Directive Circuits For Microphones Patents (Class 381/92)
  • Patent number: 10656268
    Abstract: An acoustic spatial diagnostic circuit couples to an array of microphones to successively sample an acoustic environment surrounding a wireless transceiver to generate an acoustic spatial map of activity within the environment based on sets of acoustic samples and execute one or more actions based on a related portion of the acoustic spatial map exhibiting one or more correlations with a spatial context condition of a wireless trained transceiver.
    Type: Grant
    Filed: June 3, 2019
    Date of Patent: May 19, 2020
    Assignee: ON SEMICONDUCTOR CONNECTIVITY SOLUTIONS, INC.
    Inventors: Aykut Bultan, Narayanan Bharath, Sam Heidari, Hossein Dehghan
  • Patent number: 10657982
    Abstract: An apparatus comprising at least one processor and at least one memory including 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 perform processing at least one control parameter dependent on at least one sensor input parameter, processing at least one audio signal dependent on the processed at least one control parameter, and outputting the processed at least one audio signal.
    Type: Grant
    Filed: November 17, 2016
    Date of Patent: May 19, 2020
    Assignee: Nokia Technologies Oy
    Inventors: Asta M. Karkkainen, Jussi Virolainen
  • Patent number: 10659890
    Abstract: A method for operating a hearing device. In the hearing device a first directional signal and a second directional signal are generated from an ambient sound signal. The first directional signal and the second directional signal are used to determine at a first response time a first adaptation coefficient for a first superposition of the first directional signal with the second directional signal for the purpose of noise suppression. It is intended here that the first directional signal and the second directional signal are used to determine at a second response time a second adaptation coefficient for a second superposition of the first directional signal with the second directional signal for the purpose of noise suppression. The first adaptation coefficient and the second adaptation coefficient are used to determine an output adaptation coefficient for forming an output signal by superposition of the first directional signal and the second directional signal.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: May 19, 2020
    Assignee: Sivantos Pte. Ltd.
    Inventors: Oliver Dressler, Eghart Fischer
  • Patent number: 10650841
    Abstract: The present technology relates to a sound source separation apparatus and a method which make it possible to separate a sound source at lower calculation cost. A communication unit receives a spatial frequency spectrum of a sound collection signal which is obtained by a microphone array collecting a plane wave of sound from a sound source, and a spatial frequency mask generating unit generates a spatial frequency mask for masking a component of a predetermined region in a spatial frequency domain on the basis of the spatial frequency spectrum. A sound source separating unit extracts a component of a desired sound source from the spatial frequency spectrum as an estimated sound source spectrum on the basis of the spatial frequency mask. The present technology can be applied to a spatial frequency sound source separator.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: May 12, 2020
    Assignee: SONY CORPORATION
    Inventor: Yuhki Mitsufuji
  • Patent number: 10638224
    Abstract: A beamforming audio capture apparatus comprises a microphone array (301) which is coupled to a first beamformer (303) and a second beamformer (305). The beamformers (303, 305) are filter-and-combine beamformers comprising a plurality of beamform filters each having an adaptive impulse response. A difference processor (309) determines a difference measure between beams of the first beamformer (303) and the second beamformer (305) in response to a comparison of the adaptive impulse responses of the two beamformers (303, 305). The difference measure may e.g. be used to combine the output signals of the beamformers (303, 305). An improved difference measure less sensitive to e.g. diffuse noise may be provided.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: April 28, 2020
    Assignee: Koninklijke Philips N.V.
    Inventors: Cornelis Pieter Janse, Brian Brand Antonius Johannes Bloemendal
  • Patent number: 10638222
    Abstract: A system performs an optimization algorithm to optimize two or more acoustic sensors of a microphone array. The system obtains an array transfer function (ATF) for a plurality of combinations of the acoustic sensors of the microphone array. In a first embodiment, the algorithm optimizes an active set of acoustic sensors on the eyewear device. The plurality of combinations may be all possible combinations of subsets of the acoustic sensors that may be active. In a second embodiment, the algorithm optimizes a placement of two or more acoustic sensors on an eyewear device during manufacturing of the eyewear device. Each combination of acoustic sensors may represent a different arrangement of the acoustic sensors in the microphone array. In each embodiment, the system evaluates the obtained ATFs and, based on the evaluation, selects a combination of acoustic sensors for the microphone array.
