Having Automatic Equalizer Circuit Patents (Class 381/103)
  • Patent number: 10878797
    Abstract: A propagation delay identification system for active noise cancelation for a vehicle audio system may include at least one sensor configured to transmit sensor data indicative of acceleration data, hammer data and microphone data, at least one output sensor configured to transmit an impulse response, and a processor. The processor may be programmed to receive the sensor data and pulse function, identify a propagation path delay between the microphone data and a cross-correlation between the acceleration data and hammer data, and generate a source pulse function. The processor further identify a secondary path delay based on an arrival time of peak energy of a convolution of the impulse response and filtered pulse function, and apply a binary limiter to a reference signal in response to the secondary path delay exceeding the propagation path delay to reduce boosting of an audio signal based on coherent reference and error signals.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: December 29, 2020
    Assignee: Harman International Industries, Incorporated
    Inventors: Jonathan Wesley Christian, Kevin J. Bastyr
  • Patent number: 10853027
    Abstract: An example playback device is configured to receive a first stream of audio comprising source audio content to be played back by the playback device and record, via one or more microphones of the playback device, an audio signal output by the playback device based on the playback device playing the source audio content. The playback device is also configured to determine a transfer function between a frequency-domain representation of the first stream of audio and a frequency-domain representation of the recorded audio signal, and then determine an estimated frequency response of the playback device based on a difference between (i) the transfer function and (ii) a self-response of the playback device, where the self-response of the playback device is stored in a memory of the playback device. Based on the estimated frequency response, the playback device is configured to determine an acoustic calibration adjustment and implement the acoustic calibration adjustment.
    Type: Grant
    Filed: October 28, 2019
    Date of Patent: December 1, 2020
    Assignee: Sonos, Inc.
    Inventors: Shao-Fu Shih, Patrick McPherson
  • Patent number: 10853022
    Abstract: Example techniques relate to calibration interfaces that facilitate calibration of a playback device. An example implementation may involve displaying, on a graphical display, a sequence of control interfaces to guide calibration of a playback device during a calibration sequence comprising (i) a spatial calibration component and (ii) a spectral calibration component. Displaying the sequence of control interfaces includes displaying one or more spatial calibration interfaces comprising a guide to perform the spatial calibration component of the calibration sequence. The spatial calibration component involves calibration of the playback device for a particular location within an environment. Displaying the sequence of control interfaces also includes displaying one or more spectral calibration interfaces comprising a guide to perform the spectral calibration component of the calibration sequence. The spectral calibration component involves calibration of the playback device for the environment.
    Type: Grant
    Filed: August 2, 2019
    Date of Patent: December 1, 2020
    Assignee: Sonos, Inc.
    Inventors: Dayn Wilberding, Sein Woo
  • Patent number: 10848118
    Abstract: The present invention provides for methods and systems for digitally processing an audio signal to reproduce high quality sounds on various materials. In various embodiments, a method comprises filtering the signal with a low shelf filter and/or high shelf filter, passing the signal through a first compressor that, filtering the signal again with a low shelf filter and/or high shelf filter, processing the signal with a graphic equalizer based on a selected material profile, passing the signal through a second compressor, and outputting the signal to a transducer.
    Type: Grant
    Filed: April 14, 2020
    Date of Patent: November 24, 2020
    Assignee: BONGIOVI ACOUSTICS LLC
    Inventors: Anthony Bongiovi, Glenn Zelniker, Phillip Fuller, Ryan Copt
  • Patent number: 10841696
    Abstract: Playing back of a piece of multimedia sound content by means of the vibration of any radiating structure, produced by contact with a playback device comprising: a mechanical actuator applying vibratory excitation to the structure, from a source signal, corresponding to a multimedia sound signal, a sensor sensing a signal from the vibration of the radiating structure, in order to thus: supply the actuator with a source signal, of known frequency components, receive, from the sensor, a vibration signal from the radiating structure operated by the actuator, in order to obtain a frequency response from the radiating structure, correct the source signal supplied to the actuator, by applying a filter correcting the spectral response of the radiating structure such that this response, once corrected, has a flat spectral profile, with amplitude deviations at most of 5 dB, and supply the actuator with the source signal corrected in this way.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: November 17, 2020
    Assignee: HYVIBE
    Inventor: Adrien Mamou-Mani
  • Patent number: 10805754
    Abstract: The system and method includes positioning a mobile device with a built-in loudspeaker at a first location in a listening environment and at least one microphone at at least one second location in the listening environment; emitting test audio content from the loudspeaker of the mobile device at the first position in the listening environment; receiving the test audio content emitted by the loudspeaker using the at least one microphone at the at least one second location in the listening environment; and, based at least in part on the received test audio content, determining one or more adjustments to be applied to desired audio content before playback by at least one earphone; wherein the first location and the second location are distant from each other so that the at least one microphone is within the near-field of the loudspeaker.
