Virtual Positioning Patents (Class 381/310)
  • Patent number: 9843883
    Abstract: Provided is an improved method for source-independent sound field rotation for virtual and augmented reality applications. The method provides sound field rotation for any type of audio recording source without requiring special processing for different audio formats. The method provides an effective approach to rotate any audio source while preserving directional sound source information.
    Type: Grant
    Filed: May 12, 2017
    Date of Patent: December 12, 2017
    Assignee: QOSOUND, INC.
    Inventor: Huan-Yu Su
  • Patent number: 9813837
    Abstract: In some embodiments, methods for generating an object based audio program including screen-elated metadata indicative of at least one warping degree parameter for at least one audio object, or generating a speaker channel-based program including by warping audio content of an object based audio program to a degree determined at least in part by at least one warping degree parameter, or methods for decoding or rendering any such audio program. Other aspects are systems configured to perform such audio signal generation, decoding, or rendering, and audio processing units (e.g., decoders or encoders) including a buffer memory which stores at least one segment of any such audio program.
    Type: Grant
    Filed: November 11, 2014
    Date of Patent: November 7, 2017
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Charles Q. Robinson, Nicolas R. Tsingos, Freddie Sanchez
  • Patent number: 9788120
    Abstract: An audio playback device which plays back an audio object including an audio signal and playback position information indicating a position in a three-dimensional space at which a sound image of the audio signal is localized, includes: at least one speaker array; a converting unit which converts playback position information to corrected playback position information which is information indicating a position of the sound image on a two-dimensional coordinate system based on a position of the at least one speaker array; and a signal processing unit which localizes the sound image of the audio signal included in the audio object according to the corrected playback position information.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: October 10, 2017
    Assignee: Socionext Inc.
    Inventors: Shuji Miyasaka, Kazutaka Abe, Anh Tuan Tran, Yong Hwee Sim, Zong Xian Liu
  • Patent number: 9769589
    Abstract: Aspects of the present disclosure relate to techniques for processing a source audio signal in order to localize sounds. In particular, aspects of the present disclosure relate to sound localization techniques which externalize sounds for headphone audio, such as a virtual surround sound headphone system. In various implementations, room reverberations and other acoustic effects of the environment may be more accurately modeled using improved room reverberation models. For example, in some implementations, the underlying source signal may be filtered with a filter representing a room impulse response that is a combination of a stereo room impulse response and a mono room impulse response. By way of further example, in some implementations the source signal may be filtered with a combined impulse response filter that is derived from binaural recordings of simulated impulses recorded in a desired reverberant environment.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: September 19, 2017
    Assignee: SONY INTERACTIVE ENTERTAINMENT INC.
    Inventors: Frederick Umminger, Scott Wardle
  • Patent number: 9729995
    Abstract: An apparatus for generating a plurality of audio channels for a first speaker setup is characterized by an imaginary speaker determiner, an energy distribution calculator, a processor and a renderer. The imaginary speaker determiner is configured to determine a position of an imaginary speaker not contained in the first speaker setup to obtain a second speaker setup containing the imaginary speaker. The energy distribution calculator is configured to calculate an energy distribution from the imaginary speaker to the other speakers in the second speaker setup. The processor is configured to repeat the energy distribution to obtain a downmix information for a downmix from the second speaker setup to the first speaker setup. The renderer is configured to generate the plurality of audio channels using the downmix information.
    Type: Grant
    Filed: July 5, 2016
    Date of Patent: August 8, 2017
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Christian Borss, Christian Ertel, Johannes Hilpert, Achim Kuntz, Michael Fischer, Florian Schuh, Bernhard Grill
  • Patent number: 9712936
    Abstract: In general, techniques and devices are described for motion compensation. An example a device configured to compensate motion. The device includes a memory configured to store audio data associated with a three-dimensional (3D) soundfield and one or more processors. The one or more processors are configured to receive motion information indicating one or more movements associated with a capture of one or more audio objects of a three-dimensional (3D) soundfield by a microphone array, and to adjust virtual positioning information associated with one or more microphones of a microphone array to compensate one or more movements associated with a capture of one or more audio objects of the 3D soundfield by the microphone array. The one or more processors may also be configured to generate a motion-compensated bitstream based on the adjusted virtual positioning information.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: July 18, 2017
    Assignee: QUALCOMM Incorporated
    Inventor: Nils Günther Peters
  • Patent number: 9694285
    Abstract: According to one embodiment of the technology described herein, a audio headset system is provided, comprising: a speaker; a signal processor configured to process source audio received from an audio source, to produce processed audio from the source audio, and to output the processed audio to the speaker; and a control unit configured to control operation of the signal processor according to an audio profile, wherein the audio profile causes the signal processor to selectively mix, delay, phase shift, and equalize the source audio, thereby producing processed audio.
