Patents by Inventor Tetsuro Oishi

Tetsuro Oishi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 12047753
    Abstract: Systems and methods for three-dimensional beamforming disclosed herein include, among other features (i) generating a set of received-sound beams by applying a plurality of sets of beamforming coefficients stored in a tangible memory of the network device to sound received via a microphone array of the network device, wherein each received-sound beam corresponds to a separate direction relative to the microphone array, (ii) identifying a subset of the received-sound beams comprising speech content, (iii) for each received-sound beam in the subset of the received-sound beams comprising speech content, determining whether the speech content comprises a wake word, (iv) selecting one final received-sound beam from the received-sound beams in the subset of the received-sound beams determined to comprise a wake word; and (v) causing the selected one final received-sound beam to be processed to identify a voice command.
    Type: Grant
    Filed: December 28, 2020
    Date of Patent: July 23, 2024
    Assignee: Sonos, Inc.
    Inventors: Matthew Buoni, Romi Kadri, Tetsuro Oishi
  • Patent number: 12002483
    Abstract: The disclosure is generally directed to a system for reducing wind noise. A system includes one or more processors coupled to a non-transitory computer-readable storage medium having instructions encoded thereon that, when executed by the one or more processors, cause the one or more processors to obtain signals respectively generated from two or more microphones during a time period, the signals representing acoustic energy detected by the two or more microphones during the time period, determine a coherence between the signals, and determine a filter based on the coherence. The filter is configured to reduce wind noise in one or more of the signals.
    Type: Grant
    Filed: April 18, 2022
    Date of Patent: June 4, 2024
    Assignee: Meta Platforms Technologies, LLC
    Inventors: Gongqiang Yu, Michael Smedegaard, Tetsuro Oishi
  • Patent number: 11991506
    Abstract: Examples described herein involve configuring a playback device based on distortion, such as that caused by a barrier. One implementation may involve causing the playback device to play audio content according to an existing playback configuration, determining an existing frequency response of the playback device in a given system, and determining whether a difference between the existing frequency response of the playback device in the given system and a predetermined frequency response for the playback device is greater than a predetermined distortion threshold. If it is determined that the difference between the existing frequency response of the playback device and the predetermined frequency response for the playback device is greater than the predetermined distortion threshold, then the existing playback configuration of the playback device is changed to an updated playback configuration of the playback device and the playback device plays audio content according to the updated playback configuration.
    Type: Grant
    Filed: December 20, 2022
    Date of Patent: May 21, 2024
    Assignee: Sonos, Inc.
    Inventors: Tetsuro Oishi, William H. Bush
  • Publication number: 20240098407
    Abstract: A speaker assembly presents audio content to an ear canal of a user. A speaker of the speaker assembly generates positive and negative acoustic pressure waves. A first vent assembly of the speaker assembly ports the positive acoustic pressure waves to an entrance of the ear canal of the user, whereas a second vent assembly ports the negative acoustic pressure waves to an area behind a pinna of the user. The first and second vent assembly are configured to provide improved audio content playback to the user.
    Type: Application
    Filed: November 12, 2021
    Publication date: March 21, 2024
    Inventors: Tetsuro Oishi, Gelmont Rios, Alan Ng
  • Patent number: 11770670
    Abstract: The present disclosure relates to systems, methods, and non-transitory computer-readable media that present spatial audio using the speakers of a wearable audio device and speakers external to the wearable audio device. In particular, in one or more embodiments, the disclosed systems generate spatial audio having a high-frequency component and a low-frequency component. The disclosed systems further generate cross-talk cancellation filters for the low-frequency component of the spatial audio. The disclosed systems can provide the high-frequency component for presentation via speakers of the wearable audio device and the low-frequency component for presentation via the external speakers using the cross-talk cancellation filters. In some cases, the disclosed systems generate the spatial audio or the cross-talk cancellation filters using a personalized interaural display model and/or head-related transfer functions.
