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8185381 |
Unified filter bank for performing signal conversions
A unified filter bank for performing signal conversions may include an interface that receives signal conversion commands in relation to multiple types of compressed audio bitstreams. The unified...
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8184616 |
Changing codec information to provide voice over internet protocol (VoIP) terminal with coloring service
A system and method to change codec information to provide a coloring service in a Voice over Internet Protocol (VoIP) terminal uses different compression methods depending on a calling state and a...
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8174981 |
Late frame recovery method
Method of processing a transmitted encoded media data stream is received. If a data element arrives prior to, or at, a predetermined playout deadline, the data element is decoded, the media...
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8175145 |
Post-processing for reducing quantization noise of an encoder during decoding
The invention relates to the processing of a signal that is compression encoded (COD) according to a predetermined encoding type applying a quantification operation (Q) and then decoded (DEC) so...
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8165888 |
Reproducing apparatus
Disclosed is a reproducing apparatus comprising: a reproduction section to reproduce reproduction data comprising sound data and/or image data; a selection section to calculate evaluation values...
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8165882 |
Method, apparatus and program for speech synthesis
Apparatus and method for generating high quality synthesized speech having smooth waveform concatenation. The apparatus includes a pitch frequency calculation section, a pitch synchronization...
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8155973 |
Recording and reproducing apparatus for use with optical recording medium having real-time, losslessly encoded data
A lossless encoding and/or decoding apparatus which encodes audio data on a real-time basis includes a lossless compression unit which losslessly compression encodes the audio data stored in an...
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8155972 |
Seamless audio speed change based on time scale modification
This invention involves time-scale modification of audio signals. The invention describes overlap and add time scale modification with variable input and output buffer sizes. Seamless speed change...
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8150702 |
Stereo audio encoding device, stereo audio decoding device, and method thereof
Disclosed is a stereo audio encoding device capable of improving a spatial image of a decoded audio in stereo audio encoding. In this device, an original cross correlation calculation unit (101)...
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8150703 |
Method and apparatus for reducing access delay in discontinuous transmission packet telephony systems
Systems are disclosed for operating a communications network. The system includes a module to buffer frames of a signal, and a module to determine an access delay. The system also includes a module...
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8145498 |
Device and method for generating a coded multi-channel signal and device and method for decoding a coded multi-channel signal
In a multi-channel encoder generating several different parameter sets for reconstructing a multi-channel output signal using at least one transmission channel, the data stream is written such that...
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8140343 |
Method, device and system for signal encoding and decoding
A method, device and system for signal encoding and decoding, the method comprising: encoding a core layer signal to obtain a core layer signal code; selecting an enhancement sample point that...
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8135593 |
Methods, apparatuses and system for encoding and decoding signal
Methods and apparatuses for encoding a signal and decoding a signal and a system for encoding and decoding are provided. The method for encoding a signal includes performing a classification...
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8121850 |
Encoding apparatus and encoding method
An encoding device and an encoding method are provided for encoding by reducing the number of samples to be processed when encoding higher-band spectrum data according to lower-band spectrum data...
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8121848 |
Bases dictionary for low complexity matching pursuits data coding and decoding
Embodiments related to utilizing substantially optimal entries for a relatively low complexity dictionary for matching pursuits coding is disclosed. In various embodiments, methods are invoked for...
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8121847 |
Communication terminal with a parameterised bandwidth expansion, and method for the bandwidth expansion thereof
The disclosure relates to a communication terminal having a bandwidth expansion device for expanding the bandwidth of a narrowband voice signal, on a low-frequency and/or high-frequency side, by...
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8117038 |
Universal container for audio data
Storing audio data encoded in any of a plurality of different audio encoding formats is enabled by parametrically defining the underlying format in which the audio data is encoded, in audio format...
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8112284 |
Methods and apparatus for improving high frequency reconstruction of audio and speech signals
The present invention proposes a new method and a new apparatus for enhancement of audio source coding systems utilizing high frequency reconstruction (HFR). It utilizes a detection mechanism on...
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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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8095375 |
Universal container for audio data
Storing audio data encoded in any of a plurality of different audio encoding formats is enabled by parametrically defining the underlying format in which the audio data is encoded, in audio format...
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8085953 |
Audio-signal time-axis expansion/compression method and device
An audio-signal time-axis expansion/compression method for subjecting an audio signal to time-axis expansion/compression at a time domain includes the steps of: cross-fade-signal generating wherein...
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8086465 |
Transform domain transcoding and decoding of audio data using integer-reversible modulated lapped transforms
A “STAC Codec” provides audio transcoding and decoding by processing an encoded audio signal using a backward-adaptive run-length Golomb-Rice (RLGR) decoder to recover transform coefficients of the...
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8082438 |
Systems and methods for booting a codec processor over a high definition audio bus
Systems and methods for booting a programmable processor such as a DSP that is incorporated into an HDA codec. The codec and a system memory containing boot program instructions are connected to an...
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8078456 |
Audio time scale modification algorithm for dynamic playback speed control
A modified synchronized overlap add (SOLA) algorithm for performing high-quality, low-complexity audio time scale modification (TSM) is described. The algorithm produces good output audio quality...