    Type: Grant
    Filed: June 6, 2016
    Date of Patent: July 4, 2017
    Assignee: Performance Designed Products LLC
    Inventors: Antonio Meneses, Gerard Lambert Block, Scott Michael Terrell, Thomas John Roberts
  • Patent number: 9648436
    Abstract: An augmented reality sound systems is disclosed. An augmented reality sound system includes a at least one microphone for receiving ambient sound and a memory storing one or more augmented reality sound profiles and a respective set of processing parameters. The system further includes a processor coupled to the memory and configured to generate augmented ambient sound from the ambient sound by reproducing the ambient sound in conjunction with processed sound superimposed over the ambient sound as directed by one or more of the set of processing parameters retrieved from the memory based on a selected augmented reality sound profile.
    Type: Grant
    Filed: September 1, 2015
    Date of Patent: May 9, 2017
    Assignee: Doppler Labs, Inc.
    Inventors: Noah Kraft, Richard Fritz Lanman, III, Jeff Baker, Gints Klimanis, Anthony Parks, Daniel C. Wiggins
  • Patent number: 9554227
    Abstract: An audio signal processing apparatus including an index estimation unit that receives three-dimensional image information as an input and generates index information for applying a three-dimensional effect to an audio object in at least one direction of right, left, up, down, front, and back directions, based on the three-dimensional image information; and a rendering unit for applying a three-dimensional effect to the audio object in at least one direction of right, left, up, down, front, and back directions, based on the index information.
    Type: Grant
    Filed: July 30, 2012
    Date of Patent: January 24, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sun-min Kim, Young-woo Lee, Yoon-jae Lee
  • Patent number: 9549276
    Abstract: Disclosed are an audio apparatus and an audio providing method thereof. The audio providing method includes receiving an audio signal including a plurality of channels, applying an audio signal having a channel, from among the plurality of channels, giving a sense of elevation to a filter to generate a plurality of virtual audio signals to be respectively output to a plurality of speakers, applying a combination gain value and a delay value to the plurality of virtual audio signals so that the plurality of virtual audio signals respectively output through the plurality of speakers form a sound field having a plane wave, and respectively outputting the plurality of virtual audio signals, to which the combination gain value and the delay value are applied, through the plurality of speakers. The filter processes the audio signal to have a sense of elevation.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: January 17, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sang-bae Chon, Sun-min Kim, Hyun Jo, Jeong-su Kim
  • Patent number: 9454967
    Abstract: An apparatus and method for generating a wave field synthesis (WFS) signal in consideration of a height of a speaker are disclosed. The WFS signal generation apparatus may include a waveform propagation distance determination unit to determine a propagation distance of a waveform propagate from a sound source based on a height of a speaker, and a WFS signal generation unit to generate a WFS signal corresponding to the speaker using the propagation distance of the waveform.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: September 27, 2016
    Assignee: Electronics and Telecommunications Research Instit
    Inventors: Jae-Hyoun Yoo, Keun Woo Choi, Jeong Il Seo, Kyeong Ok Kang
  • Patent number: 9454971
    Abstract: Higher Order Ambisonics (HOA) represents a complete sound field in the vicinity of a sweet spot, independent of loudspeaker set-up. The high spatial resolution requires a high number of HOA coefficients. In the invention, dominant sound directions are estimated and the HOA signal representation is decomposed into dominant directional signals in time domain and related direction information, and an ambient component in HOA domain, followed by compression of the ambient component by reducing its order. The reduced-order ambient component is transformed to the spatial domain, and is perceptually coded together with the directional signals. At receiver side, the encoded directional signals and the order-reduced encoded ambient component are perceptually decompressed, the perceptually decompressed ambient signals are transformed to an HOA domain representation of reduced order, followed by order extension.
    Type: Grant
    Filed: May 6, 2013
    Date of Patent: September 27, 2016
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Alexander Kruger, Sven Kordon, Johannes Boehm, Johann-Markus Batke
  • Patent number: 9420392
    Abstract: A virtual reality system is operated by, detecting a spatial position of a head of a first person who is wearing virtual reality glasses and headphones, displaying a virtual object within a virtual environment from a virtual direction of view by the virtual reality glasses. The virtual direction of view is specified depending on the detected spatial position of the head. An acoustic recording is reproduced by the headphones. A speech sound of a second person is detected a microphone device and converted into a speech signal. The speech signal is also reproduced by the headphones, the left and right loudspeakers of the headphones being operated depending on the detected spatial position of the head such that the speech signal is reproduced by the loudspeakers as if the speech sound were to pass to the first person without the headphones being worn.
