Directive Circuits For Microphones Patents (Class 381/92)
  • Patent number: 9420372
    Abstract: Spherical microphone arrays capture a three-dimensional sound field (P(?c,t) for generating an Ambisonics representation (Anm(t)), where the pressure distribution on the surface of the sphere is sampled by the capsules of the array. The impact of the microphones on the captured sound field is removed using the inverse microphone transfer function. The equalization of the transfer function of the microphone array is a big problem because the reciprocal of the transfer function causes high gains for small values in the transfer function and these small values are affected by transducer noise.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: August 16, 2016
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Sven Kordon, Johann-Markus Batke, Alexander Krueger
  • Patent number: 9414159
    Abstract: Methods and apparatus to beamform a first plurality of microphone signals using at least one beamforming weight to obtain a first beamformed signal, beamform a second plurality of microphone signals using the at least one beamforming weight to obtain a second beamformed signal, and adjust the at least one beamforming weight so that the power density of at least one perturbation component present in the first or the second plurality of microphone signals is reduced.
    Type: Grant
    Filed: February 10, 2014
    Date of Patent: August 9, 2016
    Assignee: NUANCE COMMUNICATIONS, INC.
    Inventors: Tobias Wolff, Markus Buck, Gerhard Uwe Schmidt
  • Patent number: 9407990
    Abstract: An apparatus and method for calibrating gain difference between microphones included in a microphone array are provided. In the gain calibrating apparatus, weights for each frequency component of the acoustic signals, which have been converted into the signals in the frequency domain are calculated. The weights are used to calibrate the acoustic signals such that the plurality of acoustic signals each have the same amplitude while the acoustic signals maintain their individual phase. The amplitudes of the acoustic signals are calibrated by use of the calculated weights. The gain calibrating apparatus calibrates gain in real time while calculating weights for frequency components of the frame of acoustic signals in real time.
    Type: Grant
    Filed: September 28, 2010
    Date of Patent: August 2, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kyu-Hong Kim, So-Young Jeong, Kwang-Cheol Oh, Jae-Hoon Jeong
  • Patent number: 9407996
    Abstract: A microphone system has an output and at least a first transducer with a first dynamic range, a second transducer with a second dynamic range different than the first dynamic range, and coupling system to selectively couple the output of one of the first transducer or the second transducer to the system output, depending on the magnitude of the input sound signal, to produce a system with a dynamic range greater than the dynamic range of either individual transducer. A method of operating a microphone system includes detecting whether a transducer output crosses a threshold, and if so then selectively coupling another transducer's output to the system output. The threshold may change as a function of which transducer is coupled to the system output. The system and methods may also combine the outputs of more than one transducer in a weighted sum during transition from one transducer output to another, as a function of time or as a function of the amplitude of the incident audio signal.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: August 2, 2016
    Assignee: INVENSENSE, INC.
    Inventors: Olli Haila, Kieran Harney, Gary W. Elko, Robert Adams
  • Patent number: 9398379
    Abstract: A directional characteristic of a microphone facility of a hearing system is more reliably controlled. The method determines a first feature value in respect of speech in a first signal of a microphone facility assigned to a first direction and a second feature value in respect of speech in a second signal of the microphone facility assigned to a second direction. A control value is obtained from the difference of the two feature values. The directional characteristic of the microphone facility is controlled with this control value.
    Type: Grant
    Filed: April 25, 2013
    Date of Patent: July 19, 2016
    Assignee: Sivantos Pte. Ltd.
    Inventors: Marc Aubreville, Eghart Fischer, Stefan Wehr
  • Patent number: 9396731
    Abstract: An apparatus for generating an audio output signal to simulate a recording of a virtual microphone at a configurable virtual position in an environment includes a sound events position estimator and an information computation module. The former is adapted to estimate a sound source position indicating a position of a sound source in the environment, wherein the sound events position estimator is adapted to estimate the sound source position based on first and second direction information provided by first and second real spatial microphones, respectively, located at first and second real microphone positions in the environment, respectively. The information computation module is adapted to generate the audio output signal based on a first recorded audio input signal, on the first real microphone position, on the virtual position of the virtual microphone, and on the sound source position.
