Patents Examined by David L Ton
  • Patent number: 10419865
    Abstract: Aspects of the subject disclosure may include, for example, embodiments receiving audio content in a multi-channel sound format over a communication network resulting in multi-channel audio content. Further embodiments can include identifying a compression ratio of the audio content. Additional embodiments can include determining a rendered sound externalization for rendering the audio content according to the compression ratio of the audio content. Also, embodiments can include rendering the audio content in a binaural audio format for headphone playback on an audio device according to the rendered sound externalization. Other embodiments are disclosed.
    Type: Grant
    Filed: October 12, 2018
    Date of Patent: September 17, 2019
    Assignee: The DIRECTV Group, Inc.
    Inventor: Manuel Briand
  • Patent number: 10403300
    Abstract: A system and associated method for estimating one or more reverberation parameters includes an adaptive, parametric, linear prediction filter having one or more power spectral density (PSD) estimates of signals of one or more channels as inputs. The prediction filter estimates at least one parameter related to reverberation time, such as T60, and can further estimate an additional parameter, such as Direct-to-Reverberant Ratio (DRR). The prediction filter may be adapted during a period of reverberation by minimizing a cost function. Adaptation can include using a gradient descent approach, which can operate according to a step size provided by an adaptation controller configured to determine the period of reverberation. One or more microphones can provide the signals. The reverberation parameters estimated can be applied to a reverberation suppressor, with an estimator that does not require a training phase and without relying on assumptions of the user's position relative to the microphones.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: September 3, 2019
    Assignee: Nuance Communications, Inc.
    Inventors: Tobias Wolff, Naveen Kumar Desiraju
  • Patent number: 10381996
    Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for changing a distributed mode loudspeaker's fundamental frequency. One of the systems includes a distributed mode loudspeaker comprising an actuator that includes: a supported portion, and a cantilevered portion having a length, a first fundamental frequency, and adapted to create a force to cause vibration of a load to generate sound waves using the first fundamental frequency; a support element connected to the supported portion of the actuator and adapted to adjust, based on a change to a shape of the support element, a size of the length of the cantilevered portion to change the first fundamental frequency to a second fundamental frequency with which the load will generate sound waves; and a frequency selection module that provides a signal to the support element to cause the support element to change shape.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: August 13, 2019
    Assignee: NVF Tech Ltd
    Inventors: Graham Robert Landick, Neil John Harris
  • Patent number: 10382875
    Abstract: The present disclosure relates to reverberation generation for headphone virtualization. A method of generating one or more components of a binaural room impulse response (BRIR) for headphone virtualization is described. In the method, directionally-controlled reflections are generated, wherein directionally-controlled reflections impart a desired perceptual cue to an audio input signal corresponding to a sound source location. Then at least the generated reflections are combined to obtain the one or more components of the BRIR. Corresponding system and computer program products are described as well.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: August 13, 2019
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Louis D. Fielder, Zhiwei Shuang, Grant A. Davidson, Xiguang Zheng, Mark S. Vinton
  • Patent number: 10375496
    Abstract: Methods for dialog enhancing audio content, comprising providing a first audio signal presentation of the audio components, providing a second audio signal presentation, receiving a set of dialog estimation parameters configured to enable estimation of dialog components from the first audio signal presentation, applying said set of dialog estimation parameters to said first audio signal presentation, to form a dialog presentation of the dialog components; and combining the dialog presentation with said second audio signal presentation to form a dialog enhanced audio signal presentation for reproduction on the second audio reproduction system, wherein at least one of said first and second audio signal presentation is a binaural audio signal presentation.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: August 6, 2019
    Assignees: Dolby Laboratories Licensing Corporation, Dolby International AB
    Inventors: Leif Jonas Samuelsson, Dirk Jeroen Breebaart, David Matthew Cooper, Jeroen Koppens
  • Patent number: 10375494
    Abstract: A microphone test device is provided to test a sound-receiving function of an under-test microphone. The microphone test device includes a test platform, a standard speaker module, a fixing mechanism and a pedestal. A sleeve of the standard speaker module includes a cone-shaped channel. A test acoustic wave from the standard speaker is centralized by the cone-shaped channel. Consequently, the interference of the acoustic wave reflection phenomenon is effectively reduced.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: August 6, 2019
    Assignee: PRIMAX ELECTRONICS LTD
    Inventor: Jun-Hsueh Chou
  • Patent number: 10374564
    Abstract: Loudness control systems or methods may normalize audio signals to a predetermined loudness level. If the audio signal includes moderate background noise, then the background noise may also be normalized to the target loudness level. Noise signals may be detected using content-versus-noise classification, and a loudness control system or method may be adjusted based on the detection of noise. Noise signals may be detected by signal analysis in the frequency domain or in the time domain. Loudness control systems may also produce undesirable audio effects when content shifts from a high overall loudness level to a lower overall loudness level. Such loudness drops may be detected, and the loudness control system may be adjusted to minimize the undesirable effects during the transition between loudness levels.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: August 6, 2019
    Assignee: DTS, Inc.