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: August 16, 2016
    Assignee: AUDI AG
    Inventors: Marcus Kuehne, Thomas Zuchtriegel
  • Patent number: 9402144
    Abstract: An apparatus for changing an audio scene has a direction determiner and an audio scene processing apparatus. The audio scene has at least one audio object having an audio signal and associated meta data. The direction determiner determines a direction of a position of the audio object with respect to a reference point based on the meta data of the audio object. Further, the audio scene processing device processes the audio signal, a processed audio signal derived from the audio signal or the meta data of the audio object based on a determined directional function and the determined direction of the position of the audio object.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: July 26, 2016
    Assignee: IOSONO GmbH
    Inventors: Frank Melchior, Robert Steffens, Andreas Partzsch, Uwe Michaelis
  • Patent number: 9397771
    Abstract: Representations of spatial audio scenes using higher-order Ambisonics HOA technology typically require a large number of coefficients per time instant. This data rate is too high for most practical applications that require real-time transmission of audio signals. According to the invention, the compression is carried out in spatial domain instead of HOA domain. The (N+1)2 input HOA coefficients are transformed into (N+1)2 equivalent signals in spatial domain, and the resulting (N+1)2 time-domain signals are input to a bank of parallel perceptual codecs. At decoder side, the individual spatial-domain signals are decoded, and the spatial-domain coefficients are transformed back into HOA domain in order to recover the original HOA representation.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: July 19, 2016
    Assignee: DOLBY LABORATORIES LICENSING CORPORATION
    Inventors: Peter Jax, Johann-Markus Batke, Johannes Boehm, Sven Kordon
  • Patent number: 9377941
    Abstract: A method consistent with certain implementations involves in an audio system having an array of a plurality of loudspeakers and a stored speaker map identifying the geometric relationship between the plurality of loudspeakers and a listening position, identifying a location on the speaker map of a Source Origin of a sound; selecting a method of localizing the Source Origin from a plurality of methods of localizing the Source Origin utilizing the array of loudspeakers; and reproducing the sound emanating from the Source Origin using the selected method. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract.
    Type: Grant
    Filed: September 1, 2011
    Date of Patent: June 28, 2016
    Assignee: SONY CORPORATION
    Inventors: Andy Nguyen, Ted Dunn, Lobrenzo Wingo, Djung Nguyen, Nobukazu Sugiyama
  • Patent number: 9358454
    Abstract: According to one embodiment of the technology described herein, a audio headset system is provided, comprising: a speaker; a signal processor configured to process source audio received from an audio source, to produce processed audio from the source audio, and to output the processed audio to the speaker; and a control unit configured to control operation of the signal processor according to an audio profile, wherein the audio profile causes the signal processor to selectively mix, delay, phase shift, and equalize the source audio, thereby producing processed audio.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: June 7, 2016
    Assignee: Performance Designed Products LLC
    Inventors: Antonio Meneses, Gerard Lambert Block, Scott Michael Terrell, Thomas John Roberts
  • Patent number: 9271081
    Abstract: A method for sound field reproduction into a listening area of spatially encoded first audio input signals according to sound field description data using an ensemble of physical loudspeakers. The method includes computing reproduction subspace description data from loudspeaker positioning data describing the subspace in which virtual sources can be reproduced with the physically available setup. Then, second and third audio input signals with associated sound field description data, in which second audio input signals include spatial components of the first audio input signals located within the reproducible subspace and third audio input signals include spatial components of the first audio input signals located outside of the reproducible subspace. A spatial analysis is performed on second audio input signals to extract fourth audio input signals corresponding to localizable sources within the reproducible subspace with associated source positioning data.
    Type: Grant
    Filed: August 25, 2011
    Date of Patent: February 23, 2016
    Assignee: SoniceMotion AG
    Inventors: Etienne Corteel, Matthias Rosenthal
  • Patent number: 9271103
    Abstract: A device may be configured to sense its own orientation with respect to a coordinate system, and to also sense the orientation of a user's head with respect to the device. The device may then determine whether the device orientation has changed with respect to the coordinate system and/or whether the head orientation has changed with respect to the device. Audio signal generation in the device may then be controlled based on the determination. For example, the position of a simulated sound source may be changed in a 3-D audio field based on determined changes in device and/or head orientation. The audio signal may then be transmitted from the device to an apparatus configured to generate sound based on the audio signal (e.g., headphones).
