Directive Circuits For Microphones Patents (Class 381/92)
  • Patent number: 11408962
    Abstract: The present invention relates to a small spatial sound source orientation detecting device, including a circuit board; three or more MEMS acoustic-electric transducers fixedly arranged on the circuit board and centrosymmetric distribution. The distance between adjacent MEMS acoustic-electric transducers is not more than one-half of the shortest wavelength of the sound source signal; and a micro-control unit, each MEMS acoustic-electric transducer is electrically connected to the micro-control unit respectively. The micro-control unit is to obtain the orientation information of the spatial sound source based on the acoustic signals collected by three or more MEMS acoustic-electric transducers. The present invention also provides a spatial sound source orientation detection method. The small spatial sound source orientation detecting device of the present invention has an ultra-small space size, and can accurately detect the orientation information of the sound source.
    Type: Grant
    Filed: November 6, 2019
    Date of Patent: August 9, 2022
    Inventor: Wei Shi
  • Patent number: 11411543
    Abstract: Systems and methods are provided for circuit configurations that maintain audio playback performance while reducing power consumption. In particular, a gain for a current analog-to-digital converter in an audio playback path is adjusted based on an amplitude of the input signal. Additionally, systems and methods are provided for transitioning between a modes of operation for large signals and mode of operation for small signals.
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: August 9, 2022
    Assignee: ANALOG DEVICES INTERNATIONAL UNLIMITED COMPANY
    Inventors: Atsushi Matamura, Abhishek Bandyopadhyay
  • Patent number: 11395061
    Abstract: According to one embodiment, a signal processing apparatus includes the following units. The transform unit transforms a first signal into a time-frequency domain to obtain a second signal, the first signal obtained by detecting sound at each of different positions. The first calculation unit calculates a first spatial correlation matrix based on the second signal. The second calculation unit calculates a second spatial correlation matrix based on a third signal obtained by delaying the second signal by a predetermined time. The spatial filter unit generates a spatial filter based on the first spatial correlation matrix and the second spatial correlation matrix, and filters the second signal by using the spatial filter.
    Type: Grant
    Filed: February 20, 2020
    Date of Patent: July 19, 2022
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventor: Takehiko Kagoshima
  • Patent number: 11388343
    Abstract: A photographing control method includes detecting a target sound from a target using a plurality of sound detectors of a mobile platform carrying a sensor, determining a target location of the target according to the target sound detected using the plurality of sound detectors, and controlling the mobile platform based at least in part on the target location.
    Type: Grant
    Filed: October 1, 2020
    Date of Patent: July 12, 2022
    Assignee: SZ DJI TECHNOLOGY CO., LTD.
    Inventors: Changxing Zhou, Zexun Cao
  • Patent number: 11381903
    Abstract: A modular speaker system, comprising an exoskeleton, configured to mechanically support and quick attach and release at least one functional panel and an electrical interface provided within the exoskeleton, configured to mate with a corresponding electrical connector of the functional panel. An optional endoskeleton is provided to support internal components. The system preferably provides a digital electronic controller, and the electrical interface is a digital data and power bus, with multiplexed communications between the elements of the system. The elements of the system preferably include at least one speaker, and other audiovisual and communications components. Multiple modules may be interconnected, communicating through the electrical interface. A base module may be provided to provide power and typical control, user and audiovisual interface connectors.
    Type: Grant
    Filed: July 13, 2020
    Date of Patent: July 5, 2022
    Assignee: Sonic Blocks Inc.
    Inventors: Scott D. Wilker, Jordan D. Wilker
  • Patent number: 11381909
    Abstract: Some embodiments of the present disclosure provide a method and an apparatus for forming a differential beam, a method and an apparatus for processing a signal, and a chip. The method for forming a differential beam includes: obtaining a differential beam forming signal according to an input signal acquired by two microphones in a microphone array (101); and performing a nonlinear adjustment on at least an amplitude of the differential beam forming signal based on a distance between the two microphones and a signal frequency of the input signal to obtain the adjusted differential beam forming signal (102). With the above solution, a constant beam characteristic of the differential beam forming signal can be ensured as much as possible for microphone arrays of different specifications.
    Type: Grant
    Filed: October 23, 2020
    Date of Patent: July 5, 2022
    Assignee: Shenzhen Goodix Technology Co., Ltd.
