With Content Reduction Encoding Patents (Class 704/501)
  • Patent number: 10264381
    Abstract: Disclosed are a multi-channel audio signal processing method and a multi-channel audio signal processing apparatus. The multi-channel audio signal processing method may generate N channel output signals from N/2 channel downmix signals based on an N-N/2-N structure.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: April 16, 2019
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Seung Kwon Beack, Jeong Il Seo, Jong Mo Sung, Tae Jin Lee, Dae Young Jang, Jin Woong Kim
  • Patent number: 10097194
    Abstract: A method comprises at least the following steps: generating pseudo random noise in the digital domain coded on a number N of bits, sampled at a given frequency FH/N; multiplexing in the digital domain the binary signals produced by each of the N bits at a sampling frequency FH so as to obtain noise coded on one bit at said frequency FH; transferring the noise thus coded into the analog domain via a low-voltage differential transmission interface; filtering the analog signal in a passband which can be centered on half the sampling frequency of an analog-digital converter.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: October 9, 2018
    Assignee: THALES
    Inventors: Bruno Lelong, Patrice Barret
  • Patent number: 9900045
    Abstract: A base station system according to an aspect of the invention includes a baseband unit (BBU) and a radio frequency (RF) unit (RFU) connected to the BBU via a communication line. The RFU (BBU) measures the frequencies of occurrence of sampled values indicated by sampled data that is a digital signal corresponding to a baseband signal to be transmitted to the BBU (RFU), and generates a frequency distribution representing a relationship between the sampled value having occurred and the frequency of occurrence. Furthermore, the RFU (BBU) determines a plurality of thresholds for compressing the sampled data, which are used for quantization processing of the sampled value, in accordance with the generated frequency distribution, and compresses the sampled data by the quantization processing using the plurality of thresholds.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: February 20, 2018
    Assignee: KDDI CORPORATION
    Inventors: Akira Agata, Shinobu Nanba
  • Patent number: 9852735
    Abstract: There is provided encoding and decoding methods for encoding and decoding of object based audio. An exemplary encoding method includes inter alia calculating M downmix signals by forming combinations of N audio objects, wherein M?N, and calculating parameters which allow reconstruction of a set of audio objects formed on basis of the N audio objects from the M downmix signals. The calculation of the M downmix signals is made according to a criterion which is independent of any loudspeaker configuration.
    Type: Grant
    Filed: May 23, 2014
    Date of Patent: December 26, 2017
    Assignee: Dolby International AB
    Inventors: Heiko Purnhagen, Kristofer Kjoerling, Toni Hirvonen, Lars Villemoes, Dirk Jeroen Breebaart
  • Patent number: 9800264
    Abstract: Disclosed is a transmission device capable of reducing quantization errors in nonlinear quantization of IQ signals. In the device, a standard deviation measuring unit measures a standard deviation ? of the amplitude distribution of input signals. A kurtosis measuring unit measures the kurtosis of the amplitude distribution of the input signals. A correction coefficient determining unit determines a correction coefficient ? corresponding to the kurtosis of the amplitude distribution of the input signals. A quantization unit quantizes the input signals using the correction coefficient ? and calculates quantization data. A multiplexing unit multiplexes the quantization data and quantization control information with each other.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: October 24, 2017
    Assignee: PANASONIC CORPORATION
    Inventors: Akihiro Saito, Tomohiro Kimura, Toshiaki Sakurai
  • Patent number: 9686551
    Abstract: Techniques related to content adaptive entropy coding of partitions data are described.
