Adaptive Bit Allocation Patents (Class 704/229)
  • Patent number: 10319461
    Abstract: Embodiments are generally directed to a low-overhead mechanism to detect address faults in ECC-protected memories. An embodiment of an apparatus includes a memory array; an error correction code (ECC) encoder for the memory array to encode ECC values based on a data value and a respective address value for the data value; and an ECC decoder for the memory array to decode ECC values that are based on data values and respective addresses for the data values; wherein the apparatus is to detect and correct an error in an address value based on an ECC value, address value, and data value stored in the memory.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: June 11, 2019
    Assignee: Intel Corporation
    Inventors: Kon-Woo Kwon, Vivek Kozhikkottu, Dinesh Somasekhar
  • Patent number: 10313675
    Abstract: A method includes determining whether a rate distortion cost of a compressed video is above a cost threshold, the compressed video being encoded using a first constant rate factor (CRF). Upon determining the quality of a compressed video is above a cost threshold calculating a second CRF based on the first CRF, and encoding a video associated with the compressed video using the second CRF. Upon determining the quality of a compressed video is below a cost threshold encoding the video using the first CRF and a target bitrate.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: June 4, 2019
    Assignee: GOOGLE LLC
    Inventors: Yao-Chung Lin, Anil Christopher Kokaram, Andrew Joseph Crawford, Hugh Pierre Denman
  • Patent number: 10297262
    Abstract: A system for generating comfort noise for a stream of frames carrying an audio signal includes frame characterizing logic configured to generate a set of filter parameters characterising the frequency content of a frame; an analysis filter adapted using the filter parameters and configured to filter the frame so as to generate residual samples; an analysis controller configured to cause the residual samples to be stored in a store responsive to receiving an indication that the frame does not comprise speech; and a synthesis controller operable to select stored residual samples from the store and cause a synthesis filter, inverse to the analysis filter and adapted using filter parameters generated by the frame characterizing logic for one or more frames not comprising speech, to filter the selected residual samples so as to generate a frame of comfort noise.
    Type: Grant
    Filed: July 10, 2017
    Date of Patent: May 21, 2019
    Assignee: Imagination Technologies Limited
    Inventors: Senthil Kumar Mani, Srinivas Akella
  • Patent number: 10236002
    Abstract: A method and device for decoding a signal. The method for decoding a signal includes: obtaining spectral coefficients of sub-bands from a received bitstream by means of decoding; classifying sub-bands in which the spectral coefficients are located into a sub-band with saturated bit allocation and a sub-band with unsaturated bit allocation; performing noise filling on a spectral coefficient that has not been obtained by means of decoding and is in the sub-band with unsaturated bit allocation, so as to restore the spectral coefficient that has not been obtained by means of decoding; and obtaining a frequency domain signal according to the spectral coefficients obtained by means of decoding and the restored spectral coefficient. Therefore, a sub-band with unsaturated bit allocation in a frequency domain signal may be obtained by classification, thereby improving signal decoding quality.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: March 19, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Zexin Liu, Fengyan Qi, Lei Miao
  • Patent number: 10212522
    Abstract: The present invention relates to a multi-channel digital microphone, comprising: an array pickup unit and a processing unit, the array pickup unit comprises a plurality of pickup modules, arranged in array form, wherein each of the pick-up modules picks up the audio signals of the spatial region component, the array pickup unit converts a plurality of the audio signals of the spatial region component to a plurality of digital signal and outputs it; the pickup unit is connected to the processing unit, configured to extract and denoise the plurality of digital signals. The present invention adds a spatial region based on the time region and frequency region so that a pick-up de-noising process can be done for these received signals from different spatial directions.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: February 19, 2019
    Assignee: YUTOU TECHNOLOGY (HANGZHOU) CO., LTD.
    Inventors: Xin Liu, Yujin Chen, Yongjun Zhou
  • Patent number: 10199049
    Abstract: A method for spectrum recovery in spectral decoding of an audio signal, comprises obtaining of an initial set of spectral coefficients representing the audio signal, and determining a transition frequency. The transition frequency is adapted to a spectral content of the audio signal. Spectral holes in the initial set of spectral coefficients below the transition frequency are noise filled and the initial set of spectral coefficients are bandwidth extended above the transition frequency. Decoders and encoders being arranged for performing part of or the entire method are also illustrated.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: February 5, 2019
    Assignee: Telefonaktiebolaget LM Ericsson
    Inventors: Gustaf Ullberg, Manuel Briand, Anisse Taleb
  • Patent number: 10176815
    Abstract: Described are techniques for determining whether a received audio signal is corrupted or a product of noise, prior to decoding the entire signal. A received audio signal may include both initialization data and encoded payload data. Correspondence between the initialization data and confirmation data may be determined. If the correspondence indicates a match, the audio receiver may continue decoding the audio signal to access the payload data. If the correspondence does not indicate a match, the audio receiver may cease decoding, which may conserve power, computing resources, and time, ensuring that subsequent audio signals are not missed while the audio receiver decodes a false or corrupted signal.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: January 8, 2019
    Assignee: AMAZON TECHNOLOGIES, INC.