    Type: Grant
    Filed: September 22, 2015
    Date of Patent: October 13, 2020
    Assignee: Harman Becker Automotive Systems GmbH
    Inventors: Markus Christoph, Sunish George J. Alumkal
  • Patent number: 10798484
    Abstract: Methods, apparatus, systems and articles of manufacture are disclosed for audio equalization based on variant selection. An example apparatus to generate equalization adjustments for an audio signal based on user input includes a user interface to prompt a user for the user input corresponding to a selected variant of music, and an input feature set generator to generate an equalization input feature set, the equalization input feature set to be used by a model executor to adjust at least one weight of a neural network model to generate example equalization adjustments for the audio signal based on the user input, the equalization input feature set generated by: generating a data structure corresponding to the user input, the data structure including a number of entries identifying the selected variant of music, and including the data structure in the equalization input feature set.
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: October 6, 2020
    Assignee: GRACENOTE, INC.
    Inventors: Robert Coover, Joseph Renner, Cameron A. Summers
  • Patent number: 10795637
    Abstract: When the volume is adjusted in a multi-speaker system, it is desirable that one speaker does not change volume disproportionately with respect to another speaker. A method is presented for adjusting a volume level of one or more speakers. Each speaker can have a non-standardized relationship between logical volume level that is input to the speaker and sound pressure level that is produced by the speaker. A selected volume level, corresponding to a sound pressure level, can be received via a user interface. A stored lookup table can be accessed to convert the sound pressure level to a first product-specific logical volume level for each speaker. The stored lookup table can tabulate the non-standardized relationship between logical volume level and sound pressure level for each speaker. Data corresponding to the first product-specific logical volume level can be transmitted to each speaker.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: October 6, 2020
    Assignee: DTS, Inc.
    Inventor: Dannie Lau
  • Patent number: 10778171
    Abstract: An equalization filter coefficient determinator continuously or quasi-continuously fades between a plurality of different equalizer settings in dependence on one or more setting parameters, to obtain a current set of equalization filter target coefficients describing a current equalizer setting. A number of setting parameters is smaller than a number of equalization filter target coefficients of current set of equalization filter target coefficients. An equalization filter coefficient determinator linearly combines a plurality of equalization filter target coefficient set components in dependence on one or more setting parameters. An equalization filter coefficient determinator obtains the current set of equalization filter target coefficients in dependence on position information obtained using a two-dimensional or three-dimensional user input device. An apparatus includes a user interface, an equalization filter coefficient determinator and an equalizer.
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: September 15, 2020
    Assignee: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
    Inventors: Felix Fleischmann, Jan Plogsties, Bernhard Neugebauer
  • Patent number: 10763812
    Abstract: Some embodiments of the invention are directed to enabling a user to easily identify the frequency range(s) at which sound masking occurs, and addressing the masking, if desired. In this respect, the extent to which a first stem is masked by one or more second stems in a frequency range may depend not only on the absolute value of the energy of the second stem(s) in the frequency range, but also on the relative energy of the first stem with respect to the second stem(s) in the frequency range. Accordingly, some embodiments are directed to modeling sound masking as a function of the energy of the stem being masked and of the relative energy of the masked stem with respect to the masking stem(s) in the frequency range, such as by modeling sound masking as loudness loss, a value indicative of the reduction in loudness of a stem of interest caused by the presence of one or more other stems in a frequency range.
    Type: Grant
    Filed: July 15, 2019
    Date of Patent: September 1, 2020
    Assignee: iZotope, Inc.
    Inventors: James McClellan, Gordon Wichern, Hannah Robertson, Aaron Wishnick, Alexey Lukin, Matthew Hines, Nicholas LaPenn
  • Patent number: 10750276
    Abstract: An apparatus includes a sensor for sensing an environment and a speaker. The apparatus also includes a display capable of displaying video information in multiple directions, wherein the display is configured to display video information in different directions based on information of an object sensed by the sensor. The speaker is configured to generate in multiple directions sound associated with the video information.
    Type: Grant
    Filed: January 17, 2018
    Date of Patent: August 18, 2020
    Assignee: SHANGHAI XIAOYI TECHNOLOGY CO., LTD.
