Having Automatic Equalizer Circuit Patents (Class 381/103)
  • 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
  • Patent number: 10186249
    Abstract: An active noise cancellation system for canceling noises within a predetermined bandwidth includes an analog-to-digital converter, a programmable noise-cancellation module, a first interpolation filter and a digital-to-analog converter. The analog-to-digital converter receives a first audio signal, and converts the first audio signal from an analog signal to a digital signal. The programmable noise-cancellation processes the first audio signal to generate a noise cancellation signal. The first interpolation filter receives a second audio signal and filters the second audio signal. The noise cancellation signal and the filtered second audio signal are integrated by an adder as a third audio signal, and then the digital-to-analog converter converts the third audio signal from a digital signal to an analog signal.
    Type: Grant
    Filed: November 13, 2017
    Date of Patent: January 22, 2019
    Assignee: C-MEDIA ELECTRONICS INC.
    Inventor: Po-Shu Lan
  • Patent number: 10165361
    Abstract: Systems, devices, and methods are described for providing loudspeaker protection. An upstream loudspeaker model estimation component receives sensed electrical characteristics of a loudspeaker, estimates the impedance of the loudspeaker, fits an impedance model to the estimated impedance, and generates an excursion model of the loudspeaker and a gain change parameter from the estimated parameters of the impedance model. A downstream audio signal processing component utilizes the gain change parameter and the excursion model, or parameters thereof, to constrain the temperature of a voice coil of the loudspeaker and to limit a predicted excursion of the loudspeaker. The downstream audio signal processing component also utilizes processed signals associated with the constrained temperature and the limited excursion to suppress unwanted distortion for an output audio signal to be played back by the loudspeaker.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: December 25, 2018
    Assignee: Avago Technologies International Sales Pte. Limited
    Inventor: Jes Thyssen
  • Patent number: 10158337
    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: August 9, 2016
    Date of Patent: December 18, 2018
    Assignee: Bongiovi Acoustics LLC
    Inventors: Anthony Bongiovi, Glenn Zelniker, Phillip Fuller, Ryan Copt
  • Patent number: 10127008
    Abstract: Examples described herein involve maintaining a database of audio processing algorithms. Maintaining the database may involve generating or updating audio processing algorithm entries. In one example, generating an audio processing algorithm may involve a computing device causing a playback device to play a first audio signal in a playback zone, receiving (i) data indicating one or more characteristics of a playback zone, and (ii) data indicating a second audio signal detected by a microphone of the playback device in the playback zone. Based on the second audio signal and a characteristic of the playback device, an audio processing algorithm may be determined. The an association between the determined audio processing algorithm at least one of the one or more characteristics of the playback zone may be stored in the database.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: November 13, 2018
    Assignee: Sonos, Inc.
    Inventors: Timothy W. Sheen, Simon Jarvis
  • Patent number: 10129641
    Abstract: A system for tuning an audio reproduction device is disclosed. The system includes an audio signal generator for generating an audio signal to be played back in an audio reproduction device and sending the audio signal to the audio reproduction device; a microphone signal module for receiving a microphone signal from a microphone, the microphone signal recording a sound wave reproduced by the audio reproduction device when the audio signal is played back in the audio reproduction device; a comparison module for determining whether the microphone signal matches target sound signature data; and a filter module for applying a digital filter to emulate a target sound signature responsive to determining that the microphone signal does not match the target sound signature data.
    Type: Grant
    Filed: June 22, 2016
    Date of Patent: November 13, 2018
    Assignee: Skullcandy, Inc.
    Inventor: Tetsuro Oishi
  • Patent number: 10123126
    Abstract: Techniques described herein generally include methods and systems related to a MEMS-based audio speaker system configured with multiple speaker devices to generate an audio signal that is substantially without a high-band ultrasonic signal. Energy may be transferred to a low frequency sideband of the audio signal output and substantially eliminated from the high frequency sideband of the audio signal by passing an acoustic carrier signal through two different modulators. One modulator may implement a first modulation function on the acoustic carrier signal to generate a first audio signal, where the first modulation function may be based on a target acoustic output signal for the MEMS-based audio speaker system. The second modulator may implement a second modulation function on the acoustic carrier signal to generate a second audio signal, where the second audio signal may be the Hilbert transform of the first audio signal.