    Type: Grant
    Filed: January 24, 2014
    Date of Patent: June 20, 2017
    Assignee: Intel Corporation
    Inventors: Atul Puri, Neelesh N. Gokhale, Daniel Socek
  • Patent number: 9660851
    Abstract: A system and method of providing a modulated signal useable in a signal transmission system. The method includes transforming, perhaps with respect to both time and frequency, a data frame including a plurality of data elements into a transformed data matrix. The transformed data matrix includes a plurality of transformed data elements where each of the plurality of transformed data elements is based upon each of the plurality of data elements. The method further includes generating the modulated signal in accordance with the transformed data elements of the transformed data matrix.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: May 23, 2017
    Inventors: Ronny Hadani, Salim Shlomo Rakib
  • Patent number: 9628139
    Abstract: A base station system according to an aspect of the invention includes a baseband unit (BBU) and a radio frequency (RF) unit (RFU) connected to the BBU via a communication line. The RFU (BBU) measures the frequencies of occurrence of sampled values indicated by sampled data that is a digital signal corresponding to a baseband signal to be transmitted to the BBU (RFU), and generates a frequency distribution representing a relationship between the sampled value having occurred and the frequency of occurrence. Furthermore, the RFU (BBU) determines a plurality of thresholds for compressing the sampled data, which are used for quantization processing of the sampled value, in accordance with the generated frequency distribution, and compresses the sampled data by the quantization processing using the plurality of thresholds.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: April 18, 2017
    Assignee: KDDI CORPORATION
    Inventors: Akira Agata, Shinobu Nanba
  • Patent number: 9532251
    Abstract: Methods, systems, and devices for wireless communication are provided for mobility management for wireless communications systems that utilize a flexible bandwidth carrier. Some embodiments include approaches for determining bandwidth information, such as one or more bandwidth scaling factors N and/or flexible bandwidths, at a user equipment (UE), where the bandwidth information may not be signaled to the UE. Embodiments for determining bandwidth information include: random ordered bandwidth scaling factor approaches, delay ordered bandwidth scaling factor approaches, storing bandwidth scaling factor value in UE Neighbor Record approaches, spectrum measurement approaches, spectrum calculation approaches, and/or a priori approaches. Flexible bandwidth carrier systems may utilize spectrum portions that may not be big enough to fit a normal waveform.
    Type: Grant
    Filed: November 6, 2012
    Date of Patent: December 27, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Olufunmilola O. Awoniyi, Soumya Das, Edwin C. Park, Roy Franklin Quick, Jr., Samir Salib Soliman
  • Patent number: 9524141
    Abstract: A digital audio pass-through device capable of connecting multiple host computing devices is described. The digital audio pass-through device allows computing devices such as personal computers (Mac or PC), tablets, and smart phones to share high quality digital audio data streams with one another via USB connections. The digital audio pass-through device also allows for the aggregation of high quality audio data from multiple computing devices with limited to no latency.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: December 20, 2016
    Assignee: iKingdom Corp.
    Inventors: Michael Loh, Edmund Geeraert, Demetrio Navarro, Scott Juskiw
  • Patent number: 9313248
    Abstract: A method and system for delivering encoded content are provided. A holdback representing a portion of the encoded content is extracted, thereby damaging the encoded content. The damaged encoded content is distributed. The holdback is transmitted to enable reintegration of the holdback with the damaged encoded content to restore the encoded content.
    Type: Grant
    Filed: April 13, 2006
    Date of Patent: April 12, 2016
    Inventors: Johnny Stuart Epstein, Earl Howard Epstein
  • Patent number: 9299355
    Abstract: The invention relates to an apparatus (1) for improving a stereo audio signal of an FM stereo radio receiver (10). It is suggested to employ components of a standard HE-ACC v2 decoder (40) in such apparatus (1) to efficiently recover the stereo audio signal (L\R?) while also exhibiting good signal quality. To that end, parametric stereo parameters (15) shall be quantized and submitted to such decoder (40) together with a mono-downmix signal (25). The decoder (25) can then easily recover the parametric stereo parameters (15) by de-quantizing them via a simple lookup table, and finally creating the stereo output signal (L?R?) from the de-quantized parametric stereo parameters and the mono-downmix signal (25). The apparatus (1) further includes a parameter estimation stage (5) which may again be embodied on the basis of components of a standard HE-ACC v2 encoder (65).
    Type: Grant
    Filed: July 20, 2012
    Date of Patent: March 29, 2016
    Assignee: Dolby International AB
    Inventors: Jan Mueller, Robin Thesing, Michael Beer
  • Patent number: 9294789
    Abstract: Multibitrate (MBR) live video broadcasting is disclosed in which live video input is copied into a plurality of streams each designated for encoding into a different bitrate. The MBR broadcasting operation is made efficient by performing pre-quantization calculations only the first of the plurality of streams. The results of those calculations are then merely copied to the other streams. Quantization and encoding processes may then be applied to each of the streams to process the streams into their respective, predetermined bitrates.