    Inventor: Mingyong Tang
  • Patent number: 10734962
    Abstract: Provided are, among other things, systems, methods and techniques for loudness-based audio-signal compensation. According to one such system, an input line accepts an input audio signal; a loudness estimator, coupled to the input line, processes the input audio signal to obtain an audio playback loudness level and also provides a production loudness level for the input audio signal; and a filter generator/selector coupled to an output of the loudness estimator provides an audio compensation filter based on the production loudness level and the audio playback loudness level. The input signal is processed by the audio compensation filter to provide an output signal.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: August 4, 2020
    Assignee: Guoguang Electric Company Limited
    Inventor: Yuli You
  • Patent number: 10728663
    Abstract: A method for setting a filter frequency response includes: dividing a target frequency band into multiple first partial bands at a frequency corresponding to an intersection between a first line representative of a target spectrum envelope and a second line representative of a first spectrum envelope derived from smoothing a measured frequency spectrum; and setting a frequency response of a filter corresponding to a first partial band specified by an operator from among the multiple first partial bands, in accordance with a setting operation for setting an adjustment amount performed by the operator with respect to the specified first partial band.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: July 28, 2020
    Assignee: YAMAHA CORPORATION
    Inventors: Kenji Ishizuka, Kenichi Tamiya, Kazunobu Kondo, Toshifumi Kunimoto
  • Patent number: 10728661
    Abstract: The present disclosure relates to a car audio information transmitter, including: a main controller, an audio receiver, an audio, transforming module, a wireless transmitter, and a frequency adjustment module. The audio receiver connects to the main controller. The audio transforming module connects to the audio receiver and is configured to transform the audio signals. The wireless transmitter connects to the audio transforming module and is configured to transmit the transformed audio signals to a wireless receiver of a car. The frequency adjustment module connects to the audio transforming module and is configured to adjust a frequency of the audio signals. The car audio information transmitter is capable of accessing to the adjusting mode by one operation and adjusting an amplitude of the audio signals. As such, the complicated operations may be avoided, and the driving safety may be improved.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: July 28, 2020
    Assignee: SHENZHEN JIEMEISI INDUSTRIAL CO., LTD.
    Inventor: Xiufang Liu
  • Patent number: 10684819
    Abstract: A modular speaker system comprises a first speaker module; at least one second speaker module in communication with the first speaker module; and a controller that receives an instruction to selectively activate, reactivate, or inactivate the at least one second speaker module with respect to the first speaker module.
    Type: Grant
    Filed: April 19, 2019
    Date of Patent: June 16, 2020
    Assignee: BOSE CORPORATION
    Inventor: Lino Antony Pucci
  • Patent number: 10666217
    Abstract: A method for dynamic equalization is performed at a system. The system receives an electronic audio signal. The system monitors available headroom based on two or more of: an amplifier of the system, a change in volume of the system, characteristics of a transducer of a loudspeaker associated with the system, and the audio signal. Responsive to a change in the available headroom, the system modifies one or more parameters of an equalizer to at least a portion of the signal in order to extend a physical low-frequency response of the loudspeaker, the one or more parameters comprising a gain for the and a frequency.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: May 26, 2020
    Assignee: GOOGLE LLC
    Inventor: Gabriel Slotnick
  • Patent number: 10659889
    Abstract: A microphone package for providing a modified microphone signal includes a microphone and an equalizer device coupled to the microphone.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: May 19, 2020
    Assignee: Infineon Technologies AG
    Inventors: Dietmar Straeussnigg, Andreas Wiesbauer
  • Patent number: 10629218
    Abstract: A coding apparatus includes a processor and a memory that stores instructions, which when executed causes the processor to perform operations, including encoding a first band of an input audio signal to be a first spectrum and dividing the first spectrum into a plurality of sub-bands. The operations also include searching a largest amplitude value of the divided first spectrum in each of the plurality of sub-bands, and normalizing the divided first spectrum in each of the plurality of sub-bands. The operations further include emphasizing a harmonic structure in the normalized first spectrum, and searching a best band that has a largest correlation value between each divided band of a second band spectrum and the emphasized first spectrum in which the harmonic structure is emphasized, and encoding the second band spectrum using lag information identifying the best band and transmitting the lag information to a decoder side.
    Type: Grant
    Filed: March 1, 2019
    Date of Patent: April 21, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Takuya Kawashima, Katsunori Daimou, Masahiro Oshikiri
  • Patent number: 10623856
    Abstract: A method of providing audio information, said method comprising: (i) receiving audio filter settings in a client device; (ii) receiving audio data in the client device, wherein the received audio data is in an audio coding format; (iii) converting the audio filter settings to an audio filter signal in a processor of the client device, where the audio filter signal is a time-varying signal; (iv) converting the received audio data to an audio signal in a processor of the client device, where the audio signal is a time-varying signal; and (v) transmitting the converted audio filter signal and the converted audio signal from the client device to an audio output device, where the audio output device is separate from and in communication with the client device, and where the audio output device is configured for modifying the audio signal according to the audio filter signal to generate a time-varying audio output.