    Type: Grant
    Filed: June 22, 2018
    Date of Patent: April 28, 2020
    Assignee: Facebook Technologies, LLC
    Inventors: Ravish Mehra, Antonio John Miller, Vladimir Tourbabin
  • Patent number: 10623544
    Abstract: An electronic device may include a housing and a directional microphone. The housing may include a front surface, a rear surface positioned opposite the front surface, and a hollow cavity positioned between the front surface and the rear surface. The hollow cavity may include a front opening defined in the front surface and a rear opening defined in the rear surface. The directional microphone may include a front port and a rear port. The directional microphone may be mounted in the hollow cavity of the housing with the front port oriented toward the front opening and with the rear port oriented toward the rear opening.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: April 14, 2020
    Assignee: Sorenson IP Holdings, LLC
    Inventors: Jeffrey Charles Bullough, D. Mark Parry
  • Patent number: 10622004
    Abstract: Techniques for improving acoustic echo cancellation to attenuate an echo signal generated by a wireless loudspeaker are described. A relative position of the wireless loudspeaker is determined when sound from the wireless loudspeaker is determined to be the dominant sound (e.g., during output of a response to a user command or query or during speech by a far-side party during a two-way audio communication). A beam corresponding to the relative position is thereby selected for echo cancellation.
    Type: Grant
    Filed: August 20, 2018
    Date of Patent: April 14, 2020
    Assignee: Amazon Technologies, Inc.
    Inventors: Xianxian Zhang, Trausti Thor Kristjansson
  • Patent number: 10623854
    Abstract: Input audio data portions of a common time window index value generated by multiple microphones at a location are received. Subband portions are generated from the input audio data portions. Peak powers, noise floors, etc., are individually determined for the subband portions. Weights for the subband portions are computed based on the peak powers, the noise floors, etc., for the subband portions. An integrated audio data portion of the common time window index is generated based on the subband portions and the weight values for the subband portions. An integrated signal may be generated based at least in part on the integrated audio data portion.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: April 14, 2020
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Erwin Goesnar, David Gunawan
  • Patent number: 10623853
    Abstract: The disclosure relates to a microphone system for a motor vehicle, comprising a microphone housing in which a first microphone, a second microphone and a third microphone are disposed, with a signal processing device, which is designed to process respective signals provided by the microphones, wherein the signal processing device is configured to receive the signals of the first and the second microphones in a first operating mode in such a way that a driver directivity, which is oriented towards a first position of a driver's seat of the motor vehicle is provided, and the signals of the second and third microphones in that a passenger directivity, which is aligned with a first position of a passenger's seat of the motor vehicle is provided in the first operating mode, wherein the signal processing device is configured to process the signals of the first and the third microphones in a second operating mode in such a way that an alternative driver directivity is provided, which is oriented towards a second pos
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: April 14, 2020
    Assignee: AUDI AG
    Inventor: Martin Perl
  • Patent number: 10620698
    Abstract: An earpiece for use in voice dictation includes a speaker disposed within the earpiece housing, a microphone, and a processor disposed within the earpiece housing and operatively connected to the microphone and the speaker, wherein the processor is adapted to capture a voice stream from the microphone. The earpiece may further include a wireless transceiver disposed within the earpiece housing, the wireless transceiver operatively connected to the processor. The earpiece is configured to be controlled by a user through a plurality of different user interfaces to perform voice dictation.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: April 14, 2020
    Assignee: BRAGI GmbH
    Inventor: Peter Vincent Boesen
  • Patent number: 10616682
    Abstract: Microphone array calibration that does not require a calibrated source or calibrated reference microphone is provided. We provide a statistical (Bayesian) algorithm that (under condition of reasonable environment noise during calibration) can determine gain and phase differences of a whole array at once, even when the gain and/or phase of the source is unknown. More specifically, a Bayesian regression with complex log-normal prior and complex normal likelihood is employed. The inherent phase-wrapping ambiguity in this regression is resolved by exploiting the similarity of likelihood between a lattice point and its Euclidean Voronoi region.
    Type: Grant
    Filed: January 10, 2019
    Date of Patent: April 7, 2020
    Assignee: Sorama
    Inventors: Patrick Wijnings, Rick Scholte
  • Patent number: 10593344
    Abstract: Provided is a sound source localization method including steps of: (a) receiving a mixed signal of a target sound source signal and noise and echo signals through multiple microphones including at least two microphones; (b) generating a binarized mask based on a diffuseness by using a coherence-to-diffuseness ratio CDR, which is information on the target sound source and the noise source, by using the input signal; (c) pre-processing an input signal to multiple microphones by using the generated binarized mask; and (d) performing a predetermined algorithm such as the GCC-PHAT or the SRP-PHAT on the pre-processed input signal to estimate a direction of the target sound source.
    Type: Grant
    Filed: January 23, 2019
    Date of Patent: March 17, 2020
    Assignee: SOGANG UNIVERSITY RESEARCH FOUNDATION
    Inventors: Hyung Min Park, Ran Lee
  • Patent number: 10587439
    Abstract: Systems and methods are disclosed herein for modifying modulated signals for transmission. The system receives a modulated signal comprising a speech signal and a carrier wave and generates first and second spectral signals by converting the modulation signal and carrier wave from the time domain to the frequency domain respectively. The system then determines spectral bands for the first and second spectral signals. For each spectral band, the system calculates a weighted spectral band value based on a magnitude of the first spectral signal within the spectral band and generates a modified spectral signal by modifying the second spectral signal with the weighted spectral band value. The system then converts the modified spectral signal from the frequency domain to the time domain and transmits the converted modified spectral signal to a server.