    Type: Grant
    Filed: January 13, 2022
    Date of Patent: September 26, 2023
    Assignee: Meta Platforms Technologies, LLC
    Inventors: Pablo Francisco Faundez Hoffmann, Tetsuro Oishi
  • Patent number: 11743640
    Abstract: An audio system includes a speaker and a processor. The processor determines a privacy setting for an audio signal. The privacy setting may be selected by a user. The privacy setting may indicate activation of a private mode, or may indicate a privacy level from a range of privacy levels. The processor determines an audio filter that adjusts the audio signal to mitigate sound leakage when presented by the speaker based on the privacy setting. The audio filter may include a low-pass filter and a multiband compressor. The parameters of the audio filter may vary based on the privacy setting. The processor applies the audio filter to the audio signal to generate a filtered audio signal and provides the filtered audio signal to the speaker.
    Type: Grant
    Filed: July 6, 2020
    Date of Patent: August 29, 2023
    Assignee: Meta Platforms Technologies, LLC
    Inventors: Tetsuro Oishi, Gelmont Rios
  • Patent number: 11743648
    Abstract: A headset includes a speaker, such as a side firing dipole speaker. The headset includes a front chamber that receives sound waves from a first side of the speaker and a rear chamber that receives sound waves from a second side of the speaker. A control leak channel connects the front chamber and the rear chamber. An acoustic mesh may be located within the control leak channel. The speaker configuration is configured to reduce total harmonic distortion of the speaker, particularly in ranges such as 3-6 kHz, while maintaining the broadband efficiency of the speaker.
    Type: Grant
    Filed: November 23, 2022
    Date of Patent: August 29, 2023
    Assignee: Meta Platforms Technologies, LLC
    Inventors: Tetsuro Oishi, Rex Pinegar Price, Limin Zhou, Michael Thomas Frank, Joshua James Barr, Michael Lee Butts
  • Patent number: 11711645
    Abstract: An audio system for a headset includes a plurality of speakers and an audio controller. The plurality of speakers may be in a dipole configuration that cancel sound leakage into a local area of the headset. The controller filters audio content presented by the plurality of speakers to further mitigate leakage of audio content into the local area. The audio determines sound filters based on environmental conditions, such as ambient noise levels, as well as based on the audio content being presented.
    Type: Grant
    Filed: November 22, 2021
    Date of Patent: July 25, 2023
    Assignee: Meta Platforms Technologies, LLC
    Inventor: Tetsuro Oishi
  • Publication number: 20230232175
    Abstract: Examples described herein involve configuring a playback device based on distortion, such as that caused by a barrier. One implementation may involve causing the playback device to play audio content according to an existing playback configuration, determining an existing frequency response of the playback device in a given system, and determining whether a difference between the existing frequency response of the playback device in the given system and a predetermined frequency response for the playback device is greater than a predetermined distortion threshold. If it is determined that the difference between the existing frequency response of the playback device and the predetermined frequency response for the playback device is greater than the predetermined distortion threshold, then the existing playback configuration of the playback device is changed to an updated playback configuration of the playback device and the playback device plays audio content according to the updated playback configuration.
    Type: Application
    Filed: December 20, 2022
    Publication date: July 20, 2023
    Inventors: Tetsuro Oishi, William H. Bush
  • Publication number: 20230224663
    Abstract: The present disclosure relates to systems, methods, and non-transitory computer-readable media that present spatial audio using the speakers of a wearable audio device and speakers external to the wearable audio device. In particular, in one or more embodiments, the disclosed systems generate spatial audio having a high-frequency component and a low-frequency component. The disclosed systems further generate cross-talk cancellation filters for the low-frequency component of the spatial audio. The disclosed systems can provide the high-frequency component for presentation via speakers of the wearable audio device and the low-frequency component for presentation via the external speakers using the cross-talk cancellation filters. In some cases, the disclosed systems generate the spatial audio or the cross-talk cancellation filters using a personalized interaural display model and/or head-related transfer functions.