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: February 23, 2016
    Assignee: Intel Corporation
    Inventor: Kevin C. Wells
  • Patent number: 9263055
    Abstract: Systems and methods for generating and performing a three-dimensional audio CAPTCHA are provided. One exemplary system can include a decoy signal database storing a plurality of decoy signals. The system also can include a three-dimensional audio simulation engine for simulating the sounding of a target signal and at least one decoy signal in an acoustic environment and outputting a stereophonic audio signal based on the simulation. One exemplary method includes providing an audio prompt to a resource requesting entity. The audio prompt can have been generated based on a three-dimensional audio simulation of the sounding of a target signal containing an authentication key and at least one decoy signal in an acoustic environment. The method can include receiving a response to the audio prompt from the resource requesting entity and comparing the response to the authentication key.
    Type: Grant
    Filed: April 10, 2013
    Date of Patent: February 16, 2016
    Assignee: Google Inc.
    Inventors: Yannis Agiomyrgiannakis, Edison Tan, David John Abraham
  • Patent number: 9264813
    Abstract: A speaker system includes a first array of transducers in a speaker enclosure and, and at least a second array of transducers in the speaker enclosure. The second array is a low-frequency array and the first array is a high-frequency array. The transducers in the first array are configured to have an operating frequency region covering at least the frequency ranges of the first array and the second array, and the transducers in the second are configured to have an operating frequency region covering at least the frequency ranges of the first array and the second array. The speaker system further includes an input port, and a controller operatively coupled with the input port. The controller is configured to provide an electronic-audio signal to the transducers such that the first array and the second array are tuned to different center frequencies and are a two stage dipole beamforming array.
    Type: Grant
    Filed: March 1, 2011
    Date of Patent: February 16, 2016
    Assignee: Logitech, Europe S.A.
    Inventors: Jason Riggs, Jason N. Linse, Rong Hu, Joy E. Lyons
  • Patent number: 9244925
    Abstract: An apparatus may include a processor circuit and an audio alignment module operative on the processor circuit to determine spatial indicia for a visual portion or element of multimedia content for presentation on a digital display, the multimedia content comprising visual content and audio content. The audio alignment module may be further operative to identify an audio signal corresponding to the visual portion or element and send the identified audio signal to one or more audio output devices based on a spatial correlation between the one or more audio output devices and the determined spatial indicia of the visual portion or element.
    Type: Grant
    Filed: September 21, 2012
    Date of Patent: January 26, 2016
    Assignee: INTEL CORPORATION
    Inventor: Daniel Avrahami
  • Patent number: 9237398
    Abstract: Systems and methods are disclosed for a sound reproduction apparatus configured for receiving signals representative of the output of a plurality of microphones positioned to sample a sound field at points representing possible locations of a listener's left and right ears when positioned in said sound field at the location of the microphones, receiving a location of at least one sound source relative to said plurality of microphones, receiving orientation data of the listener's head, and calculating a binaural output using the sound source location, microphone output signals and orientation data. The binaural output includes the full-bandwidth of the microphone output signals.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: January 12, 2016
    Assignee: DYSONICS CORPORATION
    Inventors: V. Ralph Algazi, Richard O. Duda
  • Patent number: 9200944
    Abstract: For determining a subjective property such as loudness of a binaural sound signal left and right sound pressures in the left and right ears of a human being, resulting from the binaural sound signal, are determined. The left and right sound pressures are frequency analyzed to obtain left and right frequency spectra. In each frequency band, the diotic (common) sound pressure in the left and right ears is determined, which would result from a plane wave frontal incidence on the human being, and that would produce the same perceived loudness as the frequency bandwidth limited left and right sound pressures. In each frequency band the inverse frontal head related transfer functions are used to determine the free-field sound pressure that would produce the same perceived loudness as the diotic sound pressure. The loudness is determined as the loudness of the totality of frequency bandwidth limited free field sound pressures, preferably using the international standard ISO 532.
    Type: Grant
    Filed: April 27, 2005
    Date of Patent: December 1, 2015
    Assignee: Brüel & Kjær Sound & Vibration Measurement A/S
    Inventors: Ville Pekka Sivonen, Wolfgang Ellermeier, Soren Bech, Finn Kryger Nielsen
  • Patent number: 9191733
    Abstract: A headphone apparatus includes sound reproduction units which respectively reproduce sound signals and are arranged so as to be separated from ear auricles of a headphone user, wherein each of the sound reproduction unit is configured by a speaker array including a plurality of speakers.