    Type: Grant
    Filed: April 12, 2019
    Date of Patent: March 10, 2020
    Assignee: Rovi Guides, Inc.
    Inventor: Jeffry Copps
  • Patent number: 10581397
    Abstract: An integrated circuit, a circuit assembly and a method for operation the integrated circuit are disclosed. In embodiments the integrated circuit includes at least one supply voltage terminal configured to receive a supply voltage for operation the integrated circuit, at least one input terminal configured to receive an analog input signal corresponding to an audio signal, at least one output terminal configured to provide an analog output signal and a signal strength detector configured to detect a signal strength of the analog input signal provided at the at least one input terminal, wherein the integrated circuit is configured to amplify an audio signal based on the detected signal strength and to output a corresponding amplified signal at the at least one output terminal, wherein the integrated circuit comprises a signaling circuit configured to indicate an amplification setting of the integrated circuit at the at least one supply voltage terminal.
    Type: Grant
    Filed: September 7, 2015
    Date of Patent: March 3, 2020
    Assignee: TDK CORPORATION
    Inventors: Pirmin Hermann Otto Rombach, Gino Rocca, Anton Leidl, Armin Schober
  • Patent number: 10573291
    Abstract: A metamaterial comprising, a plurality of acoustic vector field sensors, each configured to sense an acoustic vector field of a fluid within a fluid-filled space in response to fluid waves, and producing an electrical signal corresponding to the sensed acoustic vector field; a processor configured to perform a time and space transform on the electrical signal; and at least one phased array transducer, configured to emit fluid waves according to a produced acoustic vector field pattern dependent on a result of the time and space transform, a within a portion of the fluid.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: February 25, 2020
    Assignee: The Research Foundation for the State University of New York
    Inventor: Steven M. Hoffberg
  • Patent number: 10574472
    Abstract: The disclosed computer-implemented method may include (1) establishing a communication channel to indirectly convey a conversation, (2) receiving, via the communication channel, a portion of the conversation, (3) presenting the portion of the conversation to a user, (4) receiving, via the communication channel, an additional portion of the conversation, (5) detecting an additional communication channel capable of conveying the conversation, (6) determining a human-perceivable difference between how the conversation has been conveyed via the communication channel and how the conversation will be conveyed via the additional communication channel, and (7) compensating for the human-perceivable difference when presenting the additional portion of the conversation to the user in order to smoothly transition the conversation from the communication channel to the additional communication channel. Various other methods, systems, and computer-readable media are also disclosed.
    Type: Grant
    Filed: November 1, 2018
    Date of Patent: February 25, 2020
    Assignee: Facebook Technologies, LLC
    Inventors: Andrew Lovitt, Antonio John Miller, Philip Robinson, Scott Selfon
  • Patent number: 10567901
    Abstract: A system and method is described for determining whether a loudspeaker device has relocated, tilted, rotated, or changed environment such that one or more parameters for driving the loudspeaker may be modified and/or a complete reconfiguration of the loudspeaker system may be performed. In one embodiment, the system may include a set of sensors. The sensors provide readings that are analyzed to determine 1) whether the loudspeaker has moved since a previous analysis and/or 2) a distance of movement and/or a degree change in orientation of the loudspeaker since the previous analysis. Upon determining the level of movement is below a threshold value, the system adjusts previous parameters used to drive one or more of the loudspeakers. By adjusting previous parameters instead of performing a complete recalibration, the system provides a more efficient technique for ensuring that the loudspeakers continue to produce accurate sound for the listener.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: February 18, 2020
    Assignee: APPLE INC.
    Inventors: Bruce C. Po, Richard M. Powell, Aram M. Lindahl, Baptiste P. Paquier, Phillip A. Kamp
  • Patent number: 10565326
    Abstract: Methods and systems are provided for determining a maximum expected response of a reverberant wavefield system to an excitation, where there is uncertainty in both the excitation and the dynamic properties of the system. An exemplary method of characterizing a reverberant response associated with an reverberant subsystem involves determining a first variance associated with an excitation energy exposed to the reverberant subsystem, determining a second variance associated with an effective damping loss factor of the reverberant subsystem, determining a third variance associated with an input modal power acceptance of the reverberant subsystem—and for multiple connected subsystems, determining a fourth variance associated with a coupling loss factor of the coupled subsystems—determining a cumulative variance associated with the reverberant response based on the first variance, the second variance, and the third variance, and displaying an output influenced by the cumulative variance on a display device.
    Type: Grant
    Filed: July 29, 2014
    Date of Patent: February 18, 2020
    Assignee: SONELITE INC.