    Type: Grant
    Filed: December 9, 2008
    Date of Patent: March 22, 2016
    Assignee: Adobe Systems Incorporated
    Inventor: Gajinder Singh
  • Patent number: 9269359
    Abstract: A system comprises: first and second base stations; and a plurality of relay nodes, each of said relay nodes connected to the first base station, each of said relay nodes being connected to at least one other relay node, whereby at least one relay node is configured to at least one of receive and send information for another of said relays nodes; wherein when at least one of the plurality of relay nodes is handed over to a second base station the at least one relay node is configured to receive and/or send information via another of the relay nodes connected to the first base station.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: February 23, 2016
    Assignee: Nokia Technologies Oy
    Inventor: Juha Ojanperä
  • Patent number: 9257127
    Abstract: Provided is an apparatus and method for coding and decoding multi-object audio signals with various channels and providing backward compatibility with a conventional spatial audio coding (SAC) bitstream. The apparatus includes: an audio object coding unit for coding audio-object signals inputted to the coding apparatus based on a spatial cue and creating rendering information for the coded audio-object signals, where the rendering information provides a coding apparatus including spatial cue information for audio-object signals; channel information of the audio-object signals; and identification information of the audio-object signals, and used in coding and decoding of the audio signals.
    Type: Grant
    Filed: January 2, 2013
    Date of Patent: February 9, 2016
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Seung-Kwon Beack, Jeong-Il Seo, Tae-Jin Lee, Yong-Ju Lee, Dae-Young Jang, Jin-Woo Hong, Jin-Woong Kim, Kyeong-Ok Kang
  • Patent number: 9251794
    Abstract: Provided is a signal processing apparatus including a first periodicity detecting section detecting periodicity information of an acoustic signal included in a first content, as first periodicity information, a second periodicity detecting section detecting the periodicity information of an acoustic signal included in a second content, as second periodicity information, a similarity calculating section calculating a similarity between the first periodicity information detected by the first periodicity detecting section and the second periodicity information detected by the second periodicity detecting section, and a synchronization information generating section generating synchronization information used at a time of synchronizing the first content and the second content, based on the similarity calculated by the similarity calculating section.
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: February 2, 2016
    Assignee: SONY CORPORATION
    Inventors: Shusuke Takahashi, Akira Inoue
  • Patent number: 9232334
    Abstract: An apparatus for and a method of processing a multi-channel audio signal using space information. The apparatus includes: a main coding unit down mixing a multi-channel audio signal by applying space information to surround components included in the multi-channel audio signal, generating side information using the multi-channel audio signal or a stereo signal of a down-mixed result, coding the stereo signal and the side information, and transmitting the coded result as a coding signal; and a main decoding unit receiving the coding signal, decoding the stereo signal and the side information using the received coding signal, up mixing the decoded stereo signal using the decoded side information, and restoring the multi-channel audio signal.
    Type: Grant
    Filed: September 1, 2014
    Date of Patent: January 5, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Junghoe Kim, Sangchul Ko, Shihwa Lee, Eunmi Oh, Miao Lei
  • Patent number: 9218818
    Abstract: The present invention provides improvements to prior art audio codecs that generate a stereo-illusion through post-processing of a received mono signal. These improvements are accomplished by extraction of stereo-image describing parameters at the encoder side, which are transmitted and subsequently used for control of a stereo generator at the decoder side. Furthermore, the invention bridges the gap between simple pseudo-stereo methods, and current methods of true stereo-coding, by using a new form of parametric stereo coding. A stereo-balance parameter is introduced, which enables more advanced stereo modes, and in addition forms the basis of a new method of stereo-coding of spectral envelopes, of particular use in systems where guided HFR (High Frequency Reconstruction) is employed. As a special case, the application of this stereo-coding scheme in scalable HFR-based codecs is described.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: December 22, 2015
    Assignee: DOLBY INTERNATIONAL AB
    Inventors: Fredrik Henn, Kristofer Kjorling, Lars Liljeryd, Jonas Roden, Jonas Engdegard
  • Patent number: 9154585
    Abstract: A data transmitting apparatus is provided. The data transmitting apparatus includes a packet generator configured to generate a packet including a plurality of sub packets and a transmitter configured to transmit the generated packet to a data receiving apparatus. Each of the plurality of sub packets includes audio data corresponding to content among a plurality of contents.
