Patents Examined by Kile O Blair
  • Patent number: 11727912
    Abstract: A system configured to perform deep adaptive acoustic echo cancellation (AEC) to improve audio processing. Due to mechanical noise and continuous echo path changes caused by movement of a device, echo signals are nonlinear and time-varying and not fully canceled by linear AEC processing alone. To improve echo cancellation, deep adaptive AEC processing integrates a deep neural network (DNN) and linear adaptive filtering to perform echo and/or noise removal. The DNN is configured to generate a nonlinear reference signal and step-size data, which the linear adaptive filtering uses to generate output audio data representing local speech. The DNN may generate the nonlinear reference signal by generating mask data that is applied to a microphone signal, such that the reference signal corresponds to a portion of the microphone signal that does not include near-end speech.
    Type: Grant
    Filed: March 29, 2022
    Date of Patent: August 15, 2023
    Assignee: Amazon Technologies, Inc.
    Inventors: Harsha Inna Kedage Rao, Srivatsan Kandadai, Minje Kim, Tarun Pruthi, Trausti Thor Kristjansson
  • Patent number: 11721316
    Abstract: A low-delay hybrid noise reduction system includes a reference audio receiving device, an error audio receiving device, an audio output device, and an audio processing device. The audio processing device includes a feedforward noise reduction filter module, a feedback noise reduction filter module, and a mixer. The feedforward noise reduction filter module includes a feedforward least mean squares (LMS) filter, a low-stage finite impulse response (FIR) filter, and 1st to Nth-stage biquad filters. The 1st to Nth-stage biquad filters is set on the input end of the low-stage finite impulse response filter to perform low-delay filtering on the reference source audio signal received and outputs to the low-stage FIR filter so as to output the feedforward noise reduction signal through the low-stage FIR filter.
    Type: Grant
    Filed: April 18, 2022
    Date of Patent: August 8, 2023
    Assignee: STEADYBEAT TECHNOLOGY CORP.
    Inventors: Hao Ming Chen, Ju Chieh Liu
  • Patent number: 11721315
    Abstract: The present invention relates to an active noise cancellation integrated circuit for stacking multiple anti-noise signals, an associated method, and an active noise cancellation headphone using the same. The method is applicable to an audio playback device with multiple ANC filtering units. The method includes: acquiring an anti-noise signal from an ANC filtering unit; generating a decoupled signal by processing the anti-noise signal with the transfer function of a physical channel and operations of other ANC filtering units; performing a signal superposition, wherein an anti-noise signal from another ANC filtering unit is superposed with the decoupled signal; and performing an audio playback based on the superposed signal and an audio signal such that noise is eliminated.
    Type: Grant
    Filed: March 21, 2022
    Date of Patent: August 8, 2023
    Assignee: AIROHA TECHNOLOGY CORP.
    Inventors: Chao-Ling Hsu, Li-Wen Chi, Kai-Sheng Chen
  • Patent number: 11716563
    Abstract: A loudspeaker system includes a subwoofer. The subwoofer includes a housing having a plurality of walls which together define an acoustic cavity. The plurality of walls includes a front wall, a rear wall, a top wall, a bottom wall, and a plurality of sidewalls extending between the top and bottom walls and between the front and rear walls. A first transducer mounted to the front wall of the housing. The first transducer includes a diaphragm having a major axis and a minor axis. The major axis has a fist end proximate the bottom wall and an opposite, second end proximate the top wall, such that the major axis is arranged vertical, relative to ground when the subwoofer is rested on its bottom wall. The top wall has a handle such that the loudspeaker can be carried with the major axis arranged vertical to ground.