    Inventors: Krystian Jozef Chmiel, David George Butler, Richard William Mincher, Andrew David Price
  • Patent number: 10153792
    Abstract: Methods, apparatuses, and systems for using Digital Signal Processing (DSP) to detect, measure, and/or compensate for, antenna load mismatch are described. One method provides a test sweep signal as digital input to a Digital-to-Analog Converter (DAC) in a transmit path ending with an antenna, and determines a transmit transfer function based on the digital input and digital output from an Analog-to-Digital Converter (ADC) in a loopback path which is electrically connected in parallel with a load impedance of the antenna. The determined transmit transfer function may be used for any of detecting, measuring, and compensating for, antenna mismatch.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: December 11, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Marco Merlin, Albert Cesari-Bohigas, Alexander Thoukydides, Dean Armstrong
  • Patent number: 10152981
    Abstract: Embodiments of the present disclosure provide signal encoding and decoding methods and devices. The method includes: determining, a quantity k of subbands to be encoded, where i is a positive number, and k is a positive integer; selecting, according to quantized envelopes of all subbands, k subbands from all the subbands, or selecting k subbands from all subbands according to a psychoacoustic model; and performing a first-time encoding operation on spectral coefficients of the k subbands. In the embodiments of the present disclosure, the quantity k of subbands to be encoded is determined according to the quantity of available bits and the first saturation threshold, and encoding is performed on the k subbands that are selected from all the subbands, instead of on an entire frequency band, which can reduce spectrum holes of a signal obtained through decoding, and therefore, can improve auditory quality of an output signal.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: December 11, 2018
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Zexin Liu, Lei Miao, Chen Hu
  • Patent number: 10074382
    Abstract: The present document relates to the determination of a 200 bitrate related to an encoded bitstream, and describes a method for determining an estimate of a bitrate of a bitstream comprising a sequence of frames comprising a varying number of bitsand corresponding to excerpts of an audio and/or video signal. At least two frames of the sequence of frames comprise a parameter indicative of a processing delay for the corresponding frame. The method comprises determining: a total number of bits for a subsequence of frames from the bitstream; a corrected number 201 of frames based on a number of frames comprised within the subsequence and the parameters of at least two frames of the subsequence; and a lower bitrate bound and an upper bitrate bound of the bitrate based on the total number of bits, the corrected number of frames and a frame rate of the bitstream.
    Type: Grant
    Filed: November 27, 2014
    Date of Patent: September 11, 2018
    Assignee: Dolby International AB
    Inventors: Holger Hoerich, Alexander Groeschel, Jens Popp, Marc Roessler, Malte Schmidt
  • Patent number: 10049677
    Abstract: The present technology relates to an encoding device and a method, a decoding device and a method, and a program that enables acquisitions of high-quality sound even in a resource-poor setting. A demultiplexer demultiplexes a supplied code string, to obtain the quantized low-band spectrum, the spectral characteristic code, and the quantized expansion coefficient(s). At this point, the code string includes a single quantized expansion coefficient or quantized expansion coefficients of the respective bands in the high band depending on the spectral characteristic code. A spectral inverse quantization unit obtains the low-band spectrum by inversely quantizing the quantized low-band spectrum. An expansion coefficient inverse quantization unit obtains the expansion coefficient(s) by inversely quantizing the quantized expansion coefficient(s).
    Type: Grant
    Filed: July 23, 2015
    Date of Patent: August 14, 2018
    Assignee: Sony Corporation
    Inventors: Shuichiro Nishigori, Shiro Suzuki
  • Patent number: 9972334
    Abstract: A device includes a decoder configured to receive an encoded audio signal at a decoder and to generate a synthesized signal based on the encoded audio signal. The device further includes a classifier configured to classify the synthesized signal based on at least one parameter determined from the encoded audio signal.
