Gain Control Patents (Class 704/225)
  • Patent number: 11222643
    Abstract: Apparatus for decoding an encoded audio signal including an encoded core signal and parametric data, including: a core decoder for decoding the encoded core signal to obtain a decoded core signal; an analyzer for analyzing the decoded core signal before or after performing a frequency regeneration operation to provide an analysis result; and a frequency regenerator for regenerating spectral portions not included in the decoded core signal using a spectral portion of the decoded core signal, the parametric data, and the analysis result.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: January 11, 2022
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Sascha Disch, Ralf Geiger, Christian Helmrich, Frederik Nagel, Christian Neukam, Konstantin Schmidt, Michael Fischer
  • Patent number: 11223340
    Abstract: Methods, apparatus, systems and articles of manufacture are disclosed to adjust audio playback settings. Example apparatus disclosed herein include an equalization (EQ) model query generator to generate a query to a neural network, the query including a representation of a sample of an audio signal; an EQ filter settings analyzer to: access a plurality of audio playback settings determined by the neural network based on the query; and determine a filter coefficient to apply to the audio signal based on the plurality of audio playback settings; an EQ personalization manager to; generate a personalized EQ setting; and an EQ adjustment implementor to: blend the personalized EQ setting and the filter coefficient to generate a blended equalization; and apply the blended equalization to the audio signal in a first duration.
    Type: Grant
    Filed: October 23, 2019
    Date of Patent: January 11, 2022
    Assignee: GRACENOTE, INC.
    Inventors: Robert Coover, Cameron Aubrey Summers, Joseph Renner, Markus Cremer, Warren Mansfield, Matthew McCallum
  • Patent number: 11218125
    Abstract: Methods, apparatus, systems and articles of manufacture are disclosed to adjust audio playback settings based on analysis of audio characteristics. Example apparatus disclosed herein include an equalization (EQ) model query generator to generate a query to a neural network, the query including a representation of a sample of an audio signal; an EQ filter settings analyzer to: access a plurality of audio playback settings determined by the neural network based on the query; and determine a filter coefficient to apply to the audio signal based on the plurality of audio playback settings; and an EQ adjustment implementer to apply the filter coefficient to the audio signal in a first duration.
    Type: Grant
    Filed: October 23, 2019
    Date of Patent: January 4, 2022
    Assignee: GRACENOTE, INC
    Inventors: Robert Coover, Cameron Aubrey Summers, Todd Hodges, Joseph Renner, Markus Cremer, Matthew McCallum
  • Patent number: 11195538
    Abstract: An audio signal transmission device for encoding an audio signal includes an audio encoding unit that encodes an audio signal and a side information encoding unit that calculates and encodes side information from a look-ahead signal. An audio signal receiving device for decoding an audio code and outputting an audio signal includes: an audio code buffer that detects packet loss based on a received state of an audio packet, an audio parameter decoding unit that decodes an audio code when an audio packet is correctly received, a side information decoding unit that decodes a side information code when an audio packet is correctly received, a side information accumulation unit that accumulates side information obtained by decoding a side information code, an audio parameter missing processing unit that outputs an audio parameter upon detection of audio packet loss, and an audio synthesis unit that synthesizes decoded audio from the audio parameter.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: December 7, 2021
    Assignee: NTT DOCOMO, INC.
    Inventors: Kimitaka Tsutsumi, Kei Kikuiri, Atsushi Yamaguchi
  • Patent number: 11183199
    Abstract: An apparatus for decomposing an audio signal into a background component signal and a foreground component signal includes: a block generator for generating a time sequence of blocks of audio signal values; an audio signal analyzer for determining a block characteristic of a current block of the audio signal and for determining an average characteristic for a group of blocks, the group of blocks including at least two blocks; and a separator for separating the current block into a background portion and a foreground portion in response to a ratio of the block characteristic of the current block and the average characteristic of the group of blocks, wherein the background component signal includes the background portion of the current block and the foreground component signal includes the foreground portion of the current block.