    Type: Grant
    Filed: February 8, 2014
    Date of Patent: November 6, 2018
    Assignee: Empire Technology Development LLC
    Inventor: Mordehai Margalit
  • Patent number: 10117019
    Abstract: In one embodiment, a directional microphone array having (at least) two microphones generates forward and backward cardioid signals from two (e.g., omnidirectional) microphone signals. An adaptation factor is applied to the backward cardioid signal, and the resulting adjusted backward cardioid signal is subtracted from the forward cardioid signal to generate a (first-order) output audio signal corresponding to a beampattern having no nulls for negative values of the adaptation factor. After low-pass filtering, spatial noise suppression can be applied to the output audio signal. Microphone arrays having one (or more) additional microphones can be designed to generate second- (or higher-) order output audio signals.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: October 30, 2018
    Assignee: MH Acoustics LLC
    Inventors: Gary W. Elko, Jens M. Meyer, Tomas Fritz Gaensler
  • Patent number: 10111020
    Abstract: Described herein are systems, methods, and apparatus for initiating one or more actions based at least in part on an audio output device. Upon connection of an audio output device such as headphones one or more actions may be configured to occur. These actions may include playing at least a portion of an audio content, presenting information on a display, and so forth.
    Type: Grant
    Filed: May 18, 2015
    Date of Patent: October 23, 2018
    Assignee: Audible, Inc.
    Inventors: Foy C. Sperring, Ajay Arora, Taylor J. Huttner
  • Patent number: 10104490
    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: April 27, 2017
    Date of Patent: October 16, 2018
    Assignee: Apple Inc.
    Inventors: Afrooz Family, Martin E. Johnson, Baptiste P. Paquier
  • Patent number: 10104485
    Abstract: An apparatus for evaluating performance of a headphone assembly is provided with a base and a support having a proximal end extending from the base. The support includes a distal end that is adapted for supporting a headphone assembly, and the support includes a pair of opposing sides that are laterally spaced apart. The apparatus also includes a pair of plates and at least two microphones. Each plate is mounted to one of the opposing sides of the support, and includes a central portion with at least two apertures formed therein. The central portion is sized for receiving a headphone of the headphone assembly. Each microphone is disposed within one of the apertures and arranged such that an outer surface of the microphone is oriented substantially parallel to an outer surface of the plate and adapted for receiving sound emitted from the headphone.
    Type: Grant
    Filed: November 14, 2016
    Date of Patent: October 16, 2018
    Assignee: Harman International Industries, Incorporated
    Inventor: Ulrich Horbach
  • Patent number: 10075789
    Abstract: A GPEQ filter and tuning methods for asymmetric transaural audio reproduction on mobile consumer devices. The GPEQ filter includes an asymmetric FIR filter bank configured to normalize the magnitude responses of at least two audio speakers to a target response above a low frequency cross-over of the audio speakers as reproduced at the listener position and a symmetric IIR filter bank component configured to high pass filter above the low frequency cross-over and equalize the magnitude responses of the at least two audio speakers. In some embodiments the FIR filter bank is configured to normalize the group delay of the audio channels and in some embodiments the IIR filter bank includes an asymmetric IIR filter bank component configured to correct any residual asymmetry in the magnitude responses of the at least two audio speakers. Phase preservation may be accomplished using phase-balanced or phase-compensated IIR filter sections.
    Type: Grant
    Filed: October 11, 2016
    Date of Patent: September 11, 2018
    Assignee: DTS, Inc.
    Inventors: Edward Stein, David Corsello, Guangji Shi
  • Patent number: 10051393
    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 a 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: December 1, 2016
    Date of Patent: August 14, 2018
    Assignee: Bose Corporation
    Inventors: William M. Rabinowitz, Hilmar Lehnert, Keith D. Martin, Richard Saffran, Abhijit Kulkarni, Finn A. Arnold
  • Patent number: 10045139
    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: October 9, 2017
    Date of Patent: August 7, 2018
    Assignee: Sonos, Inc.
