
An “Overcomplete Audio Coder” provides various techniques for overcomplete encoding audio signals using an MCLT-based predictive coder. Specifically, the Overcomplete Audio Coder uses unrestricted...
9037457 Audio codec supporting time-domain and frequency-domain coding modes  
An audio codec supporting both, time-domain and frequency-domain coding modes, having low-delay and an increased coding efficiency in terms of iterate/distortion ratio, is obtained by configuring...
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...
9031026 Transmission apparatus and method for generating reference signal  
It is an object to provide a sequence allocating method that, while maintaining the number of Zadoff-Chu sequences to compose a sequence group, is configured to make it possible to reduce...
9026434 Frame erasure concealment for a multi rate speech and audio codec  
An audio coding terminal and method is provided. The terminal includes a coding mode setting unit to set an operation mode, from plural operation modes, for input audio coding by a codec...
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...
9009036 Methods and systems for bit allocation and partitioning in gain-shape vector quantization for audio coding  
Embodiments are generally directed to systems and methods for bit allocation and band partitioning for gain-shape vector quantization in an audio codec. An audio codec implements a method that...
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...
8977546 Encoding device, decoding device and method for both  
Disclosed are an encoding device and a decoding device which suppress the occurrence of pre-echo artifacts and post-echo artifacts caused by a high layer having a low temporal resolution, and...
8965775 Allocation of bits in an enhancement coding/decoding for improving a hierarchical coding/decoding of digital audio signals  
A method of binary allocation in an enhancement coding/decoding for improving a hierarchical coding/decoding of digital audio signals, including a core coding/decoding in a first frequency band...
8935160 Systems and methods for frame synchronization  
Systems (1600) and methods (1500) for frame synchronization. The methods involve: extracting bit sequences S0 and S1 from a Bit Stream (“BS”) of a Data Burst (“DB”); decoding S0 and S1 to obtain...
8935162 Encoding device, decoding device, and method thereof for specifying a band of a great error  
Disclosed is an encoding device which can accurately specify a band having a large error among all the bands by using a small calculation amount. A first position identifier uses a first layer...
8935161 Encoding device, decoding device, and method thereof for secifying a band of a great error  
Disclosed is an encoding device which can accurately specify a band having a large error among all the bands by using a small calculation amount. A first position identifier uses a first layer...
8930200 Vector joint encoding/decoding method and vector joint encoder/decoder  
A vector joint encoding/decoding method and a vector joint encoder/decoder are provided, more than two vectors are jointly encoded, and an encoding index of at least one vector is split and then...
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.
8918315 Encoding apparatus, decoding apparatus, encoding method and decoding method  
An encoding apparatus includes a first layer encoder that encodes a signal, a first layer decoder that decodes first layer encoded data, a first layer error transform coefficient calculator that...
8918314 Encoding apparatus, decoding apparatus, encoding method and decoding method  
An encoding apparatus includes a first layer encoder that encodes an input signal, a first layer decoder that decodes the first layer encoded data, a weighting filter that filters a first layer...
8914280 Method and apparatus for encoding/decoding speech signal  
An apparatus and method for encoding/decoding a speech signal which determines a variable bit rate based on reserved bits obtained from a target bit rate, is provided. The variable bit rate is...
8898053 Encoding device, decoding device, and methods therein  
An encoding device, a decoding device, and related methods are provided that eliminate the loss of synchronization of the adaptive filters of a terminal at the encoding end and a terminal at the...
8898057 Encoding apparatus, decoding apparatus and methods thereof  
Disclosed is an encoding apparatus that can efficiently encode a signal that is a broad or extra-broad band signal or the like, thereby improving the quality of a decoded signal. This encoding...
8892430 Noise detecting device and noise detecting method  
A difference signal calculating unit of a noise detecting device calculates a difference between the amplitudes of a residual signal at each sample timing and a residual signal at the preceding...
8891775 Method and encoder for processing a digital stereo audio signal  
The invention discloses a method and an encoder for processing a digital audio stereo signal. A digital audio encoder for coding such audio signal comprises a predictive Temporal Noise Shaping...
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...
8849655 Encoder, decoder and methods thereof  
An encoder whereby the bit efficiency of encoding can be improved, thereby improving the qualities of signals as decoded. In the encoder: a time-frequency converting unit (101) converts signals,...
8831932 Scalable audio in a multi-point environment  
Use of a scalable audio codec to implement distributed mixing and/or sender bit rate regulation in a multipoint conference is disclosed. The scalable audio codec allows the audio signal from each...
8818818 Audio encoding device, method, and program which controls the number of time groups in a frame using three successive time group energies  
[PROBLEMS] To provide a high-quality audio signal encoding technique by controlling the number of time/frequency groups in a frame. [MEANS FOR SOLVING PROBLEMS] An audio encoding device includes:...
