Surround (i.e., Front Plus Rear Or Side) Patents (Class 381/307)
  • Patent number: 11412337
    Abstract: The present technology relates to a sound processing apparatus and a sound processing system for enabling more stable localization of a sound image. A virtual speaker is assumed to exist on the lower side among the sides of a tetragon having its corners formed with four speakers surrounding a target sound image position on a spherical plane. Three-dimensional VBAP is performed with respect to the virtual speaker and the two speakers located at the upper right and the upper left, to calculate gains of the two speakers at the upper right and the upper left and the virtual speaker, the gains being to be used for fixing a sound image at the target sound image position. Further, two-dimensional VBAP is performed with respect to the lower right and lower left speakers, to calculate gains of the lower right and lower left speakers, the gains being to be used for fixing a sound image at the position of the virtual speaker.
    Type: Grant
    Filed: August 13, 2021
    Date of Patent: August 9, 2022
    Assignee: Sony Group Corporation
    Inventors: Yuki Yamamoto, Toru Chinen, Runyu Shi, Mitsuyuki Hatanaka
  • Patent number: 11355132
    Abstract: A method to decode audio signals is provided that includes: receiving an input spatial audio signal; determining directions of arrival of directional audio sources represented in the received input spatial audio signal; determining one of an active input spatial audio signal component and a passive spatial audio signal input component, based upon the determined directions of arrival; determining the other of the active input spatial audio signal component and the passive input spatial audio signal component based upon the determined one of the active input spatial audio signal component and the passive input spatial audio signal component; decoding the active input spatial audio signal component to a first output format; and decoding the passive input spatial audio signal component to a second output format.
    Type: Grant
    Filed: October 2, 2020
    Date of Patent: June 7, 2022
    Assignee: DTS, Inc.
    Inventors: Michael M. Goodwin, Edward Stein
  • Patent number: 11317231
    Abstract: Apparatus including a processor configured to: receive at least two microphone audio signals; determine spatial metadata associated with the at least two microphone audio signals; and synthesize adaptively a plurality of spherical harmonic audio signals based on at least one microphone audio signal and the spatial metadata in order to output a pre-determined order spatial audio signal format.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: April 26, 2022
    Assignee: Nokia Technologies Oy
    Inventors: Juha Vilkamo, Mikko-Ville Laitinen
  • Patent number: 11265653
    Abstract: An audio system is described that includes one or more speaker arrays that emit sound corresponding to one or more pieces of sound program content into associated zones within a listening area. Using parameters of the audio system (e.g., locations of the speaker arrays and the audio sources), the zones, the users, the pieces of sound program content, and the listening area, one or more beam pattern attributes may be generated. The beam pattern attributes define a set of beams that are used to generate audio beams for channels of sound program content to be played in each zone. The beam pattern attributes may be updated as changes are detected within the listening environment. By adapting to these changing conditions, the audio system is capable of reproducing sound that accurately represents each piece of sound program content in various zones.
    Type: Grant
    Filed: February 24, 2020
    Date of Patent: March 1, 2022
    Assignee: APPLE INC.
    Inventors: Afrooz Family, Anthony P. Bidmead, Erik L. Wang, Gary P. Geaves, Martin E. Johnson, Matthew I. Brown, Michael B. Howes, Sylvain J. Choisel, Tomlinson M. Holman
  • Patent number: 11205435
    Abstract: A method to encode audio signals is provided for use with an audio capture device that includes multiple microphones having a spatial arrangement on the device, a method to encode audio signals comprising: receiving multiple microphone signals corresponding to the multiple microphones; determining a number and directions of arrival of directional audio sources represented in the one or more microphone signals; determining one of an active microphone signal component and a passive microphone signal component, based upon the determined number and directions of arrival; determining the other of the active microphone signal component and the passive microphone signal component, based upon the determined one of the active input spatial audio signal component and the passive input spatial audio signal component; encoding the active microphone signal component; encoding the passive microphone signal component.
    Type: Grant
    Filed: August 16, 2019
    Date of Patent: December 21, 2021
    Assignee: DTS, Inc.
    Inventor: Michael M. Goodwin
  • Patent number: 11170752
    Abstract: The pilot communication system employs a transducer array of individual spaced apart speakers and/or microphones for deployment within the cockpit. A signal processing circuit interfaces with the transducer array and also with the aircraft avionics communication system, and selectively applies different time delays to the individual speakers and/or microphones to create in the array an acoustic beam having steerable coverage within the acoustic space of the cockpit. By adjusting the time delays the signal processing circuit directs and focuses sound from the speakers to the pilot and similarly focuses the microphones on the pilot's mouth. In this way the pilots can communicate with each other and with air traffic control without the need to wear headsets. The system also significantly reduces flight deck warnings from being introduced into the cabin environment.
