Acoustical Noise Or Sound Cancellation Patents (Class 381/71.1)
  • Patent number: 11127414
    Abstract: A method of echo cancellation in hands-free communication is disclosed. The method includes: receiving, via a receive signal processor, a far-end audio signal; providing the far-end audio signal to: an acoustic echo canceller module as a reference signal, and at least one loudspeaker for playback; determining an external gain value associated with the far-end audio signal, the external gain applied to the far-end audio signal downstream of the receive signal processor and prior to playback from the at least one loudspeaker; adjusting at least one parameter of the acoustic echo canceller module based on the external gain value; receiving playback output of the far-end audio signal from the at least one loudspeaker as an input signal to a microphone; and processing the microphone input signal by the adjusted acoustic echo canceller module to produce an echo-cancelled signal.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: September 21, 2021
    Assignee: BlackBerry Limited
    Inventors: Mohammad Aamir Husain, Michael Andrew Percy, Mark Robert Every, Frank Linseisen
  • Patent number: 11128955
    Abstract: Improved audio processing management in a portable converged communication device is provided. A default mode of audio processing is provided where audio input to a microphone is routed and processed simultaneously to a plurality of different processors in parallel. The default mode is suspended in response to a keyword input to a microphone. The keyword is recognized by a speech recognition engine (ASR). The keyword enables audio processing through one of the plurality of processors while selectively suspending other audio processing through the other processors.
    Type: Grant
    Filed: September 15, 2020
    Date of Patent: September 21, 2021
    Assignee: MOTOROLA SOLUTIONS, INC.
    Inventors: Haohua Li, Keh Yong Teh, Jesus F Corretjer, Lian Kooi Ng
  • Patent number: 11127389
    Abstract: An active noise control unit generates a noise canceling sound of a single frequency that cancels engine sound heard by an occupant and outputs the noise canceling sound to a speaker through an amplifier. A second harmonic detector and a third harmonic detector detect a magnitude of a harmonic component of the noise canceling sound included in sound collected by a microphone. A controller controls a frequency of the noise canceling sound generated by the active noise control unit to a fundamental frequency of the engine sound based on a rotation frequency of the engine, and in addition, causes an output level control unit to control a level of the noise canceling sound to be output to the amplifier so that the level of the noise canceling sound becomes higher when the magnitude of the harmonic component exceeds a predetermined threshold value.
    Type: Grant
    Filed: December 16, 2020
    Date of Patent: September 21, 2021
    Assignee: ALPINE ELECTRONICS, INC.
    Inventor: Taku Sugai
  • Patent number: 11122157
    Abstract: A telecommunication device includes an audio signal transmission unit configured to receive an audio signal and to transmit the same to a further telecommunication device. The telecommunication device further includes a signaling unit configured to output a signaling when there is a concern that the audio signal is acoustically understandable for third parties or represents a disturbance for third parties. A further telecommunication device includes an audio signal receive unit configured to receive an audio signal from a further telecommunication device and to output the same acoustically, and a signaling unit configured to output a signaling when there is a concern that the output audio signal is acoustically understandable for third parties or represents a disturbance. The telecommunication devices may be interconnected in a system. Also described are corresponding methods for operation and a computer program.
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: September 14, 2021
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Jens Ekkehart Appell, Jan Rennies-Hochmuth
  • Patent number: 11115762
    Abstract: A hearing device configured to be worn at a head of a user. The hearing device includes a vibration sensor to detect a vibration conducted through the user's head to the hearing device and to output a vibration signal including information about the vibration. At least part of the vibration can be caused by an own voice activity of the user. A method of operating the hearing device allows a reliable own voice detection at rather low processing effort. The processor determines a presence of an own voice characteristic in the vibration signal at a vibration frequency associated with the own voice characteristic and identifies the own voice activity based on an identification criterion including the presence of the own voice characteristic in the vibration signal at the associated vibration frequency. The own voice characteristic indicative of part of the vibration can be caused by the own voice activity.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: September 7, 2021
    Assignee: SONOVA AG
    Inventors: Ullrich Sigwanz, Nadim El Guindi, Daniel Lucas-Hirtz, Nina Stumpf
  • Patent number: 11109166
    Abstract: A hearing device, e.g. a hearing aid, configured to play sound into an ear canal of a user, the hearing device comprising at least one input transducer (ITq) for picking up sound sq at said at least one input transducer from a sound field S around the hearing device and providing corresponding at least one electric input signal(s) INq representing said sound sq, i=1, . . .