    Inventor: Paul Graeme Bremner
  • Patent number: 10558424
    Abstract: A speaker device with equalization (EQ) control is provided, wherein the speaker device may be a pair of earbuds/earphones or a headset having a pair of headphones, comprising: an audio receiving port for receiving audio signals from an audio source, a circuitry comprising at least a processor and a memory, the processor being configured to execute one or more firmware or software programs to perform tasks for processing the audio signals, including equalization of the audio signals according to one of multiple EQ settings stored in the memory, a user input terminal for detecting a user input to select one of the EQ settings; and a pair of speaker drivers for emitting sound corresponding to the processed audio signals.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: February 11, 2020
    Assignee: Peag, LLC
    Inventors: Winthrop Cramer, Justin Liu
  • Patent number: 10547961
    Abstract: A signal processing apparatus includes: an acquisition unit configured to acquire a sound collection signal based on collection of sounds in a sound collection target region by a plurality of microphones; an identification unit configured to identify a position or a region corresponding to an object in the sound collection target region; and a generation unit configured to generate a plurality of acoustic signals corresponding to a plurality of divided areas obtained by dividing the sound collection target region based on the identified position or the identified region, using the acquired sound collection signal.
    Type: Grant
    Filed: October 10, 2017
    Date of Patent: January 28, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Kyohei Kitazawa, Noriaki Tawada
  • Patent number: 10536783
    Abstract: A hearing aid comprises a sensor configured for detecting a focus of an end user on a real sound source, a microphone assembly configured for converting sounds into electrical signals, a speaker configured for converting the electrical signals into sounds, and a control subsystem configured for modifying the direction and/or distance of a greatest sensitivity of the microphone assembly based on detected focus. A virtual image generation system comprises memory storing a three-dimensional scene, a sensor configured for detecting a focus of the end user on a sound source, a speaker configured for conveying sounds to the end user, and a control subsystem configured for causing the speaker to preferentially convey a sound originating from the sound source in response to detection of the focus, and for rendering image frames of the scene, and a display subsystem configured for sequentially displaying the image frames to the end user.
    Type: Grant
    Filed: February 2, 2017
    Date of Patent: January 14, 2020
    Assignee: Magic Leap, Inc.
    Inventors: George Alistair Sanger, Samuel A. Miller, Brian Schmidt, Anastasia Andreyevna Tajik
  • Patent number: 10536793
    Abstract: The invention relates to a method for reproducing spatially distributed sounds of a multichannel audio signal comprising: receiving time-dependent input audio signals and performing a time-frequency transform; for each time-frequency tile, determining an active directional vector {right arrow over (Da)} and a reactive directional vector {right arrow over (Dr)} from time-frequency representations of different input channels for said time-frequency tile, determining positions of virtual sound sources (VS1, VS2, VS3) with respect to the reference listening point (O) from the active directional vector {right arrow over (Da)} and the reactive directional vector {right arrow over (Dr)}, and determining frequency signal values to each virtual sound sources (VS1, VS2, VS3), and distributing time-frequency signal values of said virtual sound sources to electroacoustic transducers on the basis of a comparison between the positions of the virtual sound sources in the virtual spatial configuration and the actual position
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: January 14, 2020
    Assignee: A-VOLUTE
    Inventors: Raphael Nicolas Greff, Hong Cong Tuyen Pham
  • Patent number: 10510362
    Abstract: The technology described in this document can be embodied in a computer-implemented method that includes receiving information representing audio captured by a microphone array, wherein the information includes multiple datasets each representing audio signals captured in accordance with a sensitivity pattern along a corresponding direction with respect to the microphone array. The method also includes computing, using one or more processing devices for each of the multiple datasets, one or more quantities indicative of human voice activity captured from the corresponding direction, and generating, based at least on the one or more quantities computed for a plurality of the multiple datasets, a directional audio signal representing audio captured from a particular direction.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: December 17, 2019
    Assignee: Bose Corporation
    Inventors: Matthew Ryan Hicks, David Rolland Crist, Amir Reza Moghimi
  • Patent number: 10511807
    Abstract: To provide an information processing apparatus, an information processing method, and a program capable of aurally producing distance in a virtual three-dimensional space by using the space for a connection to a communication partner, and realizing more comfortable communication. An information processing apparatus including: a reception unit configured to receive data from a communication destination; and a reproduction control unit configured to perform control such that sound data of a space of the communication destination is reproduced from a sound output unit in a space of a communication source with an output value in accordance with separation distance between the communication destination and the communication source disposed in a virtual three-dimensional space, the output value being different for each sound source type.