    Type: Grant
    Filed: May 12, 2016
    Date of Patent: May 15, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Subasingha Shaminda Subasingha, Vivek Rajendran, Venkata Subrahmanyam Chandra Sekhar Chebiyyam, Venkatraman Atti, Pravin Kumar Ramadas, Daniel Jared Sinder, Stephane Pierre Villette
  • Patent number: 9959887
    Abstract: An automatic speech recognition system and a method performed by an automatic speech recognition system are provided. The method includes performing at least two passes of speech activity detection on an acoustic utterance uttered by a speaker. The at least two passes include an initial pass and a subsequent pass. The method further includes estimating at least one of feature statistics and transforms for acoustic feature extraction and acoustic modeling based on an output of an initial pass. The method further includes performing automatic speech recognition using an output of the subsequent pass while bypassing an output of the initial pass to recognize the acoustic utterance.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: May 1, 2018
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Hong-Kwang J. Kuo, Lidia L. Mangu, Samuel Thomas
  • Patent number: 9911432
    Abstract: The invention relates to a method for extending the frequency band of an audio signal during a decoding or improvement process comprising a step of decoding or extracting, in a first so-called low frequency band, an excitation signal and coefficients of a linear prediction filter. The method comprises the following steps: —obtaining a signal extended in at least a second frequency band higher than the first frequency band from an oversampled excitation signal extended in at least a second frequency band; —scaling the extended signal by means of a gain defined by subframe on the basis of an energy ratio of a frame and of a subframe; —filtering said scaled extended signal with a linear prediction filter of which the coefficients are derived from the coefficients of the low frequency band filter. The invention also relates to a frequency band extension device implementing the described method and a decoder comprising such a device.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: March 6, 2018
    Assignee: ORANGE
    Inventors: Magdalena Kaniewska, Stephane Ragot
  • Patent number: 9905236
    Abstract: An audio communication endpoint receives a bitstream containing spectral components representing spectral content of an audio signal, wherein the spectral components relate to a first range extending up to a first break frequency, above which any spectral components are unassigned. The endpoint adapts the received bitstream in accordance with a second range extending up to a second break frequency by removing spectral components or adding neutral-valued spectral components relating to a range between the first and second break frequencies. The endpoint then attenuates spectral content in a neighborhood of the least of the first and second break frequencies for thereby achieving a gradual spectral decay. After this, reconstructing the audio signal is reconstructed by an inverse transform operating on spectral components relating to said second range in the adapted and attenuated received bitstream. At small computational expense, the endpoint may to adapt to different sample rates in received bitstreams.
    Type: Grant
    Filed: March 21, 2013
    Date of Patent: February 27, 2018
    Assignees: Dolby Laboratories Licensing Corporation, Dolby International AB
    Inventors: Heiko Purnhagen, Leif Sehlstrom, Lars Villemoes, Glenn N. Dickins, Mark S. Vinton
  • Patent number: 9892722
    Abstract: A method and computer program product for dynamically balancing the active noise cancellation value at a first and second earphone interface of a headphone device. The method enables determination of a first active noise cancellation value of an anti-noise output signal at a first interface. The method determines a second active noise cancellation value of the anti-noise output signal at a second interface. A comparison is made between the first active noise cancellation value and the second active noise cancellation value. In response to the first active noise cancellation value and the second active noise cancellation value being outside of a predetermined margin of each other, at least one adjustable parameter associated with the anti-noise output signal is dynamically adjusted to balance active noise cancellation values at the first and second headphone nterface.
    Type: Grant
    Filed: November 17, 2016
    Date of Patent: February 13, 2018
    Assignee: Motorola Mobility LLC
    Inventors: Kevin Bastyr, Robert Zurek
  • Patent number: 9881627
    Abstract: An audio signal transmission device for encoding an audio signal includes an audio encoding unit that encodes an audio signal and a side information encoding unit that calculates and encodes side information from a look-ahead signal. An audio signal receiving device for decoding an audio code and outputting an audio signal includes: an audio code buffer that detects packet loss based on a received state of an audio packet, an audio parameter decoding unit that decodes an audio code when an audio packet is correctly received, a side information decoding unit that decodes a side information code when an audio packet is correctly received, a side information accumulation unit that accumulates side information obtained by decoding a side information code, an audio parameter missing processing unit that outputs an audio parameter upon detection of audio packet loss, and an audio synthesis unit that synthesizes decoded audio from the audio parameter.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: January 30, 2018
    Assignee: NTT DoCoMo, Inc.
    Inventors: Kimitaka Tsutsumi, Kei Kikuiri, Atsushi Yamaguchi
  • Patent number: 9853659
    Abstract: The invention relates to an encoder and a decoder and methods therein for supporting split gain shape vector encoding and decoding. The method performed by an encoder, where the encoding of each vector segment is subjected to a constraint related to a maximum number of bits, BMAX, allowed for encoding a vector segment. The method comprises, determining an initial number, Np_init, of segments for a target vector x; and further determining an average number of bits per segment, BAVG, based on a vector bit budget and Np_init. The method further comprises determining a final number of segments to be used, for the vector x, in the gain shape vector encoding, based on energies of the Np_init segments and a difference between BMAX and BAVG. The performing of the method enables an efficient allocation of the bits of the bit budget over the target vector.