    Type: Grant
    Filed: January 8, 2020
    Date of Patent: August 31, 2021
    Assignee: OTICON A/S
    Inventors: Jesper Jensen, Peter Sommer, Svend Oscar Petersen, Karsten Bo Rasmussen, Jan M. De Haan, Michael Syskind Pedersen
  • Patent number: 11095986
    Abstract: A vibration speaker includes: a housing; a diaphragm covering an open side of the housing and having a rim fixed to the housing; a vibration member installed in the housing to vibrate in a vibration direction of the diaphragm and having a magnet forming a magnetic field; a voice coil installed on an inner surface of the diaphragm and configured to vibrate the diaphragm through interaction with the vibration member; a solenoid driver fixed in the housing and configured to form the magnetic field that controls vibration of the vibration member; an amplifier configured to apply a first output signal to the voice coil and apply a second output signal having a phase different from the first output signal to the solenoid driver; and a controller configured to determine whether to apply the second output signal by comparing a frequency of the first output signal with the resonance frequency.
    Type: Grant
    Filed: September 22, 2020
    Date of Patent: August 17, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventor: Youngbeom Kim
  • Patent number: 11094323
    Abstract: An electronic device is disclosed. The electronic device comprises: multiple microphones for receiving audio signals generated by multiple sound sources; a communication unit for communicating with a voice recognition server; and a processor for determining the direction in which each of the multiple sound sources is located with reference to the electronic device, on the basis of the multiple audio signals received through the multiple microphones, determining at least one target sound source among the multiple sound sources on the basis of the duration of the determined direction of each of the sound sources, and controlling the communication unit such that the communication unit transmits, to the voice recognition server, an audio signal of a target sound source from which a predetermined voice is generated among the at least one target sound source.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: August 17, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ki-hoon Shin, Myung-suk Song, Jong-uk Yoo
  • Patent number: 11081128
    Abstract: A sound state estimating unit detects surrounding sound at a timing at which a notification to a destination user occurs. A user state estimating unit detects a position of the destination user and positions of users other than the destination user at the timing at which the notification occurs. An output control unit controls output of the notification to the destination user at a timing at which it is determined that the surrounding sound detected by the sound state estimating unit is masking possible sound which can be used for masking in a case where the position of the destination user detected by the user state estimating unit is within a predetermined area.
    Type: Grant
    Filed: April 12, 2018
    Date of Patent: August 3, 2021
    Assignee: SONY CORPORATION
    Inventors: Mari Saito, Hiro Iwase
  • Patent number: 11081096
    Abstract: A partial enclosure for inhibiting sound passing into and out of the partial enclosure includes an absorber-barrier or an absorber-barrier-absorber, each made from sound absorbing material and sound barrier material and arranged to form the partial enclosure. The enclosure also includes an adaptive frequency matched sound-masking system. The absorber-barrier or absorbed-barrier-absorber is positioned to block or inhibit unwanted sound from various positions of a source of the unwanted sound, or motion of the source of the unwanted sound. The adaptive frequency matched sound-masking system includes a sound generating device arranged on or in the partial enclosure to emit anti-noise signal to cancel or inhibit the unwanted sound.
    Type: Grant
    Filed: July 24, 2019
    Date of Patent: August 3, 2021
    Inventor: Bonnie S. Schnitta
  • Patent number: 11017791
    Abstract: Disclosed is a deep neural network-based method and apparatus for combining noise and echo removal. The deep neural network-based method for combining noise and echo removal according to one embodiment of the present invention may comprise the steps of extracting a feature vector from an audio signal that includes noise and echo; and acquiring a final audio signal from which both noise and echo have been removed, by using a combined nose and echo removal gain estimated by means of the feature vector and deep neural network DNN.
    Type: Grant
    Filed: April 2, 2018
    Date of Patent: May 25, 2021
    Assignee: Industry-University Cooperation Foundation Hanyang University
    Inventors: Joon-Hyuk Chang, Hyeji Seo
  • Patent number: 10978040
    Abstract: A device and method generate a sound masker to mask sound of the ambient environment. More specifically, spectral characteristics of sound in the ambient environment are determined, where the spectral characteristics are determined in terms of auditory excitation patterns. A database of pre-recorded sounds is searched to identify at least one pre-recorded sound that has spectral characteristics corresponding to the spectral characteristics of the sound in the ambient environment. At least a portion of the identified at least one pre-recorded sound is reproduced to mask the sound in the ambient environment.
    Type: Grant
    Filed: March 24, 2020
    Date of Patent: April 13, 2021
    Assignee: Sony Network Communications Europe B.V.
