Directive Circuits For Microphones Patents (Class 381/92)
  • Patent number: 11006207
    Abstract: A method for substantially eliminating the effect of mechanical vibration on an audio input to a speakerphone system is provided herein, the method comprising: receiving mechanical vibrations and an input sound acoustic signal at a microphone (mic); converting the received mechanical vibrations and input sound acoustic signal into an input sound electrical signal, and outputting the same as a mic output signal; receiving mechanical vibrations at a mechanical vibration sensor (MVS); converting the received mechanical vibrations into a mechanical vibration error signal, and outputting the same as an MVS output signal; and generating a speakerphone system output signal by subtracting the MVS output signal from the mic output signal.
    Type: Grant
    Filed: September 16, 2019
    Date of Patent: May 11, 2021
    Assignee: Crestron Electronics, Inc.
    Inventors: Alexander Marra, Mark Hrozenchik
  • Patent number: 10999427
    Abstract: An electronic device executes a method that displays a location to a called party where a voice of a calling party will localize as binaural sound in a telephone call. The method displays an image representing the called party and an image representing the calling party with respect to each other so the called party can visually determine where the voice of the calling party will externally localize as the binaural sound.
    Type: Grant
    Filed: January 16, 2017
    Date of Patent: May 4, 2021
    Inventors: Philip Scott Lyren, Glen A. Norris
  • Patent number: 10991367
    Abstract: A voice activated assistant activation prevention system includes a database storing audio source information describing a relative location of an audio source. The system is configured to monitor, using at least one microphone, for an activation command that is associated with a recording of a subsequent instruction command and a sending that subsequent instruction command through a network. When the system detects, using first audio information received by the at least one microphone, a first instance of the activation command, it determines a source location of the first instance of the activation command. If the system matches the source location of the first instance of the activation command to the relative location of the audio source described by the audio source information in the database, the system may prevent the sending though the network of an instruction command that immediately follows the first instance of the activation command.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: April 27, 2021
    Assignee: PAYPAL, INC.
    Inventor: Norihiro Edwin Aoki
  • Patent number: 10992984
    Abstract: A method and apparatus for generating a stream of images representing a sequence of events related to a system. The apparatus defines a field view of a user from a 3D location within an enclosed area. The apparatus comprises a network interface module for receiving, from a first data source, the sequence of events related to the system, the sequence of events comprising actions of the user performed on one or more tangible instruments of the system, and for receiving, from a second data source, images related to at least a portion of the enclosed area within the field of view of the user. The apparatus further comprises an image generator module for determining a virtual camera position in the enclosed area from the 3D location, and for rendering the stream of images from the virtual camera position to produce a rendered stream of images.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: April 27, 2021
    Assignee: CAE Inc.
    Inventors: Alexander Ireland, Jack Russ, David Bowness
  • Patent number: 10986437
    Abstract: A beamformer system isolates a desired direction of an audio signal received from a first microphone array disposed on a first plane of the system and a second microphone array disposed on a second plane of the system. A spatial covariance matrix (SCM) defines the spatial covariance between pairs of microphones. A diagonal of the SCM is varied based on the placement of the microphones; values corresponding to one microphone array are increased, and values corresponding to the other microphone array are decreased.
    Type: Grant
    Filed: June 21, 2018
    Date of Patent: April 20, 2021
    Assignee: Amazon Technologies, Inc.
    Inventors: Guangdong Pan, Chad Jackman, Wontak Kim
  • Patent number: 10979805
    Abstract: A method and apparatus for auto-directive adaptive beamforming for a microphone array using microelectromechanical systems (MEMS) sensor orientation information are provided. The microphone array captures audio and the MEMS sensor detects an orientation of the microphone array. A direction of arrival of a source signal is estimated based on the data representative of the audio. A change in an orientation of the microphone array is detected based on the orientation and the direction of arrival is compensates based on the change in the orientation of the microphone array. The apparatus pre-steers a beam of a beam pattern of the microphone array based on the compensated direction of arrival to retain the source signal in a broadside of the microphone array and performs adaptive wideband beamforming to null one or more interfering sources in the beam pattern while retaining the source signal in the broadside of the microphone array.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: April 13, 2021
    Assignees: STMicroelectronics, Inc., STMicroelectronics International N.V.