    Type: Grant
    Filed: April 29, 2020
    Date of Patent: November 9, 2021
    Assignee: Gulfstream Aerospace Corporation
    Inventors: Scott Bohanan, Vincent Dechellis, Tongan Wang, Joseph Salamone, Jim Jordan, Andrew N. Durrence
  • Patent number: 10943578
    Abstract: Various techniques for driving phased array systems are described, specifically intended for acoustic phased arrays with applications to mid-air haptics, parametric audio, acoustic levitation and acoustic imaging, including a system: 1) that is capable of mitigating the effect of the changes in the air to provide a consistent haptic experience; 2) that produces trap points in air; 3) that defines phased-array optimization in terms of vectors for the production of more consistent haptic effects; 4) that defines one or more control points or regions in space via a controlled acoustic field; 5) that uses a reduced representation method for the construction of acoustic basis functions; 6) that performs efficient evaluation of complex-valued functions for a large quantity of throughput; 7) that generates a Krylov sub-space of a matrix; and 8) that maximizes an objective described by different control points and/or regions to those used to create the acoustic basis functions.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: March 9, 2021
    Assignee: ULTRAHAPTICS IP LTD
    Inventor: Benjamin John Oliver Long
  • Patent number: 10945088
    Abstract: A sound reproducing apparatus capable of self-diagnostic. The apparatus includes a directional speaker emitting ultrasound waves to a target object, an information acquisition unit configured to acquire a sound from the target object and optionally an image of the target object, and a processor electrically connected with the directional speaker and the information acquisition unit. The processor drives the directional speaker to emit the ultrasound waves to the target object and diagnoses a failure of the directional speaker based on the sound acquired by the information acquisition unit. A self-diagnostic method for a sound reproducing apparatus having a directional speaker is also provided.
    Type: Grant
    Filed: June 5, 2019
    Date of Patent: March 9, 2021
    Assignee: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Shiro Kobayashi, Masaya Yamashita, Takeshi Ishii, Soichi Mejima
  • Patent number: 10869151
    Abstract: The present disclosure is provided with: at least one audio output unit each including multiple speaker units, at least one of the speaker units in each audio output unit being arranged in orientation different from orientation or orientations of the other speaker units; and an audio signal rendering unit configured to perform rendering processing of generating audio signals to be output from each of the speaker units, based on input audio signals, wherein the audio signal rendering unit performs first rendering processing on a first audio signal included in the input audio signals and performs second rendering processing on a second audio signal included in the input audio signals, and the first rendering processing is rendering processing that enhances a localization effect more than the second rendering processing does.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: December 15, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Takeaki Suenaga, Hisao Hattori
  • Patent number: 10863299
    Abstract: A multi-channel decoder for generating a binaural signal from a downmix signal using upmix rule information on an energy-error introducing upmix rule for calculating a gain factor based on the upmix rule information and characteristics of head related transfer function based filters corresponding to upmix channels. The one or more gain factors are used by a filter processor for filtering the downmix signal so that an energy corrected binaural signal having a left binaural channel and a right binaural channel is obtained.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: December 8, 2020
    Assignee: Dolby International AB
    Inventor: Lars Villemoes
  • Patent number: 10829040
    Abstract: Techniques for using beam-formed acoustic notifications for pedestrian notification are described. Computing device(s) can receive sensor data associated with an object in an environment of a vehicle. The computing device(s) can determine first data for emitting a first beam of acoustic energy via speaker(s) of an acoustic array associated with the vehicle, and second data for emitting a second beam of acoustic energy via speakers of the acoustic array. The computing device(s) can cause the speaker(s) to emit the first beam in a direction of the object at a first time and the second beam in the direction of the object at a second time. Directions of propagation of the first beam and the second beam are offset so that the object can localize the source the acoustic notification, thereby localizing the vehicle in the environment.
    Type: Grant
    Filed: June 10, 2019
    Date of Patent: November 10, 2020
    Assignee: Zoox, Inc.
    Inventors: Jacob Avi Harper, Jeremy Yi-Xiong Yang, Forrest Leighton Merrill, Michael Moshe Kohen, George Dalman Nelson, III, Subasingha Shaminda Subasingha, Josh Alexander Jimenez
  • Patent number: 10820134
    Abstract: The method and apparatus described herein make use of multiple sets of head related transfer functions (HRTFs) that have been synthesized or measured at various distances from a reference head, spanning from the near-field to the boundary of the far-field. Additional synthetic or measured transfer functions maybe used to extend to the interior of the head, i.e., for distances closer than near-field. In addition, the relative distance-related gains of each set of HRTFs are normalized to the far-field HRTF gains.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: October 27, 2020
    Assignee: DTS, Inc.