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: December 26, 2017
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Erik Norvell, Volodya Grancharov, Tomas Jansson Toftgård
  • Patent number: 9800453
    Abstract: A method and apparatus for providing signal processing coefficients for processing an input signal at a predetermined signal processing sampling rate, wherein the input signal is received at an input signal sampling rate, the method comprising the steps of computing a correlation or covariance function based on the received input signal at the input signal sampling rate to provide correlation or covariance coefficients at the input signal sampling rate, re-sampling the computed correlation or covariance coefficients having the input signal sampling rate to provide correlation or covariance coefficients at the predetermined signal processing sampling rate, and calculating the signal processing coefficients based on the correlation or covariance coefficients at the predetermined signal processing sampling rate.
    Type: Grant
    Filed: August 1, 2013
    Date of Patent: October 24, 2017
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Anisse Taleb, Jianfeng Xu, David Virette
  • Patent number: 9779737
    Abstract: A better compromise between a too high bitstream and decoding overhead on the one hand and flexibility of frame element positioning on the other hand is achieved by arranging that each of the sequence of frames of the bitstream has a sequence of N frame elements and, on the other hand, the bitstream has a configuration block having a field indicating the number of elements N and a type indication syntax portion indicating, for each element position of the sequence of N element positions, an element type out of a plurality of element types with, in the sequences of N frame elements of the frames, each frame element being of the element type indicated, by the type indication portion, for the respective element position at which the respective frame element is positioned within the sequence of N frame elements of the respective frame in the bitstream.
    Type: Grant
    Filed: September 17, 2013
    Date of Patent: October 3, 2017
    Assignees: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V., DOLBY INTERNATIONAL AB, KONINKLIJKE PHILIPS N.V.
    Inventors: Max Neuendorf, Markus Multrus, Stefan Doehla, Heiko Purnhagen, Frans De Bont
  • Patent number: 9734837
    Abstract: A method, medium, and system scalably encoding/decoding audio/speech. The method includes splitting an input signal into a low frequency band signal that is lower than a predetermined frequency and a high frequency band signal that is higher than the predetermined frequency, scalably encoding the split low frequency band signal into a core layer and one or more extension layers and then decoding the encoded core layer and the encoded extension layers, generating an error signal by using the split low frequency band signal and a decoded signal of the encoded core layer and the encoded extension layers, and encoding the error signal and the high frequency band signal into a signal-to-noise ratio (SNR) enhancement layer and a bandwidth extension layer.
    Type: Grant
    Filed: October 5, 2012
    Date of Patent: August 15, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Eun-mi Oh, Ho-sang Sung, Ki-hyun Choo, Kang-eun Lee
  • Patent number: 9724016
    Abstract: Respiratory rate can be calculated from an acoustic input signal using time domain and frequency domain techniques. Confidence in the calculated respiratory rate can also be calculated using time domain and frequency domain techniques. Overall respiratory rate and confidence values can be obtained from the time and frequency domain calculations. The overall respiratory rate and confidence values can be output for presentation to a clinician.
    Type: Grant
    Filed: October 15, 2010
    Date of Patent: August 8, 2017
    Assignee: MASIMO CORP.
    Inventors: Ammar Al-Ali, Walter M. Weber, Anmol B. Majmudar, Gilberto Sierra, Sung Uk Lee, Mohamed Diab, Valery G. Telfort, Marc Pelletier, Boris Popov
  • Patent number: 9715880
    Abstract: The present document relates to audio coding systems. In particular, the present document relates to efficient methods and systems for parametric multi-channel audio coding. An audio encoding system (500) configured to generate a bitstream (564) indicative of a downmix signal and spatial metadata for generating a multi-channel upmix signal from the downmix signal is described. The system (500) comprises a downmix processing unit (510) configured to generate the downmix signal from a multi-channel input signal (561); wherein the downmix signal comprises m channels and wherein the multi-channel input signal (561) comprises n channels; n, m being integers with m<n. Furthermore, the system (500) comprises a parameter processing unit (520) configured to determine the spatial metadata from the multi-channel input signal (561).
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: July 25, 2017
    Assignee: Dolby International AB
    Inventors: Tobias Friedrich, Alexander Mueller, Karsten Linzmeier, Claus-Christian Spenger, Tobias R. Wagenblass
  • Patent number: 9641158
    Abstract: Systems, apparatuses, and methods for implementing a low power decimator. A decimator may receive a plurality of input samples from a digital microphone. The decimator may include one or more coefficient tables for storing values combining two or more filter coefficients for filtering the received samples. The decimator may utilize a concatenation of multiple samples to perform a lookup of a corresponding coefficient table. The coefficient tables may store only the necessary non-redundant values for all coefficient combinations which can be applied to the multiple samples. The result of the lookup of the coefficient table may have its sign inverted or be zeroed based on the values of the multiple samples.