8812304 Method and system for downloading additional search results into electronic dictionaries  
In one embodiment, the invention provides a method for a system to provide information based on a query, the method comprising: performing a first search of at least one first source for...
8812327 Coding/decoding of digital audio signals  
A method of hierarchical coding of a digital audio frequency input signal into several frequency sub-bands, including a core coding of the input signal according to a first throughput and at least...
8805696 Quality improvement techniques in an audio encoder  
An audio encoder implements multi-channel coding decision, band truncation, multi-channel rematrixing, and header reduction techniques to improve quality and coding efficiency. In the...
8805694 Method and apparatus for encoding and decoding audio signal using adaptive sinusoidal coding  
A method and an apparatus for encoding and decoding audio signals using adaptive sinusoidal coding are provided. The audio signal encoding method includes the steps of dividing a synthesized audio...
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...
8756067 Computationally efficient audio coder  
The present invention provides a computationally efficient technique for compression encoding of an audio signal, and further provides a technique to enhance the sound quality of the encoded audio...
8756056 Apparatus and method for determining a quantizer step size  
For determining a quantizer step size for quantizing a signal including audio or video information, a first quantizer step size as well as an interference threshold are provided. Then, the actual...
8731947 Coding method, decoding method, codec method, codec system and relevant apparatuses  
A coding method, a decoding method, a coding-decoding (codec) method, a codec system and relevant apparatuses are disclosed. The coding method includes: obtaining an amplitude vector and a length...
8725500 Apparatus and method for encoding at least one parameter associated with a signal source  
Apparatus (119) for encoding at least one parameter associated with a signal source for transmission over k frames to a decoder comprises a processor (119) which is configured in operation to...
8725503 Forward time-domain aliasing cancellation with application in weighted or original signal domain  
The present invention relates to methods and devices for forward time-domain aliasing cancellation in a coded signal transmitted from a coder to a decoder. Information related to correction of the...
8725508 Method and apparatus for element identification in a signal  
A computer-implemented method and apparatus for searching for an element sequence, the method comprising: receiving a signal; determining an initial segment of the signal; inputting the initial...
8723700 Method and device for pulse encoding, method and device for pulse decoding  
The present invention discloses a method and a device for pulse encoding, and a method and a device for pulse decoding. The method for pulse encoding includes: calculating an index value of an...
8712766 Method and system for coding an information signal using closed loop adaptive bit allocation  
A method and system for analysis-by-synthesis encoding of an information signal is provide. The encoder (400) can include the steps of generating a first synthetic signal based on a first...
8712764 Device and method for quantizing and inverse quantizing LPC filters in a super-frame  
A device and a method for quantizing, in a super-frame including a sequence of frames, LPC filters calculated during the frames of the sequence. The LPC filter quantizing device and method...
8700410 Method and system for lossless value-location encoding  
A method of encoding samples in a digital signal is provided that includes receiving a frame of N samples of the digital signal, determining L possible distinct data values in the N samples,...
8700406 Preserving audio data collection privacy in mobile devices  
Techniques are disclosed for using the hardware and/or software of the mobile device to obscure speech in the audio data before a context determination is made by a context awareness application...
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,...
8688442 Audio decoding apparatus, audio coding apparatus, and system comprising the apparatuses  
An audio decoding apparatus comprises: a plurality of decoding units; a band replicating unit which processes a decoded signal obtained when a corresponding decoding unit decodes a coded signal,...
8682645 Signal analyzer, signal analyzing method, signal synthesizer, signal synthesizing, windower, transformer and inverse transformer  
The present disclosure relates to a signal analyzer for processing an overlapped input signal frame comprising 2N subsequent input signal values. The signal analyzer comprises: a windower adapted...
8676571 Audio signal processing system and audio signal processing method  
An audio signal processing system including a time-frequency conversion unit which converts an audio signal in time domain into frequency domain in frame units so as to calculate a frequency...
8665945 Encoding method, decoding method, encoding device, decoding device, program, and recording medium  
To improve the encoding compressibility of prediction residuals. An encoder performs prediction analysis of input time-series signals to generate prediction residuals expressed by integers, and...
8655669 Audio encoder, audio decoder, method for encoding an audio information, method for decoding an audio information and computer program using an iterative interval size reduction  
An audio decoder has an arithmetic decoder for providing decoded spectral values on the basis of an arithmetically-encoded representation and a frequency-domain-to-time-domain converter for...
8655652 Apparatus and method for encoding an information signal  
An apparatus for encoding an information signal having discrete values includes a quantizer having a quantizer border, wherein the quantizer is adapted so that a discrete value above the...