    Type: Grant
    Filed: May 17, 2019
    Date of Patent: November 23, 2021
    Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
    Inventors: Alexander Adami, Jürgen Herre, Sascha Disch, Florin Ghido
  • Patent number: 11163049
    Abstract: Sensors, sensor controllers, and sensor control methods may employ an echo-magnification technique to improve threshold-based echo detection. In one illustrative embodiment, a sensor controller includes: a transmitter, a receiver, and a processing circuit coupled to the transmitter and to the receiver. The transmitter drives a piezoelectric element to generate acoustic bursts. The receiver senses a response of the piezoelectric element to echoes of each acoustic burst. The processing circuit is operable to apply echo-detection processing to the response by: identifying an interval of the response representing at least a portion of a potential echo; deriving a modified response from the response by selectively magnifying the response during said interval; and using the modified response to detect an echo.
    Type: Grant
    Filed: August 2, 2019
    Date of Patent: November 2, 2021
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Marek Hustava, Michal Navratil, Pavel Kostelnik
  • Patent number: 11158331
    Abstract: An audio signal transmission device for encoding an audio signal includes an audio encoding unit that encodes an audio signal and a side information encoding unit that calculates and encodes side information from a look-ahead signal. An audio signal receiving device for decoding an audio code and outputting an audio signal includes: an audio code buffer that detects packet loss based on a received state of an audio packet, an audio parameter decoding unit that decodes an audio code when an audio packet is correctly received, a side information decoding unit that decodes a side information code when an audio packet is correctly received, a side information accumulation unit that accumulates side information obtained by decoding a side information code, an audio parameter missing processing unit that outputs an audio parameter upon detection of audio packet loss, and an audio synthesis unit that synthesizes decoded audio from the audio parameter.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: October 26, 2021
    Assignee: NTT DOCOMO, INC.
    Inventors: Kimitaka Tsutsumi, Kei Kikuiri, Atsushi Yamaguchi
  • Patent number: 11140264
    Abstract: A method may include obtaining a first audio signal including first speech originating at a remote device during a communication session between the remote device and a communication device and obtaining a second audio signal including second speech originating at the communication device during the communication session between the remote device and the communication device. The method may also include obtaining a characteristic of the communication session from one or more of: the first audio signal, the second audio signal, and settings of the communication device and determining a hearing level of a user of the communication device using the characteristic of the communication session.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: October 5, 2021
    Assignee: Sorenson IP Holdings, LLC
    Inventor: David Thomson
  • Patent number: 11114115
    Abstract: In an example implementation according to aspects of the present disclosure, a method may include identifying, via a first microphone of a device, when a user registered to use the device is speaking, and comparing a voice characteristic of the user, as detected by the first microphone, against a threshold value. If the voice characteristic exceeds the threshold value, the method may include unmuting a second microphone of the device for the user to participate in a teleconference.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: September 7, 2021
    Assignee: Hewlett-Packard Deveopment Company, L.P.
    Inventor: Mohit Gupta
  • Patent number: 11037564
    Abstract: A robot apparatus including an input unit to receive a voice command from a user, a determination unit to determine whether a voice command is repeated a predetermined number of times, and a control unit to register a shortcut command to shorten a voice command if it is determined a voice command is repeated a predetermined number of times. A shortcut command to shorten a voice command of a user is generated, and thus user convenience is enhanced.
    Type: Grant
    Filed: October 7, 2019
    Date of Patent: June 15, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Hyun-Ryong Jung
  • Patent number: 10971173
    Abstract: Coordinating signal processing among computing devices in a voice-driven computing environment is provided. A first and second digital assistant can detect an input audio signal, perform a signal quality check, and provide indications that the first and second digital assistants are operational to process the input audio signal. A system can select the first digital assistant for further processing. The system can receive, from the first digital assistant, data packets including a command. The system can generate, for a network connected device selected from a plurality of network connected devices, an action data structure based on the data packets, and transmit the action data structure to the selected network connected device.