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: May 2, 2017
    Assignee: Apple Inc.
    Inventors: Tzach Zemer, Joseph J. Cheng
  • Patent number: 9626972
    Abstract: A method and device for decoding a signal. The method for decoding a signal includes: obtaining spectral coefficients of sub-bands from a received bitstream by means of decoding; classifying sub-bands in which the spectral coefficients are located into a sub-band with saturated bit allocation and a sub-band with unsaturated bit allocation; performing noise filling on a spectral coefficient that has not been obtained by means of decoding and is in the sub-band with unsaturated bit allocation, so as to restore the spectral coefficient that has not been obtained by means of decoding; and obtaining a frequency domain signal according to the spectral coefficients obtained by means of decoding and the restored spectral coefficient. Therefore, a sub-band with unsaturated bit allocation in a frequency domain signal may be obtained by classification, thereby improving signal decoding quality.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: April 18, 2017
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Zexin Liu, Fengyan Qi, Lei Miao
  • Patent number: 9626973
    Abstract: The invention provides a highly efficient technique for encoding a multi-channel audio signal. The invention relies on the basic principle of encoding a first signal representation of one or more of the multiple channels in a first encoder and encoding a second signal representation of one or more of the multiple channels in a second, multi-stage, encoder. This procedure is significantly enhanced by providing a controller for adaptively allocating a number of encoding bits among the different encoding stages of the second, multi-stage, encoder in dependence on multi-channel audio signal characteristics.
    Type: Grant
    Filed: December 22, 2005
    Date of Patent: April 18, 2017
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Anisse Taleb, Stefan Andersson
  • Patent number: 9589574
    Abstract: Personal audio systems and methods are disclosed. A personal audio system includes a voice activity detector to determine whether or not an ambient audio stream contains voice activity, a pitch estimator to determine a frequency of a fundamental component of an annoyance noise contained in the ambient audio stream, and a filter bank to attenuate the fundamental component and at least one harmonic component of the annoyance noise to generate a personal audio stream. The filter bank implements a first filter function when the ambient audio stream does not contain voice activity, or a second filter function when the ambient audio stream contains voice activity.
    Type: Grant
    Filed: November 13, 2015
    Date of Patent: March 7, 2017
    Assignee: Doppler Labs, Inc.
    Inventors: Gints Klimanis, Anthony Parks
  • Patent number: 9584158
    Abstract: A quasi-cyclic LDPC encoding apparatus is disclosed wherein a matrix H of the form [0 T; D E] is used, where T is a triangular matrix and D and E are arbitrary matrices selected to improve encoding performance. T and E vary with the size of an encoded data word whereas D is maintained constant. T and E are sparse such that encoding operations performed on them are computationally simple. Likewise D and its inverse are constant and pre-computed further reducing computation. T, E, and D and the inverse of D may be constrained to be quasi-cyclic, which reduces storage required to represent them and enables the performance of encoding operations using shift registers.
    Type: Grant
    Filed: July 24, 2015
    Date of Patent: February 28, 2017
    Assignee: Tidal Systems, Inc.
    Inventor: Yingquan Wu
  • Patent number: 9583112
    Abstract: The present invention relates to a signal processing apparatus and a signal processing method, an encoder and an encoding method, a decoder and a decoding method, and a program capable of reproducing music signal having a better sound quality by expansion of frequency band. A sampling frequency conversion unit converts a sampling frequency of an input signal, and a sub-band division circuit divides the input signal after the sampling conversion into sub-band signals of sub-bands having the number corresponding to the sampling frequency. A pseudo high band sub-band power calculation circuit calculates pseudo high band sub-band powers based on low band signals of the input signal and coefficient tables having coefficients for the respective high band sub-bands. A pseudo high band sub-band power difference calculation circuit compares high band sub-band powers and the pseudo high band sub-band powers to each other and selects a coefficient table from plural coefficient tables.
    Type: Grant
    Filed: April 11, 2011
    Date of Patent: February 28, 2017
    Assignee: Sony Corporation
    Inventors: Yuki Yamamoto, Toru Chinen, Hiroyuki Honma, Yuhki Mitsufuji
  • Patent number: 9548061
    Abstract: The present document relates to methods and systems for audio encoding. In particular, the present document relates to methods and systems for fast audio encoding using a parallel system architecture. A frame-based audio encoder (300, 400, 500, 600) comprising K parallel transform units (303, 403) is described; wherein each of the K parallel transform units (303, 403) is configured to transform a respective one of a group of K frames (305) of an audio signal (101) into a respective one of K sets of frequency coefficients; wherein K>1; wherein each of the K frames (305) comprises a plurality of samples of the audio signal (101).