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8073703 |
Acoustic signal processing apparatus and acoustic signal processing method
To provide an acoustic signal processing apparatus which can reduce the amount of calculation in matrix arithmetic. An acoustic signal processing apparatus converts down-mixed acoustic signals of...
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8073704 |
Conversion device
A plurality of pairs of segments to be weighted/added are selected non-linearly with respect to a time axis of audio data. A speed conversion is achieved by performing the weighting/addition on the...
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8069050 |
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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8069034 |
Method and apparatus for encoding an audio signal using multiple coders with plural selection models
A method for supporting an encoding of an audio signal is shown, wherein at least a first and a second coder mode are available for encoding a section of the audio signal. The first coder mode...
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8069051 |
Zero-gap playback using predictive mixing
Circuits and methods for providing zero-gap playback of consecutive data streams in portable electronic devices, such as media players, are described. In some embodiments, a circuit includes a...
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8069052 |
Quantization and inverse quantization for audio
An audio encoder and decoder use architectures and techniques that improve the efficiency of quantization (e.g., weighting) and inverse quantization (e.g., inverse weighting) in audio coding and...
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8069048 |
Scalable audio encoding and decoding apparatus, method, and medium
Provided is a scalable encoding method, apparatus, and medium. The method includes: encoding a base layer and encoding a first enhancement layer and a second enhancement layer in a frame having the...
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8065139 |
Method of audio encoding
There is described a method of encoding an input signal (20) to generate a corresponding encoded output signal (30), and also encoders (10) arranged to implement the method. The method comprises...
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8065158 |
Apparatus and method of processing an audio signal
In one embodiment, the method includes receiving the audio signal including a block of audio data partitioned into N sub-blocks, and restoring a plurality of code parameters s(0), s(1), . . . ,...
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8065137 |
Apparatus and method for identifying signal frames as audio signal frames
A system and apparatus for establishing whether a received signal frame is an audio signal frame is disclosed. In one embodiment, the system includes a predetermined position in an audio signal...
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8055507 |
Apparatus and method for processing an audio signal using linear prediction
In one embodiment, the method includes receiving an audio data frame having at least one channel. The channel is subdivided into a plurality of blocks, and at least two of the blocks are capable of...
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8050934 |
Local pitch control based on seamless time scale modification and synchronized sampling rate conversion
This invention locally controls the pitch of speech and audio signals. The invention is based on a seamless time scale modification (S-TSM) scheme connected to a synchronized sampling rate...
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8046236 |
Apparatus and method for producing a data stream and apparatus and method for reading a data stream
An entropy encoder includes an apparatus for producing a data stream which comprises two reference points, of code words of variable lengths, the apparatus comprising a first device for writing at...
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8032388 |
Dynamic selection of supported audio sampling rates for playback
A source sampling rate is associated with first or second groups of sampling rates. A playback rate is determined by: (a) selecting the source sampling rate if the source sampling rate is supported...
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8032386 |
Apparatus and method of processing an audio signal
In one embodiment, the method includes receiving the audio signal including at least one block of audio data and configuration information, and reading coding type information and partitioning...
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8032363 |
Adaptive postfiltering methods and systems for decoding speech
A method of processing a decoded speech (DS) signal including successive DS frames, each DS frame including DS samples. The method comprises: adaptively filtering the DS signal to produce a...
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8032371 |
Determining scale factor values in encoding audio data with AAC
Techniques for determining scale factor values when encoding audio data are described. According to one technique, a particular scale factor value (SFV) is estimated using an audio quality...
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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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8024197 |
Sampling rate conversion apparatus and method thereof
A sampling rate conversion apparatus and a method thereof are provided which increase the sampling rate of a discrete audio signal sampled at a predetermined sampling rate by using a fractal...
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8019601 |
Audio coding device with two-stage quantization mechanism
An audio coding device that optimizes quantization parameters for fast convergence of iterations. A quantized bit counter calculates a codeword length representing the number of bits of a Huffman...
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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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8019615 |
Method and system for decoding GSM speech data using redundancy
Aspects of a method and system for decoding GSM speech data using redundancy are provided. A decoding algorithm in a frame process may be utilized to generate a bit-sequence for GSM speech data...
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8019612 |
Methods for improving high frequency reconstruction
The present invention proposes a new method and a new apparatus for enhancement of audio source coding systems utilizing high frequency reconstruction (HFR). It utilizes a detection mechanism on...
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8019598 |
Phase locking method for frequency domain time scale modification based on a bark-scale spectral partition
This invention improves the perceived quality of frequency-domain time scale modification by selection of spectral bands used in phase locking based upon a Bark scale according to the variation in...
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8015018 |
Multichannel decorrelation in spatial audio coding
Each of N audio signals are filtered with a unique decorrelating filter (38) characteristic, the characteristic being a causal linear time-invariant characteristic in the time domain or the...
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8015001 |
Signal encoding apparatus and method thereof, and signal decoding apparatus and method thereof
In a signal encoding apparatus (1) a frequency normalization unit (11) normalizes each spectrum of spectral signals by using respectively normalization factors and supplies a normalization factor...
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