Quantization Patents (Class 704/230)
  • Patent number: 10594529
    Abstract: A compander including a module configured to compress a range of amplitudes of a signal in accordance with a companding function derived using a calculus of variations approach and method for deriving the companding function.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: March 17, 2020
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventor: Stephen P DelMarco
  • Patent number: 10553227
    Abstract: An audio signal, having first and second regions of frequency spectrum, is coded. Spectral peaks in the first region are encoded by a first coding method. For a segment of the audio signal, a relation between energy of bands in the first and second regions is determined. A relation between the energy of the band in the second region and energy of neighboring bands in the second region is determined. A determination is made whether available bits are sufficient for encoding at least one non-peak segment of the first region and the band in the second region. Responsive to first and second relations fulfilling a respective predetermined criterion and a sufficient number of bits, encoding the band in the second region using a second coding method different from the first coding method, and otherwise, subjecting the band in the second region to BandWidth Extension (BWE) or noise fill.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: February 4, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Erik Norvell, Volodya Grancharov
  • Patent number: 10394510
    Abstract: A method for displaying content by an electronic device is provided. The method includes generating converted data by encoding a plurality of screen data according to first clocks, restoring the screen data by decoding the converted data based on second clocks separate from the first clocks, and displaying the restored screen data.
    Type: Grant
    Filed: November 16, 2015
    Date of Patent: August 27, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jong-Kon Bae, Dong-Kyoon Han, Dong-Hui Kim
  • Patent number: 10381018
    Abstract: Methods and apparatus for performing signal processing. The signal processing comprises demultiplexing input encoded data into data including information for a segment including frames and coefficient information for a coefficient selected in the frames of the segment, and low band encoded data, decoding the low band encoded data to produce a low band signal, selecting a coefficient of a frame to be processed from a plurality of the coefficients based on the data, calculating a high band sub-band power of a high band sub-band signal of each sub-band constituting a high band signal of the frame to be processed based on a low band sub-band signal of each sub-band constituting the low band signal of the frame to be processed and the selected coefficient, and producing the high band signal of the frame to be processed based on the high band sub-band power and the low band sub-band signal.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: August 13, 2019
    Assignee: Sony Corporation
    Inventors: Yuki Yamamoto, Toru Chinen, Hiroyuki Honma, Yuhki Mitsufuji
  • Patent number: 10349198
    Abstract: A method for compensating for acoustic influence of a listening room on an acoustic output from an audio system including at least a left and a right loudspeaker, the method comprising determining a left frequency response and a right frequency response, designing left and right compensation filters, and during playback applying the left and right filters to left and right input signals. The method further includes determining mono and side responses and designing mono and side compensation filters, and, during playback, applying the mono compensation filter to a mono signal based on the left and right input signals, and applying the side compensation filter to a side signal based on the left and right input signals. The filters are thus combined to provide left and right output signals which have been left/right filtered and mono/side filtered.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: July 9, 2019
    Assignee: BANG & OLUFSEN A/S
    Inventor: Jakob Dyreby
  • Patent number: 10311880
    Abstract: A system for processing compressed audio includes a signal enhancer module configured to generate one or more signal treatments. The one or more signal treatments may be generated by the signal enhancer module based on analysis of the incoming audio signal. Alternatively, or in addition, characteristics of the incoming audio signal may be provided to the signal enhancer module for use in generating the one or more signal treatments. The one or more signal treatments may be added to file audio signals.
    Type: Grant
    Filed: February 17, 2017
    Date of Patent: June 4, 2019
    Assignee: Harman International Industries, Incorporated
    Inventor: Gilbert Arthur Joseph Soulodre
  • Patent number: 10306634
    Abstract: According to an example, a communication device is described comprising a receiver configured to receive a signal, a divider configured to divide the signal into signal components, an estimator configured to estimate, for each signal component, an expected processing error which is made when, instead of a first processing scheme, a second processing scheme is used to process the signal component, wherein the first has a higher processing effort than the second, a determiner configured to determine, for each signal component, whether to process the signal component by the first or by the second processing scheme based on the expected processing errors.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: May 28, 2019
    Assignee: Intel IP Corporation
    Inventors: Holger Neuhaus, Rajarajan Balraj, Christian Faber, Bertram Gunzelmann
  • Patent number: 10230394
    Abstract: A method for compressing IQ data for high speed transport link and an associated device. The method comprises: determining, based on dynamical statistical distribution of the IQ data, one or more parameters of a companding function for a nonlinear companding operation (S310); applying the companding function with the determined one or more parameters on the IQ data (S320); performing uniform quantization on the IQ data to generate compressed IQ data (S330); and transmitting the compressed IQ (S340). And a method for decompressing compressed IQ data for high speed transport link, and an associated device.