    Type: Grant
    Filed: February 16, 2012
    Date of Patent: November 17, 2015
    Assignee: Sony Corporation
    Inventors: Yuuji Yamada, Homare Kon
  • Patent number: 9159337
    Abstract: An apparatus for generating a high frequency audio signal that includes an analyzer for analyzing an input signal to determine a transient information adaptively. Additionally a spectral converter is provided for converting the input signal into an input spectral representation. A spectral processor processes the input spectral representation to generate a processed spectral representation including values for higher frequencies than the input spectral representation. A time converter is configured for converting the processed spectral representation to a time representation, wherein the spectral converter or the time converter are controllable to perform a frequency domain oversampling for the first portion of the input signal having the transient information associated and to not perform the frequency domain oversampling for the second portion of the input signal not having the associated transient information.
    Type: Grant
    Filed: May 25, 2010
    Date of Patent: October 13, 2015
    Assignees: Dolby International AB, Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Lars Villemoes, Per Ekstrand, Sascha Disch, Frederik Nagel, Stephan Wilde
  • Patent number: 9154898
    Abstract: A system and a method of improving sound image localization through cross-placement are provided. The system includes a first stereo system including a first left side speaker that is provided with a left side audio signal and a first right side speaker that is provided with a right side audio signal, and a second stereo system including a second left side speaker that is provided with a left side audio signal and a second right side speaker that is provided with a right side audio signal. The second right side speaker is provided adjacent to the first left side speaker and the second left side speaker is provided adjacent to the first right side speaker.
    Type: Grant
    Filed: November 26, 2013
    Date of Patent: October 6, 2015
    Inventor: Seon Joon Kim
  • Patent number: 9143878
    Abstract: An audio headset receives one or more audio signals carrying one or more audio channels and processes the audio channels to generate stereo signals for output to a left and a right speaker of the audio headset. The processing determines a number of the audio channels carried in the received audio signal(s), adjusts level(s) of the audio channels based on the determined number of audio channels and/or adjusts gain and/or phase of the audio channels to control a perceived location of a listener wearing the headset relative to a source of sounds carried in the stereo signals.
    Type: Grant
    Filed: October 7, 2014
    Date of Patent: September 22, 2015
    Assignee: Voyetra Turtle Beach, Inc.
    Inventors: Richard Kulavik, Shobha Devi Kuruba Buchannagari
  • Patent number: 9119011
    Abstract: In some embodiments, a method for rendering an object based audio program indicative of a trajectory of an audio source, including by generating speaker feeds for driving loudspeakers to emit sound intended to be perceived as emitting from the source, but with the source having a different trajectory than that indicated by the program. In other embodiments, a method for modifying (upmixing) an object based audio program indicative of a trajectory of an audio object within a subspace of a full volume, to determine a modified program indicative of a modified trajectory of the object such that at least a portion of the modified trajectory is outside the subspace. Other aspects include a system configured to perform, and a computer readable medium which stores code for implementing, any embodiment of the inventive method.
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: August 25, 2015
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Christophe Chabanne, Charles Q. Robinson
  • Patent number: 9107018
    Abstract: A sound reproduction system for reproducing an audio signal as originating from a first direction relative to a nominal position (211) and orientation of a listener is provided. The system comprises a first sound transducer arrangement (105) arranged to generate sound reaching the nominal position (211) from a first position corresponding to the first direction; and a second sound transducer arrangement (107) arranged to generate sound reaching the nominal position (211) from a second position corresponding to a different direction than the first direction. The arrangements may specifically be loudspeakers positioned at the given positions. A drive circuit (103) generates a first drive signal for the first sound transducer arrangement (105) and a second drive signal for the second sound transducer arrangement (107) from the audio signal. The first position and the second position are located on a sound cone of confusion for the nominal position (211) and the nominal direction.
    Type: Grant
    Filed: July 11, 2011
    Date of Patent: August 11, 2015
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: William John Lamb, Werner Paulus Josephus De Bruijn, Armin Gerhard Kohlrausch, Thomas Pieter Jan Peeters
  • Patent number: 9055157
    Abstract: An apparatus may include a hardware processor and a storage medium. The storage medium may be coupled to the processor, and may store instructions. When executed by the processor, the instructions may cause the apparatus to receive a direction signal indicating a first direction in which a head of a user is facing with respect to a fixed direction. The instructions may also cause the apparatus to convert the first direction in which the head is facing with respect to the fixed direction into a second direction in which the head is facing with respect to a third direction, connecting the head and an object. Additionally, the instructions may cause the apparatus to generate an audio signal having characteristics such that a sound generated from the audio signal is perceived by the user as arriving from the third direction.