    Inventors: Dayn Wilberding, Neil Griffiths
  • Patent number: 10038965
    Abstract: The invention improves HOA sound field representation compression. The HOA representation is analyzed for the presence of dominant sound sources and their directions are estimated. Then the HOA representation is decomposed into a number of dominant directional signals and a residual component. This residual component is transformed into the discrete spatial domain in order to obtain general plane wave functions at uniform sampling directions, which are predicted from the dominant directional signals. Finally, the prediction error is transformed back to the HOA domain and represents the residual ambient HOA component for which an order reduction is performed, followed by perceptual encoding of the dominant directional signals and the residual component.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: July 31, 2018
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Alexander Krueger, Sven Kordon, Johannes Boehm
  • Patent number: 10034079
    Abstract: A modular speaker system, comprising an exoskeleton, configured to mechanically support and quick attach and release at least one functional panel and an electrical interface provided within the exoskeleton, configured to mate with a corresponding electrical connector of the functional panel. An optional endoskeleton is provided to support internal components. The system preferably provides a digital electronic controller, and the electrical interface is a digital data and power bus, with multiplexed communications between the elements of the system. The elements of the system preferably include at least one speaker, and other audiovisual and communications components. Multiple modules may be interconnected, communicating through the electrical interface. A base module may be provided to provide power and typical control, user and audiovisual interface connectors.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: July 24, 2018
    Assignee: Sonic Blocks, Inc.
    Inventors: Scott D. Wilker, Jordan D. Wilker
  • Patent number: 10027299
    Abstract: An apparatus can include a processor; memory accessible by the processor; a microphone; an audio signal output; audio circuitry that renders audio signals to the audio signal output; and volume control circuitry that regulates coarseness of increments of a dynamic range of the audio signals responsive to input via the microphone.
    Type: Grant
    Filed: August 25, 2014
    Date of Patent: July 17, 2018
    Assignee: Lenovo (Singapore) Pte. Ltd.
    Inventors: Amy Leigh Rose, Nathan J. Peterson, Jennifer J. Lee-Baron, John Scott Crowe
  • Patent number: 10028055
    Abstract: Disclosed are an apparatus and method of processing an audio signal to optimize audio for a room environment. One example method of operation may include recording the audio signal generated within a particular room environment and processing the audio signal to create an original frequency response based on the audio signal. The method may also include identifying a target sub-region of the frequency response which has a predetermined area percentage of a total area under a curve generated by the frequency response, determining whether the target sub-region is a narrow energy region, creating a filter to adjust the frequency response, and applying the filter to the audio signal.
    Type: Grant
    Filed: July 4, 2017
    Date of Patent: July 17, 2018
    Assignee: AMX, LLC
    Inventor: Fawad Nackvi
  • Patent number: 10015602
    Abstract: Attenuation covers are used to reduce the amplitude of input signals at a microphone or other sound-receiving component of an auditory prosthesis. The auditory prosthesis detects distortion present in the output signal from sound processing components and notifies a recipient that an attenuation cover is recommended or desirable. Use of the cover can provide a clearer output signal to the recipient, so as to improve the recipient experience. Such covers can be particularly useful in environments where the input sound signals exceed the dynamic range of the auditory prosthesis.
    Type: Grant
    Filed: August 24, 2016
    Date of Patent: July 3, 2018
    Assignee: COCHLEAR LIMITED
    Inventors: Naomi Croghan, Zachary Smith
  • Patent number: 10001968
    Abstract: In an embodiment, a monitor mixing system is provided in which each musician has one or more portable electronic devices (e.g. smart phones, tablets, etc.) that are programmable to select the owner of a plurality of channels of digital audio as either the musician or the band (e.g. one of the other musicians). The device may also be programmable to control the volume of the musicians own channel independently from the volume of the remaining channels, in an embodiment, and may be programmable with a master volume control as well. The plurality of channels of digital audio may be mixed according to the controls and played back for the musician over the device's audio output. In an embodiment, a simple and efficient interface may give the musician considerable control over his/her monitor mix and may free the musician to move about the stage as desired.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: June 19, 2018
    Assignee: Audio Fusion Systems, LLC
    Inventor: Kevin R. Slick
  • Patent number: 9998082
    Abstract: In an example embodiment, an audio device is provided with one or more processors and a computer-readable tangible medium with instructions stored thereon that, when executed, direct the one or more processors to access a target audio file and access a set of evaluated levels associated with one or more preset frequency bands in the target audio file. The computer-readable tangible medium also has instructions that direct the processor to create a set of comparatively balanced levels by comparatively balancing a set of actual levels associated with the one or more preset frequency bands in the target audio file to at least approximate a set of reference levels associated with the one or more preset frequency bands. The computer-readable tangible medium further has instructions that direct the processor to play the target audio file with the set of comparatively balanced levels.
    Type: Grant
    Filed: January 16, 2017
    Date of Patent: June 12, 2018
    Assignee: Gibson Brands, Inc.