    Inventors: Edward Stein, Martin Walsh, Guangji Shi, David Corsello
  • Patent number: 10818302
    Abstract: The present document describes a method for extracting J audio sources from I audio channels. The method includes updating a Wiener filter matrix based on a mixing matrix from a source matrix and based on a power matrix of the J audio sources. Furthermore, the method includes updating a cross-covariance matrix of the I audio channels and of the J audio sources and an auto-covariance matrix of the J audio sources, based on the updated Wiener filter matrix and based on an auto-covariance matrix of the I audio channels. In addition, the method includes updating the mixing matrix and the power matrix based on the updated cross-covariance matrix of the I audio channels and of the J audio sources, and/or based on the updated auto-covariance matrix of the J audio sources.
    Type: Grant
    Filed: September 5, 2019
    Date of Patent: October 27, 2020
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Jun Wang, Lie Lu, Qingyuan Bin
  • Patent number: 10805720
    Abstract: The disclosure relates to an audio signal processing apparatus for processing an input audio signal, comprising a filter unit comprising a plurality of filters, each filter configured to filter the input audio signal to obtain a plurality of filtered audio signals, each filter designed according to an extended mode matching beamforming applied to a surface of a half revolution, the surface partially characterizing a loudspeaker enclosure shape, a plurality of scaling units, each scaling unit configured to scale the plurality of filtered audio signals using a plurality of gain coefficients to obtain a plurality of scaled filtered audio signals, and a plurality of adders, each adder configured to combine the plurality of scaled filtered audio signals, thereby providing an output audio signal for producing a sound field having a beam directivity pattern defined by the plurality of gain coefficients.
    Type: Grant
    Filed: June 7, 2019
    Date of Patent: October 13, 2020
    Assignees: Huawei Technologies Co., Ltd., University of Southampton
    Inventors: Simone Fontana, Yue Lang, Filippo Fazi, Mincheol Shin, Ferdinando Oliveri
  • Patent number: 10796704
    Abstract: A method to decode audio signals is provided that includes: receiving an input spatial audio signal; determining directions of arrival of directional audio sources represented in the received input spatial audio signal; determining one of an active input spatial audio signal component and a passive spatial audio signal input component, based upon the determined directions of arrival; determining the other of the active input spatial audio signal component and the passive input spatial audio signal component, based upon the determined one of the active input spatial audio signal component and the passive input spatial audio signal component; decoding the active input spatial audio signal component to a first output format; and decoding the passive input spatial audio signal component to a second output format.
    Type: Grant
    Filed: August 16, 2019
    Date of Patent: October 6, 2020
    Assignee: DTS, Inc.
    Inventors: Michael M. Goodwin, Edward Stein
  • Patent number: 10771912
    Abstract: A method for generating loudspeaker signals associated with a target screen size is disclosed. The method includes receiving a bit stream containing encoded higher order ambisonics signals, the encoded higher order ambisonics signals describing a sound field associated with a production screen size. The method further includes decoding the encoded higher order ambisonics signals to obtain a first set of decoded higher order ambisonics signals representing dominant components of the sound field and a second set of decoded higher order ambisonics signals representing ambient components of the sound field. The method also includes combining the first set of decoded higher order ambisonics signals and the second set of decoded higher order ambisonics signals to produce a combined set of decoded higher order ambisonics signals.
    Type: Grant
    Filed: April 3, 2019
    Date of Patent: September 8, 2020
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Peter Jax, Johannes Boehm, William Redmann
  • Patent number: 10743128
    Abstract: According to an example aspect of the present invention, there is provided a method comprising: calculating a head-related transfer function for a user, the calculation based at least in part on gathered data comprising at least video material and at least one supplemental image, the at least one supplemental image comprising an image of a transparent measurement device superimposed over at least one biological detail of an user, and transmitting said head-related transfer function.
    Type: Grant
    Filed: June 10, 2019
    Date of Patent: August 11, 2020
    Assignee: Genelec Oy
    Inventors: Jaan Johansson, Aapo Karjalainen, Matti Malinen, Jussi Tikkanen, Ville Saari, Poorang Vosough
  • Patent number: 10728692
    Abstract: Embodiments are directed to upward-firing speakers that reflect sound off a ceiling to a listening location at a distance from a speaker. The reflected sound provides height cues to reproduce audio objects that have overhead audio components. A virtual height filter based on a directional hearing model is applied to the upward-firing driver signal to improve the perception of height for audio signals transmitted by the virtual height speaker to provide optimum reproduction of the overhead reflected sound. The upward firing driver is tilted at an inclination angle of approximately 20 degrees to the horizontal axis of the speaker and separate height and direct terminal connections are provided to interface to an adaptive audio rendering system.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: July 28, 2020
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Brett G. Crockett, Alan J. Seefeldt, C. Phillip Brown
  • Patent number: 10715915
    Abstract: An audio system provides for crosstalk processing and crosstalk compensation processing of an audio signal. The crosstalk processing may include crosstalk cancellation processing or crosstalk simulation processing. A crosstalk processed signal is generated by applying the crosstalk processing to a side channel of the left and right channels, with a mid channel of the left and right channels bypassing the crosstalk processing. The crosstalk processed signal and the mid channel that bypasses crosstalk processing is used to generate a left output channel and a right output channel. In some embodiments, a crosstalk compensated signal is generated by applying crosstalk compensation processing to the side channel. The crosstalk compensated signal adjusts for spectral defects caused by the crosstalk processing. The crosstalk processing and crosstalk compensation processing may be applied in different orders.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: July 14, 2020
    Assignee: Boomcloud 360, Inc.