    Type: Application
    Filed: January 13, 2022
    Publication date: July 13, 2023
    Inventors: Pablo Francisco Faundez Hoffmann, Tetsuro Oishi
  • Patent number: 11540055
    Abstract: A headset includes a speaker, such as a side firing dipole speaker. The headset includes a front chamber that receives sound waves from a first side of the speaker and a rear chamber that receives sound waves from a second side of the speaker. A control leak channel connects the front chamber and the rear chamber. An acoustic mesh may be located within the control leak channel. The speaker configuration is configured to reduce total harmonic distortion of the speaker, particularly in ranges such as 3-6 kHz, while maintaining the broadband efficiency of the speaker.
    Type: Grant
    Filed: July 22, 2021
    Date of Patent: December 27, 2022
    Assignee: Meta Platforms Technologies, LLC
    Inventors: Tetsuro Oishi, Rex Pinegar Price, Limin Zhou, Michael Thomas Frank, Joshua James Barr, Michael Lee Butts
  • Patent number: 11540073
    Abstract: Examples described herein involve configuring a playback device based on distortion, such as that caused by a barrier. One implementation may involve causing the playback device to play audio content according to an existing playback configuration, determining an existing frequency response of the playback device in a given system, and determining whether a difference between the existing frequency response of the playback device in the given system and a predetermined frequency response for the playback device is greater than a predetermined distortion threshold. If it is determined that the difference between the existing frequency response of the playback device and the predetermined frequency response for the playback device is greater than the predetermined distortion threshold, then the existing playback configuration of the playback device is changed to an updated playback configuration of the playback device and the playback device plays audio content according to the updated playback configuration.
    Type: Grant
    Filed: September 27, 2020
    Date of Patent: December 27, 2022
    Assignee: Sonos, Inc.
    Inventors: Tetsuro Oishi, William H Bush
  • Publication number: 20220321999
    Abstract: A dipole speaker assembly comprises a transducer section, a front volume section, and a rear volume section. The transducer section includes a frame and piezoelectric actuators coupled to the frame. The piezoelectric actuators are configured to generate an acoustic pressure wave. The transducer section includes a first side and a second side, the second side being opposite the first side. The front volume section is coupled to the first side to form a front cavity, the front volume section including an aperture from which the generated acoustic pressure wave exits the front volume section towards an ear canal of a user. The rear volume section is coupled to the second side to form a rear cavity. The generated acoustic pressure wave exiting the rear volume section cancels the generated acoustic pressure wave exiting the front volume section in the far field.
    Type: Application
    Filed: February 22, 2022
    Publication date: October 6, 2022
    Inventors: Chuming Zhao, John Raymond Brodie, Rex Pinegar Price, Michael Smedegaard, Antonio John Miller, Tetsuro Oishi
  • Publication number: 20220284913
    Abstract: The disclosure is generally directed to a system for reducing wind noise. A system includes one or more processors coupled to a non-transitory computer-readable storage medium having instructions encoded thereon that, when executed by the one or more processors, cause the one or more processors to obtain signals respectively generated from two or more microphones during a time period, the signals representing acoustic energy detected by the two or more microphones during the time period, determine a coherence between the signals, and determine a filter based on the coherence. The filter is configured to reduce wind noise in one or more of the signals.
    Type: Application
    Filed: April 18, 2022
    Publication date: September 8, 2022
    Inventors: Gongqiang Yu, Michael Smedegaard, Tetsuro Oishi
  • Publication number: 20220182772
    Abstract: Embodiments relate to an audio system for various artificial reality applications. The audio system performs large scale filter optimization for audio rendering, preserving spatial and intra-population characteristics using neural networks. Further, the audio system performs adaptive hearing enhancement-aware binaural rendering. The audio includes an in-ear device with an inertial measurement unit (IMU) and a camera. The camera captures image data of a local area, and the image data is used to correct for IMU drift. In some embodiments, the audio system calculates a transducer to ear response for an individual ear using an equalization prediction or acoustic simulation framework. Individual ear pressure fields as a function of frequency are generated. Frequency-dependent directivity patterns of the transducers are characterized in the free field. In some embodiments, the audio system includes a headset and one or more removable audio apparatuses for enhancing acoustic features of the headset.