    Inventor: Craig Anderton
  • Patent number: 9992573
    Abstract: A filter for correcting phase distortion produced at low frequencies in a loudspeaker system is created by inverting the phase response of the determined complex-valued frequency response of a loudspeaker system. The inverted phase response is obtained by taking the complex conjugate of the phase response. The impulse response for the inverted phase response is obtained by means of an inverse Fourier transform of the inverted phase response. The impulse response provides a linear phase FIR filter having a long filter length. The linear phase FIR filter is applied to the audio signal input to the loudspeaker system. Prior to inverting the phase response, the determined complex-valued frequency response of a loudspeaker system can be subjected to high frequency blanking and polynomial smoothing. Also, the linear phase FIR filter can be subjected to a window function prior to applying the filter to the audio signal.
    Type: Grant
    Filed: October 28, 2014
    Date of Patent: June 5, 2018
    Assignee: Meyer Sound Laboratories, Incorporated
    Inventors: Perrin Meyer, John D. Meyer
  • Patent number: 9984292
    Abstract: A speaker device with a processing unit and a storage device for controlling the operation of the speaker device also has a speaker unit and a connection module. The processing unit adjusts the speaker unit to operate in a first sound mode based on the first frequency characteristic of the speaker unit, and detects whether the connection module is communicatively coupled with a sound device having a second frequency characteristic. The processing unit switches the speaker unit from the first sound mode into a second sound mode based on the comparison between the first frequency characteristic and the second frequency characteristic.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: May 29, 2018
    Assignee: XIX INC.
    Inventors: Jung-Ya Hsieh, Yao-Tsung Yeh, Chun-Yen Yu, Shu-Ming Wei
  • Patent number: 9973617
    Abstract: A mobile terminal is disclosed. The mobile terminal comprises a sound output unit; a display unit displaying a plurality of level objects enabling the user to select a frequency gain predetermined according to the user's age in a sound setting mode; a microphone receiving external noise; and a controller outputting through the sound output unit a sound adjusted with a gain obtained as a summation of a gain adjusted in accordance with a selected level object and a gain adjusted in accordance with the level of input noise.
    Type: Grant
    Filed: August 19, 2014
    Date of Patent: May 15, 2018
    Assignee: LG ELECTRONICS INC.
    Inventor: Heungkyu Lee
  • Patent number: 9967437
    Abstract: A method and apparatus for synchronizing media content emitted from various sources is presented. Arrival timing of outputs from the various sources to a particular location is determined and adjusted to reduce synchronization delays at the particular location. Synchronization delays may be determined by detecting the media output from a combination of sources arriving at the location. Control messages are generated by processing the detected output and determining delays to be applied to corresponding sources.
    Type: Grant
    Filed: March 6, 2013
    Date of Patent: May 8, 2018
    Assignee: Amazon Technologies, Inc.
    Inventors: James David Meyers, Jeffrey O'Neill
  • Patent number: 9952827
    Abstract: Methods, computing devices, and systems that apply equalization settings for particular audio devices based on a content audio profile. A computing device may detect at least one audio device connected to the computing device and request a device sound profile of the at least one audio device from a database remote from the computing device. Computing device may receive the device sound profile of the at least one audio device from the remote database. The computing device may receive content comprising an audio component and a video component and a content audio profile associated with the audio component. The computing device can determine whether to adjust equalizer settings for sound reproduction of the audio component based on the audio profile and the device sound profile of the at least one audio device.
    Type: Grant
    Filed: April 13, 2016
    Date of Patent: April 24, 2018
    Assignee: Comcast Cable Communications, LLC
    Inventor: Galen Trevor Gattis
  • Patent number: 9954505
    Abstract: Disclosed is an audio output control method and an electronic device supporting the same. The audio output control method includes determining an output of an audio processing unit decoding an audio source signal, and controlling generating of a reference signal to be supplied to an audio output unit in response to an output of the audio processing unit.
    Type: Grant
    Filed: January 13, 2015
    Date of Patent: April 24, 2018
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Han Ho Ko, Je Heon Park, Nam-Il Lee, Sang Phil Hong
  • Patent number: 9936328
    Abstract: An apparatus for estimating an overall mixing time, where the apparatus comprises a processing element configured to determine differences between energy profiles of a first room impulse response of the first pair of room impulse responses and a second room impulse response of the first pair of room impulse responses at a plurality of different sample times of the first pair of room impulse responses, set a sample time of the plurality of sample times as a mixing time for the first pair of room impulse responses at which the difference between the energy profiles of the first room impulse response and the second room impulse response of the first pair of room impulse responses is equal to or below a threshold value, and determine the overall mixing time based on the mixing time for the first pair of room impulse responses.