    Inventors: Na Li, Guoliang Li, Xinshan Wang, Hu Zhu, Hongjing Guo
  • Patent number: 11367452
    Abstract: Techniques are provided for spatial audio streaming using adaptive bitrate encoding and decoding in bandwidth limited virtual reality applications. A methodology implementing the techniques according to an embodiment includes calculating weight factors for audio channels associated with each of a plurality of microphones. The weight factors are based on the position and head angle, relative to the microphones, of a user wearing a head mounted display (HMD). The method also includes encoding and decoding the audio channels, for transmission to the HMD, at a selected bitrate, the bitrate based on the weight factor for the audio channel. The method further includes applying an adaptive gain compensation to each of the received and decoded audio channels, the gain compensation also based on the weight factor. The method further includes mixing the resulting gain compensated channels to generate a stereo audio signal to be played through speakers of the HMD.
    Type: Grant
    Filed: March 2, 2018
    Date of Patent: June 21, 2022
    Assignee: Intel Corporation
    Inventors: Fan Chen, Bo Qiu, Brian E. Woodruff, Peter Sankhagowit, Yunbiao Lin, Wenyi Tang, Yongfa Zhou, Jianwei Yang, Jianfang Zhu, Priya Balasubramanian, Ashish Singhi, Yating Wang, Yu Y Yang, Areeba Turabi
  • Patent number: 11363391
    Abstract: An exemplary hearing device configured to be worn by a user includes a microphone and a processor. The microphone detects an audio signal. The processor is configured to determine that the audio signal includes own voice content representative of a voice of the user and determine that an environmental noise level within the audio signal is below a threshold The processor is further configured to apply, based on the environmental noise level being below the threshold, a biomarker feature analysis heuristic to the own voice content.
    Type: Grant
    Filed: March 24, 2020
    Date of Patent: June 14, 2022
    Assignee: Sonova AG
    Inventors: Nadim El Guindi, Anne Thielen
  • Patent number: 11350213
    Abstract: An apparatus for spatial audio signal processing, the apparatus including at least one processor and at least one memory including a computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to: receive audio signals from a microphone array, the microphone array including three or more microphones forming a geometry with defined displacements between pairs of the three or more microphones; determine delay information between audio signals associated with the pairs of the three or more microphones; determine an operator based on the geometry with defined displacements between the pairs of the three or more microphones; apply the operator to the delay information to generate at least one direction parameter associated with the audio signals.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: May 31, 2022
    Assignee: Nokia Technologies Oy
    Inventors: Juha Vilkamo, Mikko-Ville Laitinen
  • Patent number: 11348584
    Abstract: A method for voice recognition via an earphone is disclosed. The method includes receiving first audio data via the first microphone and buffering the first audio data in response to the first trigger signal; receiving second audio data via the first microphone and recognizing whether the first audio data contains data of a wake-on-voice word in response to the second trigger signal; and recognizing whether the second audio data contains data of the wake-on-voice word. The first audio data is received and buffered in a first duration starting from when the first trigger signal is received and ending when the second trigger signal is received. The second audio data is received in a second duration starting from when the second trigger signal is received and ending when whether the first audio data contains data of the wake-on-voice word is recognized.
    Type: Grant
    Filed: July 9, 2020
    Date of Patent: May 31, 2022
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: Shaobin Liu, Qiang Tang, Jia Liu
  • Patent number: 11323802
    Abstract: Included are a first obtainer which obtains a first signal output from a first microphone, a second obtainer which obtains a second signal output from a second microphone installed in a position different from a position where first microphone is installed, a delayer which delays the second signal, a mixed sounds estimator which estimates noises mixed in the first signal on the basis of the second signal delayed by the delayer, and an eraser which erases the noises from the first signal, the noises being estimated by the mixed sounds estimator.
    Type: Grant
    Filed: March 2, 2020
    Date of Patent: May 3, 2022
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventor: Shinichi Yuzuriha
  • Patent number: 11317200
    Abstract: A sound source separation system includes: a controller that: acquires pieces of sound collection data with microphones that collect sounds output from first and second sound sources. The first sound source is at a first position at which effective distances from the microphones are equal and the second sound source is at a different position. The controller further acquires, based on the sound collection data, frequency spectra in two dimensions of a circumferential direction of a circle and a time direction. The first position is a center of the circle and each of the effective distances is a radius of the circle. The controller further separates, from the frequency spectra, a first sound source spectrum and a second sound source spectrum.
    Type: Grant
    Filed: July 10, 2019
    Date of Patent: April 26, 2022
    Assignee: UNIVERSITY OF YAMANASHI
    Inventor: Kenji Ozawa
  • Patent number: 11308972
    Abstract: The disclosure is generally directed to a system for reducing wind noise. A system includes one or more processors coupled to a non-transitory computer-readable storage medium having instructions encoded thereon that, when executed by the one or more processors, cause the one or more processors to obtain signals respectively generated from two or more microphones during a time period, the signals representing acoustic energy detected by the two or more microphones during the time period, determine a coherence between the signals, and determine a filter based on the coherence. The filter is configured to reduce wind noise in one or more of the signals.
