Psychoacoustic Patents (Class 704/200.1)
  • Patent number: 11289108
    Abstract: An encoder operable to filter audio signals into a plurality of frequency band components, generate quantized digital components for each band, identify a potential for pre-echo events within the generated quantized digital components, generate an approximate signal by decoding the quantized digital components using inverse pulse code modulation, generate an error signal by comparing the approximate signal with the sampled audio signal, and process the error signal and quantized digital components. The encoder operable to process the error signal by processing delayed audio signals and Q band values, determining the potential for pre-echo events from the Q band values, and determining scale factors and MDCT block sizes for the potential for pre-echo events.
    Type: Grant
    Filed: December 7, 2020
    Date of Patent: March 29, 2022
    Assignee: IMMERSION NETWORKS, INC.
    Inventors: James David Johnston, Stephen Daniel White, King Wei Hor, Barry M. Genova
  • Patent number: 11289102
    Abstract: Present disclosure provide an audio signal encoding method and communication terminal, which relate to the communications field. The method and communication terminal are used to obtain an analog audio signal and encoding the analog audio signal to obtain a bitstream representing the analog audio signal, in which a proper bit allocation for spectral coefficients can be performed.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: March 29, 2022
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Zexin Liu, Bin Wang, Lei Miao
  • Patent number: 11223910
    Abstract: A method, including the actions of obtaining data based on a current and/or anticipated future wearing implementation of a hearing prosthesis, and adjusting a parameter of the hearing prosthesis based on the current or anticipated future wearing implementation of the hearing prosthesis, and evoking a hearing percept using the hearing prosthesis with the adjusted parameter.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: January 11, 2022
    Assignee: Cochlear Limited
    Inventors: Martin Evert Gustaf Hillbratt, Kristian Gunnar Asnes
  • Patent number: 11172319
    Abstract: A system and method for volumetric sounds generation. The method includes: generating multiple sounds beams from a plurality of microphones within a three-dimensional space; capturing multiple sound signals generated by multiple sounds sources located within the three-dimensional space, where the multiple sound signals are captured based on the multiple sound beams; and, generating a pattern for each of the multiple sound sources.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: November 9, 2021
    Assignee: Insoundz Ltd.
    Inventors: Tomer Goshen, Emil Winebrand, Tzahi Zilbershtein
  • Patent number: 11153682
    Abstract: An audio output system for providing an output signal to a micro-speaker provides energy reduction and thermal protection by removing components of an input signal from which the output signal is generated, so that the audio power output system does not expend power reproducing portions of the audio information that would not be perceived by a listener. The micro-speaker has a resonant frequency such that substantial content of the audio information lies below the resonant frequency. A processing subsystem receives the audio information and generates the output signal by filtering the audio information with a response simulating the micro-speaker and an acoustic path to the listener, and comparing the filtered audio information with a frequency-dependent threshold of hearing. The processing subsystem then removes portions of the audio information that have an amplitude below the frequency-dependent threshold of hearing.
    Type: Grant
    Filed: September 18, 2020
    Date of Patent: October 19, 2021
    Assignee: CIRRUS LOGIC, INC.
    Inventors: Ning Li, George E. Hardy, Kaichow Lau, Anthony S. Doy, Ziyan Zou, John L. Melanson
  • Patent number: 11146338
    Abstract: Methods, systems, and devices for a decision directed multi-modulus searching algorithm are described. A receiver may receive an optical signal including a set of data symbols. The receiver may iteratively determine a set of centroids for demodulating the set of data symbols (e.g., as part of a training procedure). The centroids may be used to demodulate the set of data symbols according to a modulation constellation associated with the set of data symbols. The training procedure may include, for each data symbol of a subset of data symbols, assigning a centroid of the set of centroids to each data symbol and updating the set of centroids based on assigning the centroid to each data symbol. The receiver may demodulate the set of data symbols based on the updated set of centroids.
    Type: Grant
    Filed: July 12, 2019
    Date of Patent: October 12, 2021
    Assignee: Cable Television Laboratories, Inc.