    Inventors: Brandon Smith, Aaron Warner, Jeff Thompson
  • Patent number: 10375504
    Abstract: There is a need to enable a wireless device to output signals such that the natural instincts of the user may be triggered. The present disclosure provides a solution by enabling a wireless device to determine a time delay and intensity difference associated with an audio output at a subset output devices based at least in part on a perceived spatial placement of at least one signal, a position of the transmitting device, and/or a signal strength associated with the signal. Using the time delay and the intensity difference, the output devices farthest from the transmitting device may output the at least one signal using the time delay and the intensity difference such that the user may detecting differences in the sound wave's time of arrival and intensity at the left ear versus the right ear, and thus, perceive the location of the audio source.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: August 6, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Srivathsa Sridhara, Ravi Shekhar, Vishal Agarwal, Giriraj Goyal
  • Patent number: 10362433
    Abstract: An electronic device providing a smart sound mode is provided. The electronic device includes: a user command receiver; an inputter; an outputter; and a processor configured to: in response to a predetermined event occurring, provide a user interface (UI) for guiding setting of a smart sound mode; in response to the smart sound mode being selected according to a user command input through the user command receiver, individually render a first sound signal which is a common component among a plurality of channels forming the sound signal and a second sound signal which is a differential component among the plurality of channels based on whether the first sound signal comprises a voice and whether the second sound signal comprise a sound effect, mix the first and second sound signals which are rendered into a multi-channel sound signal and control the outputter to output the multi-channel sound signal.
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: July 23, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jae-youn Cho, Sun-min Kim, Ki-beom Kim, Ki-woong Kang, Dong-hyun Lim, In-woo Hwang
  • Patent number: 10357403
    Abstract: An improved wireless communications earplug for use with a magnetic field transmitter. The wireless earplug has a receiver made of a coil of wire on a magnetic bobbin, mounted in close proximity or in contact with a magnetic case of a speaker. The magnetic case of the speaker serves to increase the magnetic flux through the receiver and improves the efficiency of the earplug. The speaker is acoustically coupled to an eartip, and the earplug may be molded into a custom earplug body.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: July 23, 2019
    Assignee: Red Tail Hawk Corporation
    Inventor: John W. Parkins
  • Patent number: 10362426
    Abstract: Example embodiments disclosed herein relates to upmixing of audio signals. A method of upmixing an audio signal is described. The method includes decomposing the audio signal into a diffuse signal and a direct signal, generating an audio bed at least in part based on the diffuse signal, the audio bed including a height channel, extracting an audio object from the direct signal, estimating metadata of the audio object, the metadata including height information of the audio object; and rendering the audio bed and the audio object as an upmixed audio signal, wherein the audio bed is rendered to a predefined position and the audio object is rendered according to the metadata. Corresponding system and computer program product are described as well.
    Type: Grant
    Filed: February 9, 2016
    Date of Patent: July 23, 2019
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Jun Wang, Lie Lu, Lianwu Chen, Mingqing Hu
  • Patent number: 10362423
    Abstract: A stereo parameter conditioner performs a conditioning operation on a first value of a stereo parameter and a second value of the stereo parameter to generate a conditioned value of the stereo parameter. The first value is associated with a first frequency range, and the second value is associated with a second frequency range. The conditioned value is associated with a particular frequency range that is a subset of the first frequency range or a subset of the second frequency range.
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: July 23, 2019
    Assignee: Qualcomm Incorporated
    Inventors: Venkata Subrahmanyam Chandra Sekhar Chebiyyam, Venkatraman Atti
  • Patent number: 10356525
    Abstract: A method for calibrating a microphone that includes a transducer element and an ASIC. The method includes calibrating the frequency characteristic of the ASIC such that the sensitivity (Smic(fLLF)) of the microphone at a predetermined cutoff frequency (fLLF) shows a predefined reduction (?) compared to the sensitivity (Smic(fstandard)) of the microphone at a standard frequency (fstandard). Another aspect of the present invention concerns a microphone.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: July 16, 2019
    Assignee: TDK Corporation
    Inventor: Gino Rocca
  • Patent number: 10356523
    Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for selecting distributed mode loudspeaker electrodes using an output frequency. One of the methods includes determining, for a piezoelectric transducer, a subset of frequencies, from a range of frequencies, at which to output a sound; selecting, based on the subset of frequencies, one or more electrode pairs from two or more electrode pairs included in the piezoelectric transducer to generate the sound; and providing, by a drive module connected to each of the two or more electrode pairs, current to each of the selected one or more electrode pairs to cause the piezoelectric transducer to generate a force that, when provided to a load, causes the load to generate the sound within the subset of frequencies.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: July 16, 2019
    Assignee: NVF Tech Ltd
    Inventor: Neil John Harris
  • Patent number: 10347261
    Abstract: Exemplary embodiments provide encoding and decoding methods, and associated encoders and decoders, for encoding and decoding of an audio scene which at least comprises one or more audio objects (106a). The encoder (108, 110) generates a bit stream (116) which comprises downmix signals (112) and side information which includes individual matrix elements (114) of a reconstruction matrix which enables reconstruction of the one or more audio objects (106a) in the decoder (120).