    Inventor: Zachary Seldess
  • Patent number: 10623877
    Abstract: Audio signals are received. The audio signals include left and right surround channels. The audio signals are played back using far-field loudspeakers distributed around a space having a plurality of listener positions. The left and right surround channels are played back by a pair of far-field loudspeakers arranged at opposite sides of the space having the plurality of listener positions. An audio component coinciding with or approximating audio content common to the left and right surround channels is obtained. The audio component is played back using at least a pair of near-field transducers arranged at one of the listener positions. Associated systems, methods and computer program products are provided. Systems, methods and computer program products providing a bitstream comprising the audio signals and the audio component are also provided, as well as a computer-readable medium with data representing such audio content.
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: April 14, 2020
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Remi Audfray, Nicolas R. Tsingos, Jurgen W. Scharpf
  • Patent number: 10587979
    Abstract: A method for localization of sound in a speaker system comprises determining speaker locations of a plurality of speakers in a speaker system, determining a user location of a user within a room, and modifying audio signals to be transmitted to each of the plurality of speakers based on the user location in the room relative to a corresponding one of the speaker locations. An optimum modification of the audio signals for each of the plurality of speakers includes eliminating locational effects of the user location within the room.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: March 10, 2020
    Assignee: Sony Interactive Entertainment Inc.
    Inventor: Scott Wardle
  • Patent number: 10575114
    Abstract: Embodiments of systems and methods are described for estimating a position of a loudspeaker and notifying a listener if an abnormal condition is detected, such as an incorrect loudspeaker orientation or an obstruction in a path between the loudspeaker and a microphone array. For example, a front component of a multi-channel surround sound system may include the microphone array and a position estimation engine. The position estimation engine may estimate the distance between the loudspeaker and the microphone array. In addition, the position estimation engine may estimate an angle of the loudspeaker using a first technique. The position estimation engine may also estimate an angle of the loudspeaker using a second technique. The two angles can be processed to determine whether the abnormal condition exists. If the abnormal condition exists, a listener can be notified and be provided with suggestions for resolving the issue in a graphical user interface.
    Type: Grant
    Filed: May 8, 2019
    Date of Patent: February 25, 2020
    Assignee: DTS, Inc.
    Inventors: Guangji Shi, Michael M. Goodwin, Edward Stein
  • Patent number: 10535357
    Abstract: A device includes a receiver and a decoder. The receiver is configured to receive bitstream parameters corresponding to at least an encoded mid signal. The decoder is configured to generate a synthesized mid signal based on the bitstream parameters. The decoder is also configured to generate a synthesized side signal selectively based on the bitstream parameters in response to determining whether the bitstream parameters correspond to an encoded side signal.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: January 14, 2020
    Assignee: Qualcomm Incorporated
    Inventors: Venkata Subrahmanyam Chandra Sekhar Chebiyyam, Venkatraman Atti
  • Patent number: 10390159
    Abstract: Examples involve calibration of two synchronous playback groups. In an example implementation, a first playback device forms a first group with a second playback device. While formed into the first group, the first playback device plays back a first calibration sound contemporaneously with the second playback device. The first playback device forms a second group with a third playback device. While formed into the second group, the first playback device repeatedly plays back a second calibration sound contemporaneously with the third playback device. The first playback device receives data representing (i) first audio processing coefficients and (ii) second audio processing coefficients. The first playback devices applies the first audio processing coefficients to playback of audio content when formed into the first group and the second audio processing coefficients to playback of audio content when formed into the second group.
    Type: Grant
    Filed: November 6, 2018
    Date of Patent: August 20, 2019
    Assignee: Sonos, Inc.