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: January 17, 2017
    Assignee: Dolby International AB
    Inventor: Wolfgang Schildbach
  • Patent number: 9548909
    Abstract: There is provided a communication device including a network interface connected to a network, a packet collection unit configured to collect packets transmitted from the network interface and packets received by the network interface, a packet recording unit configured to select a packet to be recorded from the packets collected by the packet collection unit and to record the packet as recorded information, and a packet analysis unit configured to detect discontinuity of a packet ID of the packets collected by the packet collection unit. When the packet analysis unit detects discontinuity of a packet ID, the packet recording unit retains the recorded information that has been recorded.
    Type: Grant
    Filed: November 20, 2014
    Date of Patent: January 17, 2017
    Assignee: SONY CORPORATION
    Inventor: Osamu Matsunaga
  • Patent number: 9516407
    Abstract: A personal listening system has an active noise control (ANC) controller that produces an anti-noise signal. A head worn audio device for a user has a speaker to convert the anti-noise signal into anti-noise, an error microphone, and a reference microphone. The controller uses signals from the error and reference microphones to produce the anti-noise signal in accordance with an adaptive filter algorithm that has an adjustable parameter which changes so as to move the point at which acoustic cancellation occurs from the error microphone and closer to the user's eardrum. Other embodiments are also described and claimed.
    Type: Grant
    Filed: August 13, 2013
    Date of Patent: December 6, 2016
    Assignee: Apple Inc.
    Inventors: Andre L. Goldstein, Yacine Azmi, Esge B. Andersen
  • Patent number: 9508356
    Abstract: An encoding device is provided for improving decoded signal quality. A local search unit conducts a local search on a plurality of sub-bands generated by dividing spectrum data, and calculates lattice vectors for the spectra in the plurality of sub-bands. A multi-rate indexing unit uses the lattice vectors to perform multi-rate indexing on each of the sub-bands, and generates indexing information showing the results thereof. A band selection unit determines certain sub-bands from amongst the plurality of sub-bands in a plurality of encoding layers as perceptually important sub-band groups, where these are: within a selection range of sub-bands wherein the total number of encoding bits allocated to each of the plurality of sub-bands in the indexing information is equal to or less than an already set value, and within a sub-band selection range with the highest total energy of each of the plurality of sub-bands.
    Type: Grant
    Filed: April 1, 2011
    Date of Patent: November 29, 2016
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Tomofumi Yamanashi, Masahiro Oshikiri
  • Patent number: 9495968
    Abstract: In general, techniques are described for obtaining an indication of whether spherical harmonic coefficients are representative of a synthetic audio object. In accordance with the techniques, a device comprising one or more processors may be configured to obtain an indication of whether spherical harmonic coefficients representative of a sound field are generated from a synthetic audio object.
    Type: Grant
    Filed: May 28, 2014
    Date of Patent: November 15, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Dipanjan Sen, Martin James Morrell, Nils Günther Peters
  • Patent number: 9489960
    Abstract: A bit allocating method is provided that includes determining the allocated number of bits in decimal point units based on each frequency band so that a Signal-to-Noise Ratio (SNR) of a spectrum existing in a predetermined frequency band is maximized within a range of the allowable number of bits for a given frame; and adjusting the allocated number of bits based on each frequency band.
    Type: Grant
    Filed: October 9, 2015
    Date of Patent: November 8, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Mi-young Kim, Anton Victorovich Porov, Eun-mi Oh
  • Patent number: 9477549
    Abstract: Methods, systems, and computer readable media for address and data integrity checking in flash memory operations are disclosed. One method includes, at a storage controller, generating, for an address unit, an address parity unit. The method further includes generating a command sequence including the address unit, the address parity unit, and an operation command specifying an operation to be performed on a flash memory array. The method further includes providing the command sequence to a flash memory device that includes the non-volatile memory array. The method further includes performing, by the flash memory device, an address integrity check on the address unit using the address parity unit. The method further includes determining whether or not to perform an operation specified by the command sequence based at least in part on a result of the address integrity check.
    Type: Grant
    Filed: September 15, 2014
    Date of Patent: October 25, 2016
    Assignee: SanDisk Technologies LLC
    Inventors: Ashutosh Malshe, Karthik Krishnamoorthy
  • Patent number: 9437204
    Abstract: An encoder (20) for encoding frequency transform coefficients (Y(k)) of a harmonic audio signal include the following elements: A peak locator (22) configured to locate spectral peaks having magnitudes exceeding a predetermined frequency dependent threshold. A peak region encoder (24) configured to encode peak regions including and surrounding the located peaks. A low-frequency set encoder (26) configured to encode at least one low-frequency set of coefficients outside the peak regions and below a crossover frequency that depends on the number of bits used to encode the peak regions. A noise-floor gain encoder (28) configured to encode a noise-floor gain of at least one high-frequency set of not yet encoded coefficients outside the peak regions.