    Inventors: Peter Isberg, Kjell Krona, Anci Johansson, Richard Folke Tullberg
  • Patent number: 10957300
    Abstract: A system for reducing far-field noise produced by well operations includes a passive sound barrier shielding an area, in which the well operations are performed, in an open-air environment. The system further includes a sound sensor to receive near-field noise from the well operations. The system further includes an analysis module, coupled to the sound sensor, to generate an anti-noise signal. The system further includes active anti-noise generators, coupled to the analysis module, to generate anti-noise, based on the anti-noise signal, that destructively interferes with noise from the well operations outside of the passive sound barrier at a predetermined distance from the passive sound barrier. The analysis module generates the anti-noise signal based on the near-field noise, the predetermined distance, and adjustable positions and orientations of the active anti-noise generators.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: March 23, 2021
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Bryan J. Lewis, Kenneth R. Coffman, Bruce C. Lucas, Adam Marks, Tim H. Hunter
  • Patent number: 10955550
    Abstract: A motion-sensitive acoustic speaker may include a housing; a transmitter associated with the housing, a receiver associated with the housing, a interface component associated with the housing, and a processing device.
    Type: Grant
    Filed: December 9, 2019
    Date of Patent: March 23, 2021
    Assignee: TYMPHANY ACOUSTIC TECHNOLOGY (HUIZHOU) CO., LTD.
    Inventor: Alexey Abdulov
  • Patent number: 10945079
    Abstract: A hearing system is adapted to be worn by a user and configured to capture sound in an environment of the user and comprises a) a sensor array comprising M transducers for providing M electric input signals representing said sound and having a known geometrical configuration relative to each other; b) a detector unit for detecting movements over time of the hearing system, and providing location data of said sensor array at different points in time t, t=1, . . . , N; c) a first processor for receiving said electric input signals and—in case said sound comprises sound from a localized sound source S—for extracting sensor array configuration specific data ?ij of said sensor array indicative of differences between a time of arrival of sound from said localized sound source S at said respective input transducers, at said different points in time t, t=1, . . .
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: March 9, 2021
    Assignee: OTICON A/S
    Inventors: Martin Skoglund, Thomas Lunner, Fredrik Gustafsson
  • Patent number: 10937440
    Abstract: An information handling system audio system includes a library of noise reduction filters associated with cooling fan speeds to isolate out cooling fan noise. Changed cooling fan settings communicated to the audio system trigger application of a library noise reduction filter for the selected cooling fan setting to isolate out cooling fan noise while an adaptive filter defines a noise reduction filter from recorded sounds. The library noise reduction filter reduces cooling fan noises during the time used to determine the adaptive noise reduction filter. In one embodiment, changes in cooling fan settings prioritize definition of noise reduction filters by the adaptive filter.
    Type: Grant
    Filed: February 4, 2019
    Date of Patent: March 2, 2021
    Assignee: Dell Products L.P.
    Inventors: Chien-Yu Huang, Shih Chia-Hung, Chu Shu Hsuan
  • Patent number: 10917718
    Abstract: An audio signal processing apparatus for rendering an input audio signal is disclosed. The audio signal processing apparatus includes a receiving unit, which obtains a plurality of input audio signals corresponding to sounds collected by each of a plurality of sound collecting devices, a processor, which obtains an incidence direction for each frequency component for at least some frequency components of each of the plurality of input audio signals corresponding to a sound incident to each of the plurality of sound collecting devices based on cross-correlations between the plurality of input audio signals, and generates an output audio signal by rendering at least some of the plurality of input audio signals based on the incidence direction for each frequency component, and an output unit, which outputs the generated output audio signal.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: February 9, 2021
    Assignee: GAUDIO LAB, INC.
    Inventors: Jeonghun Seo, Sangbae Chon, Sewoon Jeon, Yonghyun Baek
  • Patent number: 10896665
    Abstract: A wireless earpiece includes a wireless earpiece housing, a processor disposed within the wireless earpiece housing, at least one microphone operatively connected to the processor, and at least one speaker operatively connected to the processor. The processor is configured to receive audio from the at least one microphone, perform processing of the audio to provide processed audio, and output the processed audio to the at least one speaker. The processing of the audio involves identifying body generated sounds generated by a body of a user of the wireless earpiece and removing the body generated sounds.