    Inventors: Timothy Sheen, Aurelio Ramos
  • Patent number: 10349199
    Abstract: An acoustic array system includes a sound field controller and an acoustic transducer array. The sound field controller provides first and second processed signals. The first processed signal is associated with a first acoustic radiation pattern and the second processed signal is associated with a second acoustic radiation pattern. The transducer array receives the first and second processed signals from the sound field controller and produces first and second driver signals for each of the transducers. The first driver signals are based upon the first processed signal and the second driver signals are based upon the second processed signal. The transducer array combines the first and second driver signals for each of the transducers to produce a plurality of combined driver signals, one for each of the transducers, and provides the combined driver signals to the transducers.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: July 9, 2019
    Assignee: BOSE CORPORATION
    Inventors: Soichiro Hayashi, Akira Mochimaru, Marco Panzanella
  • Patent number: 10334387
    Abstract: A method of creating a multichannel audio signal by: determining an expected series of audio emission source locations around an expected listener location; determining a surface around the expected listener location, the surface including the expected series of audio emission source locations; mapping an audio object location into a surface energy component having a surface energy location and magnitude and an expected listener location energy component having an expected listeners location energy location and magnitude; panning an audio object signal for the surface energy component to surrounding expected audio emission sources to produce a first set of surface panned audio emission signals; panning the audio object signal for the expected listeners location energy location to surrounding expected audio emission sources to produce a second set of expected listeners location panned audio emission signals; combining the first and second set of panned audio signals to produce the multichannel audio signal.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: June 25, 2019
    Assignee: Dolby Laboratories Licensing Corporation
    Inventor: David S. McGrath
  • Patent number: 10313817
    Abstract: Embodiments of systems and methods are described for estimating a position of a loudspeaker and notifying a listener if an abnormal condition is detected, such as an incorrect loudspeaker orientation or an obstruction in a path between the loudspeaker and a microphone array. For example, a front component of a multi-channel surround sound system may include the microphone array and a position estimation engine. The position estimation engine may estimate the distance between the loudspeaker and the microphone array. In addition, the position estimation engine may estimate an angle of the loudspeaker using a first technique. The position estimation engine may also estimate an angle of the loudspeaker using a second technique. The two angles can be processed to determine whether the abnormal condition exists. If the abnormal condition exists, a listener can be notified and be provided with suggestions for resolving the issue in a graphical user interface.
    Type: Grant
    Filed: May 2, 2018
    Date of Patent: June 4, 2019
    Assignee: DTS, Inc.
    Inventors: Guangji Shi, Michael M. Goodwin, Edward Stein
  • Patent number: 10271156
    Abstract: Disclosed is an audio signal processing method. The audio signal processing method according to the present invention comprises the steps of: receiving a bit-stream including at least one of a channel signal and an object signal; receiving a user's environment information; decoding at least one of the channel signal and the object signal on the basis of the received bit-stream; generating the user's reproducing channel information on the basis of the user's received environment information; and generating a reproducing signal through a flexible renderer on the basis of at least one of the channel signal and the object signal and the user's reproducing channel information.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: April 23, 2019
    Assignee: INTELLECTUAL DISCOVERY CO., LTD.
    Inventors: Jeongook Song, Myungsuk Song, Hyun Oh Oh, Taegyu Lee
  • Patent number: 10237645
    Abstract: An audio system includes a loudspeaker cabinet defining a longitudinal axis. Several loudspeaker transducers are distributed around the longitudinal axis. The audio system includes an audio rendering processor to cause the loudspeaker transducers to emit a sound field approximating a desired contour. The desired contour can be decomposed into a combination of several constituent modal beam components, and the audio rendering processor can render a truncated version of the decomposition to render an approximation of the desired contour. The desired contour can be one of a plurality of contours stored in a memory, or can be user defined. The cabinet includes a processor and a memory having instructions that, when executed by the processor, cause the audio system decompose a desired contour and to render a truncated version of the decomposition. Related principles are described by way of reference to method and apparatus examples.
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: March 19, 2019
    Assignee: Apple Inc.
    Inventors: Afrooz Family, John H. Sheerin
  • Patent number: 10171926
    Abstract: The present technology relates to a sound processing apparatus and a sound processing system for enabling more stable localization of a sound image. A virtual speaker is assumed to exist on the lower side among the sides of a tetragon having its corners formed with four speakers surrounding a target sound image position on a spherical plane. Three-dimensional VBAP is performed with respect to the virtual speaker and the two speakers located at the upper right and the upper left, to calculate gains of the two speakers at the upper right and the upper left and the virtual speaker, the gains being to be used for fixing a sound image at the target sound image position. Further, two-dimensional VBAP is performed with respect to the lower right and lower left speakers, to calculate gains of the lower right and lower left speakers, the gains being to be used for fixing a sound image at the position of the virtual speaker.
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: January 1, 2019
    Assignee: Sony Corporation
    Inventors: Yuki Yamamoto, Toru Chinen, Runyu Shi, Mitsuyuki Hatanaka
  • Patent number: 10134403
    Abstract: In general, techniques are described for crossfading sets of spherical harmonic coefficients. An audio encoding device or audio decoding device comprising a memory and a processor may be configured to perform the techniques. The memory may be configured to store a first set of spherical harmonic coefficients (SHCs) and a second set of SHCs. The first set of SHCs describe a first sound field. The second set of SHCs describe a second sound field. The processor may be configured to crossfade between the first set of SHCs and a second set of SHCs to obtain a first set of crossfaded SHCs.