    Type: Grant
    Filed: May 11, 2020
    Date of Patent: April 19, 2022
    Assignee: FACEBOOK TECHNOLOGIES, LLC
    Inventors: Gongqiang Yu, Michael Smedegaard, Tetsuro Oishi
  • Patent number: 11310588
    Abstract: An audio processing technique including obtaining a multi-channel audio signal, a first sound direction of interest and a second sound direction of interest; determining, for one or more frequency bands, a respective first range of sound directions encompassed by a first focus pattern directed to said first sound direction of interest and a respective second range of sound directions encompassed by a second focus pattern directed to said second sound direction of interest; determining, for said one or more frequency bands, respective overlap between the first and second ranges of sound directions; and deriving, based on the multi-channel audio signal and in accordance with said first and second focus patterns, a processed audio signal where sounds in said first and second sound directions of interest are emphasized in relation to sounds in other sound directions, said derivation including controlling emphasis in dependence of the determined overlap.
    Type: Grant
    Filed: November 9, 2020
    Date of Patent: April 19, 2022
    Assignee: Nokia Technologies Oy
    Inventors: Toni Makinen, Miikka Vilermo, Mikko Tammi, Jussi Virolainen
  • Patent number: 11304010
    Abstract: A hearing device includes: a first microphone configured to provide of a first microphone input signal; a sound impulse detector configured to detect a sound impulse; a processor configured to provide an electrical output signal based on the first microphone input signal; and a receiver configured to provide an audio output signal based on the electrical output signal; wherein the processor is configured to provide the electrical output signal by performing signal processing in a first set of frequency bands; wherein the sound impulse detector is configured to detect the sound impulse based on a second set of frequency bands, and wherein the second set of frequency bands based on which the sound impulse is detected covers a part of the first set of frequency bands.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: April 12, 2022
    Assignee: GN Hearing A/S
    Inventors: Niels Oddershede, Ditlev Munk Raból
  • Patent number: 11303997
    Abstract: In order for a microphone array to capture sound emanating from a moving object whose exact position is unknown at the time of arrival of the sound signal, a method for controlling the microphone array comprises steps of receiving position information that includes a position (pTR) and a velocity of the moving object from a tracking system, receiving a plurality of microphone signals that comprise sound of a sound event emanating from the moving object from a plurality of microphone capsules, calculating a directional characteristic from the plurality of microphone signals, wherein the directional characteristic is based on beamforming according to the position information and wherein an audio output signal is generated that includes the sound from a preferred direction of high sensitivity, and providing the audio output signal at an output.
    Type: Grant
    Filed: December 15, 2020
    Date of Patent: April 12, 2022
    Assignee: Sennheiser electronic GmbH & Co. KG
    Inventors: Alexander Krüger, Renato Pellegrini
  • Patent number: 11304003
    Abstract: At least two closely spaced identical or similar loudspeaker assemblies in a horizontal linear array, each loudspeaker assembly comprising at least two identical or similar loudspeakers pointing in different directions so that the loudspeaker assemblies have adjustable, controllable or steerable directivity characteristics. For example, a control module may drive, adjust, control, or steer the loudspeaker assemblies so that at least one acoustic wave field is generated at least at one listening position.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: April 12, 2022
    Assignee: Harman Becker Automotive Systems GmbH
    Inventors: Markus Christoph, Matthias Kronlachner
  • Patent number: 11297424
    Abstract: Techniques of source localization and acquisition involve a wideband joint acoustic source localization and acquisition approach in light of sparse optimization framework based on an orthogonal matching pursuit-based grid-shift procedure. Along these lines, a specific grid structure is constructed with the same number of grid points as compared to the on-grid case, but which is “shifted” across the acoustic scene. More specifically, it is expected that each source will be located close to a grid point in at least one of the set of shifted grids. The sparse solutions corresponding to the set of shifted grids are combined to obtain the source location estimates. The estimated source positions are used as side information to obtain the original source signals.
    Type: Grant
    Filed: October 10, 2018
    Date of Patent: April 5, 2022
    Assignee: GOOGLE LLC
    Inventors: Willem Bastiaan Kleijn, Jan Skoglund, Christos Tzagkarakis
  • Patent number: 11297426
    Abstract: Embodiments include an array microphone comprising a plurality of microphone sets arranged in a linear pattern relative to a first axis and configured to cover a plurality of frequency bands. Each microphone set comprises a first microphone arranged along the first axis and a second microphone arranged along a second axis orthogonal to the first microphone, wherein a distance between adjacent microphones along the first axis is selected from a first group consisting of whole number multiples of a first value, and within each element, a distance between the first and second microphones along the second axis is selected from a second group consisting of whole number multiples of a second value.