    Type: Grant
    Filed: February 15, 2013
    Date of Patent: October 6, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jong-hwa Kim, Soo-young Kim, Il-ju Na, Suk-Jin Yun, Jae-min Lee, Kyeong-jae Lee
  • Patent number: 9117440
    Abstract: The present document relates to audio forensics, notably the blind detection of traces of parametric audio encoding/decoding. In particular, the present document relates to the detection of parametric frequency extension audio coding, such as spectral band replication (SBR) or spectral extension (SPX), from uncompressed waveforms such as PCM (pulse code modulation) encoded waveforms. A method for detecting frequency extension coding history in a time domain audio signal is described.
    Type: Grant
    Filed: April 30, 2012
    Date of Patent: August 25, 2015
    Assignees: Dolby International AB, Dolby Laboratories Licensing Corporation
    Inventors: Harald H. Mundt, Arijit Biswas, Regunathan Radhakrishnan
  • Patent number: 9082395
    Abstract: The application relates to audio encoder and decoder systems. An embodiment of the encoder system comprises a downmix stage for generating a downmix signal and a residual signal based on a stereo signal. In addition, the encoder system comprises a parameter determining stage for determining parametric stereo parameters such as an inter-channel intensity difference and an inter-channel cross-correlation. Preferably, the parametric stereo parameters are time- and frequency-variant. Moreover, the encoder system comprises a transform stage. The transform stage generates a pseudo left/right stereo signal by performing a transform based on the downmix signal and the residual signal. The pseudo stereo signal is processed by a perceptual stereo encoder. For stereo encoding, left/right encoding or mid/side encoding is selectable. Preferably, the selection between left/right stereo encoding and mid/side stereo encoding is time- and frequency-variant.
    Type: Grant
    Filed: March 5, 2010
    Date of Patent: July 14, 2015
    Assignee: Dolby International AB
    Inventors: Purnhagen Heiko, Pontus Carlsson, Kristofer Kjoerling
  • Patent number: 9071285
    Abstract: A system and method of providing a modulated signal useable in a signal transmission system. The method includes transforming, perhaps with respect to both time and frequency, a data frame including a plurality of data elements into a transformed data matrix. The transformed data matrix includes a plurality of transformed data elements where each of the plurality of transformed data elements is based upon each of the plurality of data elements. The method further includes generating the modulated signal in accordance with the transformed data elements of the transformed data matrix.
    Type: Grant
    Filed: June 25, 2013
    Date of Patent: June 30, 2015
    Assignee: Cohere Technologies, Inc.
    Inventors: Ronny Hadani, Salim Shlomo Rakib
  • Patent number: 9071286
    Abstract: A method for modulating data for transmission within a communication system. The method includes establishing a time-frequency shifting matrix of dimension N×N, wherein N is greater than one. The method further includes combining the time-frequency shifting matrix with a data frame to provide an intermediate data frame. A transformed data matrix is provided by permuting elements of the intermediate data frame. A modulated signal is generated in accordance with elements of the transformed data matrix.
    Type: Grant
    Filed: June 25, 2013
    Date of Patent: June 30, 2015
    Assignee: Cohere Technologies, Inc.
    Inventors: Ronny Hadani, Salim Shlomo Rakib
  • Patent number: 9065547
    Abstract: Compression of audio signal data is described herein. In various embodiments, the compression of each unit of the audio signal data includes the employment of a distribution substantially representative of a subblock of residual data of the unit of audio signal data, to reduce the amount of data having to be transmitted to transmit the unit of audio signal data to a recipient.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: June 23, 2015
    Assignee: Intel Corporation
    Inventor: Yuriy A. Reznik
  • Patent number: 9043201
    Abstract: 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 coded output audio samples by coding a first audio frame in a sequence of frames. The method can include forming (730) an overlap-add portion of the first frame using the first coding method. The method can include generating (740) a combination first frame of coded audio samples based on combining the first frame of coded output audio samples with the overlap-add portion of the first frame. The method can include initializing (760) a state of a second coding method based on the combination first frame of coded audio samples. The method can include constructing (770) an output signal based on the initialized state of the second coding method.