    Type: Grant
    Filed: August 13, 2018
    Date of Patent: January 19, 2021
    Assignee: BRAGI GmbH
    Inventor: Peter Vincent Boesen
  • Patent number: 10887697
    Abstract: A method for removing a target unwanted signal from multiple signals. The method includes: providing a set of input signals from external devices; separating the input signals into channels with the unwanted signal and channels without the unwanted signal; synchronizing the sets of input signals; and transferring the separated signal via wire or wirelessly to a sound reproduction device.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: January 5, 2021
    Assignee: INCUS COMPANY LIMITED
    Inventor: Jiangang Zhang
  • Patent number: 10880648
    Abstract: A loudspeaker assembly comprising: a first loudspeaker configured to receive a first electrical signal, and to produce sound along a first principal radiating axis based on the first electrical signal; a second loudspeaker configured to receive a second electrical signal, and to produce sound along a second principal radiating axis based on the second electrical signal; a third loudspeaker configured to receive a third electrical signal, and to produce sound along a third principal radiating axis based on the third electrical signal; and a control unit configured to produce each of the first, second and third electrical signals based on an input signal representative of audio. There is a first angular offset between the first and second principal radiating axes and a second angular offset between the first and third principal radiating axes.
    Type: Grant
    Filed: November 24, 2016
    Date of Patent: December 29, 2020
    Assignee: PSS BELGIUM NV
    Inventor: Stefan Willems
  • Patent number: 10847174
    Abstract: Voice responsive in-wall devices are provided. In one example implementation, a power switch includes a housing mountable on or at least partially within a surface. The housing can have a front panel. The power switch can include an interface element disposed on the front panel and operable to receive a user input. The power switch can include a power interrupter operable to control power delivery to the powered load based at least in part on interaction with the interface element. The power switch can include one or more microphones operable to obtain audio input. The power switch can include one or more speakers configured to provide audio output. The power switch can include a communications interface operable to communicate data associated with the audio input over a communication link.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: November 24, 2020
    Assignee: Hubbell Incorporated
    Inventors: Shawn Monteith, Michael Tetreault, Daniel Gould, Nicholas Kraus
  • Patent number: 10839309
    Abstract: A system and method for constructing training dictionaries with multichannel information. An exemplary method takes into account the effect of the acoustic path while training multichannel acoustic data. A method that uses different time-frequency resolutions in machine learning training is also presented.
    Type: Grant
    Filed: June 6, 2016
    Date of Patent: November 17, 2020
    Assignee: ACCUSONUS, INC.
    Inventors: Elias Kokkinis, Alexandros Tsilfidis, Michael Tzannes
  • Patent number: 10826464
    Abstract: Embodiments of the present invention provide a signal processing method and apparatus. The method includes: performing M-way filtering on an input signal to obtain M filtered signals, performing extraction on M filtered signals separately to obtain M extracted signals, performing fast Fourier transform (FFT) on the M extracted signals separately to obtain M frequency-domain signals, and finally determining output signals according to the M frequency-domain signals. According to the embodiments of the present invention, signal filtering and extraction are performed and then FFT is performed.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: November 3, 2020
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Liang Zhuang, Ganghua Yang, Wenliang Liang
  • Patent number: 10798479
    Abstract: An improved system and method for recognizing an audio signal due to physical activity and taking a predetermined action in response is disclosed. A “reverse noise signal” created by the sound pressure wave of the physical activity acting on the earpiece transducer is obtained. In some embodiments, an ambient noise signal is inverted and fed back, and the inverted signal is added to the intended audio signal being sent to the earpiece so that the ambient noise is cancelled. In other embodiments, a processor receives the ambient noise signal and predicts the modification to the intended audio signal needed to counteract the ambient noise. In other embodiments, the reverse noise signal may represent a motor or biological activity of a user; the system may take different actions in response to different physical activities, such as a heart beat of the user, or a tap, footfall, or swallowing by the user.
    Type: Grant
    Filed: November 3, 2019
    Date of Patent: October 6, 2020
    Assignee: ESS Technology, Inc.
    Inventors: A. Martin Mallinson, Robert Lynn Blair, Christian Leth Petersen, Paul Christopher Scowen
  • Patent number: 10752169
    Abstract: In a vehicle equipped with a vehicle sound system, determining a virtual fixed gear ratio; determining a virtual RPM based on the virtual fixed gear ratio; generating a set of harmonic signals based on the virtual RPM, the harmonic signals being sine-wave signals proportional to harmonics of the virtual RPM; processing the harmonic signals to produce a set of processed harmonic signals; and in the vehicle sound system, transducing the processed harmonic signals to acoustic energy thereby to produce an engine sound within a passenger cabin of the vehicle.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: August 25, 2020
    Assignee: Bose Corporation
    Inventors: Cristian Marius Hera, Ben J. Feng
  • Patent number: 10748520
    Abstract: The present disclosure relates to systems and methods for active sound management for vehicles. In one embodiment, a process for active sound management for a vehicle includes determining vehicle operation state and powertrain operation for the vehicle, and detecting sound generated by the powertrain operation of the vehicle. A synthesized sound may be determined for output based on selection of at least one frequency of the sound generated by the powertrain to drive a frequency of a sine-wave generator, synthesizing an output wave file with pitch shifting of frequency based on powertrain operation, and blending sine-wave generator output with the synthesized wave file to cancel unwanted powertrain noise and generate desired sounds for vehicles. Output of the synthesized sound may be controlled to provide simultaneous cancellation and synthesis in at least one same frequency range.