    Type: Grant
    Filed: September 20, 2016
    Date of Patent: December 17, 2019
    Assignee: Sony Corporation
    Inventors: Yusuke Sakai, Atsushi Izumihara, Daisuke Miki
  • Patent number: 10506327
    Abstract: In embodiments of the present invention, a method of modifying ambient sound received by an earpiece in accordance with an environmental characterization may have one or more of the following steps: (a) receiving the ambient sound at a microphone operably coupled to the earpiece, (b) determining, via a processor operably coupled to the microphone, the environmental characterization based on the ambient sound, (c) modifying, via the processor, the ambient sound in accordance with a plurality of parameters associated with the environmental characterization to create a modified ambient sound, (d) communicating, via a speaker operably coupled to the earpiece, the modified ambient sound, (e) receiving the ambient sound at the second microphone, (f) determining, via the processor, a location of the ambient sound from a temporal differential and an intensity differential between the reception of the ambient sound at the microphone and the reception of the ambient sound at the second microphone, and (g) determining,
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: December 10, 2019
    Assignee: BRAGI GmbH
    Inventor: Peter Vincent Boesen
  • Patent number: 10504516
    Abstract: A voice control system for a police vehicle, including: a single azimuthally-sensitive directional microphone configured to receive an audio command for controlling an aspect of the police vehicle and identify a direction of origin of the audio command; and a controller including a processor and tangible memory encoding instructions which, when executed by the processor, cause the controller to: identify a command associated with the audio command received by the single azimuthally-sensitive directional microphone; and when the direction of origin allows for the command, initiate the command to control the aspect of the police vehicle.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: December 10, 2019
    Assignee: Federal Signal Corporation
    Inventors: Justin Barth, Paul Ferrara, Jorge Guerreiro, Albena Iotova-Gagnaire, Michael Pula, Scott Thomas Rohrbaugh
  • Patent number: 10506337
    Abstract: A multi-ringed differential microphone array includes a first number of microphones situated along a first substantial circle having a first radius, a second number of microphones situated along a second substantial circle having a second radius, and a processing device, communicatively coupled to the first number microphones and the second number of microphones, to receive a plurality of electronic signals generated by the first number of microphones and the second number of microphones, determine a differential order (N) based on the second number, and execute an N-th order minimum-norm beamformer to calculate an estimate of the sound source based on the plurality of electronic signals.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: December 10, 2019
    Assignee: Northwestern Polytechnical University
    Inventors: Jingdong Chen, Gongping Huang
  • Patent number: 10493909
    Abstract: Vehicle communication systems and methods of operating the same. The vehicle communication system includes one or more microphones and one or more loudspeakers positioned about a vehicle. The system includes processor executable instructions for determining that the vehicle is operating in an emergency mode and, in response, activating a first microphone and a first loudspeaker for enabling communication between a first acoustic zone within the vehicle and a second acoustic zone exterior to the vehicle. The system may detect, from one of the first acoustic zone and the second acoustic zone, a first acoustic input and generate a second signal from the detected first acoustic input. The system may transmit the second signal to the first loudspeaker for producing sound waves that are audible in the other of the first acoustic zone and the second acoustic zone.
    Type: Grant
    Filed: May 22, 2018
    Date of Patent: December 3, 2019
    Assignees: BlackBerry Limited, 2236008 Ontario Inc.
    Inventors: Nicholas Patrick Alfano, Rodney Dwight Rempel
  • Patent number: 10490208
    Abstract: A signal processing device for configurable voice activity detection. A plurality of inputs receive respective microphone signals. A microphone signal router configurably routes the microphone signals. At least one voice activity detection module receives a pair of microphone signals from the router, and produces a respective output indicating whether speech or noise has been detected by the voice activity detection module in the respective pair of microphone signals. A voice activity decision module receives the output of the voice activity detection module(s) and determines whether voice activity exists in the microphone signals. A spatial noise reduction module receives microphone signals from the microphone signal router, and performs adaptive beamforming based in part upon the output of the voice activity decision module, and outputs a spatial noise reduced output. The device permits simple configurability to deliver spatial noise reduction for one of a wide variety of headset form factors.
    Type: Grant
    Filed: April 5, 2018
    Date of Patent: November 26, 2019
    Assignee: Cirrus Logic, Inc.
    Inventors: Brenton Robert Steele, Hu Chen, Ben Hutchins
  • Patent number: 10492008
    Abstract: A hearing system performs nonlinear processing of signals received from a plurality of microphones using a neural network to enhance a target signal in a noisy environment. In various embodiments, the neural network can be trained to improve a signal-to-noise ratio without causing substantial distortion of the target signal. An example of the target sound includes speech, and the neural network is used to improve speech intelligibility.
    Type: Grant
    Filed: April 6, 2016
    Date of Patent: November 26, 2019
    Assignee: Starkey Laboratories, Inc.