    Inventors: Mahesh Chowdhary, Prasanth Logaraman, Arun Kumar, Rajendar Bahl
  • Patent number: 10979838
    Abstract: A system reduces power consumption by optimizing a selection of acoustic sensors of a sensor array based on environmental parameters of a local area. The system includes the sensor array including the acoustic sensors configured to detect sound in a local area, and processing circuitry. The processing circuitry is configured to: determine an environmental parameter of the local area; determine a performance metric for the sensor array; determine a selection of a subset of acoustic sensors from the acoustic sensors of the sensor array that satisfies the performance metric based on the environmental parameter of the local area; and process audio data from the subset of the acoustic sensors of the sensor array.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: April 13, 2021
    Assignee: Facebook Technologies, LLC
    Inventors: Jacob Ryan Donley, Andrew Lovitt
  • Patent number: 10979236
    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: January 17, 2020
    Date of Patent: April 13, 2021
    Assignee: Facebook Technologies, LLC
    Inventors: Andrew Lovitt, Antonio John Miller, Philip Robinson, Scott Selfon
  • Patent number: 10964193
    Abstract: In accordance with an embodiment, a system includes an audio signal analyzer configured to receive one or more audio microphone signals, and configured to determine a first pattern matching result by determining whether the one or more microphone signals include at least one audio pattern of one or more predefined audio patterns. Moreover, the system includes an air pressure signal analyzer configured to receive an air pressure change signal indicating an air pressure change, or configured to receive an air pressure signal indicating a current air pressure. The air pressure signal analyzer is configured to determine a second pattern matching result by determining whether the air pressure signal or the air pressure change signal includes at least one pressure sensor pattern. Furthermore, the system comprises an evaluator configured to indicate, depending on the first pattern matching result and depending second pattern matching result that a predefined event occurred.
    Type: Grant
    Filed: May 22, 2019
    Date of Patent: March 30, 2021
    Assignee: INFINEON TECHNOLOGIES AG
    Inventors: Christian Mandl, Waldemar Marsetz
  • Patent number: 10957338
    Abstract: Audio processing systems and methods comprise an audio sensor array configured to receive a multichannel audio input and generate a corresponding multichannel audio signal and a target activity detector configured to identify audio target sources in the multichannel audio signal. The target activity detector includes a VAD, an instantaneous locations component configured to detect a location of a plurality of audio sources, a dominant locations component configured to selectively buffer a subset of the plurality of audio sources comprising dominant audio sources, a source tracker configured to track locations of the dominant audio sources over time, and a dominance selection component configured to select the dominant target sources for further audio processing. The instantaneous location component computes a discrete spatial map comprising the location of the plurality of audio sources, and the dominant location component selects N of the dominant sources from the discrete spatial map for source tracking.
    Type: Grant
    Filed: May 16, 2019
    Date of Patent: March 23, 2021
    Assignee: SYNAPTICS INCORPORATED
    Inventors: Francesco Nesta, Saeed Mosayyebpour Kaskari, Dror Givon
  • Patent number: 10951984
    Abstract: A mixing device includes: processing units each provided for a set of two microphones, each processing unit being configured to process acoustic signals output by the corresponding set of two microphones to output a first acoustic signal and a second acoustic signal; a first adding units configured to add up the first acoustic signals; and a second adding unit configured to add up the second acoustic signals. Each processing unit processes the acoustic signals output by the corresponding set of two microphones, based on a scaling factor that determines a scaling up/down rate of a sound field, a shift factor that determines a shift amount of the sound field, and attenuation factors that determine attenuation amounts of the acoustic signals output by the microphones.
    Type: Grant
    Filed: January 22, 2020
    Date of Patent: March 16, 2021
    Assignee: KDDI CORPORATION
    Inventor: Toshiharu Horiuchi
  • Patent number: 10951982
    Abstract: A signal processing apparatus includes one or more processors. The processors acquire a plurality of observed signals acquired from a plurality of microphone groups each including at least one microphone selected from a plurality of microphones. The microphone groups include respective microphone combinations each including at least one microphone, the combinations are different from each other, and at least one of the microphone groups includes a plurality of microphones. The processors estimate a mask indicating occupancy for each of time frequency points of a sound signal of a space corresponding to the observed signal in a plurality of spaces, for each of the observed signals. The processors integrate masks estimated for the observed signals to generate an integrated mask indicating occupancy for each of time frequency points of a sound signal in a space determined based on the spaces.