    Type: Grant
    Filed: May 29, 2013
    Date of Patent: July 19, 2016
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Juergen Herre, Fabian Kuech, Markus Kallinger, Giovanni Del Galdo, Oliver Thiergart, Dirk Mahne, Achim Kuntz, Michael Kratschmer, Alexandra Craciun
  • Patent number: 9363598
    Abstract: An audio-based system may perform audio beamforming and/or sound source localization based on multiple input microphone signals. Each input microphone signal can be calibrated to a reference based on the energy of the microphone signal in comparison to an energy indicated by the reference. Specifically, respective gains may be applied to each input microphone signal, wherein each gain is calculated as a ratio of a energy reference to the energy of the input microphone signal.
    Type: Grant
    Filed: February 10, 2014
    Date of Patent: June 7, 2016
    Assignee: Amazon Technologies, Inc.
    Inventor: Jun Yang
  • Patent number: 9356339
    Abstract: A planar antenna array and articles of manufacture using the same are disclosed. In one embodiment, close-packed antenna elements, disposed on a substrate, number N where N=3x and x is a positive integer. Each of the close-packed antenna elements includes a substantially continuous photonic transducer arranged as an outwardly expanding generally logarithmic spiral having six turns. Each of the outwardly expanding generally logarithmic spirals may be a golden spiral. As an article of manufacture, the planar antenna array may be incorporated into a chip, such as a cell phone, or an article of clothing, for example.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: May 31, 2016
    Assignee: SVR Inventions, Inc.
    Inventors: Kathryn Reavis, Ralph Suddath, Don Vance
  • Patent number: 9344789
    Abstract: Extending a microphone interface. One microphone interface extension includes a controller, a parent microphone, and a child microphone. The controller outputs a controller clock signal. The parent microphone receives the controller clock signal and generates a first data signal. The child microphone generates a second data signal and outputs the second data signal to the first parent microphone. The parent microphone receives the second data signal from the child microphone and outputs a combined data signal to the controller based on the first data signal and the second data signal. The parent microphone outputs the combined data signal to the controller on a phase of a microphone clock signal derived from the controller clock signal.
    Type: Grant
    Filed: June 7, 2013
    Date of Patent: May 17, 2016
    Assignee: Robert Bosch GmbH
    Inventors: Philip Sean Stetson, Sucheendran Sridharan
  • Patent number: 9344809
    Abstract: A system and method for controlling and adjusting a low-frequency response of a MEMS microphone. The system comprising the MEMS microphone, a controller, and a memory. The MEMS microphone includes a membrane and a plurality of air vents. The membrane configured such that acoustic pressures acting on the membrane cause movement of the membrane. The plurality of air vents are positioned proximate to the membrane. Each air vent of the plurality of air vents are configured to be selectively positioned in an open position or a closed position. The controller determines an integer number of air vents to be placed in the closed positioned, and generate a signal that causes the integer number of air vents to be placed in the closed position and causes any remaining air vents to be placed in the open position.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: May 17, 2016
    Assignee: Robert Bosch GmbH
    Inventors: John Matthew Muza, Philip Sean Stetson, Michael James Daley, Davin Luther Yuknis, Joseph R. Fitzgerald
  • Patent number: 9338575
    Abstract: A system includes a microphone array having a plurality of microphones. The system further includes a camera configured to capture stream video and a processing device configured to steer the microphone array based at least in part on the video acquired by the camera. A method includes receiving video captured by a camera, processing the video, and steering a microphone array using signal processing where the steering direction is defined by the processed video.
    Type: Grant
    Filed: February 19, 2014
    Date of Patent: May 10, 2016
    Assignee: EchoStar Technologies L.L.C.
    Inventors: Shounak Mitra, Fred Earl Starks
  • Patent number: 9338605
    Abstract: Systems, methods, and devices for determining the location of one or more mobile devices within a vehicle comprising: (a) a controller located within the vehicle and configured to transmit at least two audio signals, a first audio signal directed generally into a driver space within the vehicle and a second audio signal directed generally into a passenger space within the vehicle, and (b) software code stored in memory of the mobile device and having instructions executable by a processor that performs the steps of: (i) detecting the at least two audio signals, (ii) sampling the at least two audio signals for a predetermined period of time; (iii) performing digital signal processing on the sampled at least two audio signals; and (iv) based on the results of the digital signal processing, determining whether the mobile device was located within the driver space of the vehicle during the predetermined period of time.