    Type: Grant
    Filed: June 14, 2019
    Date of Patent: April 14, 2020
    Assignee: OM AUDIO, LLC
    Inventors: David Devillez, James Conrey
  • Patent number: 10609502
    Abstract: An exemplary microphone capture simulation system accesses a captured set of audio signals captured by a plurality of directional microphones disposed at a plurality of locations on a perimeter of a capture zone of a real-world scene. The system identifies a location within the capture zone that corresponds to a virtual location at which a user is virtually located within a virtual reality space that is based on the capture zone. Based on the captured set of audio signals and the identified location, the system generates a simulated set of audio signals representative of a simulation of a full-sphere multi-capsule microphone capture at the identified location. The system processes the simulated set of audio signals to form a renderable set of audio signals configured to be rendered to simulate full-sphere sound for the virtual location while the user is virtually located at the virtual location.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: March 31, 2020
    Assignee: Verizon Patent and Licensing Inc.
    Inventors: Zhiguang Eric Zhang, Samuel C. Mindlin, Oliver S. Castaneda, Denny Breitenfeld
  • Patent number: 10591169
    Abstract: In a signal processing device, a signal processing method, a recording medium, and a rangehood apparatus, a filter coefficient is set in a sound cancelling filter, and the sound cancelling filter outputs a cancellation signal. A coefficient calculator calculates a first filter coefficient. An oscillation suppressor calculates a second filter coefficient by applying a window function to the first filter coefficient to set the second filter coefficient as the filter coefficient.
    Type: Grant
    Filed: April 25, 2016
    Date of Patent: March 17, 2020
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Masaya Hanazono, Wakio Yamada
  • Patent number: 10587374
    Abstract: A signal generator includes inverse characteristic calculation means for calculating an inverse characteristic of a transfer function from an inverse characteristic of a frequency characteristic of a signal based on the transmission standard, inverse Fourier transform means for calculating impulse responses of a plurality of points by performing inverse Fourier transform on the inverse characteristic of the transfer function, impulse response cutout means for cutting out the points for a predetermined number of taps from the impulse response, frequency characteristic calculation means for calculating a frequency characteristic based on values of the points for the number of taps cut out from the impulse response, and display control means for displaying on a display screen, the frequency characteristic calculated by the frequency characteristic calculation means and an ideal frequency characteristic read from an S parameter file of a device under test.
    Type: Grant
    Filed: April 25, 2019
    Date of Patent: March 10, 2020
    Assignee: ANRITSU CORPORATION
    Inventors: Tatsuya Iwai, Hiroyuki Onuma
  • Patent number: 10560796
    Abstract: An example implementation may involve a first playback device rendering audio content. The example implementation may also involve the first playback device detecting that a second playback device has been connected to a playback system. After detecting that the second playback device has been connected to the playback system, the first playback device may determine a playback responsibility associated with the second playback device. The determined playback responsibility may include a grouping with the first playback device. After determining the playback responsibility associated with the second playback device, the first playback device may direct the second playback device to render the audio content.
    Type: Grant
    Filed: April 5, 2018
    Date of Patent: February 11, 2020
    Assignee: Sonos, Inc.
    Inventors: Steven Beckhardt, Jonathan Paul Lang, Jonathon Reilly
  • Patent number: 10555083
    Abstract: An acoustic device includes: at least one processor, and at least one memory device that stores a plurality of instructions, which when executed by the at least one processor, causes the at least one processor to operate to: acquire data on a mixed sound of a reproduction sound of a first sound data output from a first speaker and a reproduction sound of a second sound data output from a second speaker, the mixed sound being picked up by a sound pickup device directed toward the first speaker, calculate a first similarity degree indicating similarity between the data on the mixed sound and the first sound data and a second similarity degree indicating similarity between the data on the mixed sound and the second sound data, and determine connection states of the first speaker and the second speaker based on the first similarity degree and the second similarity degree.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: February 4, 2020
    Assignee: YAMAHA CORPORATION
    Inventors: Atsushi Usui, Kenji Kawano, Kotaro Nakabayashi, Ryota Sato, Kohei Sekiguchi, Masaya Kano
  • Patent number: 10542365
    Abstract: An audio system is provided that efficiently detects speaker arrays and configures the speaker arrays to output sound. In this system, a computing device may record the addresses and/or types of speaker arrays on a shared network while a camera captures video of a listening area, including the speaker arrays. The captured video may be analyzed to determine the location of the speaker arrays, one or more users, and/or the audio source in the listening area. While capturing the video, the speaker arrays may be driven to sequentially emit a series of test sounds into the listening area and a user may be prompted to select which speaker arrays in the captured video emitted each of the test sounds. Based on these inputs from the user, the computing device may determine an association between the speaker arrays on the shared network and the speaker arrays in the captured video.