    Type: Grant
    Filed: April 8, 2019
    Date of Patent: August 18, 2020
    Assignee: HARMAN INTERNATIONAL INDUSTRIES, INCORPORATED
    Inventors: David Trumpy, Divya Sishtla Venkata, Santosh Adari, Kevin J Bastyr, Jens Dembinski, Nicolas Pelle, Prashanth Udumula
  • Patent number: 10748518
    Abstract: In an approach to adaptive sound masking, one or more computer processors analyze a surrounding of one or more users and stores in a database. The one or more computer processors receive a request from the one or more users for adaptive sound masking. The one or more computer processors analyzes a surrounding environment associated with the one or more users and storing a first information associated with the surrounding environment in a database. The one or more computer processors generate a cognitive sound mask base on the first information. The one or more computer processors produce a sound cone based on the cognitive sound mask and directing the sound cone at a distracting sound. The one or more computer processors adapt the sound cone based on changes to the surrounding environment.
    Type: Grant
    Filed: July 5, 2017
    Date of Patent: August 18, 2020
    Assignee: International Business Machines Corporation
    Inventors: Aaron K. Baughman, Diwesh Pandey, John P. Perrino, Todd R. Whitman
  • Patent number: 10748550
    Abstract: A method, apparatus and computer program including: obtaining a spatial audio signal from a plurality of microphones; dividing the obtained spatial audio signal into at least a first component and a second component; applying a first audio signal optimizing system to the first component and applying a second audio signal optimizing system to the second component; and enabling a signal including the optimized components to be provided to a speaker for rendering.
    Type: Grant
    Filed: March 20, 2017
    Date of Patent: August 18, 2020
    Assignee: Nokia Technologies Oy
    Inventors: Miikka Vilermo, Toni Makinen, Lasse Laaksonen, Anssi Ramo
  • Patent number: 10733971
    Abstract: [Object] To provide a sound processing device capable of effectively reducing ambient noise at low cost. [Solution] Provided is a sound processing device including: a first sound collector configured to collect a first noise signal from a noise source of noise leaking into a casing mounted to a user's ear; a first signal processing unit configured to form a first noise reduction signal used to reduce noise at a cancellation point on the basis of the first noise signal; a second signal processing unit configured to form a second noise reduction signal used to reduce noise at a cancellation point with respect to a first pseudo noise signal; an adder configured to add the first noise reduction signal and the second noise reduction signal; and a sound emitter configured to emit an output of the adder into the casing as sound.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: August 4, 2020
    Assignee: Sony Corporation
    Inventors: Shigetoshi Hayashi, Kohei Asada, Tetsunori Itabashi, Kazuma Yoshii, Mitsuhiro Suzuki, Shinpei Tsuchiya, Yushi Yamabe
  • Patent number: 10715250
    Abstract: An example system includes non-transitory machine-readable storage storing calibration data sets. A calibration data set includes parameter values that vary non-linearly. Each of the calibration data sets is temperature-specific. The example system also includes channels over which signals pass to and from units under test (UUTs). A channel includes input circuitry to receive a signal of the signals and to obtain a first parameter based on the signal; and correction circuitry to obtain a second parameter based on the first parameter and based on the calibration data set. The second parameter includes a calibrated version of the first parameter. The calibration data set is selectable based on temperature.
    Type: Grant
    Filed: May 1, 2017
    Date of Patent: July 14, 2020
    Assignee: TERADYNE, INC.
    Inventors: Tushar K. Gohel, Frank L. Booth, Jr., John G. Silletto
  • Patent number: 10713000
    Abstract: Apparatus and methods for processing an audio signal. The apparatus may include a digital signal processor (“DSP”) configured to receive an audio signal from a vehicular audio signal line. The audio signal may include a flat component and a compensatory component. The flat component may correspond to the audio signal in a state before combination with the compensatory component. The compensatory component may include an OEM EQ component. The apparatus may include a microprocessor in electronic communication with the DSP. The microprocessor may be configured to retrieve from the memory a restorative signal component. The microprocessor may be configured to instruct the DSP to apply the restorative signal component to the audio signal to reduce the audio signal to the flat component.