    Type: Grant
    Filed: September 19, 2014
    Date of Patent: March 12, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Ang Feng, Chen Wang, Jinsong Yang
  • Patent number: 10224054
    Abstract: Methods and apparatus for performing signal processing. The signal processing comprises demultiplexing input encoded data into data including information for a segment including frames and coefficient information for a coefficient selected in the frames of the segment, and low band encoded data, decoding the low band encoded data to produce a low band signal, selecting a coefficient of a frame to be processed from a plurality of the coefficients based on the data, calculating a high band sub-band power of a high band sub-band signal of each sub-band constituting a high band signal of the frame to be processed based on a low band sub-band signal of each sub-band constituting the low band signal of the frame to be processed and the selected coefficient, and producing the high band signal of the frame to be processed based on the high band sub-band power and the low band sub-band signal.
    Type: Grant
    Filed: May 2, 2017
    Date of Patent: March 5, 2019
    Assignee: Sony Corporation
    Inventors: Yuki Yamamoto, Toru Chinen, Hiroyuki Honma, Yuhki Mitsufuji
  • Patent number: 10163445
    Abstract: Provided is an apparatus and method of encoding and decoding multiple channel signals based upon phase information and one or more residual signals.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: December 25, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jung Hoe Kim, Eun Mi Oh
  • Patent number: 10123135
    Abstract: A method transmits an audio signal from a transmitter to a receiver and a hearing device, particularly a hearing aid, contains a communication facility which is provided and configured for transmitting and/or receiving an audio signal according to the method. A hearing device system has two hearing devices and is provided and configured to transmit audio signals between the two hearing devices by their communication facilities according to the method.
    Type: Grant
    Filed: April 14, 2017
    Date of Patent: November 6, 2018
    Assignee: Sivantos Pte. Ltd.
    Inventors: Tobias Daniel Rosenkranz, Henning Puder
  • Patent number: 10109287
    Abstract: It is inter alia disclosed to quantize a vector of a plurality of coefficients using a predictive mode of operation of a vector quantizer, wherein the vector quantizer can operate in either a predictive mode of operation or a non-predictive mode of operation, determine a vector of a plurality of recovered coefficients; compare the vector of the plurality of coefficients to the vector of the plurality of recovered coefficients; and determine the mode of operation of the vector quantizer for a vector of a plurality of coefficients associated with a subsequent frame of audio samples, wherein the mode of operation is dependent on the comparison.