    Type: Grant
    Filed: April 2, 2018
    Date of Patent: April 6, 2021
    Assignee: GOOGLE LLC
    Inventors: Anshul Kothari, Gaurav Bhaya, Tarun Jain
  • Patent number: 10666623
    Abstract: Provided are methods and systems of using division-free duplexing (DFD) in a cable communication network. Techniques for applying DFD in a cable communication network may enable data to be transmitted and received over a coaxial cable without using division duplexing techniques. For example, the cable communication network may include DFD enabled network nodes and each subscriber to the cable network may be equipped with a DFD system configured to operate in a DFD mode. In some embodiments, oppositely propagating signals may be transmitted over one frequency channel, and DFD techniques may be used to recover originally transmitted signals. Further, in some embodiments, DFD techniques may be used with encryption methods to increase the security of data transmitted in the cable communication network.
    Type: Grant
    Filed: June 9, 2014
    Date of Patent: May 26, 2020
    Assignee: General Electric Company
    Inventors: John Anderson Fergus Ross, Michael James Hartman, John Erik Hershey, Richard Louis Zinser
  • Patent number: 10652369
    Abstract: An apparatus and method for broadcast signal frame using layered division multiplexing are disclosed. An apparatus for generating broadcast signal frame according to an embodiment of the present invention includes a combiner configured to generate a multiplexed signal by combining a core layer signal and an enhanced layer signal at different power levels; a power normalizer configured to reduce the power of the multiplexed signal to a power level corresponding to the core layer signal; a time interleaver configured to generate a time-interleaved signal by performing interleaving that is applied to both the core layer signal and the enhanced layer signal; and a frame builder configured to generate a broadcast signal frame including a preamble for signaling time interleaver information shared by the core layer signal and the enhanced layer signal, using the time-interleaved signal.
    Type: Grant
    Filed: January 7, 2016
    Date of Patent: May 12, 2020
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jae-Young Lee, Heung-Mook Kim, Sung-Ik Park, Sun-Hyoung Kwon
  • Patent number: 10523387
    Abstract: A system and method for transmitting a plurality of signals. The system includes a transmitting terminal configured to obtain and pack the plurality of signals in multiple signal sequences, with each of the plurality of signals having respective predefined periods. A receiving terminal is configured to receive and unpack the multiple signal sequences from the transmitting terminal. A controller is in communication with the transmitting terminal and the receiving terminal and configured to store a look-up table. The look-up table includes a respective pre-identifier and respective identifier for each of the plurality of signals. The controller is configured to determine if the respective predefined periods vary in magnitude within a frame. If so, the controller is configured to obtain the respective pre-identifiers and respective identifiers for each of the plurality of signals. The multiple signal sequences are based at least partially on the respective pre-identifiers and the respective identifiers.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: December 31, 2019
    Assignee: GM Global Technology Operations LLC
    Inventors: Prathap Venugopal, Unmesh Dutta Bordoloi, Soheil Samii, Prachi Joshi
  • Patent number: 10504510
    Abstract: A method or associated system for motion adaptive speech processing includes dynamically estimating a motion profile that is representative of a user's motion based on data from one or more resources, such as sensors and non-speech resources, associated with the user. The method includes effecting processing of a speech signal received from the user, for example, while the user is in motion, the processing taking into account the estimated motion profile to produce an interpretation of the speech signal. Dynamically estimating the motion profile can include computing a motion weight vector using the data from the one or more resources associated with the user, and can further include interpolating a plurality of models using the motion weight vector to generate a motion adaptive model. The motion adaptive model can be used to enhance voice destination entry for the user and re-used for other users who do not provide motion profiles.
    Type: Grant
    Filed: June 10, 2015
    Date of Patent: December 10, 2019
    Assignee: Cerence Operating Company
    Inventors: Munir Nikolai Alexander Georges, Josef Damianus Anastasiadis, Oliver Bender
  • Patent number: 10490199
    Abstract: A signal decoding method and device, where the method includes decoding a bit stream of a voice signal or an audio signal to acquire a decoded signal, predicting an excitation signal of an extension band according to the decoded signal, where the extension band is adjacent to a band of the decoded signal, and the band of the decoded signal is lower than the extension band; selecting a first band and a second band from the decoded signal, and predicting a spectral envelope of the extension band according to a spectral coefficient of the first band and a spectral coefficient of the second band; and determining a frequency-domain signal of the extension band according to the spectral envelope of the extension band and the excitation signal of the extension band.