    Type: Grant
    Filed: August 22, 2020
    Date of Patent: April 5, 2022
    Assignee: Shure Acquisition Holdings, Inc.
    Inventors: Brent Robert Shumard, Mark Gilbert, James Michael Pessin, Emily Ann Wigley
  • Patent number: 11297423
    Abstract: Endfire linear array microphone systems and methods with consistent directionality and performance at different frequency ranges are provided. The endfire linear array microphone includes a delay and sum beamformer and a differential beamformer. The delay and sum beamformer may produce pickup patterns with good directionality at higher frequency ranges, but cause the pickup patterns to become more omnidirectional at lower frequencies. The differential beamformer may produce pickup patterns with good directionality at lower frequencies. By combining the delay and sum beamformer and differential beamformer within the linear array microphone, the overall directionality of the linear array microphone may be maintained at different frequency ranges while using the same microphone elements.
    Type: Grant
    Filed: May 21, 2019
    Date of Patent: April 5, 2022
    Assignee: Shure Acquisition Holdings, Inc.
    Inventor: Jordan Schultz
  • Patent number: 11297418
    Abstract: An acoustic signal is separated based on a difference in the distance from a sound source to a microphone. By using a filter obtained by associating a value corresponding to an estimated value of a short-distance acoustic signal which is obtained by using “a predetermined function” from a second acoustic signal derived from signals collected by “a plurality of microphones” and is emitted from a position close to “the plurality of microphones” with a value corresponding to an estimated value of a long-distance acoustic signal which is emitted from a position far from “the plurality of microphones”, a desired acoustic signal representing at least one of a sound emitted from a position close to “a specific microphone” and a sound emitted from a position far from “the specific microphone” is acquired from a first acoustic signal derived from a signal collected by “the specific microphone”.
    Type: Grant
    Filed: May 20, 2019
    Date of Patent: April 5, 2022
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Yuma Koizumi, Sakurako Yazawa, Kazunori Kobayashi
  • Patent number: 11277686
    Abstract: An electronic device is provided. The electronic device includes a camera, a plurality of microphones, at least one processor electrically coupled with the camera and the plurality of microphones. The at least one processor may acquire a video signal, based on a designated zoom level via the camera, acquire a plurality of audio signals respectively via the plurality of microphones while acquiring the video signal, identify a first signal characteristic of a first audio signal acquired via a first microphone and a second signal characteristic of a second audio signal acquired via a second microphone among the plurality of microphones, derive a control parameter for signal processing for the first audio signal and the second audio signal, based on the designated zoom level, the first signal characteristic, and the second signal characteristic, and perform audio signal processing including beamforming using the first audio signal and the second audio signal, based on the derived control parameter.
    Type: Grant
    Filed: August 7, 2020
    Date of Patent: March 15, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Byeongjun Kim, Jaehyun Kim, Sangju Lee, Junsoo Lee, Kyoungho Bang
  • Patent number: 11272064
    Abstract: This disclosure describes an apparatus and method of an embodiment of an invention that is a conferencing apparatus. This embodiment of the apparatus/system includes a microphone array that further comprises a plurality of microphones where each microphone is configured to sense acoustic waves and the plurality of microphones are oriented to develop a corresponding plurality of microphone signals; a processor, memory, and storage operably coupled to the microphone array, the processor configured to: perform a beamforming operation; perform an acoustic echo cancellation operation; perform a direction of arrival determination; and select one or more of the combined echo cancelled signals.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: March 8, 2022
    Assignee: ClearOne, Inc.
    Inventors: Ashutosh Pandey, Darrin T. Thurston, David K. Lambert, Tracy A. Bathurst
  • Patent number: 11265647
    Abstract: A sound processing device is provided with a correction unit that corrects a sound pickup signal. The sound pickup signal is obtained by picking up a sound with a microphone array. The correction unit corrects the sound pickup signal based on directional information that indicates a direction of the microphone array in spherical coordinates, during the picking up of the sound.
    Type: Grant
    Filed: April 30, 2020
    Date of Patent: March 1, 2022
    Assignee: Sony Corporation
    Inventors: Yu Maeno, Yuhki Mitsufuji
  • Patent number: 11257242
    Abstract: A method and device for determining operation of an autonomous device is disclosed. The method includes receiving pixel data and sound data associated with an environment at an instance of time, wherein the pixel data is received from least an image sensor associated with the autonomous device, and wherein the sound data is received from at least four sound sensors placed in a quadrilateral configuration on the autonomous device. Each quadrant of the pixel data is associated with each of the at least four sound sensors. The sound data received is mapped the to the matrix to identify one or more pixels in the matrix corresponding to the sound data based on a difference in amplitude between a first sound sensor of the at least four sound sensors recording maximum sound amplitude with a plurality of second sound sensors of the at least four sound sensors.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: February 22, 2022
    Assignee: Wipro Limited
    Inventor: Rishav Das
  • Patent number: 11259137
    Abstract: According to an example embodiment, a technique for spatial audio processing on basis of two or more input audio signals that represent an audio scene and at least one further input audio signal that represents at least part of the audio scene is provided, the technique including identifying a portion of interest (POI) in the audio scene; processing the two or more input audio signals into a spatial audio signal where the POI in the audio scene is suppressed; generating, on basis of the at least one further input audio signal, a complementary audio signal that represents the POI in the audio scene; and combining the complementary audio signal with the spatial audio signal to create a reconstructed spatial audio signal.