    Type: Grant
    Filed: May 14, 2015
    Date of Patent: November 20, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Moo Young Kim, Nils Günther Peters
  • Patent number: 10129674
    Abstract: Examples involve calibration of a synchronous playback group. In an example implementation, a first playback device forms a synchronous playback group with a second playback device. While part of the synchronous playback group, the first playback device receives a command to repeatedly emit a calibration sound according to a sequence for duration of time. Based on the command, the first playback device emits the calibration sound contemporaneously with emission of the calibration sound by the second playback device. Emission of the calibration sound by the first playback device and emission of the calibration sound by the second playback device are staggered such that each emitted calibration sound is delayed relative to a preceding emitted calibration sound. After the duration of time, the first playback device receives data indicating audio processing coefficients and applies the audio processing coefficients when playing back audio content in the synchronous playback group.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: November 13, 2018
    Assignee: Sonos, Inc.
    Inventors: Timothy Sheen, Aurelio Ramos
  • Patent number: 10070242
    Abstract: Various methods and devices for vehicles are provided, wherein directional output of sound is used. In some embodiments, speech signals assigned to different speakers in a telephone conference are reproduced with different directional characteristics. In other embodiments, menu items of a menu are reproduced using different directions. In some embodiments, a loudspeaker arrangement may be provided at a dashboard or in a backrest of a seat of the vehicle.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: September 4, 2018
    Assignees: Volkswagen AG, Audi AG
    Inventor: Florian Rill
  • Patent number: 10045138
    Abstract: An example implementation may involve a network device detecting within a playback environment, via a microphone, an audio signal over a duration of time. After the duration of time, the implementation further involves the network device determining a frequency response of the playback environment based on the detected audio signal and a test tone. The test tone includes (i) a first component that includes noise at frequencies between a minimum of a calibration frequency range and a first threshold frequency, and (ii) a second component that sweeps through frequencies between a second threshold frequency and a maximum of the calibration frequency range.
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: August 7, 2018
    Assignee: Sonos, Inc.
    Inventor: Timothy Sheen
  • Patent number: 10021499
    Abstract: An apparatus for generating four or more audio output signals has a panning gain determiner and a signal processor. The panning gain determiner is configured to determine a proper subset from a set of five or more loudspeaker positions, so that the proper subset has four or more of the five or more loudspeaker positions. Moreover, the panning gain determiner is configured to determine the proper subset depending on a panning position and on the five or more loudspeaker positions, and to determine a panning gain for each of the four or more audio output signals by determining the panning gain depending on the panning position and on the four or more loudspeaker positions of the proper subset. The signal processor is configured to generate each of the four or more audio output signals depending on the panning gain for the audio output signal and on an audio input signal.
    Type: Grant
    Filed: November 9, 2016
    Date of Patent: July 10, 2018
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Christian Borss, Bernhard Grill
  • Patent number: 9986337
    Abstract: Implementations disclosed herein relate to transmitting audio in a target space relative to an electronic device using a directional speaker and non-directional speaker. In one implementation, a directional speaker or non-directional speaker is selected to transmit audio based on a target space for the audio. The audio may then be transmitted from the selected speaker.
    Type: Grant
    Filed: January 16, 2017
    Date of Patent: May 29, 2018
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Britt C. Ashcraft, Eric Chen, Sandie Ning Ning Cheng
  • Patent number: 9986359
    Abstract: Embodiments of systems and methods are described for estimating a position of a loudspeaker and notifying a listener if an abnormal condition is detected, such as an incorrect loudspeaker orientation or an obstruction in a path between the loudspeaker and a microphone array. For example, a front component of a multi-channel surround sound system may include the microphone array and a position estimation engine. The position estimation engine may estimate the distance between the loudspeaker and the microphone array. In addition, the position estimation engine may estimate an angle of the loudspeaker using a first technique. The position estimation engine may also estimate an angle of the loudspeaker using a second technique. The two angles can be processed to determine whether the abnormal condition exists. If the abnormal condition exists, a listener can be notified and be provided with suggestions for resolving the issue in a graphical user interface.
    Type: Grant
    Filed: December 1, 2016
    Date of Patent: May 29, 2018
    Assignee: DTS, Inc.
    Inventors: Guangji Shi, Michael M. Goodwin, Edward Stein
  • Patent number: 9966080
    Abstract: An audio object encoder comprises a receiver (701) which receives N audio objects. A downmixer (703) downmixes the N audio objects to M audio channels, and a channel circuit (707) derives K audio channels from the M audio channels, K=1, 2 and K<M. A parameter circuit (709) generates audio object upmix parameters for at least part of each of the N audio objects relative to the K audio channels and an output circuit (705, 711) generates an output data stream comprising the audio object upmix parameters and the M audio channels. An audio object decoder receives the data stream and includes a channel circuit (805) deriving K audio channels from the M channel downmix; and an object decoder (807) for generating at least part of each of the N audio objects by upmixing the K audio channels based on the audio object upmix parameters. The invention may allow improved object encoding while maintaining backwards compatibility.