    Type: Grant
    Filed: May 1, 2018
    Date of Patent: July 14, 2020
    Assignee: AAMP of Florida, Inc.
    Inventors: Nathaniel Lee Wincek, Michael Lake
  • Patent number: 10714073
    Abstract: Active noise cancellation (ANC) systems and methods include a reference sensor to sense external noise and generate a reference signal, an error sensor to sense noise in a noise cancellation zone and generate an error signal, a feedforward ANC subsystem to receive the reference and error signals and generate a first anti-noise signal to cancel external noise in a noise cancellation zone, a feedback ANC subsystem to receive the error signal and generate a second anti-noise signal to cancel the external noise in the cancellation zone, a wind detector to detect whether wind noise is present in the reference signal and output a wind noise detection status, and wind handler to control adaptation processing of the feedforward ANC subsystem and the feedback ANC subsystem in accordance with the wind noise detection status and mixing of the first and second anti-noise signals to generate an output anti-noise signal.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: July 14, 2020
    Assignee: SYNAPTICS INCORPORATED
    Inventors: Liyang Rui, Govind Kannan
  • Patent number: 10706868
    Abstract: Methods and systems provide dynamic selection of noise-cancelling algorithms, and dynamic activation and deactivation of microphones to provide multi-mode noise cancellation for a voice-detecting headset in situations where ambient noise prevents voice navigation from accurately interpreting voice commands. To do so, when an ambient noise is detected that exceeds a threshold, a particular noise-cancelling algorithm best-suited for the situation is selected, and one or more noise-detecting microphones is activated. The noise-detecting microphone(s) receiving the highest level of ambient noise can remain activated while the remaining noise-detecting microphones can be deactivated. A speech signal received by the speech microphone can then be optimized by cancelling the ambient noise signal received from the activated noise-detecting microphone(s) using the selected noise-cancelling algorithm. After the speech signal is optimized, it can be communicated to the voice-detecting headset for interpretation.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: July 7, 2020
    Assignee: REALWEAR, INC.
    Inventors: Sanjay Subir Jhawar, Christopher Iain Parkinson, Kenneth Lustig
  • Patent number: 10699690
    Abstract: Active noise control system and methods are disclosed that include generating anti-noise that is configured to reduce or cancel noise occurring at a listening position in the ambiance of a seat with a backrest enclosing a hollow volume. Radiating the anti-noise from within the hollow volume of the backrest of the seat.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: June 30, 2020
    Assignee: Harman Becker Automotive Systems GmbH
    Inventors: Markus Christoph, Paul Zukowski
  • Patent number: 10685638
    Abstract: An apparatus comprising an audio detector configured to analyse a first audio signal to determine at least one audio source, wherein the first audio signal is generated from the sound-field in the environment of the apparatus; an audio generator configured to generate at least one further audio source; and a mixer configured to mix the at least one audio source and the at least one further audio source such that the at least one further audio source is associated with the at least one audio source.
    Type: Grant
    Filed: January 8, 2019
    Date of Patent: June 16, 2020
    Assignee: NOKIA TECHNOLOGIES OY
    Inventors: Kari Juhani Jarvinen, Antti Eronen, Juha Henrik Arrasvuori, Roope Olavi Jarvinen, Miikka Vilermo
  • Patent number: 10685639
    Abstract: Systems and methods are provided for an active noise cancellation system which employs a combination of an active noise cancellation techniques and predictive state estimation to generate destructive interference audio signals that are propagated by an interior surface of a room to counteract urban noises in an exterior environment of the room.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: June 16, 2020
    Inventor: Theodore Tzanetos
  • Patent number: 10685663
    Abstract: A method includes accessing, by at least one processing device, an audible signal including at least one in-ear microphone audible signal and at least one external microphone audible signal and at least one noise signal; training a generative network to generate an enhanced external microphone signal from an in-ear microphone signal based on the at least one in-ear microphone audible signal and the at least one external microphone audible signal; and outputting the generative network.