    Type: Grant
    Filed: June 21, 2018
    Date of Patent: July 9, 2019
    Assignee: Dolby International AB
    Inventors: Heiko Purnhagen, Lars Villemoes, Leif Jonas Samuelsson, Toni Hirvonen
  • Patent number: 10341802
    Abstract: Currently there is no simple and satisfying way to create 3D audio from existing 2D content. The conversion from 2D to 3D sound should spatially redistribute the sound from existing channels. From a multi-channel 2D audio input signal (x(k)(t)) a 3D sound representation is generated which includes an HOA representation Formula (I) and channel object signals Formula (II) scaled from channels of the 2D audio input signal. Additional signals Formula (III) placed in the 3D space are generated by scaling (21, 222; 41, 422; Formula (IV)) channels from the 2D audio input signal and by decorrelating (24, 25; 44, 45, 451; Formula (V)) a scaled version of a mix of channels from the 2D audio input signal, whereby spatial positions for the additional signals are predetermined. The additional signals Formula (III) are converted (27; 47) to a HOA representation Formula (I).
    Type: Grant
    Filed: November 11, 2016
    Date of Patent: July 2, 2019
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Alexander Krueger, Johannes Boehm, Sven Kordon, Xiaoming Chen, Stefan Abeling, Florian Keiler, Holger Kropp
  • Patent number: 10331403
    Abstract: An audio input system includes an audio input apparatus and a plurality of electronic devices. The audio input apparatus includes an audio input unit, a start instruction accepting unit, and an instruction transmitter. The plurality of electronic devices includes a first electronic device. The first electronic device is a target of a process execution instruction based on the audio input by the audio input unit among the instructions. The instruction transmitter transmits a process reducing instruction for reducing an execution of a process as the instruction to the plurality of electronic devices, when an input sound volume of a microphone exceeds a specific sound volume. The audio input unit starts the audio input when the input sound volume of the microphone is equal to or less than the specific sound volume. The instruction transmitter transmits the process execution instruction to the first electronic device.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: June 25, 2019
    Assignee: Kyocera Document Solutions Inc.
    Inventor: Kazuki Dozen
  • Patent number: 10332529
    Abstract: A method and device are disclosed for determining an inter-channel time difference of a multi-channel audio signal having at least two channels. A determination is made at a number of consecutive time instances, inter-channel correlation based on a cross-correlation function involving at least two different channels of the multi-channel audio signal. Each value of the inter-channel correlation is associated with a corresponding value of the inter-channel time difference. An adaptive inter-channel correlation threshold is adaptively determined based on adaptive smoothing of the inter-channel correlation in time. A current value of the inter-channel correlation is then evaluated in relation to the adaptive inter-channel correlation threshold to determine whether the corresponding current value of the inter-channel time difference is relevant. Based on the result of this evaluation, an updated value of the inter-channel time difference is determined.
    Type: Grant
    Filed: November 14, 2016
    Date of Patent: June 25, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Manuel Briand, Tomas Jansson Toftgård
  • Patent number: 10325606
    Abstract: A stereo sound signal encoding method and system for time domain down mixing right and left channels of an input stereo sound signal into primary and secondary channels, determine normalised correlations of the left channel and right channel in relation to a monophonic signal version of the sound. A long-term correlation difference is determined on the basis of the normalised correlation of the left channel and the normalised correlation of the right channel. The long-term correlation difference is converted into a factor ?, and the left and right channels are mixed to produce the primary and secondary channels using the factor ?, wherein the factor ? determines respective contributions of the left and right channels upon production of the primary and secondary channels.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: June 18, 2019
    Assignee: VoiceAge Corporation
    Inventors: Tommy Vaillancourt, Milan Jelinek
  • Patent number: 10306393
    Abstract: The invention discloses rendering sound field signals, such as Higher-Order Ambisonics (HOA), for arbitrary loudspeaker setups, where the rendering results in highly improved localization properties and is energy preserving. This is obtained by a new type of decode matrix for sound field data, and a new way to obtain the decode matrix.
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: May 28, 2019
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Johannes Boehm, Florian Keiler