    Type: Grant
    Filed: January 3, 2012
    Date of Patent: May 26, 2015
    Assignee: GOOGLE TECHNOLOGY HOLDINGS LLC
    Inventors: Udar Mittal, James P. Ashley
  • Patent number: 9042558
    Abstract: 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 encoded audio signals to generate transform block-based audio signals in a time domain; a window processing means (41) for multiplying the transform block-based audio signals by a product of a mixture ratio of the audio signals and a first window function, the product being a second window function; a synthesizing means (43) for overlapping the multiplied transform block-based audio signals to synthesize audio signals of respective channels; and a mixing means (14) for mixing audio signals of the respective channels between the channels to generate a downmixed audio signal. Furthermore, an encoding apparatus is also disclosed which downmixes the multi-channel audio signals, encodes the downmixed audio signals, and generates the encoded, downmixed audio signals.
    Type: Grant
    Filed: October 1, 2008
    Date of Patent: May 26, 2015
    Assignee: GVBB Holdings S.A.R.L.
    Inventor: Yousuke Takada
  • Patent number: 9042560
    Abstract: 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 of the sparse audio signal to produce a re-sampled sparse audio signal; and providing the re-sampled sparse audio signal, wherein bandwidth required for accurate audio reproduction is removed but bandwidth required for spatial audio encoding is retained AND/OR a method comprising: receiving a first sparse audio signal for a first channel; receiving a second sparse audio signal for a second channel; and processing the first sparse audio signal and the second sparse audio signal to produce one or more inter-channel spatial audio parameters.
    Type: Grant
    Filed: December 23, 2009
    Date of Patent: May 26, 2015
    Assignee: Nokia Corporation
    Inventor: Pasi Ojala
  • Patent number: 9031850
    Abstract: 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 transform; a decoder that generates group frames by decoding the group access units and that generates group frames by decoding the group access units; and a combining unit that uses first group frames and second group frames as a frame of reference for the access units, that decodes the frames, that performs selective mixing to generate mixed frames, that encodes said mixed frames, that generates a prescribed number of group access units, and that joins two streams, using a prescribed number of group access units as a joint such that the access units adjacent to each other on the boundary between the two streams and a prescribed number of group access units are stitched so that the information for decoding the same common frames is distributed.
    Type: Grant
    Filed: August 20, 2009
    Date of Patent: May 12, 2015
    Assignee: GVBB Holdings S.A.R.L.
    Inventor: Yousuke Takada
  • Patent number: 9015053
    Abstract: 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 second window function having a characteristic different from a characteristic of the first window function, a window selecting part that selects the first window function or the second window function as an optimum window function based on the audio signal multiplied by the first windowing part and the audio signal multiplied by the second windowing part, a coding part that codes a frequency spectrum of the audio signal multiplied by the optimum window function, and a transmitting part that transmits the frequency spectrum coded by the coding part and window function information representing the optimum window function.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: April 21, 2015
    Assignee: Sony Corporation
    Inventors: Shiro Suzuki, Yuuki Matsumura, Yasuhiro Toguri, Yuuji Maeda, Jun Matsumoto
  • Patent number: 9009036
    Abstract: 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 uses an implicit, dynamic scheme to allow an encoder and decoder to recreate a series of bit allocation decisions for gain and shape without transmitting additional side information for each decision, based on the number of bits that are left remaining and available in a given packet. For implementation in practical codecs, the band comprising the allocation of bits for the shape is recursively split into equal partitions until the number of bits allocated to each partition is less than the maximum codebook size.
    Type: Grant
    Filed: March 7, 2012
    Date of Patent: April 14, 2015
    Inventors: Jean-Marc Valin, Timothy B. Terriberry
  • Patent number: 9009032
    Abstract: 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 channels to produce a first audio stream of samples. The system may be dynamically reconfigured to convert a sample rate of a second of the plurality of audio channels to produce a second audio stream of samples, wherein the first and second audio streams are output from the system at the same time. The method may further include arbitrating between request for additional data from the first and second audio stream of samples, where processing of the first channel is suspended when the request corresponds to a second channel that is of higher priority.
    Type: Grant
    Filed: November 9, 2006
    Date of Patent: April 14, 2015
    Assignee: Broadcom Corporation
    Inventors: David Wu, Keith Klinger
  • Patent number: 8996362
    Abstract: 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 demicator to decimate the temporally spread version by a decimation factor matched to the spread factor. The band generated by this decimation operation is extracted and distorted, and finally combined with the audio signal to obtain a bandwidth extended audio signal. A phase vocoder in the filterbank implementation or transformation implementation may be used for signal spreading.