    Type: Grant
    Filed: August 18, 2014
    Date of Patent: January 21, 2020
    Assignee: APPLE INC.
    Inventors: Afrooz Family, Martin E. Johnson, Baptiste P. Paquier
  • Patent number: 10531180
    Abstract: An electronic device, method, and computer program product provide acoustic limiting of an audio output using a feed-forward, filter-based, acoustic control system. An audio signal is received that has more than one acoustic frequency spectra intended for conversion to an acoustic output by transducers of an electronic device. A determination is made of an expected acoustic magnitude respectively for each acoustic frequency spectrum of the more than one acoustic frequency spectra. A determination is made whether the expected acoustic magnitude of any acoustic frequency spectra will exceed an acoustic output threshold. The acoustic control system attenuates the first acoustic frequency spectrum to generate a filtered audio signal with an attenuated acoustic frequency spectrum that is less than or equal to the acoustic output threshold. The filtered audio signal is transmitted to the at least one transducer to the produce the audio output that does not exceed.
    Type: Grant
    Filed: April 6, 2018
    Date of Patent: January 7, 2020
    Assignee: Motorola Mobility LLC
    Inventors: Sanjay N. Kadiwala, Jonathan E. Eklund
  • Patent number: 10505508
    Abstract: An configuration method of audio equipment includes, a first step of preparing a plurality of configuration data sets; a second step of receiving, from a user, selection of one output configuration from among a plurality of output configurations; a third step of receiving, from the user, selection of one input configuration from among input configurations restricted by the selected one output configuration; a fourth step of selecting one amplifier mode from among a plurality of amplifier modes based on the selected one output configuration and the selected one input configuration; and a fifth step of selecting a configuration data set corresponding to the selected one amplifier mode, and applying the selected configuration data set to signal processing to be performed by the signal processor.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: December 10, 2019
    Assignee: Yamaha Corporation
    Inventors: Daisuke Takahashi, Akio Suyama
  • Patent number: 10499145
    Abstract: A sound pressure gradient microphone includes: a first non-directional microphone; a second non-directional microphone; a delay device that receives an output of the second non-directional microphone; and a subtractor that receives an output of the first non-directional microphone and an output of the delay device. The subtractor outputs a difference between the output of the first non-directional microphone and the output of the delay device. A phase of the first non-directional microphone is ahead of a phase of the second non-directional microphone.
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: December 3, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Makoto Takemoto
  • Patent number: 10499152
    Abstract: An automated process for equalizing an audio system and an apparatus for implementing the process. An audio system includes a microphone unit, for receiving the sound waves radiated from a plurality of speakers, acoustic measuring circuitry, for calculating frequency response measurements; a memory, for storing characteristic data of the loudspeaker units and further for storing the frequency response measurements; and equalization calculation circuitry, for calculating an equalization pattern responsive to the digital data and responsive to the characteristic data of the plurality of loudspeaker units. Also described is an automated equalizing system including acoustic measuring circuitry including a microphone for measuring frequency response at a plurality of locations; a memory, for storing the frequency responses at the plurality of locations; and equalization calculation circuitry, for calculating, from the frequency responses, an optimized equalization pattern.
    Type: Grant
    Filed: July 23, 2018
    Date of Patent: December 3, 2019
    Assignee: Bose Corporation
    Inventors: William M. Rabinowitz, Hilmar Lehnert, Keith D. Martin, Richard Saffran, Abhijit Kulkarni, Finn A. Arnold
  • Patent number: 10459684
    Abstract: A first stream and second stream of audio are received. The first stream of audio may comprise source audio content to be played back by the audio playback device. The second stream of audio may comprise a recording of an audio signal output by the audio playback device based on the audio playback device playing the source audio content. An estimated frequency response of an audio playback device may be calculated based on the received first stream of audio and the received second stream of audio. Acoustics of the audio playback device may be adjusted based on the estimated frequency response.
    Type: Grant
    Filed: August 5, 2016
    Date of Patent: October 29, 2019
    Assignee: Sonos, Inc.
    Inventors: Shao-Fu Shih, Patrick McPherson
  • Patent number: 10448179
    Abstract: According to an exemplary aspect of the present invention, there is provided an apparatus comprising: at least one loudspeaker element, at least one processing core, at least one memory including computer program code, the at least one memory and the computer program configured to, with the at least one processing core, cause the apparatus to produce sound via the loudspeaker element, wherein the at least one processing core is configured to adjust the sound according to criteria stored in the at least one memory, wherein the criteria comprise a wide bandwidth roll-off using at least one parametric shelving filter.