    Inventors: Mu Xu, Zhensheng Jia
  • Patent number: 11107486
    Abstract: The present disclosure provides a speech/audio signal processing method based on wideband switching and a coding apparatus. The method includes: if a first wideband speech/audio signal is a harmonic signal, adjusting a determining condition for determining that a second wideband speech/audio signal is a harmonic signal, to obtain a first determining condition, where the first wideband speech/audio signal is a signal before wideband switching, and the second wideband speech/audio signal is a signal after the wideband switching; and determining, according to the first determining condition, whether the second wideband speech/audio signal is a harmonic signal. In the case of wideband switching, signal types of speech/audio signals remain as consistent as possible before and after the switching, so that continuity of the speech/audio signal decoded by a decoder device is ensured as much as possible, further improving speech communication service quality.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: August 31, 2021
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Chen Hu, Zexin Liu, Lei Miao
  • Patent number: 11081118
    Abstract: Methods for generating an object based audio program which is renderable in a personalizable manner, e.g., to provide an immersive, perception of audio content of the program. Other embodiments include steps of delivering (e.g., broadcasting), decoding, and/or rendering such a program. Rendering of audio objects indicated by the program may provide an immersive experience. The audio content of the program may be indicative of multiple object channels (e.g., object channels indicative of user-selectable and user-configurable objects, and typically also a default set of objects which will be rendered in the absence of a selection by a user) and a bed of speaker channels. Another aspect is an audio processing unit (e.g., encoder or decoder) configured to perform, or which includes a buffer memory which stores at least one frame (or other segment) of an object based audio program (or bitstream thereof) generated in accordance with, any embodiment of the method.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: August 3, 2021
    Assignees: Dolby Laboratories Licensing Corporation, Dolby International AB
    Inventors: Robert Andrew France, Thomas Ziegler, Sripal S. Mehta, Andrew Jonathan Dowell, Prinyar Saungsomboon, Michael David Dwyer, Farhad Farahani, Nicolas R. Tsingos, Freddie Sanchez
  • Patent number: 11030524
    Abstract: There is provided an information processing device to reduce a processing load associated with inner product operations while also guaranteeing the quantization granularity of weight coefficients, the information processing device including: a computational unit configured to compute an output value by performing an inner product operation based on multiple input values and multiple weight coefficients corresponding to each of the input values. The computational unit computes the output value on the basis of the weight coefficients quantized on the basis of a granularity of a vector direction on an N-dimensional hypersphere surface. Moreover, provided is an information processing device including: a multiply-accumulate operation circuit configured to execute a multiply-accumulate operation based on multiple input values and multiple weight coefficients corresponding to each of the input values.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: June 8, 2021
    Assignee: SONY CORPORATION
    Inventors: Toshiyuki Hiroi, Makiko Yamamoto, Akira Nakamura
  • Patent number: 11011184
    Abstract: The technology disclosed herein may determine timing windows for speech captions of an audio stream. In one example, the technology may involve accessing audio data comprising a plurality of segments; determining, by a processing device, that one or more of the plurality of segments comprise speech sounds; identifying a time duration for the speech sounds; and providing a user interface element corresponding to the time duration for the speech sounds, wherein the user interface element indicates an estimate of a beginning and ending of the speech sounds and is configured to receive caption text associated with the speech sounds of the audio data.
    Type: Grant
    Filed: November 15, 2019
    Date of Patent: May 18, 2021
    Assignee: Google LLC
    Inventors: Sourish Chaudhuri, Nebojsa Ciric, Khiem Pham
  • Patent number: 10984809
    Abstract: A frequency-domain audio codec is provided with the ability to additionally support a certain transform length in a backward-compatible manner, by the following: the frequency-domain coefficients of a respective frame are transmitted in an interleaved manner irrespective of the signalization signaling for the frames as to which transform length actually applies, and additionally the frequency-domain coefficient extraction and the scale factor extraction operate independent from the signalization. By this measure, old-fashioned frequency-domain audio coders/decoders, insensitive for the signalization, would be able to nevertheless operate without faults and with reproducing a reasonable quality. Concurrently, frequency-domain audio coders/decoders able to support the additional transform length would offer even better quality despite the backward compatibility.
    Type: Grant
    Filed: February 25, 2019
    Date of Patent: April 20, 2021
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Sascha Dick, Christian Helmrich, Andreas Hoelzer
  • Patent number: 10978082
    Abstract: An audio processor for processing an audio signal to acquire a subband representation thereof includes a cascaded lapped critically sampled transform stage and a time domain aliasing reduction stage, the former being configured to perform a cascaded lapped critically sampled transform on at least two partially overlapping blocks of samples of the audio signal, to acquire a set of subband samples on the basis of a first block of samples of the audio signal, and to acquire a corresponding set of subband samples on the basis of a second block of samples of the audio signal. The latter is configured to perform a weighted combination of two corresponding sets of subband samples, which are acquired on the basis of the first and second blocks of samples of the audio signal, respectively, to acquire an aliasing reduced subband representation of the audio signal.
    Type: Grant
    Filed: January 18, 2019
    Date of Patent: April 13, 2021
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Nils Werner, Bernd Edler
  • Patent number: 10951234
    Abstract: In one implementation, the disclosure provides a system including a detector configured to generate an output of a first log-likelihood ratio for each bit in an input data stream. The system also includes at least one look-up table providing a mapping of the first log-likelihood ratio to a second log-likelihood ratio. The mapping between the first log-likelihood ratio and the second log-likelihood ratio is non-linear. The system also includes a decoder configured to generate an output data stream using the second log-likelihood ratio to generate a value for each bit in the input data stream.