    Type: Grant
    Filed: January 20, 2009
    Date of Patent: March 31, 2015
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Frederik Nagel, Sascha Disch, Max Neuendorf
  • Patent number: 8983852
    Abstract: 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 exciters, where generation of harmonic distortion adds brightness to the processed signal.
    Type: Grant
    Filed: May 25, 2010
    Date of Patent: March 17, 2015
    Assignee: Dolby International AB
    Inventors: Per Ekstrand, Lars Villemoes, Per Hedelin
  • Patent number: 8983851
    Abstract: 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 configured to identify spectral regions of the input spectral representation spaced from non-zero spectral regions of the input spectral representation by at least one intermediate spectral region, to obtain identified spectral regions, and a noise inserter configured to selectively introduce noise into the identified spectral regions to obtain the noise-filled spectral representation of the audio signal. A noise filling parameter calculator for providing a noise filling parameter on the basis of a quantized spectral representation of an audio signal has a spectral region identifier, as mentioned above, and a noise value calculator configured to selectively consider quantization errors of the identified spectral regions for a calculation of the noise filling parameter.
    Type: Grant
    Filed: January 11, 2011
    Date of Patent: March 17, 2015
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Nikolaus Rettelbach, Bernhard Grill, Guillaume Fuchs, Stefan Geyersberger, Markus Multrus, Harald Popp, Juergen Herre, Stefan Wabnik, Gerald Schuller, Jens Hirschfeld
  • Patent number: 8977557
    Abstract: 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 signal, if the spatial extension data is data indicating a core audio object type related to a technique of encoding core audio data, detecting the core audio object type; decoding core audio data by using a decoding technique according to the detected core audio object type, if the spatial extension data is residual coding data, decoding the residual coding data by using the decoding technique according to the core audio object type, and up-mixing the decoded core audio data by using the decoded residual coding data. According to the method, the core audio data and residual coding data may be decoded by using an identical decoding technique, thereby reducing complexity at the decoding end.
    Type: Grant
    Filed: October 28, 2013
    Date of Patent: March 10, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jung-hoe Kim, Eun-mi Oh
  • Patent number: 8977543
    Abstract: A quantizing apparatus is provided that includes a quantization path determiner that determines a path from a first path not using inter-frame prediction and a second path using the inter-frame prediction, as a quantization path of an input signal, based on a criterion before quantization of the input signal; a first quantizer that quantizes the input signal, if the first path is determined as the quantization path of the input signal; and a second quantizer that quantizes the input signal, if the second path is determined as the quantization path of the input signal.
    Type: Grant
    Filed: April 23, 2012
    Date of Patent: March 10, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ho-sang Sung, Eun-mi Oh
  • Patent number: 8972270
    Abstract: 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 weighting per band corresponding to energy per band using the frequency spectrum, receiving a masking threshold based on a psychoacoustic model, applying the weighting to the masking threshold to generate a modified masking threshold, and quantizing the audio signal using the modified masking threshold.
    Type: Grant
    Filed: May 25, 2009
    Date of Patent: March 3, 2015
    Assignees: LG Electronics Inc., Industry-Academic Cooperation Foundation, Yonsei University
    Inventors: Hyen-O Oh, Chang Heon Lee, Jeongook Song, Yang Won Jung, Hong Goo Kang
  • Patent number: 8972248
    Abstract: 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 different from the first band based on the input signal, control a frequency response of the second band based on the fundamental frequency, reflect the frequency response of the second band on the signal that includes the second band and generate a frequency-response-adjusted signal that includes the second band, and synthesize the input signal and the frequency-response-adjusted signal.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: March 3, 2015
    Assignee: Fujitsu Limited
    Inventors: Takeshi Otani, Taro Togawa, Masanao Suzuki, Shusaku Ito
  • Patent number: 8964994
    Abstract: 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 frequency bands and, per frequency band, obtaining directivity information per sound source of the sound scene, the information being representative of the spatial distribution of the sound source in the sound scene, of selecting a set of sound sources of the sound scene constituting principal sources, of matrixing the selected principal sources to obtain a sum signal with a reduced number of channels and, of coding the directivity information and of forming a binary stream comprising the coded directivity information, the binary stream being transmittable in parallel with the sum signal. A decoding method is also provided that is able to decode the sum signal and the directivity information to obtain a multi-channel signal, to an adapted coder and an adapted decoder.