    Type: Grant
    Filed: February 12, 2018
    Date of Patent: November 26, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Zexin Liu, Lei Miao
  • Patent number: 10438589
    Abstract: A robot apparatus including an input unit to receive a voice command from a user, a determination unit to determine whether a voice command is repeated a predetermined number of times, and a control unit to register a shortcut command to shorten a voice command if it is determined a voice command is repeated a predetermined number of times. A shortcut command to shorten a voice command of a user is generated, and thus user convenience is enhanced.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: October 8, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Hyun-ryong Jung
  • Patent number: 10428813
    Abstract: There is provided a state-monitory system of a moving apparatus which is capable of deducing an abnormality and cause of breakdown of the moving apparatus by Equationematical analysis only by measuring vibration of a casing or object to be monitored and which requires no large-scaled apparatus. An equivalent model of the moving apparatus 1 is formed, which is adapted to replace the vibration of a monitored object of the moving apparatus 1 with the vibration of a viscoelastic member such as an elastic spring etc. and which is adapted to be capable of outputting virtual vibration data having synthesized vibration equivalent to the vibration of the viscoelastic member, and the equivalent model is Equationematically analyzed, thereby estimating the abnormality and cause of breakdown of the moving apparatus 1 only by measuring vibration of the casing 8 or a monitored object.
    Type: Grant
    Filed: November 18, 2014
    Date of Patent: October 1, 2019
    Assignees: Tokuyama Corporation, Yamaguchi University
    Inventors: Yoshifumi Mori, Takashi Saito
  • Patent number: 10423157
    Abstract: A process for controlling a plurality of mobile-radio equipped robots in a talkgroup includes receiving, at a mobile-radio equipped robot via a wireless communications interface comprising one of an infrastructure wireless communication interface for communicating with an infrastructure radio access network (RAN) and an ad-hoc wireless communication interface for communicating with an ad-hoc network, a group voice call containing a voice-command. The mobile-radio equipped robot determines that it is a target of the group voice call, and responsively text-converts the voice-command into an actionable text-based command. The mobile-radio equipped robot subsequently operates a mechanical drive element in accordance with the actionable text-based command.
    Type: Grant
    Filed: January 8, 2019
    Date of Patent: September 24, 2019
    Inventor: Yury Kotlyarov
  • Patent number: 10403301
    Abstract: The invention relates to an audio signal processing apparatus for processing an input earpiece audio signal upon the basis of a microphone audio signal, the audio signal processing apparatus comprising a voice activity detector being configured to determine a voice activity indicator signal upon the basis of the input earpiece audio signal, a noise magnitude determiner being configured to determine a microphone noise magnitude indicator signal upon the basis of the microphone audio signal, a gain factor determiner being configured to determine a gain factor signal upon the basis of the voice activity indicator signal and the microphone noise magnitude indicator signal, and a weighter being configured to weight the input earpiece audio signal by the gain factor signal to obtain an output earpiece audio signal.
    Type: Grant
    Filed: October 20, 2017
    Date of Patent: September 3, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Christof Faller, Alexis Favrot, Peter Grosche, Yue Lang
  • Patent number: 10374563
    Abstract: A gain control system for controlling gain applied to an audio signal includes a power estimator configured to estimate the power of a digital signal derived from the audio signal, a digital gain estimator configured to determine, in dependence on the estimated power, a digital gain which would modify the power of the digital signal so as to reach a target power level, and a gain controller configured to adjust an analog gain applied to the audio signal in dependence on the determined digital gain.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: August 6, 2019
    Assignee: Imagination Technologies Limited
    Inventors: Senthil Kumar Mani, Bala Manikya Prasad Puram
  • Patent number: 10320408
    Abstract: An electronic circuit includes a peak detector, a gain controller, and a compressor. The peak detector detects a peak level from a digital input. The gain controller outputs a digital gain with regard to increasing the peak level to a target level, The compressor provides the gain controller with a compressed gain which is to be output as the digital gain, based on the detected peak level. In a compression interval where the peak level is greater than a threshold level, the output digital gain increases as the peak level decreases. The compressor generates the compressed gain such that a ratio of an increment of the output digital gain to a decrement of the peak level in the compression interval is less than a reference ratio.