    Type: Grant
    Filed: August 19, 2019
    Date of Patent: March 16, 2021
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Daichi Hayakawa, Takehiko Kagoshima, Hiroshi Fujimura
  • Patent number: 10951981
    Abstract: An Nth order linear differential microphone array (LDMA) including at most M microphones, where M is greater than N, is constructed by identifying a number K of combinations of at least (N+1) of the M microphones. A target cost function is specified based on at least one of a directivity factor, a beampattern, or a white noise gain associated with the LDMA. For each frequency band of a plurality of frequency bands: an optimal combination of microphones, from the K combinations, is determined based on an evaluation of the target cost function for the band and beamforming is performed using the determined optimal combination for the band. A union of the optimal combinations of microphones for the plurality of bands may be determined and the LDMA may be constructed, using microphones in the union, based on an evaluation of the target cost function across the plurality of bands.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: March 16, 2021
    Assignee: Northwestern Polyteclmical University
    Inventors: Jingdong Chen, Jilu Jin, Gongping Huang
  • Patent number: 10945080
    Abstract: An audio analysis and processing system with a processor configured with an audio array input thread connected to a plurality of audio input channels each corresponding to an audio input sensor. An audio input sensor may be positionally related to a position of other audio input sensors and a source input thread may be configured to be connected to a microphone audio input channel. An audio output thread may be configured to be connected to a speaker output channel and a beamformer thread may be responsive to the audio array input thread. A beam analysis and selection thread may be connected to an output of the beamformer thread and a mixer thread may have a first input connected to an output of the source input thread and a second input connected to an output of the beam analysis and selection thread and may have an output connected to the audio output thread. The audio input channel may be connected to the personal communication device.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: March 9, 2021
    Inventors: Benjamin D. Benattar, Alexander Khusidman, Christopher A. Magner, Oya Gumustop Yuksel
  • Patent number: 10930304
    Abstract: A method and an apparatus for processing voice are provided. The method is applied to a decision-making device in communication with a distributed microphone array and the distributed microphone array comprises a plurality of sub-arrays. The method comprises: obtaining, for each sub-array, an awakening voice signal received by each microphone of the sub-array; determining, for each sub-array, a frequency domain signal corresponding to each awakening voice signal of the sub-array, and a first cross-correlation function between every two frequency domain signals; determining an awakened sub-array based on each first cross-correlation function for each sub-array.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: February 23, 2021
    Assignee: Beijing Xiaomi Mobile Software Co., Ltd.
    Inventors: Zhao Wang, Lingsong Zhou
  • Patent number: 10932042
    Abstract: A conversation assist apparatus for a vehicle that includes a plurality of microphones and a plurality of electric loudspeakers, each microphone of the plurality of microphones and each electric loudspeaker of the plurality of loudspeakers being arranged so as to correspond to a seat of four seats arranged in a rectangular manner in a passenger compartment of the vehicle includes a signal processor configured to generate an audio signal by adding a delay to an output signal of a microphone of the plurality of microphones; a supplier configured to supply the generated audio signal to an electric loudspeaker of the plurality of electric loudspeakers that corresponds to a diagonal seat, from among the four seats, that is located at a diagonal position of a seat corresponding to the microphone; and a controller configured to control an amount of the delay based on a state of the vehicle.
    Type: Grant
    Filed: June 8, 2020
    Date of Patent: February 23, 2021
    Assignee: YAMAHA CORPORATION
    Inventors: Katsuya Hirano, Tsuyoshi Okami
  • Patent number: 10924846
    Abstract: A system and method for generating a self-steering beamformer is provided. Embodiments may include receiving, at one or more microphones, a first audio signal and adapting one or more blocking filters based upon, at least in part, the first audio signal. Embodiments may also include generating, using the one or more blocking filters, one or more noise reference signals. Embodiments may further include providing the one or more noise reference signals to an adaptive interference canceller to reduce a beamformer output power level.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: February 16, 2021
    Assignee: Nuance Communications, Inc.
    Inventors: Tobias Wolff, Markus Buck
  • Patent number: 10924850
    Abstract: An apparatus configured to: determine a viewing angle associated with at least one apparatus camera; determine from at least two audio signals at least one audio source orientation relative to an apparatus; and generate at least one spatial filter including at least a first orientation range associated with the viewing angle and a second orientation range relative to the apparatus.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: February 16, 2021
    Assignee: Nokia Technologies Oy
    Inventors: Lasse Juhani Laaksonen, Kemal Ugur, Pushkar Prasad Patwardhan, Adriana Vasilache, Jari Mathias Hagqvist
  • Patent number: 10924847
    Abstract: Embodiments relate to a microphone that functions as either a digital wireless microphone or a wired passive microphone. The microphone may comprise: a microphone transducer; an analog to digital converter (ADC) coupled to the microphone transducer to convert an analog audio signal from the microphone transducer to a digital audio signal; an antenna coupled to the ADC; and an analog connector coupled to the microphone transducer. In a wireless mode, the antenna transmits the digital audio signal to a digital receiver. Alternatively, in a wired mode, a cable that is coupled to the analog connector transmits the analog audio signal without requiring any power.