    Type: Grant
    Filed: June 12, 2017
    Date of Patent: October 15, 2019
    Assignee: Genelec Oy
    Inventors: Aki Mäkivirta, Jussi Tikkanen, Juha Urhonen, Thomas Lund
  • Patent number: 10437554
    Abstract: Embodiments described herein provide for smart configuration of audio settings for a playback device. According to an embodiment, while a playback device is a part of a first zone group that includes the playback device and at least one first playback device, the playback device applies a first audio setting. The embodiment also includes the playback device joining a second zone group that includes the playback device and at least one second playback device. The embodiment further includes the playback device applying a second audio setting based on an audio content profile corresponding to the second zone group.
    Type: Grant
    Filed: March 13, 2018
    Date of Patent: October 8, 2019
    Assignee: Sonos, Inc.
    Inventor: Jonathan P. Lang
  • Patent number: 10439578
    Abstract: A cloud-based equalizer system for a plurality of smart speakers. Each speaker has a wireless range extender connecting to a wireless access point to directly send and receive data, including audio packet transmissions, to and from the cloud. Equalizer settings associated with the audio packet transmissions are retrieved from a cloud-based search and are communicated to and implemented by at least one of the speakers in the plurality of smart speakers. A wireless communication protocol prioritizes audio packet transmissions over other data that may be transmitted to and from each speaker.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: October 8, 2019
    Assignee: Harman International Industries, Incorporated
    Inventor: Srinath Arunachalam
  • Patent number: 10432797
    Abstract: A pre-distortion system for improved mobile device communications via cancellation of nonlinear distortion is disclosed. The pre-distortion system may transmit an acoustic signal from a network to a device, wherein the acoustic signal includes a linear signal and a nonlinear cancellation signal that cancels at least a portion of nonlinear distortions created once a loudspeaker in the device emits the linear signal. Thus, when a loudspeaker of a mobile device is operating and nonlinear distortions are generated by the loudspeaker or adjacent components of the mobile device in close proximity to the loudspeaker, the pre-distortion system may create one or more nonlinear cancellation signals in the network. The nonlinear cancellation signal may be combined with the linear signal sent to the loudspeaker to cancel the nonlinear distortion signal created by the loudspeaker emitting acoustic sounds from the linear signal. Thus, the nonlinear cancellation signal becomes a pre-distortion signal.
    Type: Grant
    Filed: May 14, 2018
    Date of Patent: October 1, 2019
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Horst J. Schroeter, Donald J. Bowen, Dimitrios Dimitriadis, Lusheng Ji
  • Patent number: 10401919
    Abstract: According to one embodiment, an electronic device includes a first housing including an antenna for wireless communication, and a second housing including a speaker for audio output configured to be used in a state where the second housing overlaps the first housing. When the antenna and the speaker are seen through from an upper surface side of the first housing, a location of the antenna and a location of the speaker do not relatively overlap each other.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: September 3, 2019
    Assignee: Toshiba Client Solutions CO., LTD.
    Inventors: Yusuke Sugiura, Tomofumi Miyamoto
  • Patent number: 10405116
    Abstract: A computing device may transmit playback device configuration information to a given playback device. The computing device may then receive calibration data corresponding to each playback device of a plurality of playback devices, and receive playback device characteristic data indicating at least one playback device characteristic for each playback device of the plurality of playback devices. Based on at least the received calibration data and the received playback device characteristic data, the computing device may determine updated playback device configuration information and transmit data indicating the updated playback device configuration information to the given playback device.
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: September 3, 2019
    Assignee: Sonos, Inc.
    Inventors: Simon Jarvis, Klaus Hartung, Chris Davies, Tim Sheen
  • Patent number: 10403082
    Abstract: An electronic wagering gaming machine system includes a display, one or more input controls, one or more ultrasound emitters and a sensor that detects the location of a person in proximity to the display. Control circuitry executes wagering game software that receives input commands entered via the input control(s), to display graphics output from the wagering game software responsive to the input commands, and to generate public and private sound signals in an audible frequency range. The private sound signals may be directed to the detected person's location by modulating one or more ultrasound carrier waves with the private sound signals and outputting the modulated ultrasound waves toward the detected person's location via the ultrasound emitter(s). The public sound signals may be played in the audible frequency range via the audio speaker(s).