    Type: Grant
    Filed: October 30, 2012
    Date of Patent: October 23, 2018
    Assignee: Nokia Technologies Oy
    Inventors: Adriana Vasilache, Lasse Juhani Laaksonen, Anssi Sakari Rämö
  • Patent number: 10078669
    Abstract: The system includes a correlation extraction means for extracting at least one candidate for a correlation from a collected given data set, based on a relationship between units of data in the given data set; a correlation verification means for verifying whether or not the units of data in the given data set satisfy the correlation extracted by the correlation extraction means; and a data compression means for compressing the given data set with use of the correlation, based on the result of verification by the correlation verification means.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: September 18, 2018
    Assignee: NEC CORPORATION
    Inventors: Dominik Borowiec, Michal Welnicki
  • Patent number: 10077984
    Abstract: In an approach for collecting data, a computer identifies a virtual map of an environment. The computer determines a location associated with one or more autonomous devices within the identified virtual map. The computer provides to a first autonomous device of the one or more autonomous devices, navigation instructions from a determined location associated with the first autonomous device to a first training point. The computer collects training data associated with the first training point through the first autonomous device.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: September 18, 2018
    Assignee: International Business Machines Corporation
    Inventors: Ben Z. Akselrod, Anthony DiLoreto, Steve McDuff, Kyle D. Robeson
  • Patent number: 9842598
    Abstract: A method for mitigating potential frame instability by an electronic device is described. The method includes obtaining a frame subsequent in time to an erased frame. The method also includes determining whether the frame is potentially unstable. The method further includes applying a substitute weighting value to generate a stable frame parameter if the frame is potentially unstable.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: December 12, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Subasingha Shaminda Subasingha, Venkatesh Krishnan, Vivek Rajendran
  • Patent number: 9830919
    Abstract: An acoustic signal coding apparatus includes a subband classifier that classifies subbands obtained by dividing a frequency-domain spectrum into a plurality of perceptually important first-category subbands and the other subbands referred to as second-category subbands according to at least one of measures in terms of energy and peak property, a subband peak-algebraic vector quantization (SBP-AVQ) vector generator that generates an SBP-AVQ vector by collecting a maximum peak from each first-category subband, outputs the generated SBP-AVQ vector, and outputs peak position information indicating the positions of the maximum peaks, a bit distributor that distributes bits for AVQ coding to the SBP-AVQ vector and the second-category subband vector, and an AVQ coder that performs AVQ coding on the SBP-AVQ vector and the second-category subband vector.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: November 28, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Srikanth Nagisetty, Zongxian Liu, Hiroyuki Ehara
  • Patent number: 9817054
    Abstract: Methods and apparatus relating to electrical margining of multi-parameter high-speed interconnect links with multi-sample probing are described. In one embodiment, logic is provided to generate one or more parameter values, corresponding to an electrical operating margin of an interconnect. The one or more parameter values are generated based on a plurality of eye observation sets to be detected in response to operation of the interconnect in accordance with a plurality of parameter sets (e.g., by using quantitative optimization techniques). In turn, the interconnect is to be operated at the one or more parameter values if it is determined that the one or more parameter values cause the interconnect to operate at an optimum level relative to an operation of the interconnect in accordance with one or more less optimum parameter levels. Other embodiments are also disclosed and claimed.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: November 14, 2017
    Assignee: Intel Corporation
    Inventors: Thanunathan Rangarajan, Shreesh Chhabbi, Arvind A. Kumar, Venkatraman Iyer
  • Patent number: 9812136
    Abstract: An audio processing system (100) comprises a front-end component (102, 103), which receives quantized spectral components and performs an inverse quantization, yielding a time-domain representation of an intermediate signal. The audio processing system further comprises a frequency-domain processing stage (104, 105, 106, 107, 108), configured to provide a time-domain representation of a processed audio signal, and a sample rate converter (109), providing a reconstructed audio signal sampled at a target sampling frequency. The respective internal sampling rates of the time-domain representation of the intermediate audio signal and of the time-domain representation of the processed audio signal are equal. In particular embodiments, the processing stage comprises a parametric upmix stage which is operable in at least two different modes and is associated with a delay stage that ensures constant total delay.
    Type: Grant
    Filed: September 1, 2016
    Date of Patent: November 7, 2017
    Assignee: Dolby International AB
    Inventors: Kristofer Kjoerling, Heiko Purnhagen, Lars Villemoes
  • Patent number: 9786292
    Abstract: An audio encoding apparatus capable of reducing the bit rate even if a codebook having a larger codebook number is selected in a split multi-rate lattice vector quantization is provided. Sub-vector determining unit (121) determines, in the spectrum of an input signal having been divided into a predetermined number of sub-vectors, a sub-vector using the largest number of bits. Positional information encoding unit (122) encodes the positional information of the determined sub-vector. Codebook indication value estimating unit (124) estimates a number of used bits for a codebook indication value of the largest number of used bits by use of the (N?1) other codebook indication values, and generates a number-of-used-bits estimation value. Difference calculating unit (125) calculates a difference by subtracting the number-of-used-bits estimation value from the actual value of the codebook indication value of the largest number of used bits. Difference encoding unit (126) encodes the difference information.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: October 10, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Zongxian Liu, Masahiro Oshikiri
  • Patent number: 9741353
    Abstract: An apparatus for generating a frequency enhancement signal has: a signal generator for generating an enhancement signal from a core signal, the enhancement signal having an enhancement frequency range not included in the core signal, wherein a current time portion of the enhancement signal or the core signal has subband signals for a plurality of subbands; a controller for calculating the same smoothing information for the plurality of subband signals of the enhancement frequency range or the core signal, and wherein the signal generator is configured for smoothing the plurality of subband signals of the enhancement frequency range or the core signal using the same smoothing information.