    Type: Grant
    Filed: December 11, 2009
    Date of Patent: February 24, 2015
    Assignee: Orange
    Inventors: Florent Jaillet, David Virette
  • Patent number: 8959015
    Abstract: Provided is an apparatus for integrally encoding and decoding a speech signal and an audio signal. An encoding apparatus for integrally encoding a speech signal and an audio signal, may include: a module selection unit to analyze a characteristic of an input signal and to select a first encoding module for encoding a first frame of the input signal; a speech encoding unit to encode the input signal according to a selection of the module selection unit and to generate a speech bitstream; an audio encoding unit to encode the input signal according to the selection of the module selection unit and to generate an audio bitstream; and a bitstream generation unit to generate an output bitstream from the speech encoding unit or the audio encoding unit according to the selection of the module selection unit.
    Type: Grant
    Filed: July 14, 2009
    Date of Patent: February 17, 2015
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Tae Jin Lee, Seung Kwon Beack, Minje Kim, Dae Young Jang, Kyeongok Kang, Jin Woo Hong, Hochong Park, Young-Cheol Park
  • Patent number: 8942989
    Abstract: Disclosed is an audio encoding device which removes unnecessary inter-channel parameters from the subject to be encoded, improving the encoding efficiency thereby. In this audio encoding device, a principal component analysis unit (301) converts an inputted left signal {Lsb(f)} and an inputted right signal {Rsb(f)} into a principal component signal {PCsb(f)} and an ambient signal {Asb(f)} and calculates for each sub-band, a rotation angle which indicates the degree of conversion; a monophonic encoding unit (303) encodes the principal component signal {Pcsb(f)}; a rotation angle encoding unit (302) encodes the angle of rotation {?b}; a local monophonic decoding unit (603) creates a decoded principal component signal; and a redundant parameter elimination unit (604) identifies the redundant parameters by analyzing the encoding quality of the decoded principal component signal and eliminates the redundant parameters from the signal to be encoded.
    Type: Grant
    Filed: December 27, 2010
    Date of Patent: January 27, 2015
    Assignee: Panasonic Intellectual Property Corporation of America
    Inventors: Zongxian Liu, Kok Seng Chong
  • Patent number: 8938387
    Abstract: The present invention teaches a new audio coding system that can code both general audio and speech signals well at low bit rates. A proposed audio coding system comprises linear prediction unit for filtering an input signal based on an adaptive filter; a transformation unit for transforming a frame of the filtered input signal into a transform domain; and a quantization unit for quantizing the transform domain signal. The quantization unit decides, based on input signal characteristics, to encode the transform domain signal with a model-based quantizer or a non-model-based quantizer. Preferably, the decision is based on the frame size applied by the transformation unit.
    Type: Grant
    Filed: May 28, 2013
    Date of Patent: January 20, 2015
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Per Hedelin, Pontus Carlsson, Leif Jonas Samuelsson, Michael Schug
  • Patent number: 8935156
    Abstract: The present proposes new methods and an apparatus for enhancement of source coding systems utilizing high frequency reconstruction (HFR). It addresses the problem of insufficient noise contents in a reconstructed highband, by Adaptive Noise-floor Addition. It also introduces new methods for enhanced performance by means of limiting unwanted noise, interpolation and smoothing of envelope adjustment amplification factors. The present invention is applicable to both speech coding and natural audio coding systems.
    Type: Grant
    Filed: April 15, 2014
    Date of Patent: January 13, 2015
    Assignee: Dolby International AB
    Inventors: Lars G. Liljeryd, Kristofer Kjoerling, Per Ekstrand, Fredrik Henn
  • Patent number: 8930202
    Abstract: An audio encoder for encoding segments of coefficients, the segments of coefficients representing different time or frequency resolutions of a sampled audio signal, the audio encoder including a processor for deriving a coding context for a currently encoded coefficient of a current segment based on a previously encoded coefficient of a previous segment, the previously encoded coefficient representing a different time or frequency resolution than the currently encoded coefficient. The audio encoder further includes an entropy encoder for entropy encoding the current coefficient based on the coding context to obtain an encoded audio stream.