    Type: Grant
    Filed: January 10, 2019
    Date of Patent: March 16, 2021
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Deepak Sridhara, Rishi Ahuja, William M. Radich, Ara Patapoutian
  • Patent number: 10930318
    Abstract: Techniques of playing back a looping video file involve providing multiple video codecs for decoding a video file. Each video codec performs its own decoding operation on the looping video file, resulting in multiple buffers of video frames and a buffer of audio frames. Then, as the GPU renders the ending video frames from a first buffer, it begins rendering the beginning video frames from a second buffer. In this way, the beginning of a next video cycle is already rendered for viewing by the time a current video cycle is ending.
    Type: Grant
    Filed: July 15, 2019
    Date of Patent: February 23, 2021
    Assignee: Twitter, Inc.
    Inventors: Zhong Sheng Wang, Ryan Matthew Gordon
  • Patent number: 10902862
    Abstract: A method for encoding a high frequency signal includes determining a signal type of a high frequency signal of a current frame, smoothing and scaling time envelopes of the high frequency signal of the current frame and obtaining time envelopes of the high frequency signal of the current frame that require to be encoded when the high frequency signal of the current frame is a non-transient signal and a high frequency signal of the previous frame is a transient signal, and quantizing and encoding the time envelopes of the high frequency signal of the current frame that require to be encoded, and frequency information and signal type information of the high frequency signal of the current frame.
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: January 26, 2021
    Assignee: Crystal Clear Codec, LLC
    Inventors: Zexin Liu, Lei Miao, Anisse Taleb
  • Patent number: 10863287
    Abstract: Scene and/or state information may be used to facilitate processing an input to separate one or more signals within the input, to shape the signal within the input, and/or for other processing of the input or signal(s) within the input. A scene determination may be made based upon location data, time data, data describing the received input, or other basis. A state determination may be made based upon the scene determination, properties of a signal itself, or other information such as location, time, etc. By determining an appropriate scene and/or state, processing of an input and/or a signal within an input may proceed in a fashion determined to provide the most valuable information for output. Systems and methods in accordance with the invention may be implemented in a wide variety of baseband processing systems, such as hearing aids and energy consumption monitoring systems.
    Type: Grant
    Filed: March 12, 2018
    Date of Patent: December 8, 2020
    Assignee: Alarm.com Incorporated
    Inventors: Jerald Frederic Johnson, Marc Anthony Epard, Curtis Scott Crawford, Ronald Byron Kabler, Alain Charles Briançon, Christopher Allen Giacoponello, Victor Andres Jara-Olivares, Robert Leon Lutes, John Berns Lancaster
  • Patent number: 10847166
    Abstract: A coding efficiency of coding spectral coefficients of a spectrum of an audio signal is increased by en/decoding a currently to be en/decoded spectral coefficient by entropy en/decoding and, in doing so, performing the entropy en/decoding depending, in a context-adaptive manner, on a previously en/decoded spectral coefficient, while adjusting a relative spectral distance between the previously en/decoded spectral coefficient and the currently en/decoded spectral coefficient depending on an information concerning a shape of the spectrum.
    Type: Grant
    Filed: October 10, 2018
    Date of Patent: November 24, 2020
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Guillaume Fuchs, Matthias Neusinger, Markus Multrus, Stefan Doehla
  • Patent number: 10841030
    Abstract: In some aspects, the disclosure is directed to methods and systems for improving signal to noise ratios of signals from multiple communication links. In some embodiments, a system includes a first frequency transformation circuit configured to transform a first signal in a time domain received from a first device into a corresponding second signal in a frequency domain. The system further includes a second frequency transformation circuit configured to transform a third signal in the time domain received from a second device into a corresponding fourth signal in the frequency domain. The system further includes a leg combining circuit configured to select, for a group of subcarriers, one of the first frequency transformation circuit and the second frequency transformation circuit, and cause, for the group of subcarriers, the selected frequency transformation circuit to output one of the second signal and the fourth signal, according to the selection.