    Type: Grant
    Filed: May 8, 2014
    Date of Patent: May 10, 2016
    Assignee: obdEdge, LLC
    Inventors: Robert W. Guba, Joseph E. Breaux, III, Chad A. Kennedy
  • Patent number: 9326064
    Abstract: An apparatus comprises a plurality of microphone units including at least a first microphone unit and a second microphone unit, each of the first and second microphone units comprising a microphone, an analog-to-digital converter, and a local memory. The microphone is configured to capture an analog audio signal. The analog-to-digital converter is configured to convert the analog audio signal created by the microphone into a digital audio signal. The local memory is configured to store the digital audio signal. The apparatus further comprises. a controller unit comprising a processor configured to process the digital audio signals. The first microphone unit and the second microphone unit are operatively connected to the controller unit in a series configuration, the second microphone unit being configured to output the digital audio signal to the first microphone unit, and the first microphone unit being configured to output the digital audio signal to the controller unit.
    Type: Grant
    Filed: October 8, 2012
    Date of Patent: April 26, 2016
    Assignee: VisiSonics Corporation
    Inventors: Ramani Duraiswami, Adam O'Donovan, Dmitry Zotkin
  • Patent number: 9326065
    Abstract: A sound processing apparatus (400) is provided with: a directivity synthesis processing unit (410) for generating a first directivity sound pick-up signal by synthesizing a first sound pick-up signal and a relatively delayed second sound pick-up signal and a second directivity sound pick-up signal by synthesizing a relatively delayed first sound pick-up signal and a second sound pick-up signal; a comparison signal calculation unit (440) for generating a non-directivity level signal indicating the level of a sum of the directivity sound pick-up signals and a directivity level signal by adding the levels of the directivity sound pick-up signals; a level comparison unit (451) for acquiring the difference between the levels of the non-directivity level signal and the directivity level signal; and a delay control unit (452) for adjusting the delay amount such that the difference between the levels becomes smaller.
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: April 26, 2016
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yutaka Banba, Takeo Kanamori
  • Patent number: 9319785
    Abstract: Disclosed is a technique for localizing a sound source. In the technique, a sound pressure signal measured by microphones is acquired using a spherical microphone array sensor where the microphones are fixedly arranged on a surface of a spherical body. A sound pressure distribution on the surface of the spherical body is obtained by a controller from a sound pressure calculation formula for calculating a sound pressure at a certain location of a spherical surface using the sound pressure signal measured by the microphones as an input value. A location of the sound source is estimated from the obtained sound pressure distribution.
    Type: Grant
    Filed: March 20, 2012
    Date of Patent: April 19, 2016
    Assignee: Hyundai Motor Company
    Inventors: Jong Hyun Lee, Myung Han Lee, Mun Hwan Cho, Kang Duck Ih
  • Patent number: 9313336
    Abstract: Systems, methods and apparatus for capturing at least one audio signal using a plurality of microphones that generate a plurality of representations of the at least one audio signal. In some embodiments, the plurality of microphones are disposed in a multiple-microphone setting so that the at least one audio signal is captured by at least two of the plurality of microphones. In some embodiments, at least one of the plurality of microphones is a microphone of a mobile device. The plurality of representations of the at least one audio signal may be processed to obtain a processed representation of the at least one audio signal.
    Type: Grant
    Filed: July 21, 2011
    Date of Patent: April 12, 2016
    Assignee: Nuance Communications, Inc.
    Inventors: William F. Ganong, III, David Mark Krowitz
  • Patent number: 9306606
    Abstract: A method and apparatus for analyzing an input signal. A nonlinear filter system comprises a plurality of polyphase filter banks corresponding to a plurality of orders of nonlinearity. Each of the plurality of polyphase filter banks is configured to process an input signal with respect to a plurality of selected frequency subbands to generate an output signal that corresponds to a corresponding order of the each of the plurality of polyphase filter banks.
    Type: Grant
    Filed: June 10, 2014
    Date of Patent: April 5, 2016
    Assignee: THE BOEING COMPANY
    Inventor: Deying Zhang
  • Patent number: 9299361
    Abstract: Systems and methods for signal noise reduction. An input digital signal may be partitioned into a series of adjacent segments. The adjacent segments may be converted to a frequency domain representation. A particular spectral component of a particular segment may be compared to a related spectral component of a first segment adjacent the particular segment, and to a related spectral component of a second segment adjacent the particular segment. The particular spectral component may be modified upon a magnitude value of the particular spectral component satisfying at least one of a predetermined set of conditions.
    Type: Grant
    Filed: June 12, 2014
    Date of Patent: March 29, 2016
    Assignee: SPREADTRUM COMMUNICATIONS (SHANGHAI) CO., LTD.