    Type: Grant
    Filed: September 19, 2016
    Date of Patent: April 3, 2018
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Simone Fontana, Peter Grosche, Panji Setiawan
  • Patent number: 9936294
    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 a 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: January 29, 2016
    Date of Patent: April 3, 2018
    Assignee: Bose Corporation
    Inventors: William M. Rabinowitz, Hilmar Lehnert, Keith D. Martin, Richard Saffran, Abhijit Kulkarni, Finn A. Arnold
  • Patent number: 9924261
    Abstract: A hearing protection system with talk-through having a pair of rigid earcups enclosing a microphone, amplifier and speaker. A concha simulator, having a volume simulating that of the concha of a human ear, is acoustically coupled to the microphone, and also to the outside through an opening in the earcup. By coupling the microphone to the concha simulator, instead of directly to the outside, the acoustic response of the talk-through more accurately represents the hearing of a user.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: March 20, 2018
    Assignee: Red Tail Hawk Corporation
    Inventor: John W. Parkins
  • Patent number: 9921801
    Abstract: Positional information indicative of positions of a plurality of terminals is acquired from the terminals through communication; one or more representative terminals are determined from among the terminals in accordance with a state of distribution of the positions; when the positional information satisfies a predetermined condition, a first command to cause the representative terminals to output a sound at a first sound volume being transmitted to the representative terminals, and a second command to cause general terminals to output a sound at a second sound volume different from the first sound volume being transmitted to the general terminals different from the representative terminals; and when the positional information does not satisfy the predetermined condition, a third command to cause the representative terminals and general terminals to output a sound at a third sound volume being transmitted to the representative terminals and general terminals.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: March 20, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Yasuhiro Yuki, Kazuki Funase
  • Patent number: 9913060
    Abstract: A right expected value generator generates an expected value of a right channel spectrum from the right channel spectrum. Further, a left expected value generator generates an expected value of a left channel spectrum from the left channel spectrum. Further, a right channel spectrum corrector so corrects a right channel spectrum outputted from a second synthesizer that the right channel spectrum does not exceed the expected value of the right channel spectrum. Moreover, a left channel spectrum corrector so corrects a left channel spectrum outputted from the second synthesizer that the left channel spectrum does not exceed the expected value of the left channel spectrum.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: March 6, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventor: Hiroki Furukawa
  • Patent number: 9906886
    Abstract: A playback device identifies a first audio filter and a second audio filter. The first audio filter is configured to have a first frequency response and the second audio filter is configured to have a second frequency response. The audio input is processed according to the first audio filter and the second audio filter to produce respective first audio output and second audio output. The first audio speaker renders the first audio output and the second audio speaker renders the second audio output, where the second frequency response of the second audio filter compensates for interference between the first audio output rendered by the first audio speaker and the second audio output rendered by the second audio speaker.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: February 27, 2018
    Assignee: Sonos, Inc.
    Inventor: Gregory Burlingame
  • Patent number: 9899979
    Abstract: A method for recording a playback setting of sound is disclosed. The method is applied to an electronic device having an equalizer and includes the following steps of: acquiring an archival data of a sound file played by the electronic device; receiving a set record command; acquiring a gain setting data of the equalizer according to the set record command; pairing the archival data with the gain setting data to generate a pairing data; and saving the pairing data.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: February 20, 2018
    Assignee: UNLIMITER MFA CO., LTD.
    Inventors: Kuo-Ping Yang, Neo Bob Chih-Yung Young, Kuan-Li Chao, Ming-Ren Ma, Chih-Long Chang
  • Patent number: 9891881
    Abstract: Examples described herein involve maintaining a database of audio processing algorithms. Maintaining the database may involve generating or updating audio processing algorithm entries. In one example, generating an audio processing algorithm may involve a computing device causing a playback device to play a first audio signal in a playback zone, receiving (i) data indicating one or more characteristics of a playback zone, and (ii) data indicating a second audio signal detected by a microphone of the playback device in the playback zone. Based on the second audio signal and a characteristic of the playback device, an audio processing algorithm may be determined. The an association between the determined audio processing algorithm at least one of the one or more characteristics of the playback zone may be stored in the database.
    Type: Grant
    Filed: September 9, 2014
    Date of Patent: February 13, 2018
    Assignee: Sonos, Inc.