    Type: Grant
    Filed: June 4, 2012
    Date of Patent: June 9, 2015
    Assignee: Sony Corporation
    Inventors: Yusuke Miyazawa, Yasushi Okumura
  • Patent number: 9042557
    Abstract: Provided is a method and apparatus for reproducing a three-dimensional (3D) sound field. A method of reproducing a 3D sound field may determine a control region based on a wavelength of an excitation frequency, set, based on a loudspeaker array, at least one candidate control point in the control region, and determine a non-uniform control point corresponding to a non-uniform loudspeaker.
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: May 26, 2015
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jeong Il Seo, Jae Hyoun Yoo, Kyeong Ok Kang, Min Cheol Shin, Filippo M Fazi, Philip A. Nelson
  • Patent number: 9036843
    Abstract: A system enhances spatialization in an audio signal at a receiving location. The system applies a phase difference analysis to signals received from an array of spaced apart input devices that convert sound into electrical signals. The system derives spatial or directional information about the relative locations of the sound sources. The converted signals may be mixed using weights derived from the spatial information to generate a multichannel output signal that, when processed by a remote or local audio system, generates a representation of the relative locations of the sound sources at the originating location at the receiving location.
    Type: Grant
    Filed: February 4, 2011
    Date of Patent: May 19, 2015
    Assignee: 2236008 Ontario, Inc.
    Inventors: Phillip A. Hetherington, Mark Fallat
  • Patent number: 9031242
    Abstract: This application relates to a system for fitting a hearing aid by testing the hearing aid patient with a three-dimensional sound field having one or more localized sound sources. In one embodiment, a signal processing system employing head-related transfer functions is used to produce audio signals that simulate a three-dimensional sound field when a sound source driven by such audio signals is coupled directly to one or both ears. By transmitting the audio signals produced by the signal processing system to the hearing aid by means of a wired or wireless connection, the hearing aid itself may be used as the sound source.
    Type: Grant
    Filed: November 6, 2007
    Date of Patent: May 12, 2015
    Assignee: Starkey Laboratories, Inc.
    Inventors: Brent Edwards, William S. Woods
  • Patent number: 9031268
    Abstract: Devices and methods are adapted to characterize a multi-channel loudspeaker configuration, to correct loudspeaker/room delay, gain and frequency response or to configure sub-band domain correction filters.
    Type: Grant
    Filed: May 9, 2011
    Date of Patent: May 12, 2015
    Assignee: DTS, Inc.
    Inventors: Zoran Fejzo, James D. Johnston
  • Patent number: 9025774
    Abstract: Provided is an apparatus, method and computer-readable medium generating a vertical direction virtual channel that may apply a vertical direction spectrum shape to a source signal, and generate a vertical direction virtual speaker signal by adjusting a gain with respect to a signal in which the vertical direction spectrum shape is applied, based on virtual speaker direction information.
    Type: Grant
    Filed: November 1, 2010
    Date of Patent: May 5, 2015
    Assignee: Samsung Electronics Co., ,Ltd.
    Inventors: Kang Eun Lee, Do Hyung Kim
  • Patent number: 9025775
    Abstract: An apparatus for enhancing a multichannel audio signal comprising at least two channels configured to: estimate a value representing a direction of arrival associated with a first audio signal from at least a first channel and a second audio signal from at least a second channel of at least two channels of a multichannel audio signal; determine a scaling factor dependent on the direction of arrival associated with the first audio signal and the second audio signal; and apply the scaling factor to a parameter associated with a difference in audio signal levels between the first audio signal and the second audio sign.
    Type: Grant
    Filed: July 1, 2008
    Date of Patent: May 5, 2015
    Assignee: Nokia Corporation
    Inventor: Pasi Ojala
  • Publication number: 20150092965
    Abstract: Aspects of the present disclosure relate to techniques for processing a source audio signal in order to localize sounds. In particular, aspects of the present disclosure relate to sound localization techniques which externalize sounds for headphone audio, such as a virtual surround sound headphone system. In various implementations, room reverberations and other acoustic effects of the environment may be more accurately modeled using improved room reverberation models. For example, in some implementations, the underlying source signal may be filtered with a filter representing a room impulse response that is a combination of a stereo room impulse response and a mono room impulse response. By way of further example, in some implementations the source signal may be filtered with a combined impulse response filter that is derived from binaural recordings of simulated impulses recorded in a desired reverberant environment.