    Inventors: Sheng Wu, Fuhuei Lin, Jingming Xu, Bin Jiang
  • Patent number: 9294838
    Abstract: A sound capture system is disclosed that includes an open-sphere microphone array where at least four omnidirectional microphones providing at least four output signals are disposed around a point of symmetry and an evaluation circuit that is connected to the at least four microphones disposed around the point of symmetry and that is configured to superimpose the output signal of each of the at least four microphones disposed around the point of symmetry with the output signal of one of the other microphones to form at least four differential microphone constellations providing at least four output signals, each differential microphone constellation having an axis along which it exhibits maximum sensitivity.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: March 22, 2016
    Assignee: Harman Becker Automotive Systems GmbH
    Inventor: Markus Christoph
  • Patent number: 9294834
    Abstract: The present invention discloses a method and an apparatus for reducing noise in voices of a mobile terminal and relates to the field of communications technologies, which can improve the effect of noise reduction. The method includes: selecting, from a voice headphone and a microphone built in the mobile terminal, a current communicating microphone and a current noise reducing microphone; obtaining an audio signal received by the current communicating microphone and an audio signal received by the current noise reducing microphone; performing noise reduction according to the audio signal received by the current communicating microphone and the audio signal received by the current noise reducing microphone, so as to obtain a noise reduced signal; and performing voice coding according to the noise reduced signal to generate an audio output signal.
    Type: Grant
    Filed: April 30, 2013
    Date of Patent: March 22, 2016
    Assignee: HUAWEI DEVICE CO., LTD.
    Inventors: Hongtao Liu, Xiaopeng Zhang
  • Patent number: 9294833
    Abstract: The invention provides a sound collection device having little error in a desired directivity. The sound collection device includes a unidirectional microphone 12A, a unidirectional microphone 12B, and a unidirectional microphone 12C which are arranged on one plane. Each of the unidirectional microphones has the maximum sensitivity direction directed toward the inside of the arrangement. Each of the unidirectional microphones has a rear surface (direction of the minimum sensitivity) being open acoustically. Since the maximum sensitivity direction of each of the unidirectional microphones is directed toward the inside of the arrangement, the oscillation plane of each of the unidirectional microphones can be positioned substantially at the center of the arrangement. Thus, by adjusting the gain of the sound collected by the respective unidirectional microphones, the directivity can be freely formed on a flat plane with little error.
    Type: Grant
    Filed: December 16, 2009
    Date of Patent: March 22, 2016
    Assignee: YAMAHA CORPORATION
    Inventors: Ryo Oouchi, Yuichiro Suenaga, Satoshi Ukai, Seiichiro Hosoe
  • Patent number: 9288599
    Abstract: An apparatus comprising: a receiver configured to receive at least one audio signal from a recording apparatus; the receiver further configured to receive at least one orientation indicator from the recording apparatus, each orientation indicator associated with one at least audio signal; a recording direction determiner configured to determine a recording orientation of the recording apparatus dependent on the at least one audio signal; a relative distance determiner configured to determining a relative distance of the recording apparatus from a sound source dependent on the at least one audio signal; and a relative position determiner configured to determining a relative position of the recording apparatus dependent on the orientation indicator and relative distance.
    Type: Grant
    Filed: June 17, 2011
    Date of Patent: March 15, 2016
    Assignee: Nokia Technologies Oy
    Inventor: Juha Petteri Ojanperä
  • Patent number: 9288577
    Abstract: For preserving phase shift in spatial filtering is disclosed, an electronic device includes a microphone array. A filtering module spatially filters a plurality of received audio signals from the microphone array to increase the signal-to-noise ratio in one or more corresponding output audio signals. A phase module preserves a phase shift of at least one received audio signal in the corresponding output audio signal.
    Type: Grant
    Filed: July 29, 2013
    Date of Patent: March 15, 2016
    Assignee: Lenovo (Singapore) PTE. LTD.
    Inventors: Jianbang Zhang, Jian Li, John Weldon Nicholson, Steven Richard Perrin
  • Patent number: 9282399
    Abstract: Systems, devices, and methods are described for recognizing and focusing on at least one source of an audio communication as part of a communication including a video image and an audio communication derived from two or more microphones when a relative position between the microphones is known. In certain embodiments, linked audio and video focus areas providing location information for one or more sound sources may each be associated with different user inputs, and an input to adjust a focus in either the audio or video domain may automatically adjust the focus in the another domain.