    Type: Grant
    Filed: July 29, 2015
    Date of Patent: August 22, 2017
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Sascha Disch, Ralf Geiger, Christian Helmrich, Markus Multrus, Konstantin Schmidt
  • Patent number: 9716894
    Abstract: A video coder applies a residual differential pulse code modulation technique to a residual data of a block coded using lossy coding. The block may be coded without application of a transform to the residual data.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: July 25, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Rajan Laxman Joshi, Joel Sole Rojals, Marta Karczewicz
  • Patent number: 9704497
    Abstract: Method of audio power reduction and thermal mitigation using psychoacoustic techniques starts by receiving a decoded audio signal in a reproduction system. Decoded audio signal is a signal that is decompressed and to be played back by a speaker. A masking curve is generated based on psychoacoustic models and the decoded audio signal. The masking curve is applied to the decoded audio signal to remove unheard frequencies and to generate a power-reduced audio signal. Other embodiments are also described.
    Type: Grant
    Filed: July 6, 2015
    Date of Patent: July 11, 2017
    Assignee: Apple Inc.
    Inventors: Simon K. Porter, Eric A. Allamanche, Richard M. Powell
  • Patent number: 9679580
    Abstract: Methods and apparatus for performing signal processing. The signal processing comprises demultiplexing input encoded data into data including information for a segment including frames and coefficient information for a coefficient selected in the frames of the segment, and low band encoded data, decoding the low band encoded data to produce a low band signal, selecting a coefficient of a frame to be processed from a plurality of the coefficients based on the data, calculating a high band sub-band power of a high band sub-band signal of each sub-band constituting a high band signal of the frame to be processed based on a low band sub-band signal of each sub-band constituting the low band signal of the frame to be processed and the selected coefficient, and producing the high band signal of the frame to be processed based on the high band sub-band power and the low band sub-band signal.
    Type: Grant
    Filed: January 22, 2016
    Date of Patent: June 13, 2017
    Assignee: Sony Corporation
    Inventors: Yuki Yamamoto, Toru Chinen, Hiroyuki Honma, Yuhki Mitsufuji
  • Patent number: 9635371
    Abstract: An apparatus for coding video information according to certain aspects includes a memory and a processor. The memory unit is configured to store video information associated with a reference layer picture and an enhancement layer picture. The processor is configured to: store video information associated with a reference layer picture and an enhancement layer picture; receive a scale factor that indicates a proportion of scaling between the reference layer picture and the enhancement layer picture in a first direction; determine, without performing a division operation, a rounding offset value using the scale factor; and determine a coordinate in the first direction of a first sample located in the reference layer picture that corresponds to a second sample located in the enhancement layer picture using the scale factor and the rounding offset value.
    Type: Grant
    Filed: May 27, 2014
    Date of Patent: April 25, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Vadim Seregin, Jianle Chen
  • Patent number: 9576584
    Abstract: A system for processing compressed audio includes a signal enhancer module configured to generate one or more signal treatments. The one or more signal treatments may be generated by the signal enhancer module based on analysis of the incoming audio signal. Alternatively, or in addition, characteristics of the incoming audio signal may be provided to the signal enhancer module for use in generating the one or more signal treatments. The one or more signal treatments may be added to file audio signals.
    Type: Grant
    Filed: September 3, 2015
    Date of Patent: February 21, 2017
    Assignee: Harman International Industries, Incorporated
    Inventor: Gilbert Arthur Joseph Soulodre
  • Patent number: 9570082
    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: February 24, 2015
    Date of Patent: February 14, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jung-hoe Kim, Eun-mi Oh
  • Patent number: 9524726
    Abstract: An audio signal decoder includes a context-based spectral value decoder configured to decode a codeword describing one or more spectral values or at least a portion of a number representation thereof in dependence on a context state. The audio signal decoder also includes a context state determinator configured to determine a current context state in dependence on one or more previously decoded spectral values and a time warping frequency-domain-to-time-domain converter configured to provide a time-warped time-domain representation of a given audio frame on the basis of a set of decoded spectral values provided by the context-based spectral value decoder and in dependence on the time warp information. The context-state determinator is configured to adapt the determination of the context state to a change of a fundamental frequency between subsequent audio frames. An audio signal encoder applies a comparable concept.