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: February 16, 2021
    Assignee: Yamaha Guitar Group, Inc.
    Inventor: Marcus Ryle
  • Patent number: 10924873
    Abstract: A method of configuring lighting fixture microphones includes receiving, by a processor circuit, an electrical audio signal from a first microphone. The method further includes determining, by the processor circuit, whether the first microphone is defective based on the electrical audio signal. The method also includes enabling, by the processor circuit, a second microphone in response to determining that the first microphone is defective.
    Type: Grant
    Filed: May 22, 2019
    Date of Patent: February 16, 2021
    Assignee: SIGNIFY HOLDING B.V.
    Inventor: Pengseng Tan
  • Patent number: 10917720
    Abstract: A sound source localization device includes an acquisition unit configured to acquire acoustic signals of M channels (M is an integer equal to or greater than one), a phase difference information calculator configured to perform a short-time Fourier transform on the acoustic signals of M channels and to convert a time domain into a frequency domain including phase information, and an estimator configured to input phase information of the acoustic signals subjected to the short-time Fourier transform to a deep learning machine and to perform sound source localization of the acoustic signals using the deep learning machine where input follows a von Mises distribution.
    Type: Grant
    Filed: February 20, 2020
    Date of Patent: February 9, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Kazuhiro Nakadai, Shungo Masaki, Ryosuke Kojima, Osamu Sugiyama, Katsutoshi Itoyama, Kenji Nishida
  • Patent number: 10917714
    Abstract: A spatial audio recording device includes: a plurality of directional vibrating bodies arranged such that at least one of the plurality of directional vibrating bodies selectively reacts according to a direction of input audio; a non-directional vibrating body configured to react regardless of the direction of the input audio; a read-out circuit configured to output a directional audio signal including a plurality of channels based on reactions of the directional vibrating bodies and a non-directional audio signal based on a reaction of the non-directional vibrating body; and a processor configured to correct the directional audio signal based on the non-directional audio signal.
    Type: Grant
    Filed: May 6, 2019
    Date of Patent: February 9, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hyeokki Hong, Sungchan Kang, Cheheung Kim, Yongseop Yoon, Choongho Rhee
  • Patent number: 10904660
    Abstract: An electronic device includes a plurality of microphones, a memory configured to store a plurality of instructions, and a processor operatively connected to the plurality of microphones and the memory. The plurality of instructions cause the electronic device to recognize connection of the plurality of microphones to the electronic device and obtain connection information for the plurality of microphones.
    Type: Grant
    Filed: January 6, 2020
    Date of Patent: January 26, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Younhyung Choi, Yunguk Lee, Jungjae Lee, Seungnyun Kim, Yongsang Yun
  • Patent number: 10896666
    Abstract: One embodiment provides a method, including: receiving, at a device employing two or more audio capture devices, an audio signal; determining a distance between two of the two or more audio capture devices capturing the audio signal; and reducing, using a noise cancellation technique employing the determined distance, an amount of unwanted noise from the audio signal. Other aspects are described and claimed.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: January 19, 2021
    Assignee: Lenovo (Singapore) Pte. Ltd.
    Inventors: John Weldon Nicholson, Howard Locker, Daryl Cromer
  • Patent number: 10897665
    Abstract: A method of decreasing the effect of an interference sound is disclosed and includes the following the steps: receiving an input sound by a first microphone and a second microphone to respectively acquire a first sound signal and a second sound signal; determining and acquiring a plurality of sound source position data according to a phase difference between a plurality of sound frames of at least one position low-frequency sound signal of the first sound signal and a plurality of sound frames of at least one position low-frequency sound signal of the second sound signal; determining a probability that a main direction of the input sound is in accordance with a target orientation according to each of the sound source position data; and adjusting, according to the probability, the sound volume of low-frequency sound signals of the first sound signal and the second sound signal being outputted.
    Type: Grant
    Filed: May 2, 2019
    Date of Patent: January 19, 2021
    Assignee: PIXART IMAGING INC.