    Type: Grant
    Filed: June 14, 2021
    Date of Patent: August 1, 2023
    Assignee: Bose Corporation
    Inventors: Greg J. Zastoupil, Peter P. Premo, Peter C. Santoro, Craig Small, Joseph J. Kutil, David Edwards Blore
  • Patent number: 11711265
    Abstract: Methods of managing audio data transmissions over a network disclosed herein may include the step of selecting a client device from a plurality of client devices as a participating device, each client device of the plurality of client devices being in data communication with a network. The methods may include the step of signaling the participating device over said network thereby initiating transmitting of audio data from the participating device at least in part over said network for live broadcasting, the audio data being indicative of a speaking voice being input into a participating device microphone of the participating device. The methods may include the step of minimizing latency in transmitting of the audio data by throttling data being communicated over said network by one or more client devices of the plurality of client devices only while the participating device is transmitting audio data over said network.
    Type: Grant
    Filed: January 27, 2022
    Date of Patent: July 25, 2023
    Inventors: William W. Sloan, Jr., Kenneth Nathaniel Sherman
  • Patent number: 11700498
    Abstract: The present invention provides for an analog audio patchbay comprising a first plurality of connectors capable of receiving a plurality analog electronic signals, a second plurality of connectors capable of transmitting a plurality of analog electronic signals, and a circuit board extending from the first plurality to the second plurality.
    Type: Grant
    Filed: July 6, 2022
    Date of Patent: July 11, 2023
    Assignee: FLOCK AUDIO INC.
    Inventors: Darren Nakonechny, Curtis Figley, Andrei Chichak
  • Patent number: 11699424
    Abstract: The present invention provides an improved noise separation hybrid type ANC system, which includes a reference audio receiving device, an error audio receiving device, an audio output device, and an audio processing device. The audio processing device includes a feed-forward noise cancellation filter module, a feedback noise cancellation filter module, a mixer, a noise shaper, a first infinite impulse response filter, and a second infinite impulse response filter. When the noise bandwidth detector detects irregular noise, it adjusts the coefficient of the first infinite impulse response filter to set it as a low-pass filter; when regular noise is detected, the coefficient of the second infinite impulse response filter is adjusted to set it as a band-pass filter.
    Type: Grant
    Filed: February 22, 2022
    Date of Patent: July 11, 2023
    Assignee: STEADYBEAT TECHNOLOGY CORP.
    Inventor: Hao-Ming Chen
  • Patent number: 11689837
    Abstract: The present disclosure relates to an open binaural earphone including a housing, at least one low-frequency speaker, and at least one high-frequency speaker. The housing may be placed on at least one of a head or an ear of a user and not blocking a user's ear canal, and configured to accommodate the at least one low-frequency speaker and the at least one high-frequency speaker. The at least one low-frequency speaker may be configured to output sounds within a first frequency range from at least two first sound guiding holes through at least two first guiding tubes. The at least one high-frequency speaker may be configured to output sounds within a second frequency range from at least two second sound guiding holes through at least two second guiding tubes. The second frequency range may include one or more frequencies higher than one or more frequencies in the first frequency range.
    Type: Grant
    Filed: May 14, 2021
    Date of Patent: June 27, 2023
    Assignee: SHENZHEN SHOKZ CO., LTD.
    Inventors: Lei Zhang, Junjiang Fu, Bingyan Yan, Fengyun Liao, Xin Qi
  • Patent number: 11683640
    Abstract: A speaker system including an enclosure, a first acoustic driver engaged with the enclosure, and two or more horns configured to output a sound from the first acoustic driver to a front plane of the enclosure. In one embodiment, the two or more horns may be folded and planar. In one embodiment, the speaker system may include a second acoustic driver, which may be installed above or below the first acoustic driver. The second acoustic driver may be larger or smaller or the same size when compared to the first acoustic driver.
    Type: Grant
    Filed: April 15, 2019
    Date of Patent: June 20, 2023
    Assignee: LOW COUNTRY HORNS, LLC
    Inventor: Mark Menendez
  • Patent number: 11678110
    Abstract: An electronic apparatus includes a housing having a sound receiving hole that guides a sound outside the housing into the housing, a substrate that is disposed in the housing and on which a microphone is mounted, an elastic member that is disposed so as to fill a gap between the substrate and an inner wall of the housing excluding a portion of the inner wall that is located around the sound receiving hole and so as to form a space between the substrate and the portion of the inner wall of the housing, which is located around the sound receiving hole, and a first member that is disposed so as to partially occupy the space.