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: March 8, 2016
    Assignee: QUALCOMM INCORPORATED
    Inventors: Lae-Hoon Kim, Phuong Lam Ton, Erik Visser, Jeremy P. Toman, Francis Bernard MacDougall
  • Patent number: 9280965
    Abstract: The invention provides a method for determining a noise reference signal for noise compensation and/or noise reduction. A first audio signal on a first signal path and a second audio signal on a second signal path are received. The first audio signal is filtered using a first adaptive filter to obtain a first filtered audio signal. The second audio signal is filtered using a second adaptive filter to obtain a second filtered audio signal. The first and the second filtered audio signal are combined to obtain the noise reference signal. The first and the second adaptive filter are adapted such as to minimize a wanted signal component in the noise reference signal.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: March 8, 2016
    Assignee: NUANCE COMMUNICATIONS, INC.
    Inventors: Markus Buck, Tobias Wolff, Toby Christian Lawin-Ore, Samuel Ngouoko Mboungueng, Gerhard Uwe Schmidt
  • Patent number: 9271077
    Abstract: Herein provided is a method and system for directional enhancement of a microphone array comprising at least two microphones by analysis of the phase angle of the coherence between at least two microphones. The method can further include communicating directional data with the microphone signal to a secondary device, and adjusting at least one parameter of the device in view of the directional data. Other embodiments are disclosed.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: February 23, 2016
    Assignee: Personics Holdings, LLC
    Inventors: John Usher, Steve Goldstein
  • Patent number: 9269367
    Abstract: A method of processing audio signals during a communication session between a user device and a remote node, includes receiving a plurality of audio signals at audio input means at the user device including at least one primary audio signal and unwanted signals and receiving direction of arrival information of the audio signals at a noise suppression means. Known direction of arrival information representative of at least some of said unwanted signals is provided to the noise suppression means and the audio signals are processed at the noise suppression means to treat as noise, portions of the signal identified as unwanted dependent on a comparison between the direction of arrival information of the audio signals and the known direction of arrival information.
    Type: Grant
    Filed: August 18, 2011
    Date of Patent: February 23, 2016
    Assignee: Skype Limited
    Inventors: Stefan Strömmer, Karsten Vandborg Sørensen
  • Patent number: 9264799
    Abstract: Systems and methods are provided to create an acoustic map of a space containing multiple acoustic sources. Source localization and separation takes place by sampling an ultra large microphone array containing over 1020 microphones. The space is divided into a plurality of masks, wherein each masks represents a pass region and a complementary rejection region. Each mask is associated with a subset of microphones and beamforming filters that maximize a gain for signals coming from the pass region of the mask and minimizes the gain for signals from the complementary region according to an optimization criterion. The optimization criterion may be a minimization of a performance function for the beamforming filters. The performance function is preferably a convex function. A processor provides a scan applying the plurality of masks to locate a target source. Processor based systems to perform the optimization are also provided.
    Type: Grant
    Filed: October 4, 2012
    Date of Patent: February 16, 2016
    Assignees: Siemens Aktiengesellschaft, University of Maryland
    Inventors: Justinian Rosca, Heiko Claussen, Radu Victor Balan
  • Patent number: 9264524
    Abstract: A dipole microphone assembly for a nearfield sound source has a first microphone and a second microphone. The second microphone is out of phase with the first microphone so as to provide a dipole microphone assembly. Each of the microphones has a port, and a dipole spacing is defined as a distance from the center of the port of the first microphone to the center of the port of the second microphone. The dipole spacing is less than ¼ of a wavelength for the highest frequency of the sound of interest.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: February 16, 2016
    Assignee: The Penn State Research Foundation
    Inventor: David Carl Swanson
  • Patent number: 9257132
    Abstract: A method of dominant speech extraction is provided that includes acquiring a primary audio signal from a microphone and at least one additional audio signal from at least one additional microphone, wherein the acquired audio signals include speech and noise, decomposing each acquired audio signal into a low frequency sub-band signal and a high frequency sub-band signal, applying speech suppression beamforming to the low frequency sub-band signals to generate a reference channel having an estimate of noise in the low frequency sub-band signals, applying noise cancellation to the low frequency sub-band signal of the primary audio signal using the reference channel to generate a first signal having a low frequency estimate of the speech, applying noise suppression beamforming to the high frequency sub-band signals to generate a second signal having a high frequency estimate of the speech, and combining the first and second signals to generate a full-band audio signal.