    Inventors: Kuo-Wei Kao, Yu-Chieh Huang, Po-Jui Wu, Kuo-Ping Yang
  • Patent number: 10891957
    Abstract: In one example, a method includes receiving audio data generated by one or more microphones of a computing device, the audio data representing a spoken utterance; identifying, based on the audio data, a user that provided the spoken utterance; identifying, based on the audio data, an automation action associated with one or more automation devices, the automation action corresponding to the spoken utterance; determining whether the identified user is authorized to cause performance of the identified automation action; and responsive to determining that the identified user is authorized to cause performance of the identified automation action, causing the one or more automation devices to perform the identified automation action.
    Type: Grant
    Filed: October 7, 2019
    Date of Patent: January 12, 2021
    Assignee: GOOGLE LLC
    Inventors: Yuzhao Ni, David Roy Schairer
  • Patent number: 10887448
    Abstract: An electronic device processes a voice of a calling party with head-related transfer functions (HRTFs) during a telephone call. A display displays an image representing the calling party with respect to an image representing the called party at a location obtained from coordinates of the HRTFs such that the display shows where the voice of the calling party will externally localize as binaural sound to the called party when the called party answers the telephone call.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: January 5, 2021
    Inventors: Philip Scott Lyren, Glen A. Norris
  • Patent number: 10887691
    Abstract: An audio capture apparatus comprises a microphone array (301) and a beamformer (303) arranged to generate a beamformed audio output signal and a noise reference signal. A first and second transformer (309, 311) generates a first and second frequency domain signal from a frequency transform of the beamformed audio output signal and noise reference signal respectively. A difference processor (313) generates time frequency tile difference measures which for a given frequency is indicative of a difference between a monotonic function of a norm (magnitude) of a time frequency tile value of the first frequency domain signal and a monotonic function of a norm of a time frequency tile value of the second frequency domain signal for the first frequency. An estimator (315) generates an estimate indicative of whether the audio output signal comprises a point audio source in response to a combined difference value for time frequency tile difference measures for frequencies above a frequency threshold.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: January 5, 2021
    Assignee: Koninklijke Philips N.V.
    Inventors: Cornelis Pieter Janse, Patrick Kechichian
  • Patent number: 10887703
    Abstract: A hearing system comprises a first hearing device, e.g. a hearing aid. The hearing system comprises at least three input transducers, one of which being selected as a reference input transducer providing a reference input signal, at least two adaptive 2-channel beamformers, each providing a spatially filtered signal based on first and second beamformer-input signals, wherein the adaptive 2-channel beamformers maintain unit amplitude and phase for a target component of said reference input signal. The at least two 2-channel beamformers are coupled in a layered structure at least comprising a primary layer and a secondary layer. The adaptive parameter of a given 2-channel beamformer is determined from the first and second beamformer-input signals for the 2-channel beamformer in question.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: January 5, 2021
    Assignee: OTICON A/S
    Inventors: Eleni Koutrouli, Michael Syskind Pedersen, Jesper Jensen, Jan M. De Haan
  • Patent number: 10887449
    Abstract: A smartphone displays a real-time video of an environment of a first user. The smartphone receives a telephone call from a second user and displays, on the real-time video before the first user answers the telephone call, a virtual image at a location in the environment of the first user where a voice of the second user will externally localize in empty space outside the head of the first user in the environment when the first user answers the telephone call.
    Type: Grant
    Filed: August 31, 2019
    Date of Patent: January 5, 2021
    Inventors: Philip Scott Lyren, Glen A. Norris
  • Patent number: 10869139
    Abstract: A hearing aid device is provided. The hearing aid device at least includes a neckband and a first microphone. The neckband is worn on a neck of a user. The neckband defines a virtual datum plane and a first virtual plane parallel to each other, wherein the virtual datum plane overlaps a coronal plane of the user when the neckband is worn by the user, and a skin portion, furthest from the virtual datum plane, of a throat of the user is located on the first virtual plane. The first virtual plane is distant from the virtual datum plane by the first distance. The first microphone is disposed on the neckband, and is distant from the virtual datum plane by the second distance, wherein the second distance is less than the first distance.
    Type: Grant
    Filed: July 18, 2019
    Date of Patent: December 15, 2020
    Assignee: Merry Electronics(Shenzhen) Co., Ltd.
    Inventors: Kuan-Ling Chiu, Hung-Yue Chang
  • Patent number: 10866937
    Abstract: The present disclosure relates to apparatus, systems, and methods for providing a location information analytics mechanism. The location information analytics mechanism is configured to analyze location information to extract contextual information (e.g., profile) about a mobile device or a user of a mobile device, collectively referred to as a target entity. The location information analytics mechanism can include analyzing location data points associated with a target entity to determine features associated with the target entity, and using the features to predict attributes associated with the target entity. The set of predicted attributes can form a profile of the target entity.