    Type: Grant
    Filed: April 12, 2016
    Date of Patent: September 3, 2019
    Assignee: IGT Canada Solutions ULC
    Inventors: Klaus Achmüller, Stefan Keilwert
  • Patent number: 10396744
    Abstract: Some embodiments of the invention are directed to enabling a user to easily identify the frequency range(s) at which sound masking occurs, and addressing the masking, if desired. In this respect, the extent to which a first stem is masked by one or more second stems in a frequency range may depend not only on the absolute value of the energy of the second stem(s) in the frequency range, but also on the relative energy of the first stem with respect to the second stem(s) in the frequency range. Accordingly, some embodiments are directed to modeling sound masking as a function of the energy of the stem being masked and of the relative energy of the masked stem with respect to the masking stem(s) in the frequency range, such as by modeling sound masking as loudness loss, a value indicative of the reduction in loudness of a stem of interest caused by the presence of one or more other stems in a frequency range.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: August 27, 2019
    Assignee: iZotope, Inc.
    Inventors: James McClellan, Gordon Wichern, Hannah Robertson, Aaron Wishnick, Alexey Lukin, Matthew Hines, Nicholas LaPenn
  • Patent number: 10394521
    Abstract: A speaker device with equalization (EQ) control is provided, wherein the speaker device may be a pair of earbuds or earphones or a headset, comprising: an audio receiving port for receiving audio signals from an audio source, a circuitry comprising at least a processor and a memory, the processor being configured to execute one or more firmware or software programs to perform tasks for processing the audio signals, including equalization of the audio signals according to one of multiple EQ settings stored in the memory, a user input terminal for detecting a user input to select one of the EQ settings; and a speaker driver for emitting sound corresponding to the processed audio signals.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: August 27, 2019
    Assignee: Peag, LLC
    Inventors: Winthrop Cramer, Justin Liu
  • Patent number: 10387481
    Abstract: An excerpt of a media object is extracted by computing, for each bar of an N-bar loop, one or more perceptual quality vectors. For each of the one or more perceptual quality vectors within a search zone (S), one or more distances between bar i and bar i+N is computed and sorted to generate a sorted list of bars.
    Type: Grant
    Filed: June 20, 2018
    Date of Patent: August 20, 2019
    Assignee: Spotify AB
    Inventor: Tristan Jehan
  • Patent number: 10355657
    Abstract: Loudness signal processors and methods for processing an input audio signal in order to control a resulting integrated loudness level and a resulting loudness range of an output audio signal by a predetermined target loudness level and by a predetermined target loudness range, the processors and methods comprising level detection and level distribution analysis; transfer function generation based on the level distribution, the predetermined target loudness level and the predetermined target loudness range; and calculation of a gain to apply to said input audio signal, resulting in said output audio signal.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: July 16, 2019
    Assignee: MUSIC TRIBE GLOBAL BRANDS LTD.
    Inventor: Esben Skovenborg
  • Patent number: 10310803
    Abstract: A modular speaker system comprises a first speaker module; at least one second speaker module in communication with the first speaker module; and a controller that receives an instruction to selectively activate, reactivate, or inactivate the at least one second speaker module with respect to the first speaker module.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: June 4, 2019
    Assignee: BOSE CORPORATION
    Inventor: Lino Antony Pucci
  • Patent number: 10299040
    Abstract: A system can be provided for increasing loudness of an audio signal to present a perceived loudness to a listener that is greater than a loudness provided natively by a loudspeaker. The system can include one or more of the following: a frequency suppressor, a loudness adjuster, an equalizer, and a distortion control module. The frequency suppressor can increase headroom in the audio signal by filtering out low and/or high frequencies. The loudness adjuster can calculate a loudness of the audio signal and apply a gain to the audio signal to increase the loudness. The equalizer can further increase headroom by attenuating portions of a passband of the loudspeaker's frequency response. The distortion control module can induce partial harmonic distortion in the audio signal to further increase loudness.
    Type: Grant
    Filed: November 13, 2017
    Date of Patent: May 21, 2019
    Assignee: DTS, Inc.
    Inventors: Sarah Yang, Richard J. Oliver, Robert C. Maling, III, Aaron Warner
  • Patent number: 10284984
    Abstract: Example techniques involve a calibration state variable. An example implementation receives, via a network interface, an indication that the first playback device is calibrated. Based on receiving the indication that the first playback device is calibrated, the example implementation updates a calibration state variable to indicate that the first playback device is calibrated, wherein the calibration state variable is stored in the data storage. The example implementation sends, via the network interface, an indication of the updated calibration state variable to a second device.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: May 7, 2019
    Assignee: Sonos, Inc.
    Inventors: Dayn Wilberding, Neil Griffiths
  • Patent number: 10270412
    Abstract: A sound-field correction device, comprising: a target calculating unit, a correction amplitude characteristic calculating unit and a setting unit. The target calculating unit calculates, based on a predetermined sound signal, a target amplitude characteristic targeted for sound-field correction by a parametric equalizer and a plurality of auxiliary target amplitude characteristics having amplitude characteristics approximately equal to or gentler than the target amplitude characteristic. The correction amplitude characteristic calculating unit calculates a correction amplitude characteristic for correction sound-field based on the calculated target amplitude characteristic and the calculated plurality of auxiliary target amplitude characteristics. The setting unit sets the parametric equalizer based on the calculated correction amplitude characteristic.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: April 23, 2019
    Assignee: Clarion Co., Ltd.