    Type: Grant
    Filed: July 1, 2014
    Date of Patent: February 9, 2016
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Baboo Vikrhamsingh Gowreesunker, Nitish Krishna Murthy, Edwin Randolph Cole
  • Patent number: 9253581
    Abstract: A hearing aid system has at least two hearing aid devices to be worn on both sides of a wearer's head. The hearing aid devices have a transducer for picking up an acoustic signal and converting same into a first audio signal in each case. A signal processing unit processes audio signals received from each hearing aid device through a signal connection. The signal processing unit evaluates a signal component from a preferred direction in relation to the head of the wearer in the first audio signals. By way of the first audio signals the signal processing unit generates a first binaural directional microphone signal and adjusts its directional characteristic as a function of the evaluation.
    Type: Grant
    Filed: April 21, 2014
    Date of Patent: February 2, 2016
    Assignee: Sivantos Pte. Ltd.
    Inventors: Marc Aubreville, Eghart Fischer, Homayoun Kamkar Parsi
  • Patent number: 9247334
    Abstract: The invention relates to a portable electronic device, comprising: a housing comprising at least one hole; and at least two directional microphones mounted in the housing and placed coincidentally for stereo sound pickup, each one of the microphones defining a main sound axis and each one of the two directional microphones defining a direct sound direction and a opposite sound direction which describe opposite directions of the main sound axis, wherein the at least one hole is a common hole shared between the at least two directional microphones such that the main sound axis of the at least two directional microphones are pointing through the common hole in different directions.
    Type: Grant
    Filed: November 26, 2014
    Date of Patent: January 26, 2016
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Deming Zhang, David Virette, Yue Lang
  • Patent number: 9247192
    Abstract: The present disclosure relates to a mobile terminal and an audio zooming method thereof capable of effectively capturing audio based on an image while capturing and reproducing video. According to the present disclosure, if an event for changing the capture location or range or capture mode of a subject occurs when capturing the subject while capturing the sound of the subject in a predetermined sound capture range, the sound of the subject may be captured by changing a sound capture angle and automatically controlling a sound capture range according to the relevant event, and if an event for changing the capture location or range or capture mode of a subject occurs, the sound of the subject may be captured by automatically controlling a sound capture range according to the event.
    Type: Grant
    Filed: June 24, 2013
    Date of Patent: January 26, 2016
    Assignee: LG ELECTRONICS INC.
    Inventors: Keansub Lee, Hosung Song, Yonghee Lee, Youngjoo Son, Joontae Kim
  • Patent number: 9245516
    Abstract: A noise removal device which removes noise included in a signal, includes: a statistical parameter calculation portion configured to calculate a parameter which expresses distribution of the noise based on the signal; and a noise removal portion configured to remove the noise from the signal by changing an element which relates to a process of removing the noise from the signal depending on the parameter which expresses the distribution of the noise.
    Type: Grant
    Filed: September 20, 2013
    Date of Patent: January 26, 2016
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventor: Sacha Vrazic
  • Patent number: 9241228
    Abstract: Methods and apparatus for self-calibration of small-microphone arrays are described. In one embodiment, self-calibration is based upon a mathematical approximation for which a detected response by one microphone should approximately equal a combined response from plural microphones in the array. In a second embodiment, self-calibration is based upon matching gains in each of a plurality of Bark frequency bands, and applying the matched gains to frequency domain microphone signals such that the magnitude response of all the microphones in the array approximates an average magnitude response for the array. The methods and apparatus may be implemented in hearing aids or small audio devices and used to mitigate adverse aging and mechanical effects on acoustic performance of small-microphone arrays in these systems.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: January 19, 2016
    Assignee: STMICROELECTRONICS ASIA PACIFIC PTE. LTD.
    Inventors: Samuel Samsudin Ng, Muralidhar Karthik, Sapna George
  • Patent number: 9240195
    Abstract: The present invention discloses a speech enhancing method, a speech enhancing device and a denoising communication headphone.
    Type: Grant
    Filed: November 25, 2011
    Date of Patent: January 19, 2016
    Assignee: GOERTEK INC.
    Inventors: Jian Zhao, Song Liu, Bo Li, Yang Hua
  • Patent number: 9232309
    Abstract: An audio system is provided that employs time-frequency analysis and/or synthesis techniques for processing audio obtained from a microphone array. These time-frequency analysis/synthesis techniques can be more robust, provide better spatial resolution, and have less computational complexity than existing adaptive filter implementations. The time-frequency techniques can be implemented for dual microphone arrays or for microphone arrays having more than two microphones. Many different time-frequency techniques may be used in the audio system. As one example, the Gabor transform may be used to analyze time and frequency components of audio signals obtained from the microphone array.