    Type: Grant
    Filed: July 30, 2018
    Date of Patent: November 17, 2020
    Assignee: Avago Technologies International Sales Pte. Limited
    Inventors: Avi Kliger, Anatoli Shindler, Giuseppe Cusmai, Eliran Hania, Steven Jaffe
  • Patent number: 10804932
    Abstract: In one implementation, the disclosure provides a system including a detector configured to generate an output of a first log-likelihood ratio for each bit in an input data stream. The system also includes at least one look-up table providing a mapping of the first log-likelihood ratio to a second log-likelihood ratio. The mapping between the first log-likelihood ratio and the second log-likelihood ratio is non-linear. The system also includes a decoder configured to generate an output data stream using the second log-likelihood ratio to generate a value for each bit in the input data stream.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: October 13, 2020
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Deepak Sridhara, Rishi Ahuja, William M. Radich, Ara Patapoutian
  • Patent number: 10789971
    Abstract: A method, device, system and kit for preventing the intelligible voice recording Is provided. The voice of a subject or Interlocutor Is recorded for a given time Interval thereby providing a voice recording. The voice recording Is cut Into shorter time interval segments thereby providing a set of voice recording segments. The set of voice recording segments is mixed in a randomly rearranged order, The mixed set of voice recording segments is spliced into a single randomly mixed voice recording. Emitting the randomly mixed voice recording during speaking of the subject or interlocutor prevents the Intelligible recording of the voice of the subject or interlocutor.
    Type: Grant
    Filed: May 5, 2017
    Date of Patent: September 29, 2020
    Assignee: SECURITE SPYTRONIC INC.
    Inventor: Alexandre Santos
  • Patent number: 10789963
    Abstract: The invention provides a decoder being configured for processing an encoded audio bitstream, wherein the decoder includes: a bitstream decoder configured to derive a decoded audio signal from the bitstream, wherein the decoded audio signal includes at least one decoded frame; a noise estimation device configured to produce a noise estimation signal containing an estimation of the level and/or the spectral shape of a noise in the decoded audio signal; a comfort noise generating device configured to derive a comfort noise signal from the noise estimation signal; and a combiner configured to combine the decoded frame of the decoded audio signal and the comfort noise signal in order to obtain an audio output signal.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: September 29, 2020
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Guillaume Fuchs, Anthony Lombard, Emmanuel Ravelli, Stefan Doehla, Jérémie Lecomte, Martin Dietz
  • Patent number: 10778990
    Abstract: An embedded codec (EBC) circuitry includes encoder circuitry to determine a refinement start position in a bit-plane of an encoded data block based on a random number. The refinement start position is a position in the bit-plane based on a value of the random number. The encoder circuitry determines a refinement order in the bit-plane for refining un-coded bits present in the bit-plane, based on the determined refinement start position and a refinement step size. The refinement order is a sequence of positions of the un-coded bits in the bit-plane that will be refined in that sequence. The encoder circuitry refines the un-coded bits by allocating a refinement bit at the refinement start position in the bit-plane and then followed by the allocation of subsequent refinement bits in the determined refinement order.
    Type: Grant
    Filed: November 19, 2018
    Date of Patent: September 15, 2020
    Assignee: SONY CORPORATION
    Inventors: Hye-Yeon Cheong, Ali Tabatabai
  • Patent number: 10770088
    Abstract: A decoder generates decoded signals based on quantized signals. The decoder includes an inverse quantizer and a predictor circuit. The quantized signals are generated in an encoder by low-pass filtering an input signal and encoding the filtered signal using adaptive differential pulse code modulation. The predictor circuit has filter coefficients based on a frequency response of the low-pass filter used to filter the input signal.
    Type: Grant
    Filed: May 10, 2016
    Date of Patent: September 8, 2020
    Assignee: IMMERSION NETWORKS, INC.
    Inventors: James D. Johnston, Stephen White
  • Patent number: 10771895
    Abstract: An audio signal processing device includes a high pass filter to convert an input audio signal into a first audio signal and to output the first audio signal, a displacement estimation unit to estimate displacement amplitude of a speaker diaphragm when the input audio signal is inputted, a saturation processing unit to perform saturation processing to the displacement amplitude estimated in the displacement estimation unit or to a signal obtained by correcting the displacement amplitude, an audio signal generation unit to generate a second audio signal by using displacement amplitude obtained after the saturation processing in the saturation processing unit, and an output generation unit to generate an output signal by using the first and the second audio signals. With this configuration, a cracking sound of a speaker is reduced and a user is allowed to feel low frequency components.
    Type: Grant
    Filed: March 14, 2017
    Date of Patent: September 8, 2020
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kosuke Hosoya, Masaru Kimura
  • Patent number: 10756755
    Abstract: An encoder generates quantized signal words based on a difference signal. The encoder includes an adaptive quantizer. A step size applied by the adaptive quantizer is generated in a feedback loop and based on a loading factor and quantized signal words generated by the adaptive quantizer. The encoder includes coding circuitry which generates code words based on quantized signal words generated by the adaptive quantizer. The coding circuitry generates an escape code in response to a quantized signal word not being associated with a corresponding coding code word.
    Type: Grant
    Filed: May 10, 2016
    Date of Patent: August 25, 2020
    Assignee: IMMERSION NETWORKS, INC.