    Inventors: Buye Xu, Ivo Merks, Frederic Philippe Denis Mustiere
  • Patent number: 10477310
    Abstract: A method includes performing, at a processor, signal processing operations on signals captured by each microphone in a microphone array. The method also includes performing a first directivity adjustment by applying a first set of multiplicative factors to the signals to generate a first set of ambisonic signals. The first set of multiplicative factors is determined based on a position of each microphone in the microphone array, an orientation of each microphone in the microphone array, or both.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: November 12, 2019
    Assignee: Qualcomm Incorporated
    Inventors: S M Akramus Salehin, Ricardo De Jesus Bernal Castillo, Michael Ericson, Ferdinando Olivieri, Nils Gunther Peters, Dipanjan Sen
  • Patent number: 10477309
    Abstract: The present technique relates to a sound field reproduction device, a sound field reproduction method, and a program that make it possible to further accurately reproduce a certain sound field. A feature amount extraction unit extracts a main sound source feature amount from a sound pickup signal obtained by picking up a sound from a main sound source. A main sound source separation unit separates the sound pickup signal obtained through the sound pickup with a microphone array that mainly picks up a sound from the main sound source into a main sound source component and an auxiliary sound source component using the main sound source feature amount. On the basis of the main sound source component and the auxiliary sound source component that have been separated, a main sound source emphasis unit generates a signal in which the main sound source components are emphasized. A drive signal for a speaker array is generated from the signal generated in this manner and supplied to the speaker array.
    Type: Grant
    Filed: April 3, 2015
    Date of Patent: November 12, 2019
    Assignee: Sony Corporation
    Inventor: Yuhki Mitsufuji
  • Patent number: 10476537
    Abstract: A single-ended signal transmission system recovers a noise signal associated with a data input signal and uses the recovered noise signal to compensate for noise on the data input signal. The noise signal may be recovered from a noise reference signal line, or clock signal line, or a data signal line associated with a DC-balanced data input signal. The recovered noise signal may be represented as an analog signal or a digital signal. The recovered noise signal may be processed to compensate for DC offset and nonlinearities associated with one or more different input buffers. In one embodiment, the recovered noise signal includes frequency content substantially below a fundamental frequency for data transmission through the data input signal.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: November 12, 2019
    Assignee: NVIDIA Corporation
    Inventors: Nikola Nedovic, Brian Matthew Zimmer
  • Patent number: 10469944
    Abstract: An apparatus comprising: an input configured to receive at least three microphone audio signals, the at least three microphone audio signals comprising at least two near microphone audio signals generated by at least two near microphones located near to an desired audio source and at least one farmic audio signal generated by a farmic located further from the desired audio source; a first interference canceller module configured to generate a first processed audio signal based on a first selection from the near microphone audio signals; at least one further interference canceller module configured to generate at least one further processed audio signal based on at least one further selection from the at least three microphone audio signals; a comparator configured to determine from the first processed audio signal and the at least one further processed audio signal the audio signal with greater noise suppression.
    Type: Grant
    Filed: October 16, 2014
    Date of Patent: November 5, 2019
    Assignee: Nokia Technologies Oy
    Inventors: Riitta Niemisto, Ville Myllyla
  • Patent number: 10463476
    Abstract: Presented herein are signal processing techniques that integrate an adaptive filtering process with a parametric post-filter in the frequency domain to control the amount of body noise reduction in each of a plurality of frequency bands (e.g., tuneable body noise reduction in each frequency band). The parametric post-filter generates a gain mask that is tuned to responses of sensors to separate external acoustic sounds and body noises, while limiting distortions of own voice. The techniques presented herein can preserve external acoustic sound quality, attenuate own voice to a comfortable level without distortion, suppress body noises, and/or lower a noise floor of the output signal.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: November 5, 2019
    Assignee: COCHLEAR LIMITED
    Inventors: Federico Bolner, Adam Hersbach
  • Patent number: 10455325
    Abstract: A method for estimating directions of arrival of audio signals based on categories is disclosed herein. The method includes receiving an audio signal; generating a plurality of filters based on the audio signal, each of the filters corresponding to one of a plurality of sound content categories; separating the audio signal into a plurality of content-based audio signals by applying the filters to the audio signal, each of the content-based audio signals contains a content of a corresponding sound content category among the plurality of sound content categories; for each of the content-based audio signals, generating a direction of arrival (DOA) for a sound source of the content-based audio signal.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: October 22, 2019
    Assignee: Knowles Electronics, LLC
    Inventors: John Woodruff, Pratik Shah, Sai Ravi Teja Pulugurtha, Harsha Rao
  • Patent number: 10455341
    Abstract: A noise monitoring system has at least two microphones and a microphones sensitivity register. The microphones are arranged physically with respect to each other such that when the microphones are placed within an acoustic field to be monitored, the RMS signal level of that acoustic field at each of the microphones is substantially the same for a monitoring frequency range. The microphones sensitivity register has reference data indicative of an initial sensitivity difference (?0) between output RMS signal levels measured by the microphones in a reference acoustic field. A current difference (?1, ?2) between the RMS signal levels concurrently output by the microphones for the currently monitored acoustic field is compared. A fault signal is generated if the current difference (?1, ?2) differs from the initial sensitivity difference (?0) more than an acceptable limit.