    Type: Grant
    Filed: March 31, 2022
    Date of Patent: June 13, 2023
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Keita Morishita, Mitsunori Tanaka, Harutaka Uno, Daisuke Kuroda
  • Patent number: 11678098
    Abstract: The present disclosure provides an acoustic output apparatus including one or more status sensors, at least one low-frequency acoustic driver, at least one high-frequency acoustic driver, at least two first sound guiding holes, and at least two second sound guiding holes. The status sensors may detect status information of a user. The low-frequency acoustic driver may generate at least one first sound, a frequency of which is within a first frequency range. The high-frequency acoustic driver may generate at least one second sound, a frequency of which is within a second frequency range including at least one frequency exceeding the first frequency range. The first and second sound guiding holes may output the first and second spatial sound, respectively. The first and second sound may be generated based on the status information, and may simulate a target sound coming from at least one virtual direction with respect to the user.
    Type: Grant
    Filed: February 9, 2021
    Date of Patent: June 13, 2023
    Assignee: SHENZHEN SHOKZ CO., LTD.
    Inventors: Lei Zhang, Junjiang Fu, Bingyan Yan, Fengyun Liao, Xin Qi
  • Patent number: 11671737
    Abstract: The present disclosure relates to a pair of audio glasses. The pair of audio glasses may include a frame, one or more lenses, and one or more temples. The pair of audio glasses may further include at least one low-frequency acoustic driver, at least one high-frequency acoustic driver, and a controller. The at least one low-frequency acoustic driver may be configured to output sounds from at least two first guiding holes. The at least one high-frequency acoustic driver may be configured to output sounds from at least two second guiding holes. The controller may be configured to direct the low-frequency acoustic driver to output the sounds in a first frequency range and direct the high-frequency acoustic driver to output the sounds in a second frequency range. The second frequency range may include one or more frequencies higher than one or more frequencies in the first frequency range.
    Type: Grant
    Filed: April 7, 2021
    Date of Patent: June 6, 2023
    Assignee: SHENZHEN SHOKZ CO., LTD.
    Inventors: Lei Zhang, Junjiang Fu, Bingyan Yan, Fengyun Liao, Xin Qi
  • Patent number: 11671733
    Abstract: A sound output device includes a housing having an internal space, a battery mounting unit on which a battery for an electric tool is mounted, a tweeter at least part of which is disposed in the internal space, a woofer at least part of which is disposed in the internal space, and a partition member that partitions the internal space into a first space in which the tweeter is disposed and a second space in which the woofer is disposed.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: June 6, 2023
    Assignee: MAKITA CORPORATION
    Inventor: Kazunori Tsuge
  • Patent number: 11670277
    Abstract: In at least one embodiment, a system for providing a frequency dependent dynamic leakage for noise cancellation is provided. The system includes a noise cancellation controller and a current limiter. The noise cancellation controller is programmed to perform noise cancellation in a vehicle based on a limited input signal. The current limiter is programmed to receive a reference signal from one of an accelerometer or a loudspeaker and to convert the reference signal from a time domain and into a frequency domain to limit the reference signal. The current limiter is further programmed to generate the limited input signal in response to limiting the reference signal.
    Type: Grant
    Filed: November 30, 2021
    Date of Patent: June 6, 2023
    Assignee: Harman International Industries, Incorporated
    Inventors: Geon-Seok Kim, Rajeshkumar Venugopal, Tao Feng
  • Patent number: 11664002
    Abstract: An active noise control device includes a determination unit configured to determine whether an abnormality has occurred in an acceleration sensor based on a direct-current component of a reference signal acquired by the acceleration sensor attached to a vehicle, and a control unit configured to, when the determination unit determines that an abnormality has occurred in any of a plurality of the acceleration sensors, stop generation of the control signal based on the reference signal acquired by the acceleration sensor that has been determined to have the abnormality, and stop updating a filter coefficient of an adaptive filter configured to perform the filtering process on the reference signal acquired by the acceleration sensor that has been determined to have no abnormality.