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: December 20, 2016
    Assignees: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V., Dolby International AB
    Inventors: Stefan Bayer, Tom Baeckstroem, Ralf Geiger, Bernd Edler, Sascha Disch, Lars Villemoes
  • Patent number: 9520134
    Abstract: A system for processing compressed audio includes a signal enhancer module configured to generate one or more signal treatments. The one or more signal treatments may be generated by the signal enhancer module based on analysis of the incoming audio signal. Alternatively, or in addition, characteristics of the incoming audio signal may be provided to the signal enhancer module for use in generating the one or more signal treatments. The one or more signal treatments may be added to file audio signals.
    Type: Grant
    Filed: September 3, 2015
    Date of Patent: December 13, 2016
    Assignee: Harman International Industries, Incorporated
    Inventor: Gilbert Arthur Joseph Soulodre
  • Patent number: 9508355
    Abstract: Exemplary embodiments may provide a method of encoding an audio signal. The method includes: segmenting the audio signal into a plurality of frames, wherein each of the frames includes M samples and M is a natural number greater than one; applying a first window, a second window, and at least one third window to the frames, wherein a length of the second window is longer than a length of the first window, and a length of the third window is longer than the length of the first window and shorter than the length of the second window; time-frequency transforming the frames to which the first window, the second window, and the at least one third window have been applied; and generating a bitstream including the time-frequency transformed frames.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: November 29, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Nam-suk Lee, Hyun-wook Kim, Han-gil Moon
  • Patent number: 9449608
    Abstract: The document relates to modulated sub-sampled digital filter banks, as well as to methods and systems for the design of such filter banks. In particular, the present document proposes a method and apparatus for the improvement of low delay modulated digital filter banks. The method employs modulation of an asymmetric low-pass prototype filter and a new method for optimizing the coefficients of this filter. Further, a specific design for a 64 channel filter bank using a prototype filter length of 640 coefficients and a system delay of 319 samples is given. The method substantially reduces artifacts due to aliasing emerging from independent modifications of subband signals, for example when using a filter bank as a spectral equalizer. The method is preferably implemented in software, running on a standard PC or a digital signal processor (DSP), but can also be hardcoded on a custom chip.
    Type: Grant
    Filed: June 17, 2014
    Date of Patent: September 20, 2016
    Assignee: Dolby International AB
    Inventor: Per Ekstrand
  • Patent number: 9406312
    Abstract: Methods and apparatus for performing signal processing. The signal processing comprises demultiplexing input encoded data into data including information for a segment including frames and coefficient information for a coefficient selected in the frames of the segment, and low band encoded data, decoding the low band encoded data to produce a low band signal, selecting a coefficient of a frame to be processed from a plurality of the coefficients based on the data, calculating a high band sub-band power of a high band sub-band signal of each sub-band constituting a high band signal of the frame to be processed based on a low band sub-band signal of each sub-band constituting the low band signal of the frame to be processed and the selected coefficient, and producing the high band signal of the frame to be processed based on the high band sub-band power and the low band sub-band signal.
