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9299363 Time warp contour calculator, audio signal encoder, encoded audio signal representation, methods and computer program  
A time warp contour calculator for use in an audio signal decoder receives an encoded warp ratio information, derives a sequence of warp ratio values from the encoded warp ratio information, and...
9042558 Decoding apparatus, decoding method, encoding apparatus, encoding method, and editing apparatus  
A decoding apparatus (10) is disclosed which includes: a storing means (11) for storing encoded audio signals including multi-channel audio signals; a transforming means (40) for transforming the...
9043214 Systems, methods, and apparatus for gain factor attenuation  
A method of signal processing according to one embodiment includes calculating an envelope of a first signal that is based on a low-frequency portion of a speech signal, calculating an envelope of...
9043215 Multi-resolution switched audio encoding/decoding scheme  
An audio encoder for encoding an audio signal has a first coding branch, the first coding branch comprising a first converter for converting a signal from a time domain into a frequency domain....
9043201 Method and apparatus for processing audio frames to transition between different codecs  
A method (700, 800) and apparatus (100, 200) processes audio frames to transition between different codecs. The method can include producing (720), using a first coding method, a first frame of...
9042559 Apparatus for processing an audio signal and method thereof  
An apparatus for processing an audio signal and method thereof are disclosed. The present invention includes receiving a downmix signal and side information; extracting control restriction...
9042560 Sparse audio  
A method comprising: sampling received audio at a first rate to produce a first audio signal; transforming the first audio signal into a sparse domain to produce a sparse audio signal; re-sampling...
9037474 Method for classifying audio signal into fast signal or slow signal  
Low bit rate audio coding such as BWE algorithm often encounters conflict goal of achieving high time resolution and high frequency resolution at the same time. In order to achieve best possible...
RE45526 Analysis filterbank, synthesis filterbank, encoder, de-coder, mixer and conferencing system  
An embodiment of an analysis filterbank for filtering a plurality of time domain input frames, wherein an input frame comprises a number of ordered input samples, comprises a windower configured...
9031850 Audio stream combining apparatus, method and program  
A stream combining apparatus is provided, comprising an input unit that receives the input of first group access units and second group access units from two streams that are generated by overlap...
9031833 Communication apparatus  
Provided is a communication apparatus for direct communication between networks of different types. The communication apparatus includes a transmission data selector determining whether or not...
9031852 Data compression apparatus, computer-readable storage medium having stored therein data compression program, data compression system, data compression method, data decompression apparatus, data compression/decompression apparatus, and data structure of compressed data  
A data compression/decompression apparatus, for example, acquires sampling data obtained by sampling an audio signal with a predetermined period, and converts the sampling data into frequency...
9031851 Method and an apparatus for processing a signal  
A method of processing a signal is disclosed. The present invention includes receiving a maximum number of band and a code value of at least one section length, calculating a bit number...
9026451 Pitch post-filter  
Methods and systems for using pitch predictors in speech/audio coders are provided. Techniques for optimal pre- and post-filtering are presented, and a general result that post-filtering is more...
9026452 Bitstream syntax for multi-process audio decoding  
An audio decoder provides a combination of decoding components including components implementing base band decoding, spectral peak decoding, frequency extension decoding and channel extension...
9026450 System for dynamically creating and rendering audio objects  
Embodiments of systems and methods are described for providing backwards compatibility for legacy devices that are unable to natively render non-channel based audio objects. These systems and...
9020812 Audio signal processing method and device  
Disclosed is an audio signal processing method comprising the steps of: receiving an audio signal containing current frame data; generating a first temporary output signal for the current frame...
9020814 Pulse encoding and decoding method and pulse codec  
In a pulse encoding and decoding method and a pulse codec, more than two tracks are jointly encoded, so that free codebook space in the situation of single track encoding can be combined during...
9015051 Reconstruction of audio channels with direction parameters indicating direction of origin  
An audio signal having at least one audio channel and associated direction parameters indicating a direction of origin of a portion of the audio channel with respect to a recording position is...
9015053 Audio coding device and audio coding method, audio decoding device and audio decoding method, and program  
There is provided an audio coding device including a first windowing part that multiplies an audio signal by a first window function, a second windowing part that multiplies the audio signal by a...
9015042 Methods and systems for avoiding partial collapse in multi-block audio coding  
Embodiments are described of a multi-block coding scheme for an audio signal to prevent partial collapse conditions from causing pre-echo compression artifacts. An audio codec includes a...
9015052 Audio-encoding/decoding method and system of lattice-type vector quantizing  
The audio coding method and system of lattice vector quantization is provided in the invention. The method comprises: dividing frequency domain coefficients of an audio signal for which a modified...
9009032 Method and system for performing sample rate conversion  
A method and system for performing sample rate conversion is provided. The method may include configuring a system to convert a sample rate of a first audio channel of a plurality of audio...
9009057 Audio encoding and decoding to generate binaural virtual spatial signals  
An audio encoder comprises a multi-channel receiver (401) which receives an M-channel audio signal where M>2. A down-mix processor (403) down-mixes the M-channel audio signal to a first stereo...