    Type: Grant
    Filed: May 8, 2018
    Date of Patent: February 22, 2022
    Assignee: Nokia Technologies Oy
    Inventors: Antti Eronen, Jussi Leppanen, Tapani Pihlajakuja, Arto Lehtiniemi
  • Patent number: 11257488
    Abstract: Provided is a source localization in an apparatus for performing a source localization, a target sound source enhancement or speech recognition. The source localization method using input signals input from a plurality of microphones, comprising steps of: (a) obtaining a log likelihood function or an auxiliary function under the assumption that a target source signal mixed with noises satisfies a CGMM model; (b) obtaining an equation for estimating parameter values of the log likelihood function or the auxiliary function so that a value of the log likelihood function or the auxiliary function is maximized recursively in each time frame; (c) estimating a covariance matrix recursively in each time frame; and (d) estimating a steering vector recursively by using the estimated covariance matrix, wherein the steering vector of the target sound source is estimated from the input signals.
    Type: Grant
    Filed: March 12, 2019
    Date of Patent: February 22, 2022
    Assignee: SOGANG UNIVERSITY RESEARCH FOUNDATION
    Inventors: Hyung Min Park, Seo Young Lee
  • Patent number: 11250383
    Abstract: A method, computer program product, and computing system for determining a time delay between a first audio signal received on a first audio detection system and a second audio signal received on a second audio detection system. The first and second audio detection systems are located within a monitored space. The first audio detection system is located with respect to the second audio detection system within the monitored space.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: February 15, 2022
    Assignee: NUANCE COMMUNICATIONS, INC.
    Inventors: Dushyant Sharma, Patrick A. Naylor, Uwe Helmut Jost
  • Patent number: 11252506
    Abstract: A howling suppression apparatus includes: an integration processing part that obtains the maximum value among L values corresponding to n-th frames of L i-th signals, for i=1, 2, . . . , L, L being any integer equal to or greater than 2, the L i-th signals being frequency-domain signals obtained from sound signals collected by multiple microphones; and a howling suppression processing part that performs howling suppression processing on at least any of the L i-th signals using the maximum value.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: February 15, 2022
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Shoichiro Saito, Kazunori Kobayashi, Akira Nakagawa, Noboru Harada
  • Patent number: 11252515
    Abstract: A binaural hearing system comprises a first and second hearing aids. The hearing aids each comprises antenna and transceiver circuitry allowing the exchange of audio signals between them. At least one of the hearing aids comprises primary and secondary adaptive 2-channel beamformers each providing a spatially filtered signal based on first and second beamformer-input signals. The primary and secondary 2-channel beamformers are coupled in a cascaded structure. In an embodiment, the spatially filtered signal of the secondary 2-channel beamformer may comprise an estimate of user's own voice. In an embodiment, the spatially filtered signal of the secondary 2-channel beamformer may comprise an estimate of a target signal in the environment. In an embodiment, the inputs to the secondary 2-channel beamformer may be beamformed signals from the first and second hearing aids respectively.
    Type: Grant
    Filed: November 30, 2020
    Date of Patent: February 15, 2022
    Assignee: OTICON A/S
    Inventors: Eleni Koutrouli, Michael Syskind Pedersen, Jesper Jensen, Jan M. De Haan
  • Patent number: 11245984
    Abstract: A system for presenting audio content to a user. The system comprises one or more microphones coupled to a frame of a headset. The one or more microphones capture sound from a local area. The system further comprises an audio controller integrated into the headset and communicatively coupled to an in-ear device worn by a user. The audio controller identifies one or more sound sources in the local area based on the captured sound. The audio controller further determines a target sound source of the one or more sound sources and determines one or more filters to apply to a sound signal associated with the target sound source in the captured sound. The audio controller further generates an augmented sound signal by applying the one or more filters to the sound signal and provides the augmented sound signal to the in-ear device for presentation to a user.