    Type: Grant
    Filed: April 11, 2011
    Date of Patent: August 2, 2016
    Assignee: Sony Corporation
    Inventors: Yuki Yamamoto, Toru Chinen, Hiroyuki Honma, Yuhki Mitsufuji
  • Patent number: 9390720
    Abstract: An encoder performs context-adaptive arithmetic encoding of transform coefficient data. For example, an encoder switches between coding of direct levels of quantized transform coefficient data and run-level coding of run lengths and levels of quantized transform coefficient data. The encoder can determine when to switch between coding modes based on a pre-determined switch point or by counting consecutive coefficients having a predominant value (e.g., zero). A decoder performs corresponding context-adaptive arithmetic decoding.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: July 12, 2016
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Sanjeev Mehrotra, Wei-Ge Chen
  • Patent number: 9336787
    Abstract: Provided is an encoding apparatus. A threshold value calculating unit (32) calculates a threshold value from a statistical amount of conversion factors of an extended band. A representative conversion factor extracting unit (33) uses the calculated threshold value to extract conversion factors having large amplitudes. If the number of extracted conversion factors does not reach a specified number, the threshold value calculating unit (32) determines, in accordance with a lacking number of conversion factors, an amount by which the threshold value should be lowered, and modifies the threshold value accordingly. The representative conversion factor extracting unit (33) uses the threshold value, which has been modified, to extract conversion factors.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: May 10, 2016
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Takuya Kawashima, Masahiro Oshikiri
  • Patent number: 9311922
    Abstract: Multiple channels of audio are combined either to a monophonic composite signal or to multiple channels of audio along with related auxiliary information from which multiple channels of audio are reconstructed, including improved downmixing of multiple audio channels to a monophonic audio signal or to multiple audio channels and improved decorrelation of multiple audio channels derived from a monophonic audio channel or from multiple audio channels. Aspects of the disclosed invention are usable in audio encoders, decoders, encode/decode systems, downmixers, upmixers, and decorrelators.
    Type: Grant
    Filed: February 5, 2015
    Date of Patent: April 12, 2016
    Assignee: Dolby Laboratories Licensing Corporation
    Inventor: Mark F. Davis
  • Patent number: 9311923
    Abstract: A media signal is accessed, which has been generated with one or more first processing operations. The media signal includes one or more sets of artifacts, which respectively result from the one or more processing operations. One or more features are extracted from the accessed media signal. The extracted features each respectively correspond to the one or more artifact sets. Based on the extracted features, a conditional probability score and/or a heuristically based score is computed, which relates to the one or more first processing operations.
    Type: Grant
    Filed: May 15, 2012
    Date of Patent: April 12, 2016
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Regunathan Radhakrishnan, Sevinc Bayram, Jeffrey Riedmiller
  • Patent number: 9257128
    Abstract: Provided are an apparatus and method for coding and decoding a multi object audio signal with multi channel. The apparatus includes: a multi channel encoding means for down-mixing an audio signal including a plurality of channels, generating a spatial cue for the audio signal including the plurality of channels, and generating first rendering information including the generated spatial cue; and a multi object encoding unit for down-mixing an audio signal including a plurality of objects, which includes the down-mixed signal from the multi channel encoding unit, generating a spatial cue for the audio signal including the plurality of objects, and generating second rendering information including the generated spatial cue, wherein the multichannel encoding unit generates a spatial cue for the audio signal including the plurality of objects regardless of a Coder-DECoder (CODEC) scheme the limits the multi channel encoding unit.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: February 9, 2016
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Seung-Kwon Beack, Jeong-Il Seo, Tae-Jin Lee, Dae-Young Jang, Kyeong-Ok Kang, Jin-Woo Hong, Jin-Woong Kim
  • Patent number: 9230554
    Abstract: In encoding, the number of bits to be assigned to codes corresponding to noise or a pulse sequence obtained according to prediction analysis applied to time series signals included in a predetermined time interval is switched according to whether an index that indicates a level of periodicity and/or stationarity of input time series signals satisfies a condition that indicates high periodicity and/or high stationarity or a condition that indicates low periodicity and/or low stationarity, to acquire the codes corresponding to the noise and the pulse sequence. In decoding, a decoding mode for codes corresponding to noise or a pulse sequence included in codes corresponding to a predetermined time interval is switched according to the same criterion as that described above to decode the codes corresponding to the noise or the pulse sequence to acquire noise or a pulse sequence corresponding to the predetermined time interval.
    Type: Grant
    Filed: February 8, 2012
    Date of Patent: January 5, 2016
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Takehiro Moriya, Noboru Harada, Yutaka Kamamoto, Yusuke Hiwasaki, Masahiro Fukui
  • Patent number: 9135922
    Abstract: The present invention provides a method for processing audio signals, and the method comprises the steps of: receiving input audio signals corresponding to a plurality of spectral coefficients; obtaining location information that indicates a location of a particular spectral coefficient among said spectral coefficients, on the basis of energy of said input signals: generating a shape vector by using said location information and said spectral coefficients; determining a codebook index by searching for a codebook corresponding to said shape vector; and transmitting said codebook index and said location information, wherein said shape vector is generated by using a part which is selected from said spectral coefficients, and said selected part is selected on the basis of said location information.