    Type: Grant
    Filed: July 12, 2012
    Date of Patent: January 5, 2016
    Assignee: DTS LLC
    Inventors: Zhonghou Zheng, Shie Qian
  • Patent number: 9232146
    Abstract: The disclosure herein aims to provide an electronic device that makes a sound recording, which gives a realistic sensation. An electronic device disclosed herein includes an imaging unit that captures an image of a subject; an acquiring unit that acquires a parameter having a constant relation with a subject distance that is a distance from the subject to the device; a sound collecting unit that collects sound and generates sound data; a zooming unit that adjusts a magnification of an image of the subject; and a sound processing unit that changes a degree of changing a volume indicated by the sound data with respect to the change in the magnification, according to the parameter.
    Type: Grant
    Filed: September 23, 2013
    Date of Patent: January 5, 2016
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Tetsuhiko Kaneaki, Toshihide Ishimoto
  • Patent number: 9229086
    Abstract: Sound source localization apparatuses and methods are described. A frame amplitude difference vector is calculated based on short time frame data acquired through an array of microphones. The frame amplitude difference vector reflects differences between amplitudes captured by microphones of the array during recording the short time frame data. Similarity between the frame amplitude difference vector and each of a plurality of reference frame amplitude difference vectors is evaluated. Each of the plurality of reference frame amplitude difference vectors reflects differences between amplitudes captured by microphones of the array during recording sound from one of a plurality of candidate locations. A desired location of sound source is estimated based at least on the candidate locations and associated similarity. The sound source localization can be performed based at least on amplitude difference.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: January 5, 2016
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Zhiwei Shuang, David S. McGrath, Glenn N. Dickins
  • Patent number: 9226070
    Abstract: A directional sound source filtering apparatus using a microphone array and a control method thereof are provided. The directional sound source filtering apparatus using a microphone array includes an image detector to detect images in a destination area, a sound collector located by the microphone array in which microphones are arranged to detect sound sources together with the images detected by the image detector. The apparatus includes a controller to precalculate time delay values of sound sources within the images in order to extract sound sources within the image from the sound sources detected by the sound collector, and perform beamforming through the calculated time delay values. Sound source signals only within images may be selectively amplified using beamformers.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: December 29, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Kyung Hak Hyun
  • Patent number: 9220475
    Abstract: Embodiments of the present invention are related to apparatus and methods for acoustically monitoring the performance of a medical device disposed within the body of a patient. According to one embodiment of an apparatus, the apparatus includes at least one acoustic sensor and a computer system that is connected to receive information from the acoustic sensor, wherein the acoustic sensor is adapted to receive a set of acoustic information that corresponds to acoustic activity within the body of said patient. The computer system is adapted for: (A) receiving the set of acoustic information, and (B) using the set of acoustic information to calculate location information relating to a location of a source of the acoustic activity.
    Type: Grant
    Filed: April 14, 2010
    Date of Patent: December 29, 2015
    Assignee: UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC.
    Inventors: Charles T. Klodell, Nikolaus Gravenstein, Wilhelm K. Schwab
  • Patent number: 9215532
    Abstract: In accordance with methods and systems of the present disclosure, a mobile device may include an enclosure adapted such that the enclosure is readily transported by a user of the mobile device, a speaker associated with the enclosure for generating sound, and a controller within the enclosure, communicatively coupled to the speaker. The controller may be configured to receive a signal from the speaker, the signal induced at least in part by sound incident on the speaker other than sound generated by the speaker and process the signal.
    Type: Grant
    Filed: June 12, 2013
    Date of Patent: December 15, 2015
    Assignee: Cirrus Logic, Inc.
    Inventors: John L. Melanson, Eric Swanson
  • Patent number: 9204218
    Abstract: A microphone sensitivity difference correction device includes a detection section that detects a frequency domain signal expressing a stationary noise, based on frequency domain signals of input sound signals respectively input from plural microphones; a first correction section that employs the stationary noise to compute a first correction coefficient for correcting the sensitivity difference between the plural microphones by a frame unit; and a second correction section that employs the frequency domain signals that have been corrected by the first correction section to compute a second correction coefficient for correcting by frequency unit the sensitivity difference between the plural microphones for each of the frames.