    Inventors: James D. Johnston, Stephen White
  • Patent number: 10743126
    Abstract: The present disclosure relates to a method and to an apparatus, both arranged for controlling acoustic signals to be recorded or reproduced by an electro-acoustical sound system. An initial digital filter is determined by solving an inverse problem, wherein the initial digital filter is configured to control acoustic signals to be recorded and/or reproduced by the electro-acoustical sound system; a frequency-dependent articulation parameter is determined by executing a time spectral psychoacoustic automatic audio quality test on the initial digital filter; a frequency-dependent regularization parameter, used for determining the initial digital filter, is tuned by use of the frequency-dependent articulation parameter; and, by use of the tuned frequency-dependent regularization parameter, a digital filter configured to control acoustic signals to be recorded or reproduced by the electro-acoustical sound system is determined.
    Type: Grant
    Filed: April 18, 2019
    Date of Patent: August 11, 2020
    Assignees: Huawei Technologies Co., Ltd., University of Parma
    Inventors: Simone Fontana, Angelo Farina
  • Patent number: 10741196
    Abstract: A sampler module divides an audio signal into a series of sequential samples. A signal quality detector module identifies, over a plurality of samples at an outset of the audio signal, a spectral variance of a first range of frequencies of the audio signal below a predetermined threshold frequency as being consistently greater than a spectral variance of a second range of frequencies of the audio signal above the predetermined threshold frequency and determines a signal treatment indication responsive to the identification. A signal enhancer module sequentially receives and analyzes one or more sample components of the audio signal to identify lost parts of the audio signal in the one or more sample components of respective sequential samples, and generates, in accordance with the signal treatment indication, a corresponding signal treatment for each of the one or more sample components of respective sequential samples having a corresponding identified lost part.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: August 11, 2020
    Assignee: Harman International Industries, Incorporated
    Inventors: Gilbert Arthur Joseph Soulodre, Kevin Eric Heber
  • Patent number: 10742255
    Abstract: The present disclosure relates to the field of mobile communications, and in particular, to a data compression method and device. In order to solve the problem of low compression efficiency in the prior art, the method comprises: sampling an obtained baseband signal and obtaining a number of discrete baseband signals to achieve an initial compression; calculating amplitude and phase values of each discrete baseband signal, on the basis of bit widths preset for the adjusted amplitude value and the phase value, carrying out a bit-truncating on the adjusted amplitude value and the phase value respectively, and combining the truncated phase value data and amplitude value data to obtain the final compressed discrete baseband signal. In this way, by truncating bits according to the preset bit width without distortion, the data bits of the baseband signal can be reduced accordingly, thereby reducing the amount of transmitted data, effectively improving the compression efficiency, and thus saving fiber resources.
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: August 11, 2020
    Assignee: DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.
    Inventors: Qinghua Li, Huarong Sun
  • Patent number: 10734006
    Abstract: In general, techniques are described by which to perform audio coding based on audio pattern recognition. A source device comprising a memory and a processor may be configured to perform the techniques. The memory may store audio data. The processor may obtain, from a plurality of categories, a category to which the audio data corresponds, and obtain, based on the category, a set of pyramid vector quantization (PVQ) parameters from a plurality of sets of PVQ parameters. The processor may also perform, based on the set of PVQ parameters, PVQ with respect to the audio data to obtain a residual identifier representative of the audio data, and specify, in the bitstream, the residual identifier.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: August 4, 2020
    Assignee: Qualcomm Incorporated
    Inventors: Taher Shahbazi Mirzahasanloo, Rogerio Guedes Alves
  • Patent number: 10708566
    Abstract: A method for playing a media file in an electronic device is provided. The method includes running, on an electronic device having an operating system (OS), a media presentation system, receiving, at the media presentation system, from a source a media file including audio and video signals, wherein the video signals include the video container of a form suitable for representation on a video output component of the electronic device, playing, at the media presentation system, the media file by processing the audio and video signals, and manipulating, at the media presentation system, the video container depending on an operating state of one or both of the media presentation system and the electronic device while the audio and video signals are being processed.
    Type: Grant
    Filed: February 9, 2017
    Date of Patent: July 7, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Don Joseph Rivera, Geraldine Forto, Jose Ricardo Iv Ruiz, Mark Joie Labios, Marvin Alec Padua, Maxine Claryze Micu, Yongduk Hwang
  • Patent number: 10699725
    Abstract: An encoder includes a low-pass filter to filter input audio signals. The low-pass filter has fixed filter coefficients. The encoder generates quantized signals based on a difference signal. The encoder includes an adaptive quantizer and a decoder to generate feedback signals. The decoder has an inverse quantizer and a predictor. The predictor has fixed control parameters which are based on a frequency response of the low-pass filter. The predictor may include a finite impulse response filter having fixed filter coefficients. The decoder may include an adaptive noise shaping filter coupled between the low-pass filter and the encoder. The adaptive noise shaping filter flattens signals within a frequency spectrum corresponding to a frequency spectrum of the low-pass filter.