    Type: Grant
    Filed: January 30, 2020
    Date of Patent: December 15, 2020
    Assignee: Factual Inc.
    Inventors: Tyler Bell, Bill Michels, Spencer Tipping, Tom White, Boris Shimanovsky
  • Patent number: 10867619
    Abstract: Processing sound received by a device can include receiving a first signal from a first microphone of the device and a second signal from a second microphone of the device, where the first and second microphones capture sounds from a sound field. A ratio between the acoustic pressure and the particle velocity of the sound field can be calculated. In response to the ratio exceeding a threshold, speech signal processing is performed on one or more of the microphone signals. Other aspects are also described and claimed.
    Type: Grant
    Filed: October 3, 2018
    Date of Patent: December 15, 2020
    Assignee: APPLE INC.
    Inventor: Martin Kuster
  • Patent number: 10869122
    Abstract: An apparatus is configured to rest on a wearer's neck or shoulders, and has a first microphone positioned at a first position located on the right side of the wearer, when the apparatus is worn, and a second microphone positioned at a second position located on the left side of the wearer. A processor receives audio signals output by the first and second microphones, and compares the audio signals from the first microphone to the audio signals from the second microphone. Based on the comparison, the processor determines whether the wearer's head is rotated to the right, left, or center, during an instance of the user speaking. Based on the determination, the processor selects a first one of at least two audio signal destinations, and provides the audio signal from at least one of the microphones to the first selected audio signal destination.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: December 15, 2020
    Assignee: Bose Corporation
    Inventors: William Henry Arthur Voigt, Darren Abrams, William D. Rice, Pelham Norville, Noah Stupak, John Trotter
  • Patent number: 10863261
    Abstract: A wearable device and a portable apparatus are provided. The wearable device includes two wireless earphones each including a speaker, a sound receiver for receiving sound from a peripheral object, and a signal converting circuit that is electrically coupled to the sound receiver and is configured to convert input signal from the sound receiver into a target spectrogram. The two spectrograms from the signal converting circuits have a time/phase difference, and at least one wireless earphone includes a storage unit and a judging circuit that is electrically coupled to the storage unit, the two signal converting circuits, and the two speakers. The judging circuit is configured to compare any target spectrogram with basic spectrograms of the storage unit so as to determine which kind of objects the peripheral object is, and is configured to obtain an instant position of the peripheral object by the time/phase difference.
    Type: Grant
    Filed: February 27, 2020
    Date of Patent: December 8, 2020
    Assignee: PIXART IMAGING INC.
    Inventors: Shih-Feng Chen, Yen-Min Chang
  • Patent number: 10863271
    Abstract: An acoustic signal processing device includes an acoustic signal processing unit configured to calculate a spectrum of each acoustic signal and a steering vector having m elements on the basis of m acoustic signals converted into m digital signals by sampling m analog signals representing sounds collected by m microphones (m is an integer of 1 or more and M or less, and M is an integer of 2 or more), and to estimate a sampling frequency ?m in the sampling on the basis of the spectrum, the steering vector, and a sampling frequency ?ideal that is a predetermined value.
    Type: Grant
    Filed: August 28, 2019
    Date of Patent: December 8, 2020
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Katsutoshi Itoyama, Kazuhiro Nakadai
  • Patent number: 10863296
    Abstract: A system configured to detect microphone failure and optimize settings using remaining functional microphones. For example, a device may detect a defective (e.g., nonfunctional or malfunctioning) microphone when an energy level for the defective microphone is lower than a threshold value for a period of time. After detecting the defective microphone, the device may update configuration settings by reassigning microphones (e.g., selecting a functional microphone instead of the defective microphone) and/or by calculating new configuration settings accordingly (e.g., excluding a nonfunctional microphone or compensating for an attenuation or phase shift of a malfunctioning microphone). For example, the system may recalculate beamformer coefficients using the remaining microphones, which may improve a performance of the device (e.g., wakeword detection, automatic speech recognition (ASR), etc.) and result in only a marginal performance degradation relative to fully-functioning microphones.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: December 8, 2020
    Assignee: Amazon Technologies, Inc.