    Type: Grant
    Filed: December 24, 2018
    Date of Patent: October 22, 2019
    Assignee: SVANTEK SP. Z.O.O.
    Inventor: Wieslaw Barwicz
  • Patent number: 10455323
    Abstract: The invention concerns a microphone probe having a body being substantially a first solid of revolution with a number of audio sensors distributed thereon and located in the recesses. The recesses have substantially a shape of a second body of revolution with an axis of symmetry perpendicular to the surface of the body. The sensors are connected to an acquisition unit, that delivers audio signals to the output. The audio sensors are digital audio sensors comprising printed circuit board with MEMS microphone element mounted thereon, wherein MEMS microphone element is mounted on the side of the printed circuit board facing the inner side of the body, so that the sound reaches MEMS microphone element via recess and opening. The depth of recesses is in a range between 3 and 20 mm. The acquisition unit has a clocking device determining common time base for audio sensors.
    Type: Grant
    Filed: February 9, 2017
    Date of Patent: October 22, 2019
    Assignee: ZYLIA SPOLKA Z OGRANICZONA ODPOWIEDZIALNOSCIA
    Inventors: Tomasz Zernicki, Maciej Kurc, Marcin Chryszczanowicz, Jakub Zamojski, Piotr Makaruk, Piotr Szczechowiak, Lukasz Januszkiewicz
  • Patent number: 10446166
    Abstract: Example embodiments disclosed herein relate to assessment and adjustment for an audio environment. A computer-implemented method is provided. The method includes obtaining a first audio signal captured by a device located in an environment. The method also includes analyzing a characteristic of the first audio signal to determine an acoustic performance metric for the environment. The method further includes, in response to the acoustic performance metric being below a threshold, providing a first task for a user to perform based on the characteristic of the first audio signal. The first task is related to an adjustment to a setting of the environment. Embodiments in this regard further provide a corresponding computer program product. Corresponding system and computer program product are also disclosed.
    Type: Grant
    Filed: July 12, 2017
    Date of Patent: October 15, 2019
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Glenn N. Dickins, Paul Holmberg, Dong Shi
  • Patent number: 10438588
    Abstract: A mechanism is described for facilitating simultaneous recognition and processing of multiple speeches from multiple users according to one embodiment. A method of embodiments, as described herein, includes facilitating a first microphone to detect a first speech from a first speaker, and a second microphone to detect a second speech from a second speaker. The method may further include facilitating a first beam-former to receive and process the first speech, and a second beam-former to receive and process the second speech, where the first and second speeches are at least received or processed simultaneously. The method may further include communicating a first output associated with the first speech and a second output associated with the second speech to the first speaker and the second speaker, respectively, using at least one of one or more speaker devices and one or more display devices.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: October 8, 2019
    Assignee: INTEL CORPORATION
    Inventors: Raghavendra Rao R, Przemyslaw Maziewski, Adam Kupryjanow, Lukasz Kurylo
  • Patent number: 10433072
    Abstract: The equipment of micro-acoustic detection analysis and the processing method of audio signal array based on this equipment, which is the field of micro-acoustic detection, could give a solution that having an excessive sound intensity lower limit using capacitor micro-acoustic detector, and using current way of audio signal processing could not identification and positioning for sound source from micro-acoustic detector at same time. This equipment detects sound pressure based on micro-acoustic detection cell of graphene membrane. The method includes separate the noise from audio signal, compare the extract audio feature and sound source position information with multi sound source signal stored in memory, identifying the target sound source, and the procedure of positioning the sound source according the sound source position information. This invention could be applied to the micro-acoustic detection and then identification and positioning using the detected sound source.
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: October 1, 2019
    Assignee: HARBIN INSTITUTE OF TECHNOLOGY
    Inventors: Lin Yang, Jianwei Zhang, Chengyu Hou, Guojian Cao
  • Patent number: 10425968
    Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). The present disclosure provides a differential beamforming based random access method, base station, and user equipment, wherein the differential beamforming based random access method comprises, by a base station: receiving a preamble sequence from a first terminal in a differential beamforming receiving mode; determining a base station beam direction angular deviation based on the preamble sequence; and adjusting a base station beam according to the base station beam direction angular deviation, and transmitting a random access response signal to the first terminal through the adjusted base station beam.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: September 24, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chen Qian, Bin Yu, Qi Xiong, Chengjun Sun
  • Patent number: 10425726
    Abstract: The present technology relates to a signal processing device, a signal processing method, and a program that can provide sound with more increase in realistic sense by restoring a difference of sound pressure between sound sources. The signal processing device includes: an acoustic signal obtaining unit that obtains an acoustic signal; a sound source positional information obtaining unit that obtains sound source positional information relating to a distance between a sound source and a sound collecting unit that collects sound from the sound source; a listening positional information obtaining unit that obtains listening positional information relating to a distance between a reproducing device that reproduces the acoustic signal and a listener who listens to sound reproduced by the reproducing device; and a correcting unit that corrects gain of the acoustic signal on a basis of the sound-source positional information and the listening positional information. The present technology can be applied to, e.g.