    Type: Application
    Filed: September 26, 2014
    Publication date: April 2, 2015
    Inventors: Frederick Umminger, Scott Wardle
  • Patent number: 8976972
    Abstract: Processing of sound data encoded in a sub-band domain, for dual-channel playback of binaural or Transaural® type is provided, in which a matrix filtering is applied so as to pass from a sound representation with N channels with N>0, to a dual-channel representation. This sound representation with N channels comprises considering N virtual loudspeakers surrounding the head of a listener, and, for each virtual loudspeaker of at least some of the loudspeakers: a first transfer function specific to an ipsilateral path from the loudspeaker to a first ear of the listener, facing the loudspeaker, and a second transfer function specific to a contralateral path from said loudspeaker to the second ear of the listener, masked from the loudspeaker by the listener's head. The matrix filtering comprises a multiplicative coefficient defined by the spectrum, in the sub-band domain, of the second transfer function deconvolved with the first transfer function.
    Type: Grant
    Filed: October 8, 2010
    Date of Patent: March 10, 2015
    Assignee: Orange
    Inventors: Marc Emerit, Rozenn Nicol, Grégory Pallone
  • Patent number: 8971542
    Abstract: A sound reproduction apparatus comprising a loudspeaker bar having a plurality of loudspeakers. A loudspeaker bar controller coupled to the loudspeaker bar for processing audio data for the plurality of loudspeakers, the loudspeaker bar controller comprising a spatial enhancement/virtualization system for receiving a surround channel of audio data and processing the surround channel of audio data with a spatial generation/virtualization filter, wherein a left stereo channel of audio data and a right stereo channel of audio data are not processed with the head related transfer function filter. Bass is enhanced for small speakers which are not able to produce bass frequencies.
    Type: Grant
    Filed: April 21, 2011
    Date of Patent: March 3, 2015
    Assignee: Conexant Systems, Inc.
    Inventors: Harry K. Lau, Yair Kerner, Jonathan Chien, James W. Wihardja
  • Patent number: 8965000
    Abstract: A method and system for applying reverb to an M-channel downmixed audio input signal indicative of X individual audio channels, where X is greater than M. Typically, the method includes steps of: in response to spatial cue parameters indicative of spatial image of the downmixed input signal, generating Y discrete reverb channel signals, where each of the reverb channel signals at a time, t, is a linear combination of at least a subset of values of the individual audio channels at the time, t, and individually applying reverb to each of at least two of the reverb channel signals, thereby generating Y reverbed channel signals.
    Type: Grant
    Filed: December 16, 2009
    Date of Patent: February 24, 2015
    Assignee: Dolby International AB
    Inventor: Jonas Engdegard
  • Patent number: 8965015
    Abstract: The present invention discloses a signal processing method, system and apparatus for 3-dimensional (3D) audio conferencing. The implementation is: a server obtains at least one audio stream relative to one terminal; the server allocates identifiers for the obtained at least one audio stream relative to the terminal; and the server combines the obtained at least one audio stream and the identifiers of the at least one audio stream and sends the combination to the terminal. With the technical solution of the present invention, the issue of excessive transmission channels required in the prior art is resolved and the terminal is capable of determining the sound image positions of other terminals freely.
    Type: Grant
    Filed: April 20, 2011
    Date of Patent: February 24, 2015
    Assignee: Huawei Device Co., Ltd.
    Inventors: Wuzhou Zhan, Dongqi Wang
  • Patent number: 8958567
    Abstract: In some embodiments, a method applying reverberation to audio from at least one client of a set of clients which share a virtual environment, including by asserting position data and at least one input audio stream to a server, selecting (in the server) a reverberation filter for each input audio stream in response to the position data and generating wet audio by applying to the input audio an early reverberation part of the selected reverberation filter. Typically, a client applies a late reverberation filter to the wet audio using metadata from the server. In other embodiments, a server selects a reverberation filter for application to audio in response to position data, asserts the audio and metadata indicative of the filter, and a client applies the filter to the audio using the metadata. Other aspects are systems, servers, and client devices configured to perform any embodiment of the method.
    Type: Grant
    Filed: June 5, 2012
    Date of Patent: February 17, 2015
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Nicolas R. Tsingos, Micah Taylor
  • Patent number: 8958585
    Abstract: Multiple independent sound images are formed by integrally performing uncorrelation processing and sound image localization processing on an input audio signal with signal processors that use output functions hl(x) and hr(x) obtained by integrating an uncorrelation function that generate multiple audio signals with low mutual correlation from an input audio signal. The signal processors have a sound image localization function for localizing the sound image of each of the multiple audio signals at a given sound source position.