    Inventors: Balaji Nagendran Thoshkahna, Trausti Thor Kristjansson
  • Patent number: 10856075
    Abstract: An apparatus including at least one processor and at least one memory including computer program code configured to: when the apparatus is in a voice phone call mode of sound capture, output a signal from a first microphone as a primary speech signal, and select one or more second microphones to output a noise reduction signal, where the apparatus comprises at least two of the second microphones, and where selection of the one or more second microphones is based at least partially upon a determined use of the apparatus being either a handportable or an integrated handsfree use; and/or when the apparatus is in a multi-media mode of sound capture select one or more of the microphones to output audio signals based upon both a determined type of sound capture feature being used by the apparatus and based upon a determined orientation of the apparatus.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: December 1, 2020
    Assignee: Nokia Technologies Oy
    Inventors: Antti Heikki Tapio Sassi, Jari Petteri Sjoberg, Ari Juhani Koski, Anu Huttunen, Mari Partio, Riitta Niemisto, Jukka Vartiainen, Ville Mikael Myllyla, Jorma Makinen, Tero Takala
  • Patent number: 10848889
    Abstract: Image analysis of a video signal is performed to produce first metadata, and audio analysis of a multi-channel sound track associated with the video signal is performed to produce second metadata. A number of time segments of the sound track are processed, wherein each time segment is processed by either (i) spatial filtering of the audio signals or (ii) spatial rendering of the audio signals, not both, wherein for each time segment a decision was made to select between the spatial filtering or the spatial rendering, in accordance with the first and second metadata. A mix of the processed sound track and the video signal is generated. Other embodiments are also described and claimed.
    Type: Grant
    Filed: January 4, 2019
    Date of Patent: November 24, 2020
    Assignee: APPLE INC.
    Inventors: Jonathan D. Sheaffer, Joshua D. Atkins, Martin E. Johnson, Stuart J. Wood
  • Patent number: 10847178
    Abstract: Systems and methods for suppressing noise and detecting voice input in a multi-channel audio signal captured by a plurality of microphones include (i) capturing a first audio signal via a first microphone and a second audio signal via a second microphone, wherein the first and second audio signals respectively comprises first and second noise content from a noise source; (ii) identifying the first noise content in the first audio signal; (iii) using the identified first noise content to determine an estimated noise content captured by the plurality of microphones; (iv) using the estimated noise content to suppress the first and second noise content in the first and second audio signals; (v) combining the suppressed first and second audio signals into a third audio signal; and (vi) determining that the third audio signal includes a voice input comprising a wake word.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: November 24, 2020
    Assignee: Sonos, Inc.
    Inventors: Saeed Bagheri Sereshki, Daniele Giacobello
  • Patent number: 10834516
    Abstract: A smartphone analyzes prior telephone calls and determines a familiar sound localization point (SLP). The smartphone processes a voice in a telephone call so the voice externally localizes to a user of the smartphone as binaural sound from the familiar SLP.
    Type: Grant
    Filed: August 31, 2019
    Date of Patent: November 10, 2020
    Inventors: Philip Scott Lyren, Glen A. Norris
  • Patent number: 10834514
    Abstract: An overlay network platform facilitates a multi-party conference. End users participate in the conference using client-based web browser software. According to this disclosure, an enhanced “audio” experience for a user participating in the conference is provided by rendering different participants' audio in the conference at different positions in a three-dimensional (3D) space. In operation, and given a set of audio streams that comprise the conference and that are being received, a three-dimensional (3D) position for each audio stream in a 3D soundscape is computed. In one embodiment, the 3D position for each audio stream is computed by identifying a target area region of space, and then determining the 3D position for each stream in the target area region of space. The relative 3D positions may be determined based on contextual information related to the content of an audio stream, as well as a computed “relevance” of one stream versus another.
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: November 10, 2020
    Assignee: Akamai Technologies, Inc.
    Inventors: Abhijit C. Mehta, Charles E. Gero, Thomas Houman
  • Patent number: 10834502
    Abstract: Mixing N information-time signals. The time signals are each converted into the frequency domain, into one of N complex information signals where N is an integer greater than 1. Spectral values of the N complex information signals which match in a frequency are each converted into a first and a second component. The N first components of the N frequency-matching spectral values are combined into a first combination component. The N second components of the N frequency-matching spectral values are combined into a second combination component. The first and second combination components are combined into a result spectral value. The above steps are also performed for other frequency-matching spectral values of the N complex information signals for generating other result spectral values. The result spectral values thus obtained are combined into a complex output information signal.