    Type: Grant
    Filed: May 10, 2016
    Date of Patent: June 30, 2020
    Assignee: IMMERSION NETWORKS, INC.
    Inventors: James D. Johnston, Stephen White
  • Patent number: 10672411
    Abstract: An audio encoder for providing an encoded representation on the basis of an audio signal, wherein the audio encoder is configured to obtain a noise information describing a noise included in the audio signal, and wherein the audio encoder is configured to adaptively encode the audio signal in dependence on the noise information, such that encoding accuracy is higher for parts of the audio signal that are less affected by the noise included in the audio signal than for parts of the audio signal that are more affected by the noise included in the audio signal.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: June 2, 2020
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Tom Baeckstroem, Emma Jokinen
  • Patent number: 10631087
    Abstract: Methods and devices for processing and voice operated control are provided. The method can include performing a non-difference comparison between a first received sound and a second received sound, determining if speech exists based on the comparison, and transmitting or providing a decision that the speech is present to at least one among the device, a cell phone, a media player, or a portable computing device. Other embodiments are disclosed.
    Type: Grant
    Filed: July 27, 2018
    Date of Patent: April 21, 2020
    Assignee: Staton Techiya, LLC
    Inventors: John Usher, Steven Goldstein, Marc Boillot
  • Patent number: 10609504
    Abstract: Disclosed is an audio signal processing device including a processor for outputting an output audio signal generated based on an input audio signal. The processor may be configured to obtain a first pair of head-related transfer function (HRTF)s including a first ipsilateral HRTF and a first contralateral HRTF based on a position of a virtual sound source corresponding to the input audio signal, from a first set of transfer functions including HRTFs corresponding to each specific position with respect to listener, and generate the output audio signal by performing binaural rendering the input audio signal based on the first pair of HRTFs.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: March 31, 2020
    Assignee: GAUDI AUDIO LAB, INC.
    Inventors: Kyutae Park, Jeonghun Seo, Sangbae Chon, Sewoon Jeon, Hyunoh Oh
  • Patent number: 10593345
    Abstract: Apparatus for decoding an encoded audio signal including an encoded core signal and parametric data, including: a core decoder for decoding the encoded core signal to obtain a decoded core signal; an analyzer for analyzing the decoded core signal before or after performing a frequency regeneration operation to provide an analysis result; and a frequency regenerator for regenerating spectral portions not included in the decoded core signal using a spectral portion of the decoded core signal, the parametric data, and the analysis result.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: March 17, 2020
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Sascha Disch, Ralf Geiger, Christian Helmrich, Frederik Nagel, Christian Neukam, Konstantin Schmidt, Michael Fischer
  • Patent number: 10586545
    Abstract: The invention provides methods and devices for stereo encoding and decoding using complex prediction in the frequency domain. In one embodiment, a decoding method, for obtaining an output stereo signal from an input stereo signal encoded by complex prediction coding and comprising first frequency-domain representations of two input channels, comprises the upmixing steps of: (i) computing a second frequency-domain representation of a first input channel; and (ii) computing an output channel on the basis of the first and second frequency-domain representations of the first input channel, the first frequency-domain representation of the second input channel and a complex prediction coefficient. The upmixing can be suspended responsive to control data.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: March 10, 2020
    Assignee: Dolby International AB
    Inventors: Heiko Purnhagen, Lars Villemoes, Pontus Carlsson
  • Patent number: 10586548
    Abstract: An encoder for encoding an audio signal has a predictor, a factorizer, a transformer and a quantize and encode stage. The predictor is configured to analyze the audio signal to obtain prediction coefficients describing a spectral analog of the audio signal or a fundamental frequency of the audio signal and subject the audio signal to an analysis filter function dependent on the prediction coefficients to output a residual signal of the audio signal. The factorizer is configured to apply a matrix factorization onto an audiocorrelation or covariance matrix of synthesis filter function defined by the prediction coefficients to obtain factorized matrices. The transformer is configured to transform the residual signal based on the factorized matrices to obtain a transformed residual signal. The quantize and decode stage is configured to quantize the transformed residual signal to obtain a quantized transformed residual signal or an encoded quantized transformed residual signal.