    Type: Grant
    Filed: July 31, 2020
    Date of Patent: February 8, 2022
    Assignee: Facebook Technologies, LLC
    Inventors: William Owen Brimijoin, II, Nils Thomas Fritiof Lunner, Philip Robinson, Ravish Mehra
  • Patent number: 11245981
    Abstract: A microphone array includes first and second microphones (Ma, Mb) placed on a first axis (f), a third microphone (Mc) placed on a plane (fg) formed by the first axis and a second axis (g) and at a position other than on the first axis, and a fourth microphone (Md) placed on a third axis (h), and at a position other than on the plane formed by the first and the second axes, and a processing circuit generates signals (Cx, Cy, Cz) having bidirectionality in first, second and third mutually perpendicular directions (x, y, z), and an omnidirectional signal (Cw), based on signals (Ba to Bd) obtained by sound collection by means of the first to fourth microphones. It is possible to generate signals having bidirectionality in mutually perpendicular directions, and an omnidirectional signal, without using special microphones, and without excessive restrictions with regard to the placement of the microphones.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: February 8, 2022
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Tomoharu Awano, Masaru Kimura, Satoru Furuta, Jin Hirano, Atsuyoshi Yano, Nobuaki Tanaka
  • Patent number: 11237241
    Abstract: Systems, methods, tangible non-transitory computer-readable media, and devices associated with detecting and locating sounds are provided. For example, sound data associated with sounds can be received. The sounds can include source sounds and background sounds received by microphones. Based on the sound data, time differences can be determined. Each of the time differences can include a time difference between receipt of a source sound and receipt of a background sound at each of the microphones respectively. A set of the source sounds can be synchronized based on the time differences. An amplified source sound can be generated based on a combination of the synchronized set of the source sounds. A source location of the source sounds can be determined based on the amplified source sound. Based on the source location, control signals can be generated in order to change actions performed by an autonomous vehicle.
    Type: Grant
    Filed: December 11, 2019
    Date of Patent: February 1, 2022
    Assignee: UATC, LLC
    Inventors: Owen Watt, Ashutosh Ghosh, Chao Zhang, Jacob Daniel Fetter
  • Patent number: 11227617
    Abstract: A device implementing an automatic speech recognition triggering system includes at least one processor configured to receive first and second audio signals respectively corresponding to first and second microphones of a device. The at least one processor is further configured to generate, based on at least one of the first or second audio signals, a third audio signal corresponding to a voice beam directed to an expected position of a mouth of a user. The at least one processor is further configured to determine whether wind noise is present in at least one of the first, second, or third audio signals. The at least one processor is further configured to, based on determining whether wind noise is present, an audio signal from among the second or third audio signals, for a determination of whether at least one of the first or second audio signals corresponds to the user.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: January 18, 2022
    Assignee: Apple Inc.
    Inventors: Sorin V. Dusan, Sungyub D. Yoo, Dubravko Biruski
  • Patent number: 11227625
    Abstract: A non-transitory computer-readable storage medium storing a program that causes a computer to execute a process, the process includes setting a plurality of speaker regions in different directions; calculating a phase difference in each of a plurality of different frequency bands on the basis of a plurality of sound signals acquired by the plurality of microphones; calculating a representative value of the number of phase differences belonging to each of a plurality of phase difference regions corresponding to each of the plurality of speaker regions on the basis of the calculated phase differences and the set plurality of speaker regions; comparing magnitudes of the calculated representative values; and determining, as a direction in which a speaker exists, a direction of a speaker region corresponding to a phase difference region where the compared representative value is large.
    Type: Grant
    Filed: May 27, 2020
    Date of Patent: January 18, 2022
    Assignee: FUJITSU LIMITED
    Inventor: Chikako Matsumoto
  • Patent number: 11217269
    Abstract: Approaches for detecting and reducing wind noise from audio signals captured at multi-microphone array are described. In aspects, the wind noise detector is constructed from probabilities of speech presence and wind noise presence, which are derives from statistics of the phase differences among the time aligned signals of multi-microphones in separate frequency regions. Wind noise, if detected, is reduced by a gain in frequency domain, which is also a function of the phase difference and its statistics.
    Type: Grant
    Filed: January 24, 2020
    Date of Patent: January 4, 2022
    Assignee: Continental Automotive Systems, Inc.
    Inventor: Jianming Song
  • Patent number: 11217264
    Abstract: An electronic device includes one or more microphones that generate audio signals and a wind noise detection subsystem. The electronic device may also include a wind noise reduction subsystem. The wind noise detection subsystem applies multiple wind noise detection techniques to the set of audio signals to generate corresponding indications of whether wind noise is present. The wind noise detection subsystem determines whether wind noise is present based on the indications generated by each detection technique and generates an overall indication of whether wind noise is present. The wind noise reduction subsystem applies one or more wind noise reduction techniques to the audio signal if wind noise is detected. The wind noise detection and reduction techniques may work in multiple domains (e.g., the time, spatial, and frequency domains).