    Type: Grant
    Filed: October 29, 2012
    Date of Patent: May 8, 2018
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Jeroen Gerardus Henricus Koppens, Arnoldus Werner Johannes Oomen, Leon Maria Van De Kerkhof
  • Patent number: 9961475
    Abstract: A device obtains an object-based representation of an audio signal of an audio object. The audio signal corresponds to a time interval. Additionally, the device obtains a representation of a spatial vector for the audio object, wherein the spatial vector is defined in a Higher-Order Ambisonics (HOA) domain and is based on a first plurality of loudspeaker locations. The device generates, based on the audio signal of the audio object and the spatial vector, a plurality of audio signals. Each respective audio signal of the plurality of audio signals corresponds to a respective loudspeaker in a plurality of local loudspeakers at the second plurality of loudspeaker locations different from the first plurality of loudspeaker locations.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: May 1, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Moo Young Kim, Dipanjan Sen
  • Patent number: 9888333
    Abstract: Three-dimensional (3D) audio content creation and rendering systems and methodologies are presented here. A disclosed method of processing 3D audio assigns audio source objects to 3D video objects, links audio tracks to assigned audio source objects, and performs wave field synthesis on the linked audio tracks to generate 3D audio data representing a 3D spatial sound field. A disclosed method of processing 3D audio during playback of 3D video content obtains 3D audio data and 3D video data for a frame of 3D video content, applies device-specific parameters to the 3D audio data to obtain transformed 3D audio data scaled to a presentation device, and processes the transformed 3D audio data to render audio information for an array of speakers associated with the presentation device.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: February 6, 2018
    Assignee: GOOGLE TECHNOLOGY HOLDINGS LLC
    Inventors: Robert A. Zurek, Thomas Y. Merrell
  • Patent number: 9872118
    Abstract: A method for identifying the position of loudspeaker boxes in a loudspeaker box arrangement includes the operation of a first loudspeaker box in the loudspeaker box arrangement as an acoustic test signal generator. An acoustic test signal from the first loudspeaker box is received at other loudspeaker boxes in the loudspeaker box arrangement. A positional relationship between the signal-generating first loudspeaker box and at least one of the other loudspeaker boxes in the loudspeaker box arrangement is ascertained on the basis of the acoustic test signal received in the other loudspeaker boxes.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: January 16, 2018
    Assignee: D&B AUDIOTECHNIK GMBH
    Inventors: Frank Bothe, Matthias Christner, Fabian Braun
  • Patent number: 9866985
    Abstract: The present technology relates to an audio signal output device and a method, an encoding device and a method, a decoding device and a method, and a program for realizing audio reproduction with a more realistic feeling. In a case where an audio signal generated to be output as a sound from an ideal speaker that is a virtual speaker placed in an ideal position is input, the distance between the ideal speaker and a real reproduction speaker is determined. Gain adjustment is then performed on the audio signal with the gain corresponding to the determined distance, the audio signal subjected to the gain adjustment is reproduced by the reproduction speaker. Accordingly, even in a case where there is a difference in position between the ideal speaker and the reproduction speaker, audio reproduction with a more realistic feeling can be realized. The present technology can be applied to reproduction devices.
    Type: Grant
    Filed: May 21, 2014
    Date of Patent: January 9, 2018
    Assignee: SONY CORPORATION
    Inventors: Runyu Shi, Toru Chinen, Yuki Yamamoto, Mitsuyuki Hatanaka
  • Patent number: 9852737
    Abstract: In general, techniques are described for coding of vectors decomposed from higher order ambisonic coefficients. A device comprising a processor and a memory may perform the techniques. The processor may be configured to obtain from a bitstream data indicative of a plurality of weight values that represent a vector that is included in a decomposed version of the plurality of HOA coefficients. Each of the weight values may correspond to a respective one of a plurality of weights in a weighted sum of code vectors that represents the vector and that includes a set of code vectors. The processor may further be configured to reconstruct the vector based on the weight values and the code vectors. The memory may be configured to store the reconstructed vector.
    Type: Grant
    Filed: May 14, 2015
    Date of Patent: December 26, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Moo Young Kim, Nils Günther Peters, Dipanjan Sen
  • Patent number: 9843880
    Abstract: A system enhances spatialization in which spatial information about sound sources at an originating location is represented in an audio signal. The system applies a phase difference analysis to the signals received from an array of spaced apart input devices or microphones to derive spatial or directional information about the relative directions of one or more satellite input devices or microphones. The signals from the satellite input devices or microphones are mixed by a function of their respective directions to generate a multichannel output signal. When processed by a remote or local system, the output signal provides a representation of the relative directions of the sound sources at the originating location at a receiving location.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: December 12, 2017
    Assignee: 2236008 Ontario Inc.