    Type: Grant
    Filed: June 17, 2005
    Date of Patent: February 17, 2015
    Assignee: Sony Corporation
    Inventors: Yuji Yamada, Koyuru Okimoto
  • Patent number: 8958583
    Abstract: An audio processing system may modify an input surround sound signal to generate a spatially equilibrated output surround sound signal that is perceived by a user as spatially constant for different sound pressures of the surround sound signal. The audio processing system may determine based on a psychoacoustic model of human hearing, a loudness and a localization for a combined sound signal. The loudness and the localization may be determined by the system for a virtual user located between the front and the rear loudspeakers that has a predetermined head position in which one ear of the virtual user is directed towards one of front or rear loudspeakers and the other ear of the virtual user being directed towards the other of the front or rear loudspeakers. The audio processing system may adapt the front and/or rear audio signal channels based on the determined loudness and localization.
    Type: Grant
    Filed: March 24, 2012
    Date of Patent: February 17, 2015
    Assignee: Harman Becker Automotive Systems GmbH
    Inventor: Wolfgang Hess
  • Patent number: 8929572
    Abstract: A method and apparatus of expanding a listening sweet spot. A method of expanding a listening sweet spot with respect to signals output from speakers includes: obtaining an HRTF (head related transfer function) at a position of a listener's ear; moving a first virtual ear around the position of the listener's ear; obtaining an HRTF at each position of the first virtual ear; and processing a signal to be input to the speakers using the obtained HRTFs to output to the speakers.
    Type: Grant
    Filed: November 28, 2006
    Date of Patent: January 6, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Youngtae Kim, Sangchul Ko, Jungho Kim
  • Patent number: 8930197
    Abstract: A method comprising receiving at a user equipment encrypted content. The content is stored in said user equipment in an encrypted form. At least one key for decryption of said stored encrypted content is stored in the user equipment.
    Type: Grant
    Filed: May 9, 2008
    Date of Patent: January 6, 2015
    Assignee: Nokia Corporation
    Inventors: Anssi Ramo, Mikko Tammi, Adriana Vasilache, Lasse Laaksonen
  • Patent number: 8923536
    Abstract: A method and apparatus for localizing a sound image of an input signal to a spatial position are provided. The method of localizing a sound image to a spatial position includes: extracting from a head related impulse response (HRIR) measured with respect to changes in the position of a sound source, first information indicating a reflection sound wave reflected by the body of a listener; extracting from the HRIR second information indicating the difference between sound pressures generated in two ears, respectively, when a direct sound wave generated from the position of the sound source arrives at the two ears, respectively, of the listener; extracting third information indicating the difference between times taken by the direct sound wave to arrive at the two ears, respectively, from the HRIR; and localizing a sound image of an input signal to a spatial position by using the extracted information.
    Type: Grant
    Filed: August 13, 2007
    Date of Patent: December 30, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young-tae Kim, Sang-wook Kim, Jung-ho Kim, Sang-chul Ko
  • Publication number: 20140375531
    Abstract: A method of presenting the user with a picture from the screen of a smart phone or tablet at a wide angle of view, consisting in that fixing a smart phone or tablet on the head in front of user's eyes, mounting the smart phone screen in front of the user's eyes to the line of sight, providing an optical means for obtaining an image sharpness, displaying an image which is the one selected from the group consisting images, videos, virtual space, or other applications. A method of providing sound to each of the user's ears in a virtual reality application, consisting in that mounting stereo headphones on the user's head, calculating a sound level provided for each of the user's ears so as the sound propagated and attenuated in a real space with the corresponding position and orientation of the user in regard to the sound source.
    Type: Application
    Filed: June 24, 2013
    Publication date: December 25, 2014
    Inventors: Ray Latypov, Nurali Latypov, Alfred Latypov
  • Patent number: 8912929
    Abstract: Detection precision is improved by reducing a detection error of a change in position of a target. A correction value derivation apparatus is provided for deriving a correction value used in correction of a displacement amount derived based on an encoder signal indicating a change in position of a movable portion as a target. A displacement amount derivation unit is configured to derive a detected displacement amount of the movable portion based on the encoder signal. A displacement velocity derivation unit is configured to derive a detected displacement velocity based on the detected displacement amount derived by the displacement amount derivation unit. An average displacement velocity calculation unit is configured to calculate an average displacement velocity over a predetermined displacement range. A correction value derivation unit is configured to derive the correction value based on the detected displacement velocity and the average displacement velocity.
    Type: Grant
    Filed: June 24, 2013
    Date of Patent: December 16, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Masahiko Mizoguchi