    Type: Grant
    Filed: March 11, 2020
    Date of Patent: January 4, 2022
    Assignee: Meta Platforms, Inc.
    Inventors: Jun Yang, Joshua Bingham
  • Patent number: 11211081
    Abstract: An example method of operation may include designating sub-regions which collectively provide a defined reception space, receiving audio signals at a controller from the microphone arrays in the defined reception space, configuring the controller with known locations of each of the microphone arrays, assigning each of the sub-regions to at least one of the microphone arrays based on the known locations, and creating beamform tracking configurations for each of the microphone arrays based on their assigned sub-regions.
    Type: Grant
    Filed: August 11, 2020
    Date of Patent: December 28, 2021
    Assignee: Biamp Systems, LLC
    Inventors: Iain Alexander McCowan, Stefano Davolio, Richard S. Juszkiewicz, Nicholas William Metzar, Matthew V. Kotvis, Jeffrey William Sondermeyer, Jason Damori
  • Patent number: 11190891
    Abstract: Various embodiments of the present disclosure relate to an apparatus and a method for detecting an error of an audio component in an electronic device. The electronic device includes: at least one sound output device; at least one microphone; and a processor, and the processor is configured to identify a deviation related to a loudness of an audio signal acquired through the at least one microphone, and to determine whether an error related to the at least one microphone occurs, based at least on the deviation. Other embodiments are possible.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: November 30, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yang-Su Kim, Youngsoo Park, Keun Won Jang, Beak-Kwon Son, Nam-Woog Lee, Sunghwan Ko, Gangyoul Kim, Seung-Nam Kim, Jong-Hwan Kim
  • Patent number: 11184656
    Abstract: Disclosed examples include: determining periods of loudness in an audio signal by: determining whether a difference between a first amplitude at a first time and a second amplitude at a second time satisfies a loudness threshold; in response to the difference satisfying the loudness threshold, setting a loudness flag to a loud state corresponding to the second time, the second time occurring after the first time; determining whether a third amplitude at a third time after the second time satisfies a quiet threshold; in response to the third amplitude satisfying the quiet threshold, setting the loudness flag to a quiet state corresponding to the third time; and determining periods of loudness for the audio signal based on the states of the loudness flag at the second and third times; and indicating the audio signal as spillover based on the periods of loudness.
    Type: Grant
    Filed: June 9, 2020
    Date of Patent: November 23, 2021
    Assignee: THE NIELSEN COMPANY (US), LLC
    Inventor: Morris Lee
  • Patent number: 11184703
    Abstract: A device for sound localization includes a spatial feature generator, a voice detector, an angle selector, and an angle retriever. The spatial feature generator generates M spatial feature signals according to signals of N microphones of a microphone array. The voice detector generates at least one voice detection signal according to at least one of the signals of the N microphones. The angle selector outputs a candidate angle signal according to the M spatial feature signals to indicate a candidate direction of sound. The angle retriever generates a sound detection result according to the M spatial feature signals to indicate whether any sound source exists, and then outputs an estimated angle signal indicative of a direction of sound according to the sound detection result, the at least one voice detection signal, and the candidate angle signal.
    Type: Grant
    Filed: January 14, 2021
    Date of Patent: November 23, 2021
    Assignee: REALTEK SEMICONDUCTOR CORPORATION
    Inventors: Ming-Tang Lee, Chung-Shih Chu
  • Patent number: 11184579
    Abstract: The present technique relates to an apparatus and a method for video-audio processing, and a program each of which enables a desired object sound to be more simply and accurately separated. A video-audio processing apparatus includes a display control portion configured to cause a video object based on a video signal to be displayed; an object selecting portion configured to select the predetermined video object from the one video object or among a plurality of the video objects; and an extraction portion configured to extract an audio signal of the video object selected by the object selecting portion as an audio object signal.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: November 23, 2021
    Assignee: Sony Corporation
    Inventors: Hiroyuki Honma, Yuki Yamamoto
  • Patent number: 11166111
    Abstract: A hearing device includes: a first microphone configured to provide of a first microphone input signal; a sound impulse detector configured to detect a sound impulse; a processor configured to provide an electrical output signal based on the first microphone input signal; and a receiver configured to provide an audio output signal based on the electrical output signal; wherein the processor is configured to provide the electrical output signal by performing signal processing in a first set of frequency bands; wherein the sound impulse detector is configured to detect the sound impulse based on a second set of frequency bands, and wherein the second set of frequency bands based on which the sound impulse is detected covers a part of the first set of frequency bands.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: November 2, 2021
    Assignee: GN Hearing A/S
    Inventors: Niels Oddershede, Ditlev Munk Raból
  • Patent number: 11165492
    Abstract: The present disclosure is generally directed to an approach for spatializing audio from a received radio transmission to allow a radio operator to audibly perceive audio from the received radio transmission as if originating from a direction that corresponds to a physical location of the transmitting radio. On the receiving side, also referred to herein as a receive (RX) pipeline, a radio device configured consistent with the present disclosure includes utilizing an orientation tracker, and head related transform functions to generate a binaural representation of an incoming transmission such that audio associated with the same gets spatialized to sound as if coming from a direction corresponding to the transmitting radio. On the transmit side, also referred to herein as the transmit (TX) pipeline, includes utilizing a location sensor (e.g., a time of flight and/or GPS sensor) and encoding scheme such that radio transmissions include associated geographical location data.