    Type: Grant
    Filed: April 10, 2018
    Date of Patent: November 10, 2020
    Assignee: Institut Fur Rundfunktechnik GMBH
    Inventor: Jens Groh
  • Patent number: 10825471
    Abstract: A system uses a voice energy detection (VED) circuit along with a capture buffer for improved performance and lower power dissipation. With a VED assigned to each microphone in the system, combing the output of more than one VED to improve the detection probability or reduce the false alarm rate improves the post detection signal-to-noise ratio. One or more VED circuits are dynamically selected based on background energy and detection performance. Further, a digital VED algorithm dynamically changes the oversampling ratio (OSR) values and passband bandwidth as a function of the loudness of the background noise and desired signal levels. If the desired signal or noise is strong, then the OSR is reduced to save power. If desired speech is detected, then the OSR value increases to get the target SNR for the remaining audio processing needs.
    Type: Grant
    Filed: April 2, 2018
    Date of Patent: November 3, 2020
    Assignee: AVAGO TECHNOLOGIES INTERNATIONAL SALES PTE. LIMITED
    Inventors: John Walley, Beng Huat Chua, VamshiKrishna Yakkala, Xin Jin
  • Patent number: 10825464
    Abstract: Example embodiments disclosed herein relate to audio signal processing. A method of processing an audio signal is disclosed. The method includes detecting, based on a power distribution of the audio signal, a type of content of a frame of the audio signal, generating a first gain based on a sound level of the frame for adjusting the sound level, processing the audio signal by applying the first gain to the frame; and in response to the type of content being detected to be a breath sound, generating a second gain for mitigating the breath sound and processing the audio signal by applying the second gain to the frame. Corresponding system and computer program product are also disclosed.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: November 3, 2020
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Dong Shi, David Gunawan, Glenn N. Dickins
  • Patent number: 10820120
    Abstract: An apparatus for identifying which sound sources are associated with which microphone audio signals, the apparatus including a processor configured to: determine/receive a position/orientation of at least one sound source relative to a microphone array; receive at least one microphone audio signal, each microphone audio signal received from a microphone; receive an audio-focussed audio signal from the microphone array, wherein the audio-focussed audio signal is directed from the microphone array towards the one of the at least one sound source so as to enhance the audio-focussed audio signal; compare the audio-focussed audio signal against each microphone audio signal to identify a match between one of the at least one microphone audio signal and the audio focussed audio signal; and associate the one of the at least one microphone with the at least one sound source, based on the identified match.
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: October 27, 2020
    Assignee: Nokia Technologies Oy
    Inventors: Jussi Leppanen, Antti Eronen, Francesco Cricri, Arto Lehtiniemi
  • Patent number: 10820172
    Abstract: A system and method determine the location of a device. The device collects sensor data using one or more sensors. Based on the sensor data, one or more localization models are selected from a plurality of localization models. The selected models are applied to generate one or more potential locations. The current location of the device is determined based on the one or more potential locations.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: October 27, 2020
    Assignee: Niantic, Inc.
    Inventors: Si ying Diana Hu, Anubhav Ashok, Peter Turner
  • Patent number: 10811026
    Abstract: It is possible to provide a noise suppression method, device, and program capable of realizing a sound image positioning of an output side corresponding to an input side with a small calculation amount. The device includes a common suppression coefficient calculation unit for receiving conversion outputs from a plurality of channels and calculating a suppression coefficient common to the channels.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: October 20, 2020
    Assignee: NEC CORPORATION
    Inventor: Akihiko Sugiyama
  • Patent number: 10812759
    Abstract: Systems and methods are described for determining orientation of an external audio device in a video conference, which may be used to provide congruent multimodal representation for a video conference. A camera of a video conferencing system may be used to detect a potential location of an external audio device within a room in which the video conferencing system is providing a video conference. Within the detected potential location, a visual pattern associated with the external audio device may be identified. Using the identified visual pattern, the video conferencing system may estimate an orientation of the external audio device, the orientation being used by the video conferencing system to provide spatial audio video congruence to a far end audience.
    Type: Grant
    Filed: July 22, 2019
    Date of Patent: October 20, 2020
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Erwin Goesnar, Hannes Muesch, David Gunawan, Michael Eckert, Glenn N. Dickins
  • Patent number: 10803882
    Abstract: A sound source separating apparatus may include: a housing; a plurality of microphones positioned on the housing; a plurality of sound guides positioned on the housing to be adjacent to the plurality of microphones, and configured to guide sound to the plurality of microphones and to generate a difference between a plurality of sound information respectively arriving at the plurality of microphones according to a direction of a sound source; and a processor configured to separate the sound source according to the direction of the sound source based on the plurality of sound information received by the plurality of microphones.
    Type: Grant
    Filed: August 21, 2019
    Date of Patent: October 13, 2020
    Assignee: Korea Institute of Science and Technology
    Inventors: Jae Wan Shim, Heon Phil Ha