    Type: Grant
    Filed: August 23, 2011
    Date of Patent: September 15, 2015
    Assignee: LG Electronics Inc.
    Inventors: Changheon Lee, Gyuhyeok Jeong, Lagyoung Kim, Hyejeong Jeon, Byungsuk Lee, Ingyu Kang
  • Patent number: 9136980
    Abstract: Certain aspects of the present disclosure relate to techniques for low-complexity encoding (compression) of broad class of signals, which are typically not well modeled as sparse signals in either time-domain or frequency-domain. First, the signal can be split in time-segments that may be either sparse in time domain or sparse in frequency domain, for example by using absolute second order differential operator on the input signal. Next, different encoding strategies can be applied for each of these time-segments depending in which domain the sparsity is present.
    Type: Grant
    Filed: August 30, 2011
    Date of Patent: September 15, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Pawan Kumar Baheti, Harinath Garudadri, Yuejie Chi
  • Patent number: 9135920
    Abstract: A system for processing compressed audio includes a signal enhancer module configured to generate one or more signal treatments. The one or more signal treatments may be generated by the signal enhancer module based on analysis of the incoming audio signal. Alternatively, or in addition, characteristics of the incoming audio signal may be provided to the signal enhancer module for use in generating the one or more signal treatments. The one or more signal treatments may be added to the audio signals.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: September 15, 2015
    Assignee: HARMAN INTERNATIONAL INDUSTRIES, INCORPORATED
    Inventor: Gilbert Arthur Joseph Soulodre
  • Patent number: 9105270
    Abstract: The present disclosure proposes a method and an apparatus to enhance reverberated speech by applying reverberation detection in conjunction with reverberation cancellation. The reverberation detection is based on Kurtosis of cross correlation of LPC residue and outputs the result of the reverberation detection to the reverberation cancelling system. The reverberation cancellation receives the result from the reverberation detection, and the cancellation is based on dual adaptive filtering in LP residue and time domain.
    Type: Grant
    Filed: February 8, 2013
    Date of Patent: August 11, 2015
    Assignee: ASUSTeK COMPUTER INC.
    Inventor: Bhoomek D. Pandya
  • Patent number: 9083403
    Abstract: Briefly, in accordance with one or more embodiments, a wireless signal is transmitted to a remote device. The remote device determines a precoding matrix indicator (PMI) in response to the wireless signal based at least in part on a hierarchical codebook. The PMI is then received as reported back from the remote device.
    Type: Grant
    Filed: January 12, 2015
    Date of Patent: July 14, 2015
    Assignee: Intel Corporation
    Inventors: Xintian E. Lin, Qinghua Li, Keith A. Holt, Raymond C. Blackham, Minnie Ho
  • Patent number: 9055374
    Abstract: A method and apparatus for determining an auditory pattern associated with an audio segment. An average intensity at each of a first plurality of detector locations on an auditory scale based at least in part on a first plurality of frequency components that describe a signal is determined. A plurality of tonal bands in the audio segment, wherein each tonal band comprises a particular range of detector locations of the first plurality of detector locations is determined. Corresponding strongest frequency components in the tonal bands are determined. A plurality of non-tonal bands is determined, and each non-tonal band is subdivided into multiple sub-bands. Corresponding combined frequency components that are representative of a combined sum of intensities of the first plurality of frequency components that is in a corresponding sub-band are determined. An auditory based on the corresponding strongest frequency components and the corresponding combined frequency components is determined.
    Type: Grant
    Filed: June 24, 2010
    Date of Patent: June 9, 2015
    Assignee: Arizona Board of Regents for and on behalf of Arizona State University
    Inventors: Harish Krishnamoorthi, Andreas Spanias, Visar Berisha
  • Publication number: 20150149161
    Abstract: In a quantization method for quantizing a received excitation signal in a communication system performing the steps of re-shuffling S301 the elements of the received excitation signal to provide a re-shuffled excitation signal; coding S302 the re-shuffled excitation signal with a variable bit-rate algorithm to provide a coded excitation signal; and reassigning S303 codewords of the coded excitation signal if a number of used bits exceeds a predetermined fixed bit rate requirement to provide a quantized excitation signal.