    Inventors: Phillip A. Hetherington, Mark Fallat
  • Patent number: 9838820
    Abstract: The present disclosure relates to an acoustic control apparatus applied to a loudspeaker system including first to Mth loudspeakers. In one implementation, the apparatus includes first to Mth control filters. The first to Mth control filters convolve a first input sound signal with first to Mth control filter coefficients to generate first to Mth sound signals. The first to Mth loudspeakers produce sounds based on the first to Mth sound signals. The second to Mth control filter coefficients are calculated based on the first control filter coefficient and at least one first acoustic transfer function set from the first to Mth loudspeakers to at least one first one-ear position, such that a spatial average of at least one sound pressure of the sounds at the at least one first one-ear position comes close to 0.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: December 5, 2017
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Keiichiro Someda, Akihiko Enamito
  • Patent number: 9805726
    Abstract: Apparatus for adapting a spatial audio signal for an original loudspeaker setup to a playback loudspeaker setup that differs from the original loudspeaker setup. The apparatus includes a direct-ambience decomposer that is configured to decomposing channel signals in a segment of the original loudspeaker setup into direct sound and ambience components, and to determine a direction of arrival of the direct sound components. A direct sound renderer receives a playback loudspeaker setup information and adjusts the direct sound components using the playback loudspeaker setup information so that a perceived direction of arrival of the direct sound components in the playback loudspeaker setup is substantially identical to the direction of arrival of the direct sound components. A combiner combines adjusted direct sound components and possibly modified ambience components to obtain loudspeaker signals for loudspeakers of the playback loudspeaker setup.
    Type: Grant
    Filed: May 15, 2015
    Date of Patent: October 31, 2017
    Assignees: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V., Technische Universitaet Ilmenau
    Inventors: Alexander Adami, Juergen Herre, Achim Kuntz, Giovanni Del Galdo, Fabian Kuech
  • Patent number: 9774976
    Abstract: A system and method for rendering a piece of sound program content to include data and parameters that describe perceptual, acoustic, and geometric object properties is provided. The perceptual, acoustic, and geometric properties may include one or more of 1) a three-dimensional location of an audio object, 2) a width of an audio object, 3) ambience characteristics of an audio object, 4) diffuseness characteristics of an audio object, and 5) a direct-to-reverberant sound ratio of an audio object. Based on these pieces of data, an audio playback system may produce one or more beam patterns that reproduce three-dimensional properties of audio objects and/or audio channels of the piece of sound program content. Accordingly, the system and method for rendering a piece of sound program content may accurately represent the multi-dimensional properties of the piece of sound program content through the use of beam patterns.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: September 26, 2017
    Assignee: APPLE INC.
    Inventor: Frank M. Baumgarte
  • Patent number: 9769568
    Abstract: A system and method for speech reinforcement may determine the spatial location of an audio source and the spatial location of a listener. An audio signal generated by the audio source may be captured. The spatial location, relative to the listener, of two or more audio transducers that emit a reinforcing audio signal to reinforce the audio signal may be determined. The captured audio signal, responsive to the spatial location of the audio source, the spatial location of the listener and the spatial location of the two or more audio transducers to generate the reinforcing audio signal, such that, when emitted by the two of more audio transducers, the listener perceives a source of the reinforcing audio signal to be spatially located in substantially the spatial location of the audio source thereby reinforcing the audio signal.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: September 19, 2017
    Assignee: 2236008 Ontario Inc.
    Inventors: Leonard Charles Layton, Phillip Alan Hetherington, Shreyas Paranjpe
  • Patent number: 9712655
    Abstract: A sound signal processing system for achieving a handsfree function irrespective of positions of passengers using one microphone includes a microphone including a plurality of cores, and a head unit for generating a plurality of beams using a plurality of analog signals inputted from each of the plurality of cores, searching for a sound signal through each of the plurality of beams to select one beam, and outputting a sound signal corresponding to the selected beam.
    Type: Grant
    Filed: October 22, 2015
    Date of Patent: July 18, 2017
    Assignee: HYUNDAI MOTOR COMPANY
    Inventor: Kwang Seung Heo
  • Patent number: 9699585
    Abstract: A multi-channel decoder for generating a binaural signal from a downmix signal using upmix rule information on an energy-error introducing upmix rule for calculating a gain factor based on the upmix rule information and characteristics of head related transfer function based filters corresponding to upmix channels. The one or more gain factors are used by a filter processor for filtering the downmix signal so that an energy corrected binaural signal having a left binaural channel and a right binaural channel is obtained.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: July 4, 2017
    Assignee: DOLBY INTERNATIONAL AB
    Inventor: Lars Villemoes