    Type: Application
    Filed: February 22, 2022
    Publication date: June 9, 2022
    Inventors: Peter Harty Dodds, Nava K. Balsam, Vamsi Krishna Ithapu, William Owen Brimijoin, II, Samuel Clapp, Christi Miller, Michaela Warnecke, Nils Thomas Fritiof Lunner, Paul Thomas Calamia, Morteza Khaleghimeybodi, Pablo Francisco Faundez Hoffmann, Ravish Mehra, Salvael Ortega Estrada, Tetsuro Oishi
  • Patent number: 11308972
    Abstract: The disclosure is generally directed to a system for reducing wind noise. A system includes one or more processors coupled to a non-transitory computer-readable storage medium having instructions encoded thereon that, when executed by the one or more processors, cause the one or more processors to obtain signals respectively generated from two or more microphones during a time period, the signals representing acoustic energy detected by the two or more microphones during the time period, determine a coherence between the signals, and determine a filter based on the coherence. The filter is configured to reduce wind noise in one or more of the signals.
    Type: Grant
    Filed: May 11, 2020
    Date of Patent: April 19, 2022
    Assignee: FACEBOOK TECHNOLOGIES, LLC
    Inventors: Gongqiang Yu, Michael Smedegaard, Tetsuro Oishi
  • Patent number: 11310575
    Abstract: A grill cover that fits over or is positioned over high frequency acoustical regions and low frequency acoustical regions of a playback device. A portion of the grill cover that fits over or is positioned over a high frequency acoustical region has small area openings and a portion of the grill over a low frequency acoustical region has large area openings. In portions of the grill cover between the portions over high and low frequency acoustical regions, the openings may have an intermediate area to visually blur the differences between the portions of the grill covers. To further blur the differences, the differently sized openings may be interleaved.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: April 19, 2022
    Assignee: Sonos, Inc.
    Inventors: Youjin Nam, Nicholas Long, Tetsuro Oishi
  • Patent number: 11212606
    Abstract: An audio system for a headset includes a plurality of speakers and an audio controller. The plurality of speakers may be in a dipole configuration that cancel sound leakage into a local area of the headset. The controller filters audio content presented by the plurality of speakers to further mitigate leakage of audio content into the local area. The audio determines sound filters based on environmental conditions, such as ambient noise levels, as well as based on the audio content being presented.
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: December 28, 2021
    Assignee: Facebook Technologies, LLC
    Inventor: Tetsuro Oishi
  • Patent number: 11202145
    Abstract: A speaker assembly presents audio content to an ear canal of a user. A speaker of the speaker assembly generates positive and negative acoustic pressure waves. A first vent assembly of the speaker assembly ports the positive acoustic pressure waves to an entrance of the ear canal of the user, whereas a second vent assembly ports the negative acoustic pressure waves to an area behind a pinna of the user. The first and second vent assembly are configured to provide improved audio content playback to the user.
    Type: Grant
    Filed: December 8, 2020
    Date of Patent: December 14, 2021
    Assignee: Facebook Technologies, LLC
    Inventors: Tetsuro Oishi, Gelmont Rios, Alan Ng
  • Patent number: 11178481
    Abstract: An ear-plug assembly presents audio content to an ear canal of a user. The audio content may be based in part on sound in a local area surrounding the user. The ear-plug assembly detects, via one or more acoustic sensors, sound in the area around the user. The sound waves travel through an aperture in a body of the ear-plug assembly and are propagated to a waveguide to the one or more acoustic sensors. The ear-plug assembly processes the detected sound data in a controller, which instructs a speaker assembly to present audio content based in part on the detected sound data. The detected sounds may be amplified, attenuated, filtered, and/or augmented when presented by the speaker assembly.
    Type: Grant
    Filed: July 28, 2020
    Date of Patent: November 16, 2021
    Assignee: Facebook, Inc.
    Inventors: Tetsuro Oishi, Morteza Khaleghimeybodi, Pablo Francisco Faundez Hoffmann, Alan Ng, Antonio John Miller, Gongqiang Yu, Chuming Zhao