9002716 Method for describing the composition of audio signals  
Method for describing the composition of audio signals, which are encoded as separate audio objects. The arrangement and the processing of the audio objects in a sound scene is described by nodes...
9002717 Method and apparatus for audio communication of information  
A system that incorporates teachings of the present disclosure may include, for example, a controller configured to obtain information associated with media content, to generate a first group of...
8996362 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...
8996388 Method and an apparatus for processing an audio signal  
An apparatus for processing an audio signal and method thereof are disclosed. The present invention includes receiving, by an audio processing apparatus, an audio signal including a first data of...
8996389 Artifact reduction in time compression  
Various techniques are disclosed for reducing artifacts generated by time compression. by adapting the time compression based on the state of the received audio. The amount of time compression may...
8990075 Method, apparatus, and medium for bandwidth extension encoding and decoding  
Provided are a method, apparatus, and medium for encoding/decoding a high frequency band signal by using a low frequency band signal corresponding to an audio signal or a speech signal....
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...
8990073 Method and device for sound activity detection and sound signal classification  
A device and method for estimating a tonal stability of a sound signal include: calculating a current residual spectrum of the sound signal; detecting peaks in the current residual spectrum;...
8990095 Method and an apparatus for processing an audio signal  
An apparatus for processing an audio signal and method thereof are disclosed. The present invention includes receiving, by an audio processing apparatus, an audio signal including a first data of...
8990072 Apparatus and method for encoding and decoding of integrated speech and audio utilizing a band expander to output the audio or speech to a frequency domain encoder or an LPC encoder  
Provided are an apparatus and a method for integrally encoding and decoding a speech signal and a audio signal. The encoding apparatus may include: an input signal analyzer to analyze a...
8983852 Efficient combined harmonic transposition  
The present document relates to audio coding systems which make use of a harmonic transposition method for high frequency reconstruction (HFR), and to digital effect processors, e.g. so-called...
8983851 Noise filer, noise filling parameter calculator encoded audio signal representation, methods and computer program  
A noise filler for providing a noise-filled spectral representation of an audio signal on the basis of an input spectral representation of the audio signal has a spectral region identifier...
8982951 Adaptive motion estimation coding  
A method for encoding a video signal comprising a plurality of reference frames and non-reference frames includes: for a non-reference frame to be encoded, determining if at least a portion of a...
8976970 Apparatus and method for bandwidth extension for multi-channel audio  
A method and apparatus of effectively encoding and decoding a high-frequency signal of a multi-channel audio are provided. A multi-channel audio decoding apparatus may down-mix a multi-channel...
8977551 Parametric speech synthesis method and system  
The present invention provides a parametric speech synthesis method and a parametric speech synthesis system. The method comprises sequentially processing each frame of speech of each phone in a...
8977556 Voice detector and a method for suppressing sub-bands in a voice detector  
Embodiments of the present invention relate to a voice detector receiving an input signal that is divided into sub-signals that represent a frequency sub-band. The voice detector calculates, for...
8976971 Method and apparatus for adjusting channel delay parameter of multi-channel signal  
A method and an apparatus for adjusting a channel delay parameter of a multi-channel signal are provided in the embodiments of the present invention. The method includes: performing down-mixing...
8977557 Method, medium, and apparatus encoding and/or decoding multichannel audio signals  
A method, medium, and apparatus encoding and/or decoding a multichannel audio signal. The method includes detecting the type of spatial extension data included in an encoding result of an audio...
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...
8977544 Method of quantizing linear predictive coding coefficients, sound encoding method, method of de-quantizing linear predictive coding coefficients, sound decoding method, and recording medium and electronic device therefor  
A quantizing method is provided that includes quantizing an input signal by selecting one of a first quantization scheme not using an inter-frame prediction and a second quantization scheme using...
8972248 Band broadening apparatus and method  
A band broadening apparatus includes a processor configured to analyze a fundamental frequency based on an input signal bandlimited to a first band, generate a signal that includes a second band...
8972360 Position invariant compression of files within a multi-level compression scheme  
An aggregated file is generated, by storing a plurality of initially provided files in a sequence. A computational device executes a first set of compression operations on each of the plurality of...
8972270 Method and an apparatus for processing an audio signal  
A method for processing an audio signal is disclosed. The method for processing an audio signal includes frequency-transforming an audio signal to generate a frequency-spectrum, deciding a...
8965776 Iterative forward error correction (FEC) on segmented words using a soft-metric arithmetic scheme  
A system is to receive a word on which to perform error correction; obtain segments, from the word, each segment including a respective subset of samples; update, on a per segment basis, the word...
8965773 Coding with noise shaping in a hierarchical coder  
A method is provided for hierarchical coding of a digital audio signal comprising, for a current frame of the input signal: a core coding, delivering a scalar quantization index for each sample of...
8964994 Encoding of multichannel digital audio signals  
A method for coding a multi-channel audio signal representing a sound scene comprising a plurality of sound sources is provided. This method comprises decomposing the multi-channel signal into...