    Type: Grant
    Filed: January 11, 2011
    Date of Patent: January 6, 2015
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V.
    Inventors: Markus Multrus, Bernhard Grill, Guillaume Fuchs, Stefan Geyersberger, Nikolaus Rettelbach, Virgilio Bacigalupo
  • Patent number: 8930200
    Abstract: 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 combined between different vectors, so that encoding idle spaces of different vectors can be recombined, thereby facilitating saving of encoding bits, and because an encoding index of a vector is split and then shorter split indexes are recombined, thereby facilitating reduction of requirements for the bit width of operating parts in encoding/decoding calculation.
    Type: Grant
    Filed: July 24, 2013
    Date of Patent: January 6, 2015
    Assignee: Huawei Technologies Co., Ltd
    Inventors: Fuwei Ma, Dejun Zhang, Lei Miao, Fengyan Qi
  • Patent number: 8924222
    Abstract: A scheme for coding a set of transform coefficients that represent an audio-frequency range of a signal uses a harmonic model to parameterize a relationship between the locations of regions of significant energy in the frequency domain.
    Type: Grant
    Filed: July 28, 2011
    Date of Patent: December 30, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Vivek Rajendran, Ethan Robert Duni, Venkatesh Krishnan, Ashish Kumar Tawari
  • Patent number: 8924816
    Abstract: A method and system to improve the performance and/or reliability of a solid-state drive (SSD). In one embodiment of the invention, the SSD has logic to compress a block of data to be stored in the SSD. If it is not possible to compress the block of data below the threshold, the SSD stores the block of data without any compression. If it is possible to compress the block of data below the threshold, the SSD compresses the block of data and stores the compressed data in the SSD. In one embodiment of the invention, the SSD has logic to dynamically adjust or select the strength of the error correcting code of the data that is stored in the SSD. In another embodiment of the invention, the SSD has logic to provide intra-page XOR protection of the data in the page.
    Type: Grant
    Filed: August 9, 2013
    Date of Patent: December 30, 2014
    Assignee: Intel Corporation
    Inventor: Jawad B. Khan
  • Patent number: 8924220
    Abstract: In a multiband compressor 100, a level calculation unit 121 calculates a signal level inputted for each of bands, a gain calculation unit 122 calculates a gain value from the calculated signal level, and a gain limitation unit 130 limits a gain value by comparison with a gain value of the other band in a compressor for each band. With this configuration, provided is a multiband compressor capable of achieving a balance between the quality of sound and the effect of enhancing the sound level at a high level.
    Type: Grant
    Filed: September 7, 2010
    Date of Patent: December 30, 2014
    Assignee: Lenovo Innovations Limited (Hong Kong)
    Inventor: Satoshi Hosokawa
  • Patent number: 8924200
    Abstract: 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 bandwidth of the audio signal extends beyond a bandwidth of the CELP-based decoder element. The method includes obtaining an up-sampled fixed codebook signal by up-sampling the fixed codebook component to a higher sample rate, obtaining an up-sampled excitation signal based on the up-sampled fixed codebook signal and an up-sampled pitch period value, and obtaining a composite output signal based on the up-sampled excitation signal and an output signal of the CELP-based decoder element, wherein the composite output signal includes a bandwidth portion that extends beyond a bandwidth of the CELP-based decoder element.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: December 30, 2014
    Assignee: Motorola Mobility LLC
    Inventors: Jonathan A. Gibbs, James P. Ashley, Udar Mittal
  • Patent number: 8903729
    Abstract: Many portable playback devices cannot decode and playback encoded audio content having wide bandwidth and wide dynamic range with consistent loudness and intelligibility unless the encoded audio content has been prepared specially for these devices. This problem can be overcome by including with the encoded content some metadata that specifies a suitable dynamic range compression profile by either absolute values or differential values relative to another known compression profile. A playback device may also adaptively apply gain and limiting to the playback audio. Implementations in encoders, in transcoders and in decoders are disclosed.
    Type: Grant
    Filed: February 3, 2011
    Date of Patent: December 2, 2014
    Assignees: Dolby Laboratories Licensing Corporation, Dolby International AB
    Inventors: Jeffrey Charles Riedmiller, Harald Helge Mundt, Michael Schug, Martin Wolters