    Inventors: Kazutomo Fukue, Takeshi Hashimoto, Tetsuo Watanabe, Takatomi Kumagai, Yasuhiro Fujita
  • Patent number: 10271155
    Abstract: An audio playing system has a first channel output device, a first equalizer, and a controller. The first equalizer is configured to adjust a received first channel audio signal with a set of first parameters of frequency response and output the adjusted first channel audio signal to the first channel output device in a first mode, and to adjust the received first channel audio signal with the a of second parameters of frequency response and output the adjusted first channel audio signal to the first channel output device in a second mode. In a test mode, the controller is configured to send a set of test audio signals to the first channel output device and to adjust the set of first parameters of frequency response and the set of second parameters of frequency response based on a plurality of pieces of received first confirmation signal.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: April 23, 2019
    Assignee: GEMTEK TECHNOLOGY CO., LTD.
    Inventors: Hung-Wen Chen, Chih-Hsu Yen, Fu-Ming Tien
  • Patent number: 10269367
    Abstract: A coding apparatus, including a processor that performs operations, including encoding a first band of an input audio signal to be a first spectrum and dividing the first spectrum into a plurality of subbands at equal intervals, each interval including a predetermined number of samples. The operations also include searching a largest amplitude value of the divided first spectrum in each of the subbands, and normalizing the divided first spectrum with the largest amplitude values searched in each of the subbands to obtain a flattened first spectrum. The operations further include searching a best band which has a largest correlation value between each divided band of a second band spectrum and the flattened first spectrum, the second spectrum being higher than a predetermined frequency, and encoding the second spectrum using lag information identifying the best bands for transmitting the lag information to a decoder side.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: April 23, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Takuya Kawashima, Katsunori Daimou, Masahiro Oshikiri
  • Patent number: 10250751
    Abstract: A mobile conference system including a first mobile master hands-free unit and a second mobile slave hands-free unit, each having a microphone, a loudspeaker, a battery unit, an operating unit, a lighting unit, and a first transmitting/receiving unit for bidirectional wireless communication between the first and second mobile hands-free units. The first mobile hands-free unit includes a second transmitting/receiving unit for wireless bidirectional audio communication with an external unit.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: April 2, 2019
    Assignees: Sennheiser Communications A/S, Sennheiser electronic GmbH & Co. KG
    Inventors: Alex Gossen, Andre Scholz, Andreas Müller, David Ditter, Dirk Engelking, Fabian Logemann, Ingo Battis, Jean-Christophe Detay, Jens Tobien, Jens Werner, Jérôme-Etienne Zastrow, Marc Mangold, Mike Reitinger, Najib Khoury, Torben Christiansen, Wienand Mensendiek, Jan-Phillip Röseler
  • Patent number: 10248377
    Abstract: A photoinduction loudspeaker, photoinduction loudspeaker control method and apparatus are provided. The photoinduction loudspeaker includes a loudspeaker and a photoinduction device. The photoinduction device is configured to acquire a light intensity value of an ambient environment where the loudspeaker is located and the photoinduction device transmits the light intensity value to the loudspeaker. The loudspeaker controls its own playing status based on the light intensity value. The photoinduction loudspeaker in the present invention is capable of identifying the ambient environment for selecting its own playing status based on the ambient environment in order to provide more intelligent service for a user.
    Type: Grant
    Filed: November 30, 2015
    Date of Patent: April 2, 2019
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventor: Shangbo Lin
  • Patent number: 10244314
    Abstract: An audio system includes one or more loudspeaker cabinets, each having loudspeakers. The system outputs an omnidirectional sound pattern to determine the acoustic environment. Sensing logic determines an acoustic environment of the loudspeaker cabinets. The sensing logic may include an echo canceller. A playback mode processor adjusts an audio program according to a playback mode determined from the acoustic environment of the audio system. The system may produce a directional pattern superimposed on an omnidirectional pattern, if the acoustic environment is in free space. The system may aim ambient content toward a wall and direct content away from the wall, if the acoustic environment is not in free space. The sensing logic automatically determines the acoustic environment upon initial power up and when position changes of loudspeaker cabinets are detected. Accelerometers may detect position changes of the loudspeaker cabinets.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: March 26, 2019
    Assignee: Apple Inc.
    Inventors: Adam E. Kriegel, Afrooz Family, Sean A. Ramprashad, Sylvain J. Choisel