    Type: Grant
    Filed: April 18, 2018
    Date of Patent: June 16, 2020
    Assignee: Nokia Technologies Oy
    Inventors: Asta Maria Karkkainen, Leo Mikko Johannes Karkkainen, Mikko Honkala, Sampo Vesa
  • Patent number: 10687159
    Abstract: In a noise reduction device that generates and outputs a control sound signal for reducing noise, an internal loop control unit controls an internal loop in which a pre-output control sound signal that is acquired from a control sound output unit before output to a speaker is input to a sound receiver. A measurement unit measures an input level of a microphone sound signal and an input level of the pre-output control sound signal that has been input to the sound receiver in the internal loop. A fault detector uses the input level of the microphone sound signal and the input level of the pre-output control sound signal measured by the measurement unit to detect a fault in any one of the microphone, the sound receiver, the speaker, and the control sound output unit. A transmitter sends a result of fault detection performed by the fault detector to a management device.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: June 16, 2020
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Takahiro Yamaguchi, Toshihiro Ezaki, Kenichi Kubota, Masaru Matsuoka, Yuji Suzuki, Junji Araki, Shinichi Takayama
  • Patent number: 10669783
    Abstract: A system including a rig site with at least one pollution control system located on the rig site. The pollution control system is configured to modify an output of light, noise, or vibrations from the rig site to an environment surrounding the rig site. Additionally, the pollution control system may include at least one active noise cancellation device, at least one active vibration cancellation device, and/or at least one active light control system to modify the light, noise, or vibrations.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: June 2, 2020
    Assignee: Schlumberger Technology Corporation
    Inventor: Alejandro Camacho Cardenas
  • Patent number: 10665220
    Abstract: Technology described in this document can be embodied in a method that includes receiving a first input signal captured by at least a first feedforward microphone associated with an active noise reduction (ANR) device, receiving a second input signal captured by at least a second feedforward microphone associated with the ANR device, processing the first input signal using a first filter disposed in a first ANR signal flow path to generate a first output signal for an acoustic transducer of the ANR device, processing the second input signal using a second filter disposed in a second ANR signal flow path to generate a second output signal for the acoustic transducer, in which the second filter is different from the first filter, and generating a combined signal for the acoustic transducer based on combining the first output signal with the second output signal.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: May 26, 2020
    Assignee: Bose Corporation
    Inventor: Ole Mattis Nielsen
  • Patent number: 10667034
    Abstract: [Object] To allow a listener to listen to ambient sounds of the external environment in an appropriate manner while wearing a head mounted acoustic device.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: May 26, 2020
    Assignee: Sony Corporation
    Inventors: Kohei Asada, Yushi Yamabe, Shigetoshi Hayashi
  • Patent number: 10652649
    Abstract: An improved system and method for reducing the ambient noise experienced by a user listening to an earpiece without the use of a microphone is disclosed. An “ambient noise signal” created by the sound pressure wave of the ambient noise acting on the earpiece transducer is obtained. In some embodiments, the ambient noise signal is inverted and fed back, and the inverted signal is added to the intended audio signal being sent to the earpiece so that the ambient noise is cancelled. In other embodiments, a processor receives the ambient noise signal and predicts the modification to the intended audio signal needed to counteract the ambient noise. The ambient noise signal may be obtained by comparing the actual signal across the earpiece transducer to the intended audio signal, or by detecting variations in the current across the transducer from the current generated to drive the transducer.
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: May 12, 2020
    Assignee: ESS Technology, Inc.
    Inventors: A. Martin Mallinson, Robert Lynn Blair, Christian Leth Petersen, Paul Christopher Scowen
  • Patent number: 10638248
    Abstract: An audio system is configured to present a modified audio experience that reduces the degradation of a target audio experience presented to a user by the audio system. The audio system includes an acoustic sensor array, a controller, and a playback device array. To generate the modified audio experience, the acoustic sensor array receives the sound waves from one or more non-target audio source(s) causing the degradation, identifies the audio source(s), determines the spatial location of the audio source(s), determines the type of the audio source(s) and generates audio instructions that, when executed by the playback device array, present the modified audio experience to the user. The modified audio experience may perform active noise cancelling, ambient sound masking, and/or neutral sound masking to compensate for the sound waves received from non-target audio sources. The audio system may be part of a headset that can produce an artificial reality environment.
    Type: Grant
    Filed: January 29, 2019
    Date of Patent: April 28, 2020
    Assignee: Facebook Technologies, LLC
    Inventors: Peter Harty Dodds, Tetsuro Oishi, Philip Robinson
  • Patent number: 10631088
    Abstract: The specification and drawings present a use of multiple microphones for increasing acoustic sensing capabilities by processing acoustic signals from the multiple microphones in outdoor luminaire mounted surveillance/sensor systems. For example, various embodiments presented herein describe signal processing means to utilize stereo/multiple microphones in a luminaire (such as an outdoor roadway luminaire) to provide enhanced information regarding the surroundings of the luminaire. The multiple microphone luminaire sensor processing system can provide a more environmentally robust and sensitive approach which can be, for example, resistant to environmental noise such as a wind noise, as well as capable of isolating specific sounds from the surroundings, e.g., in specific directions.