    Type: Grant
    Filed: September 6, 2016
    Date of Patent: March 10, 2020
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Tom Baeckstroem, Johannes Fischer, Christian Helmrich
  • Patent number: 10573334
    Abstract: An apparatus for decoding an encoded audio signal, includes a spectral domain audio decoder for generating a first decoded representation of a first set of first spectral portions, the decoded representation having a first spectral resolution; a parametric decoder for generating a second decoded representation of a second set of second spectral portions having a second spectral resolution being lower than the first spectral resolution; a frequency regenerator for regenerating every constructed second spectral portion having the first spectral resolution using a first spectral portion and spectral envelope information for the second spectral portion; and a spectrum time converter for converting the first decoded representation and the reconstructed second spectral portion into a time representation.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: February 25, 2020
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Sascha Disch, Frederik Nagel, Ralf Geiger, Balaji Nagendran Thoshkahna, Konstantin Schmidt, Stefan Bayer, Christian Neukam, Bernd Edler, Christian Helmrich
  • Patent number: 10566004
    Abstract: A method and device for resampling an audio frequency signal in an audio frequency signal coding or decoding. The method includes the following acts for each signal block to be resampled: determining, by adaptive linear prediction, a number of future signal samples, this number being defined as a function of a chosen resampling delay; constructing a resampling support vector from at least samples of the current block and determined future signal samples; applying a resampling filter to the samples of the resampling support vector.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: February 18, 2020
    Assignee: Koninklijke Philips N.V.
    Inventors: Balazs Kovesi, Stephane Ragot
  • Patent number: 10559315
    Abstract: A method of encoding audio data includes determining an energy level of a first subband of frequency domain audio data, determining a bit allocation for a coarse quantization process and a fine quantization process, determining that the energy level of the first subband of frequency domain audio data is outside a predetermined range of energy levels for the coarse quantization process, reallocating bits assigned to the fine quantization process to an extended-range coarse quantization process, the extended-range coarse quantization process using an extended range of energy levels, wherein the extended range of energy levels is larger than the predetermined range of energy levels for the coarse quantization process, and quantizing the energy level of the first subband of frequency domain audio data using the extended-range coarse quantization process to produce a quantized extended-range coarse energy level.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: February 11, 2020
    Assignee: Qualcomm Incorporated
    Inventors: Taher Shahbazi Mirzahasanloo, Rogerio Guedes Alves
  • Patent number: 10546594
    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. An encoder sets an interval including 16 frames as interval section to be processed, outputs high band encoded data for obtaining the high band component of an input signal and low band encoded data obtained by encoding the low band signal of the input signal for each section to be processed. In this case, for each frame, a coefficient used in estimation of the high band component is selected and the section to be processed is divided into continuous frame segments including continuous frames from which the coefficient with the same section to be processed is selected.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: January 28, 2020
    Assignee: Sony Corporation
    Inventors: Yuki Yamamoto, Toru Chinen, Hiroyuki Honma, Yuhki Mitsufuji
  • Patent number: 10546591
    Abstract: A signal processing method and device includes obtaining spectral coefficients of a current frame of an audio signal, in which N sub-bands of the current frame comprises at least one of the spectral coefficients. A total energy of M successive sub-bands of the N sub-bands, a total energy of K successive sub-bands of the N sub-bands, and an energy of a first sub-band are obtained to determine whether to modify original envelope values of the M sub-bands. When the original envelope values of the M sub-bands are modified, encoding bits are allocated to each of the N sub-bands according to the modified envelope values of the M sub-bands.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: January 28, 2020
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Bin Wang, Lei Miao, Zexin Liu
  • Patent number: 10515648
    Abstract: An audio/speech encoding method is provided that includes transforming a time domain input signal to a frequency spectrum, and dividing the frequency spectrum to a plural of bands. The method also includes calculating a level of energies for each band, quantizing the energies for the each band, and calculating differential indices. The method additionally includes modifying a range of the differential indices for the Nth band when N is an integer of 2 or more, and replacing the differential index with the modified differential index, and not modifying a range of the differential indices for the Nth band when N is an integer of 1. The method further includes encoding the differential indices using a Huffman table selected based on a minimum value and a maximum value of the differential indices, and transmitting the encoded differential indices and a flag signal for indicating the selected Huffman table.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: December 24, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Zongxian Liu, Kok Seng Chong, Masahiro Oshikiri
  • Patent number: 10515652
    Abstract: Apparatus for decoding an encoded audio signal including an encoded core signal, including: a core decoder for decoding the encoded core signal to obtain a decoded core signal; a tile generator for generating one or more spectral tiles having frequencies not included in the decoded core signal using a spectral portion of the decoded core signal; and a cross-over filter for spectrally cross-over filtering the decoded core signal and a first frequency tile having frequencies extending from a gap filling frequency to an upper border frequency or for spectrally cross-over filtering a first frequency tile and a second frequency tile.