    Type: Grant
    Filed: October 30, 2012
    Date of Patent: September 6, 2016
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Volodya Grancharov, Tomas Jansson Toftgård, Sebastian Näslund, Harald Pobloth
  • Patent number: 9418670
    Abstract: An encoding apparatus includes a noise detector configured to detect noise included in a certain band in accordance with an audio signal, a gain controller configured to perform gain control on the audio signal so that components in the certain band of the audio signal are attenuated when the noise is detected by the noise detector, a bit allocation calculation unit configured to calculate the numbers of bits to be allocated to frequency spectra of the audio signal which have been subjected to the gain control performed by the gain controller in accordance with the frequency spectra, and a quantization unit configured to quantize the frequency spectra of the audio signal which have been subjected to the gain control in accordance with the numbers of the bits.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: August 16, 2016
    Assignee: Sony Corporation
    Inventors: Yuuki Matsumura, Shiro Suzuki
  • Patent number: 9385750
    Abstract: The invention relates to an encoder and a decoder and methods therein for supporting split gain shape vector encoding and decoding. The method performed by an encoder, where the encoding of each vector segment is subjected to a constraint related to a maximum number of bits, BMAX, allowed for encoding a vector segment. The method comprises, determining an initial number, Np—init, of segments for a target vector x; and further determining an average number of bits per segment, BAVG, based on a vector bit budget and Np—init. The method further comprises determining a final number of segments to be used, for the vector x, in the gain shape vector encoding, based on energies of the Np—init segments and a difference between BMAX and BAVG. The performing of the method enables an efficient allocation of the bits of the bit budget over the target vector.
    Type: Grant
    Filed: November 11, 2014
    Date of Patent: July 5, 2016
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Erik Norvell, Volodya Grancharov, Tomas Jansson Toftgård
  • Patent number: 9380641
    Abstract: A mobile station is disclosed for processing differing radio standards such as GSM/GPRS/EDGE and TD-SCDMA. The mobile station includes a channel decoding unit and a coding unit. The signals of both radio standards are processed both with the coding unit and with the channel decoding unit. The coding unit and the channel decoding unit are arranged in the baseband chip of the mobile station. The TD-SCDMA-specific algorithms can be generated by means of a coprocessor that is electrically connected to the baseband chip or integrated in the baseband chip.
    Type: Grant
    Filed: November 18, 2004
    Date of Patent: June 28, 2016
    Assignee: Intel Deutschland GmbH
    Inventors: Robert Denk, Bertram Gunzelmann, Xiaofeng Wu
  • Patent number: 9317477
    Abstract: A computer program product corrects a detonation time from a ballistic table, based on the actual velocity of a projectile measured upon exit of the projectile from the gun tube. The computer program product transfers a 16-bit data stream, through a 16-bit to an 8-bit encoder, to a fuze controller implemented as an 8-bit platform, to provide precise timing adjustment to a fuze controller. The computer program product significantly improves the accuracy of detonation times for air burst mode. The encoder calculates the absolute truncated, square rooted, X, of the input time delay number, as well as the error correction number, Y. The encoder then transmits both numbers X and Y as an 8-bit data stream, optionally along with the parity data to the fuze controller.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: April 19, 2016
    Assignee: The United States of America as Represented by the Secretary of the Army
    Inventors: Lloyd D. Khuc, Barry Schwartz, Jason Cahayla, Triet La, Robert P. Bryan, John Geaney, Olivier Nguyen
  • Patent number: 9317458
    Abstract: A device for processing a signal includes a processing module used to process data in a domain. The device includes domain conversion hardware and memory, both separate from the processing module. The memory receives and sends data represented in a first domain to the domain conversion hardware. The domain conversion hardware converts the first domain data into the second domain data that may be used or processed by the processing module. The second domain data is then accessed and used by the processing module for processing.
    Type: Grant
    Filed: April 16, 2012
    Date of Patent: April 19, 2016
    Assignee: Harman International Industries, Incorporated
    Inventors: Kirk I. Bushen, Gilbert Arthur Joseph Soulodre
  • Patent number: 9319790
    Abstract: Frequency response correction systems and methods for consumer electronic (CE) devices are disclosed. Applying one or more of disclosed techniques can improve a consumer's listening experience. The frequency response of a CE device can be corrected to remove or attenuate salient, undesirable features of with minimal user interaction. Audio quality can be tuned for optimal or near optimal performance even at maximum or near maximum volume levels substantially without fluctuations, clipping, or any other distortions. In some embodiments, audio response of the CE device can be captured, smoothed, and corrected. Correction parameters can be stored on the CE device.