    Type: Application
    Filed: November 13, 2012
    Publication date: May 28, 2015
    Applicant: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Volodya Grancharov, Erik Norvell, Sigurdur Sverrisson
  • Patent number: 9037454
    Abstract: 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 polar quantization of MCLT magnitude and phase coefficients. Further, quantized magnitude and phase coefficients are predicted based on properties of the audio signal and corresponding MCLT coefficients to reduce the bit rate overhead in encoding the audio signal. This prediction allows the Overcomplete Audio Coder to provide improved continuity of the magnitude of spectral components across encoded signal blocks, thereby reducing warbling artifacts. Coding rates achieved using these prediction techniques are comparable to that of encoding an orthogonal representation of an audio signal, such as with modulated lapped transform (MLT)-based coders.
    Type: Grant
    Filed: June 20, 2008
    Date of Patent: May 19, 2015
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Byung-Jun Yoon, Henrique S. Malvar
  • Patent number: 9026451
    Abstract: 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 effective than pre-filtering is derived. A practical paired-zero filter design for the low-rate regime is proposed, and this design is extended to handle frequency-dependent periodicity levels. Further, the methods described provide a general performance measure for a post-filter that only uses information available at the decoder, thereby allowing for the optimization or selection of a post-filter without increasing the rate.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: May 5, 2015
    Assignee: Google Inc.
    Inventors: Willem Bastiaan Kleijn, Jan Skoglund
  • Patent number: 9026434
    Abstract: 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 configured to code the input audio based on the set operation mode such that when the set operation mode is a high frame erasure rate (FER) mode the codec codes a current frame of the input audio according to a select frame erasure concealment (FEC) mode of one or more FEC modes. Upon the setting of the operation mode to be the High FER mode the one FEC mode is selected, from the one or more FEC modes predetermined for the High FER mode, to control the codec by incorporating of redundancy within a coding of the input audio or as separate redundancy information separate from the coded input audio according to the selected one FEC mode.
    Type: Grant
    Filed: April 10, 2012
    Date of Patent: May 5, 2015
    Assignee: Samsung Electronic Co., Ltd.
    Inventors: Steven Craig Greer, Hosang Sung
  • Patent number: 9025899
    Abstract: A method for compressing an image includes decomposing the image into one or more regions. A region of the image is selected to be evaluated. The selected region is transformed and quantized if the region does not meet a predetermined compression acceptability criteria. The predetermined compression acceptability criteria may include a specific bit rate, a specific image quality, or combinations thereof. If the region does not meet the predetermined compression acceptability criteria after the region has been transformed and quantized, then the transformation and quantization settings are adjusted and the region is transformed and quantized using the adjusted settings. The region is then encoded when the predetermined compression acceptability criteria has been reached. The encoding may include additional compression stages.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: May 5, 2015
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Andrew S. Pomianowski, Konstantine Iourcha
  • Patent number: 9014377
    Abstract: An audio signal is processed in the frequency domain to convert an input signal format to an output signal format. That is, a multichannel audio signal intended for playback over a predefined speaker layout can be formatted to achieve spatial reproduction over a different layout comprising a different number of speakers.
    Type: Grant
    Filed: March 13, 2008
    Date of Patent: April 21, 2015
    Assignee: Creative Technology Ltd
    Inventors: Michael M. Goodwin, Jean-Marc Jot
  • Patent number: RE46082
    Abstract: An apparatus and method of low bit rate encoding and reproducing. The method includes transforming input audio signals in a time domain into spectral signals in a frequency domain, extracting important-spectrum components from the spectral signals in the frequency domain, and quantizing the important-spectrum components, extracting residual-spectrum components other than the important-spectrum components from the spectral signals in the frequency domain, and calculating and quantizing a noise level of the residual-spectrum components, and encoding the quantized important-spectrum components and the quantized noise level losslessly, and outputting encoded bitstreams.
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: July 26, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Junghoe Kim, Eunmi Oh, Boris Kudryashov, Konstantin Osipov