    Type: Grant
    Filed: May 22, 2018
    Date of Patent: December 24, 2019
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Sascha Disch, Ralf Geiger, Christian Helmrich, Frederik Nagel, Christian Neukam, Konstantin Schmidt, Michael Fischer
  • Patent number: 10490209
    Abstract: A content system accessing an audio stream. The content system inputs segments of the audio stream into a speech classifier for classification, the speech classifier generating, for the segments of the audio stream, raw scores representing likelihoods that the respective segment of the audio stream includes an occurrence of a speech sound. The content system generates binary scores for the audio stream based on the set of raw scores, each binary score generated based on an aggregation of raw scores from consecutive series of the segments of the audio stream. The content system generates one or more timing windows for the speech sounds in the audio stream based on the binary scores, each timing window indicating an estimate of a beginning and ending timestamps of one or more speech sounds in the audio stream.
    Type: Grant
    Filed: August 1, 2016
    Date of Patent: November 26, 2019
    Assignee: GOOGLE LLC
    Inventors: Sourish Chaudhuri, Neboj{hacek over (s)}a Ćirić, Khiem Pham
  • Patent number: 10475455
    Abstract: An approach is described that obtains spectrum coefficients for a replacement frame of an audio signal. A tonal component of a spectrum of an audio signal is detected based on a peak that exists in the spectra of frames preceding a replacement frame. For the tonal component of the spectrum a spectrum coefficients for the peak and its surrounding in the spectrum of the replacement frame is predicted, and for the non-tonal component of the spectrum a non-predicted spectrum coefficient for the replacement frame or a corresponding spectrum coefficient of a frame preceding the replacement frame is used.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: November 12, 2019
    Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
    Inventors: Janine Sukowski, Ralph Sperschneider, Goran Markovic, Wolfgang Jaegers, Christian Helmrich, Bernd Edler, Ralf Geiger
  • Patent number: 10469924
    Abstract: The method of capturing an audio scene includes acquiring sounds having first and second directivities to obtain first and second acquisition signals, respectively, the first directivity being higher than the second directivity, the steps of acquiring being performed simultaneously, and both acquisition signals together representing the audio scene; separately storing the first and second acquisition signals or mixing individual channels in the acquisition signals to obtain first and second mixed signal, respectively, and separately storing the first and second mixed signals, or transmitting the first and second mixed signals or the first and second acquisition signals to a loudspeaker setup and rendering the first mixed signal or the first acquisition signal using a loudspeaker arrangement having a first directivity and simultaneously rendering the second mixed signal or the second acquisition signal using a loudspeaker arrangement having a second directivity, the second loudspeaker directivity being lower t
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: November 5, 2019
    Assignee: Kaetel Systems GmbH
    Inventor: Klaus Kaetel
  • Patent number: 10460622
    Abstract: Using various embodiments, methods and systems for assisted programming using an interconnectable block based system are described. In one embodiment, the system comprises a plurality of interconnectable blocks, and a processing unit. The processing unit can determine a programming language construct, or the portion thereof, based on a sequence in which the plurality of interconnectable blocks are connected to each other and execute the programming language construct, or the portion thereof, and transmit the output to an output device. The output device, can be coupled to the interconnectable block based system and can be at least an electroacoustic transducer device or an electroluminescent device.
    Type: Grant
    Filed: May 26, 2017
    Date of Patent: October 29, 2019
    Inventor: Serge Rabyking
  • Patent number: RE47824
    Abstract: Provided is a method and apparatus for encoding or decoding a signal corresponding to a high frequency band in an audio signal. The method and apparatus for encoding a high frequency band detects and encodes frequency component(s) according to a pre-set criterion from a signal corresponding to a frequency band higher than a pre-set frequency and encodes energy value(s) of a signal to reconstruct band(s) in which the detected frequency component(s) are included. The method and apparatus for decoding a high frequency band decodes the signal by adjusting a signal to reconstruct a band in which important frequency component(s) are included by considering an energy value of the important frequency component(s). Accordingly, even though encoding or decoding is performed using a small number of bits, there is no degradation in sound quality of a signal corresponding to a high frequency band, and thus coding efficiency can be maximized.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: January 21, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ki-hyun Choo, Anton Porov, Eun-mi Oh, Jung-hoo Kim
  • Patent number: RE48916
    Abstract: An apparatus for processing an audio signal and method thereof are disclosed. The present invention includes receiving, by an audio processing apparatus, an audio signal including a first data of a first block encoded with rectangular coding scheme and a second data of a second block encoded with non-rectangular coding scheme; receiving a compensation signal corresponding to the second block; estimating a prediction of an aliasing part using the first data; and, obtaining a reconstructed signal for the second block based on the second data, the compensation signal and the prediction of aliasing part.
    Type: Grant
    Filed: July 22, 2019
    Date of Patent: February 1, 2022
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Hyen-O Oh, Chang Heon Lee, Hong-Goo Kang, Jeungook Song