    Type: Grant
    Filed: December 26, 2012
    Date of Patent: April 19, 2016
    Assignee: DTS LLC
    Inventors: Doug Morton, James Tracey, Alexandra Schoepel
  • Patent number: 9275638
    Abstract: An electronic device digitally combines a single voice input with each of a series of noise samples. Each noise sample is taken from a different audio environment (e.g., street noise, babble, interior car noise). The voice input/noise sample combinations are used to train a voice recognition model database without the user having to repeat the voice input in each of the different environments. In one variation, the electronic device transmits the user's voice input to a server that maintains and trains the voice recognition model database.
    Type: Grant
    Filed: December 3, 2013
    Date of Patent: March 1, 2016
    Assignee: Google Technology Holdings LLC
    Inventors: John R Meloney, Joel A Clark, Joseph C Dwyer, Adrian M Schuster, Snehitha Singaraju, Robert A Zurek
  • Patent number: 9263050
    Abstract: A method is provided for allocating bits for quantifying spatial information parameters by frequency sub-band for parametric encoding/decoding of a multichannel audio stream representative of a soundstage consisting of a plurality of sound sources. The method includes a step of quantifying or inversely quantifying, by frequency sub-band, spatial information parameters for the sound sources of the soundscape. The method further includes: assessing a spatial resolution of the current sub-band on the basis of the spectral properties of the sub-band; and determining a number of bits to be allocated to the current sub-band, the number of bits to be allocated being inversely proportional to the estimated spatial resolution. Also provided is a device for allocating quantification bits implementing the above-described method.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: February 16, 2016
    Assignee: ORANGE
    Inventors: Adrien Daniel, Rozenn Nicol
  • Patent number: 9251799
    Abstract: A method and an apparatus for encoding and decoding audio signals using adaptive sinusoidal coding are provided. The audio signal encoding method includes the steps of dividing a synthesized audio signal into a plurality of sub-bands, calculating the energy of each sub-band, selecting a predetermined number of sub-bands having a relatively large amount of energy from the sub-bands, and performing sinusoidal coding with regard to the selected sub-bands. Application of sinusoidal coding based on consideration of the amount of energy of each sub-band of the synthesized signal improves the quality of the synthesized signal more efficiently.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: February 2, 2016
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Mi-Suk Lee, Hyun-Joo Bae, Byung-Sun Lee
  • Patent number: 9236063
    Abstract: A method of bit allocation is described. The method includes, for each among a plurality of vectors, calculating a corresponding one of a plurality of gain factors. The method also includes, for each among the plurality of vectors, calculating a corresponding bit allocation that is based on the gain factor. The method further includes, for at least one among the plurality of vectors, determining that the corresponding bit allocation is not greater than a minimum allocation value. The method additionally includes, in response to the determining, for each of the at least one vector, changing the corresponding bit allocation.
    Type: Grant
    Filed: July 28, 2011
    Date of Patent: January 12, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Ethan Robert Duni, Venkatesh Krishnan, Vivek Rajendran
  • Patent number: 9208792
    Abstract: A method of processing an audio signal is described. The method includes selecting one among a plurality of entries of a codebook based on information from the audio signal. The method also includes determining locations, in a frequency domain, of zero-valued elements of a first signal that is based on the selected codebook entry. The method further includes calculating energy of the audio signal at the determined frequency-domain locations. The method additionally includes calculating a value of a measure of a distribution of the energy of the audio signal among the determined frequency-domain locations. The method also includes calculating a noise injection gain factor based on the calculated energy and the calculated value.
    Type: Grant
    Filed: August 16, 2011
    Date of Patent: December 8, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Vivek Rajendran, Ethan Robert Duni, Venkatesh Krishnan
  • Patent number: 9197232
    Abstract: Systems and methods presented herein provide for analog to digital conversion with variable bit resolution. In one embodiment, a system includes a processor and a multiplexer. The processor is operable to receive an analog signal, to detect power spectral densities in the analog signal, to segment the analog signal into at least two frequency bands, to sample each of the frequency bands, and to quantize each of the sampled frequency bands with bit resolutions according to detected power spectral densities of the frequency bands. The multiplexer is operable to multiplex the quantized frequency bands into a data stream.
    Type: Grant
    Filed: May 22, 2014
    Date of Patent: November 24, 2015
    Assignee: CABLE TELEVISION LABORATORIES, INC.
    Inventor: Belal Hamzeh
  • Patent number: 9128875
    Abstract: A signal transformation apparatus, a signal transformation method, and a recording medium are provided. The signal transformation apparatus selects any one of DCT-II, DST-II, DFT, and HWT, and transforms and outputs the input signal according to the selected transform. Therefore, the hybrid architecture of low complexity can be attained.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: September 8, 2015
    Assignee: Industrial Cooperation Foundation Chonbuk National University
    Inventors: Moon Ho Lee, Danping Xu