    Type: Grant
    Filed: October 12, 2016
    Date of Patent: September 24, 2019
    Assignee: Sony Corporation
    Inventors: Masafumi Takahashi, Atsushi Izumihara
  • Patent number: 10425733
    Abstract: A microphone equalization system determines an equalization filter which is used to spectrally shape a signal from a microphone. A loudspeaker has an enclosure, a back volume, a driver diaphragm, and a sensor located inside the back volume. An external microphone is located outside the loudspeaker. A processor determines the equalization filter based on comparison of a first signal from an output of the sensor and a second signal from an output of the external microphone both of which are produced while the driver diaphragm produces acoustic pressure waves produced by the driver diaphragm. The processor is to then spectrally shape a third signal from the output of the external microphone that is responsive to further acoustic pressure waves from a source other than the loudspeaker. Other aspects are also described and claimed.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: September 24, 2019
    Assignee: Apple Inc.
    Inventors: Sylvain J. Choisel, Afrooz Family, Simon K. Porter
  • Patent number: 10418049
    Abstract: The present invention makes it possible to reduce noise from a driving unit with a two-channel microphone configuration. An audio processing apparatus has a first microphone whose main acquisition target is sound from outside of the apparatus, a second microphone whose main acquisition target is driving noise from the driving unit, and a noise removing unit that generates two-channel audio data in which driving noise made by the driving unit of the apparatus has been reduced based on the difference between time-series audio data acquired by the first microphone and time-series audio data acquired by the second microphone. This noise removing unit has two adaptive filter units that respectively perform filter processing on time-series audio data from the first microphone and time-series audio data from the second microphone, and generates stereo two-channel audio data.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: September 17, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Yusuke Toriumi
  • Patent number: 10405202
    Abstract: Systems and methods of determining a transmitter or receiver configuration in a wireless communication system are provided. In one exemplary embodiment, a method performed by a radio node (101, 111, 200, 300a-b, 500, 700a-b) in a wireless communication system (100) comprises determining (405) a first transmitter or receiver configuration for transmission or reception in a first frequency spectrum (121) having a first sub-carrier spacing (123) based on a channel information measurement in a second frequency spectrum (131) having a second sub-carrier spacing (133), wherein the first (123) and second (133) sub-carrier spacings are different and the first (121) and second (131) frequency spectrums overlap.
    Type: Grant
    Filed: May 5, 2017
    Date of Patent: September 3, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Martin Hessler, Jonas Fröberg Olsson
  • Patent number: 10397726
    Abstract: Focusing sound signals in a shared 3D space uses an array of physical microphones, preferably disposed evenly across a room to provide even sound coverage throughout the room. At least one processor coupled to the physical microphones does not form beams, but instead preferably forms 1000's of virtual microphone bubbles within the room. By determining the processing gains of the sound signals sourced at each of the bubbles, the location(s) of the sound source(s) in the room can be determined. This system provides not only sound improvement by focusing on the sound source(s), but with the advantage that a desired sound source can be focused on more effectively (rather than steered to) while un-focusing undesired sound sources (like reverb and noise) instead of rejecting out of beam signals. This provides a full three dimensional location and a more natural presentation of each sound within the room.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: August 27, 2019
    Assignee: Nureva, Inc.
    Inventor: Grant Howard McGibney
  • Patent number: 10397722
    Abstract: Apparatus including a processor configured to: receive a spatial audio signal associated with a microphone array configured to provide spatial audio capture and at least one additional audio signal associated with an additional microphone, the at least one additional microphone signal having been delayed by a variable delay determined such that the audio signals are time aligned; receive a relative position between a first position associated with the microphone array and a second position associated with the additional microphone; generate at least two output audio channel signals by processing and mixing the spatial audio signal and the at least one additional audio signal based on the relative position between the first position and the second position such that the at least two output audio channel signals present an augmented audio scene.
    Type: Grant
    Filed: October 11, 2016
    Date of Patent: August 27, 2019
    Assignee: Nokia Technologies Oy
    Inventors: Antti Eronen, Jussi Leppanen, Arto Lehtiniemi, Matti Hamalainen, Sujeet Mate, Francesco Cricri, Mikko-Ville Laitinen, Mikko Tammi, Ville-Veikko Mattila
  • Patent number: 10397723
    Abstract: An apparatus, method, and system each of which obtains sound data based on a plurality of sound signals respectively output from a plurality of microphones, receives a user instruction for enhancing directivity of sensitivity characteristics of at least one of the plurality of microphones in a specific direction, and generates sound data having the directivity in the specific direction, based on the obtained sound data.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: August 27, 2019
    Assignee: Ricoh Company, Ltd.
    Inventor: Takafumi Okuma