    Inventors: Timothy W. Sheen, Simon Jarvis
  • Patent number: 9886965
    Abstract: Systems and methods herein utilize psychoacoustic principles to process audio signals to achieve a desired result. In some embodiments, an exemplary process utilizes a combination of re-harmonization and auditory processing techniques in which a plurality of filtered audio cues are sampled, created and down-mixed into a final music file output, which may be designed to trigger specific effects on the function of the body and the brain. In some embodiments, enhanced audio material may be altered during the stream or fixed for a desired result at the beginning of the stream. In some embodiments, a signal enhancement process may be embedded into silicon or a media player, decoder or device with software. In other embodiments, audio or video material may be encoded or finalized into the media file.
    Type: Grant
    Filed: September 1, 2016
    Date of Patent: February 6, 2018
    Inventors: Zappa Ahmet, Finbar O'Hanlon
  • Patent number: 9888334
    Abstract: An audio playing system has a first channel output device, a first equalizer, a second channel output device, a second equalizer, a loudness adjusting button, and a controller. The first equalizer adjusts a first channel audio signal with a set of first parameters of frequency response and output it to the first channel output device. The second equalizer adjusts a second channel audio signal with a set of second parameters of frequency response and output it to the second channel output device. The loudness adjusting button generates a loudness instruction. The controller determines an upper limit of loudness based on the set of first parameters of frequency response and the set of second parameters of frequency response, and adjusts a loudness related to the first channel audio signal and a loudness related to the second channel audio signal based on the upper limit of loudness and the loudness instruction.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: February 6, 2018
    Assignee: GEMTEK TECHNOLOGY CO.,LTD.
    Inventors: Hung-Wen Chen, Chih-Hsu Yen, Fu-Ming Tien
  • Patent number: 9877132
    Abstract: The invention relates to a method for improving a stereo audio signal of an FM stereo radio receiver. The method comprises determining one or more parametric stereo parameters based on the stereo audio signal in a frequency-variant or frequency-invariant manner. Preferably, these PS parameters are time- and frequency-variant. Moreover, the method comprises generating the improved stereo signal based on a first audio signal and the one or more parametric stereo parameters. The first audio signal is obtained from the stereo audio signal, e.g. by a downmix operation.
    Type: Grant
    Filed: November 26, 2014
    Date of Patent: January 23, 2018
    Assignee: Dolby International AB
    Inventors: Jonas Engdegard, Heiko Purnhagen, Karl Jonas Roeden
  • Patent number: 9866964
    Abstract: A computing system with multiple audio devices local to an environment to provide synchronized audio output to a user. A remote system receives a local audio signal representing sound captured from an environment from a local audio device and a remote audio signal representing sound captured from the environment from the remote audio device. The server determines a delay associated with the local audio signal and a delay associated with the remote audio signals and, based on the delays, synchronizes the audio being output by the local and remote devices.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: January 9, 2018
    Assignee: Amazon Technologies, Inc.
    Inventors: Menashe Haskin, Kavitha Velusamy, Daniel Christopher Bay, Jason Zimmer
  • Patent number: 9864574
    Abstract: A computing device may maintain a database of representative spectral characteristics. The computing device may also receive particular spectral data associated with a particular playback environment corresponding to the particular playback device. Based on the particular spectral data, the computing device may identify one of the representative spectral characteristics from the database that substantially matches the particular spectral data, and then identify, in the database, an audio processing algorithm based on a) the identified representative spectral characteristic and b) at least one characteristic of the particular playback device. The computing device may then transmit, to the particular playback device, data indicating the identified audio processing algorithm.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: January 9, 2018
    Assignee: Sonos, Inc.
    Inventors: Klaus Hartung, Simon Jarvis, Tim Sheen, Chris Davies
  • Patent number: 9859859
    Abstract: A sound-effect setting method and an electronic device are provided. The sound-effect setting method comprises decoding an audio data stream; performing sound-effect processing on the decoded audio data stream according to a sound-effect parameter to obtain sound-effect processed audio data; encoding the sound-effect processed audio data to obtain encoded data and outputting the encoded data and the sound-effect parameter. When the audio playing is switched from the current apparatus to the external apparatus, the sound-effect coordination is achieved, and the problem that the playing effect will become poor if there is no sound-effect coordination is prevented.
    Type: Grant
    Filed: August 17, 2015
    Date of Patent: January 2, 2018
    Assignee: AUTOCHIPS INC.
    Inventor: Jingjian Yu