    Type: Grant
    Filed: November 25, 2018
    Date of Patent: April 21, 2020
    Assignee: Current Lighting Solutions, LLC
    Inventors: Koushik Babi Saha, Thomas Clynne, Jonathan Robert Meyer
  • Patent number: 10631078
    Abstract: A headset includes a first sound receiving circuit, a second sound receiving circuit, an adaptive circuit, a first synthesis circuit, and a second synthesis circuit. The adaptive circuit is configured to: obtain a first direction of arrival and a second direction of arrival according to a first sound signal and a second sound signal; obtain a first conversion function and a second conversion function according to the first direction of arrival and the second direction of arrival; obtain a first feed forward audio signal according to the first conversion function and the first sound signal; and obtain a second feed forward audio signal according to the second conversion function and the second sound signal.
    Type: Grant
    Filed: October 12, 2018
    Date of Patent: April 21, 2020
    Assignee: REALTEK SEMICONDUCTOR CORP.
    Inventor: Wei-Hung He
  • Patent number: 10602268
    Abstract: Systems and methods for optimizing network microphone devices using noise classification are disclosed herein. In one example, individual microphones of a network microphone device (NMD) detect sound. The sound data is analyzed to detect a trigger event such as a wake word. Metadata associated with the sound data is captured in a lookback buffer of the NMD. After detecting the trigger event, the metadata is analyzed to classify noise in the sound data. Based on the classified noise, at least one performance parameter of the NMD is modified.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: March 24, 2020
    Assignee: Sonos, Inc.
    Inventor: Kurt Thomas Soto
  • Patent number: 10600432
    Abstract: A system configured to perform power normalization for voice enhancement. The system may identify active intervals corresponding to voice activity and may selectively amplify the active intervals in order to generate output audio data at a near uniform loudness. The system may determine a variable gain for each of the active intervals based on a desired output loudness and a flatness value, which indicates how much a signal envelope is to be modified. For example, a low flatness value corresponds to no modification, with peak active interval values corresponding to the desired output loudness and lower active intervals being lower than the desired output loudness. In contrast, a high flatness value corresponds to extensive modification, with peak active interval values and lower active interval values both corresponding to the desired output loudness. Thus, individual words may share the same peak power level.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: March 24, 2020
    Assignee: Amazon Technologies, Inc.
    Inventors: Wai Chung Chu, Carlo Murgia, Hyeong Cheol Kim
  • Patent number: 10567872
    Abstract: The present technology relates to a locally silenced sound field forming apparatus and method capable of controlling a silenced area in a depth direction. The locally silenced sound field forming apparatus includes a first speaker array that outputs a sound on the basis of a first speaker drive signal to form a predetermined sound field, and a second speaker array arranged at a position different from the position of the first speaker array and that outputs a sound on the basis of a second speaker drive signal to form a sound field that cancels the predetermined sound field. The present technology can be applied to a locally silenced sound field forming apparatus.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: February 18, 2020
    Assignee: SONY CORPORATION
    Inventors: Yu Maeno, Yuhki Mitsufuji
  • Patent number: 10554214
    Abstract: A non-linearity evaluation circuit for use with a signal generator having at least a partly non-linear operation. The non-linearity evaluation circuit may include a detection unit operable to detect a given amplitude attribute in a target signal generated by the signal generator, a time position of the amplitude attribute in the target signal defining a time location of a snapshot time window relative to the target signal, a part of the target signal occupying the snapshot time window being a corresponding signal snapshot, and a presence of the given amplitude attribute indicating that the signal snapshot includes noise due to the non-linear operation of the signal generator. The non-linearity evaluation circuit may further include a controller operable to analyse the signal snapshot rather than a larger part of the target signal and to evaluate the non-linear characteristics of the operation of the signal generator based on the analysis.
    Type: Grant
    Filed: January 9, 2019
    Date of Patent: February 4, 2020
    Assignee: SOCIONEXT INC.
    Inventors: Niklas Linkewitsch, Charles Joseph Dedic
  • Patent number: 10546581
    Abstract: An echo cancellation system that synchronizes output audio data with input audio data in a heterogeneous system. The system may append a most recent outgoing audio data frame to an incoming audio data frame to synchronize a receiving buffer with a transmission buffer. By synchronizing the receiving buffer with the transmission buffer, the incoming audio data frames may be associated with corresponding outgoing audio data frames. After synchronizing the incoming audio data frames and the outgoing audio data frames, the system may perform Acoustic Echo Cancellation by removing the outgoing audio data frames from the incoming audio data frames.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: January 28, 2020
    Assignee: AMAZON TECHNOLOGIES, INC.
    Inventor: Pushkaraksha Gejji