    Type: Grant
    Filed: January 24, 2020
    Date of Patent: November 2, 2021
    Assignee: SOUTHWEST RESEARCH INSTITUTE
    Inventors: Tyler Thomas Bull, Albert J. Parvin, Jr., Gregg C. Williams
  • Patent number: 11158335
    Abstract: A voice-controlled device includes a beamformer for determining audio data corresponding to one or more directions and a beam selector for selecting in which direction a source of target audio lies. The device determines magnitude spectrums for each beam and for each frequency bin in each beam for each frame of audio data. The device determines frame-by-frame changes in the magnitude and filters the changes to smooth them. The device selects the beam having the greatest smoothed change in magnitude as corresponding to speech.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: October 26, 2021
    Assignee: Amazon Technologies, Inc.
    Inventors: Anshuman Ganguly, Srivatsan Kandadai, Wontak Kim
  • Patent number: 11158334
    Abstract: In a case where two microphones are used, sound source direction estimation of a plurality of sound sources can be performed with high accuracy. For this purpose, an inter-microphone phase difference is calculated for every frequency band in a microphone pair including two microphones that are installed apart from each other by a predetermined distance. Furthermore, for every frequency band in the microphone pair, a single sound source mask indicating whether or not a component of the frequency band is a single sound source is calculated. Then, the calculated inter-microphone phase difference and the calculated single sound source mask are input as feature quantities to a multi-label classifier, and a direction label associated with a sound source direction is output to the feature quantities.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: October 26, 2021
    Assignee: SONY CORPORATION
    Inventor: Atsuo Hiroe
  • Patent number: 11145319
    Abstract: A personal audio device configured to be worn on the head or body of a user and including a plurality of microphones configured to provide a plurality of separate microphone signals capturing audio from an environment external to the personal audio device, and a processor configured to process a first subset of the plurality of separate microphone signals using a first array processing technique to provide a first array signal, compare the first array signal to a microphone signal from the plurality of separate microphone signals, and select the first array signal or the microphone signal based on the comparison.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: October 12, 2021
    Assignee: Bose Corporation
    Inventor: Alaganandan Ganeshkumar
  • Patent number: 11137473
    Abstract: An acoustic goniometer device may include at least four microphones coupled to a collapsible structure. The device may further include a processor configured to receive at least four sound signals from the at least four microphones and to determine a direction of arrival of a sound event within three dimensions based on a time shift between the at least four sound signals. A method may include receiving at least four sound signals from at least four microphones coupled to a collapsible structure and determining a direction of arrival of a sound event within three dimensions based on a time shift between the at least four sound signals.
    Type: Grant
    Filed: March 16, 2020
    Date of Patent: October 5, 2021
    Assignee: Boise State University
    Inventors: Sin Ming Loo, Mark Laverty
  • Patent number: 11132751
    Abstract: A network of sensors is utilized to capture and relay data that is relevant to specific types of insurance coverage. Sensors included in the network can be deployed as specialized devices, or can be found in existing consumer products. Behavioral and environmental data collected from the sensor network is used to establish a feedback relationship between an insurance policy holder's behavior and insurance policy pricing. Various types of insurance products can benefit from behavioral and environmental data, including health insurance, dental insurance, disability insurance and automobile insurance. Collected data can be used for other purposes, such as initial risk assessment, risk monitoring, and prevention services.
    Type: Grant
    Filed: July 7, 2020
    Date of Patent: September 28, 2021
    Assignee: METROPOLITAN LIFE INSURANCE CO.
    Inventor: Terrance Luciani
  • Patent number: 11127415
    Abstract: An apparatus or method to allow a user to control an audio processing operation of an internal and/or external microphone(s). The method includes providing a configurable user interface which defines an audio processing operation. The status of the audio processing operation can be defined through interaction with the user interface. Capture of sound with the microphone(s) may be controlled based on the status of the audio processing operation.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: September 21, 2021
    Assignee: Nokia Technologies Oy
    Inventors: Birgir Magnusson, Koray Ozcan