    Type: Grant
    Filed: January 15, 2014
    Date of Patent: December 1, 2015
    Assignee: FUJITSU LIMITED
    Inventor: Chikako Matsumoto
  • Patent number: 9194938
    Abstract: Acoustic signals may be localized such that their position in space is determined. Time-difference-of-arrival data from multiple microphones may be used for this localization. Signal data from the microphones may be degraded by reverberation and other environmental distortions, resulting in erroneous localization. By detecting a portion of the signal resulting from sound directly reaching a microphone rather than from a reverberation, accuracy of the localization is improved.
    Type: Grant
    Filed: June 24, 2011
    Date of Patent: November 24, 2015
    Assignee: Amazon Technologies, Inc.
    Inventor: Kavitha Velusamy
  • Patent number: 9197878
    Abstract: A method for determining a position of a controller in a three-dimensional space is disclosed. One method includes an operation to calibrate a computer program to identify a group of recognized fixed points from a plurality of fixed points within the three-dimensional space using a depth camera integrated with the controller. Another operation activates use of the controller and depth camera during interface with the application. During use of the controller, image and depth data within the three-dimensional space is captured with the depth camera of the controller. The captured data can then be used to enable input to a computer system.
    Type: Grant
    Filed: December 26, 2012
    Date of Patent: November 24, 2015
    Assignee: Sony Computer Entertainment America LLC
    Inventor: Gary Zalewski
  • Patent number: 9197272
    Abstract: A cellphone with a detachable receiver includes a cellphone body having a topside provided with a recessed groove and an outer side transversely bored with a through hole. A receiver is inserted in the recessed groove of the cellphone body and exactly positioned at the location of the through hole of the cellphone body and installed therein with a rechargeable battery and a bluetooth device. Thus, when the receiver is inserted in the recessed groove, the through hole can be used for a user to answer phone calls, and when the receiver and the cellphone body are separated, the receiver can be employed as a bluetooth headset. The cellphone with a detachable receiver of this invention is convenient to be carried about, simple in use, light and skillful in structure and easy to be stored.
    Type: Grant
    Filed: April 3, 2014
    Date of Patent: November 24, 2015
    Assignee: COREMATE TECHNICAL CO., LTD.
    Inventor: Robert Wang
  • Patent number: 9185507
    Abstract: Ambience signal components are obtained from source audio signals, matrix-decoded signal components are obtained from the source audio signals, and the ambience signal components are controllably combined with the matrix-decoded signal components. Obtaining ambience signal components may include applying at least one decorrelation filter sequence. The same decorrelation filter sequence may be applied to each of the input audio signals or, alternatively, a different decorrelation filter sequence may be applied to each of the input audio signals.
    Type: Grant
    Filed: June 6, 2008
    Date of Patent: November 10, 2015
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Mark Stuart Vinton, Mark F. Davis, Charles Quito Robinson
  • Patent number: 9185509
    Abstract: An apparatus comprising at least one processor and at least one memory including computer program code the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to perform providing a visual representation of at least one audio parameter associated with at least one audio signal, detecting via an interface an interaction with the visual representation of the audio parameter, and processing the at least one audio signal associated with the audio parameter dependent on the interaction.
    Type: Grant
    Filed: December 23, 2009
    Date of Patent: November 10, 2015
    Assignee: Nokia Technologies Oy
    Inventors: Ville Mikael Myllyla, Jorma Juhani Makinen, Kari Juhani Jarvinen, Matti Kustaa Kajala
  • Patent number: 9182475
    Abstract: Provided is a sound source signal filtering method and apparatus. The sound source signal filtering method includes: generating two or more microphone output signals by combining sound source signals input through a plurality of microphones; calculating distances between the microphones and a sound source from which the sound source signals are emitted by using distance relationships according to frequencies of the sound source signals extracted from the generated microphone output signals; and filtering the sound source signals to obtain one or more sound source signals corresponding to a predetermined distance by using the calculated distances. Accordingly, it is possible to obtain only sound source signals emitted from a sound source at a particular distance from the microphone array among a plurality of sound source signals input through the microphone array.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: November 10, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jae-hoon Jeong, Kwang-cheol Oh, Kyu-hong Kim, So-young Jeong
  • Patent number: 9185488
    Abstract: Detection from sensors may be used to configure or modify the configuration of audio directional processing to improve user safety and/or communication by processing at least one control parameter dependent on at least one sensor input parameter, processing at least one audio signal dependent on the processed at least one control parameter, and outputting the processed at least one audio signal.
    Type: Grant
    Filed: November 30, 2009
    Date of Patent: November 10, 2015
    Assignee: Nokia Technologies Oy
    Inventors: Asta Maria Karkkainen, Jussi Virolainen