    Type: Grant
    Filed: January 19, 2022
    Date of Patent: May 30, 2023
    Assignee: Honda Motor Co., Ltd.
    Inventor: Kosuke Sakamoto
  • Patent number: 11665462
    Abstract: A detachable headband for a headphone system can incorporate a headband identification circuit that stores or encodes a headband identification parameter value. When the headband becomes attached to an ear cup, the headband can transmit the headband identification parameter value to the ear cup.
    Type: Grant
    Filed: September 16, 2021
    Date of Patent: May 30, 2023
    Assignee: Apple Inc.
    Inventors: Jason Joseph LeBlanc, Rohan Gupta, Robert D. Zupke, Todd K. Moyer, Cuneyt Bakan, Brooke L. Bunney, Justin T. Ng, Jeff A. Kalt, Tian Shi Li, Lionel B. Barrow
  • Patent number: 11664006
    Abstract: A sound output device according to an embodiment includes: an acoustic path (70) and a microphone (100b). The acoustic path connects a first space (54b) formed on a front surface of a driver unit (106) and the outside of a housing (50b) including the driver unit separately from a second space (55b) formed on a back surface of the driver unit. The microphone is disposed in the vicinity of an opening where the acoustic path is connected to the outside of the housing.
    Type: Grant
    Filed: July 25, 2019
    Date of Patent: May 30, 2023
    Assignee: Sony Corporation
    Inventors: Yushi Yamabe, Naoki Shinmen, Kenichi Oide
  • Patent number: 11653169
    Abstract: A method plays sound clips in binaural sound to users during an electronic communication between two or more users. A processor convolves the sound clips with HRTFs so the sound externally localize away from a head of the user listening to the sound clip. The sound clips play to users during the electronic communication without transmitting the sound clips to electronic devices of the users.
    Type: Grant
    Filed: May 6, 2022
    Date of Patent: May 16, 2023
    Inventor: Philip Scott Lyren
  • Patent number: 11653141
    Abstract: Embodiments of active noise control (ANC) headphones and operating methods thereof are disclosed herein. In one example, a headphone includes a speaker, an internal microphone, and a processor. The speaker is configured to play an audio of interest based on an audio source signal. The internal microphone is configured to obtain a mixed audio signal including a noise signal and the audio of interest played by the speaker. The processor is configured to determine a first current system parameter of the headphone based on the mixed audio signal at a first time point, and determine if the first current system parameter of the headphone is higher than a predetermined threshold to determine if the headphone is worn by a user.
    Type: Grant
    Filed: October 28, 2022
    Date of Patent: May 16, 2023
    Assignee: BESTECHNIC (SHANGHAI) CO., LTD.
    Inventors: Weifeng Tong, Liang Zhang, Qian Li, Mingliang Xu
  • Patent number: 11647322
    Abstract: The present disclosure provides a TWS earphone communication method and system, and TWS earphones. The method includes: when an audio source sends a data packet and a main earphone correctly receives the data packet, the main earphone sends acknowledgment information in an acknowledgment information slot; when the data packet is incorrectly received by the main earphone, no information is sent in the acknowledgment information slot; and when the data packet is received correctly by a secondary earphone, the secondary earphone does not send any information in the acknowledgment information slot. When the data packet is not received correctly by the secondary earphone, it sends interference information in the acknowledgment information slot.
    Type: Grant
    Filed: June 22, 2021
    Date of Patent: May 9, 2023
    Assignees: VeriSilicon Microelectronics (Shanghai) Co., Ltd., VeriSilicon Holdings Co., Ltd.
    Inventors: Shuai Li, Maogang Li