    Type: Grant
    Filed: January 5, 2018
    Date of Patent: June 11, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young-Hun Kim, Yunseob Song, Jonghwa Won, Wangseup Yeum
  • Patent number: 10276168
    Abstract: Embodiments of the present invention provide a voiceprint verification method and device. The voiceprint verification method comprises receiving verification voice data relating to a verification phrase; generating a verification voiceprint on the basis of said verification voice data; determining whether a similarity value between the verification voiceprint and a reference voiceprint conforms to a preset similarity value; and, if the similarity value between the verification voiceprint and a reference voiceprint conforms to a preset similarity value, then determining there is a match between the verification voiceprint and the reference voiceprint.
    Type: Grant
    Filed: December 12, 2016
    Date of Patent: April 30, 2019
    Assignee: Tencent Technology (Shenzhen) Company Limited
    Inventors: Xiao Sun, Zongzhuo Wu, Qiang Long, Ling Li, Lifang Cen, Xiang Zhang, Runjia Huang, Hui Wang
  • Patent number: 10249316
    Abstract: Speech in a motor vehicle is improved by suppressing transient, “non-stationary” noise using pattern matching. Pre-stored sets of linear predictive coefficients are compared to LPC coefficients of a noise signal. The pre-stored LPC coefficient set that is “closest” to an LPC coefficient set representing a signal comprising speech and noise is considered to be noise.
    Type: Grant
    Filed: September 9, 2017
    Date of Patent: April 2, 2019
    Assignee: Continental Automotive Systems, Inc.
    Inventors: Jianming Song, Bijal Joshi
  • Patent number: 10224048
    Abstract: An audio coding device includes a filter configured to extract a low-band signal having a first frequency component from an input signal, a memory, and a processor coupled to the memory and configured to extract envelope information relating to an envelope of a high-band signal having a second frequency component which is higher than the first frequency component in the input signal, detect tone information that is information on a tone signal included in a high-band signal spectrum from the input signal, correct the envelope information based on a difference between frequency of the tone signal and frequency of a peak of the envelope, and code the low-band signal, the tone information, and the envelope information that is corrected.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: March 5, 2019
    Assignee: FUJITSU LIMITED
    Inventors: Akira Kamano, Yohei Kishi, Masanao Suzuki
  • Patent number: 10216185
    Abstract: A process for controlling a plurality of mobile-radio equipped robots in a talkgroup includes receiving, at a mobile-radio equipped robot via a wireless communications interface comprising one of an infrastructure wireless communication interface for communicating with an infrastructure radio access network (RAN) and an ad-hoc wireless communication interface for communicating with an ad-hoc network, a group voice call containing a voice-command. The mobile-radio equipped robot determines that it is a target of the group voice call, and responsively text-converts the voice-command into an actionable text-based command. The mobile-radio equipped robot subsequently operates a mechanical drive element in accordance with the actionable text-based command.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: February 26, 2019
    Assignee: MOTOROLA SOLUTIONS, INC.
    Inventor: Yury Vladimirovich Kotlyarov
  • Patent number: 10192558
    Abstract: An improved gain-shape vector quantization is achieved by determining a number of bits to be allocated to a gain adjustment- and shape-quantizer for a plurality of combinations of a current bit rate and a first signal property. The bit allocation is derived by using an average of optimal bit allocations for a training data set. A number of bits to the gain adjustment and the shape quantizers for a plurality of combinations of the bit rate and a first signal are pre-calculated, and a table indicating the number of bits to be allocated to the gain adjustment- and the shape-quantizers for a plurality of combinations of the bit rate and a first signal property is created. In this way, the table can be used for achieving an improved bit allocation.
    Type: Grant
    Filed: December 1, 2016
    Date of Patent: January 29, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventor: Erik Norvell
  • Patent number: 10127923
    Abstract: A method includes identifying, by a computing device including a processor, a plurality of words from data. The method includes determining a location of the computing device. The method includes determining, by the computing device, a sound output level based on the location. The method also includes generating, by the computing device, digital sound data based on the sound output level and the plurality of words identified from the data.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: November 13, 2018
    Assignee: AT&T MOBILITY II LLC
    Inventors: Mostafa Tofighbakhsh, Vinay Kundaje, Waliur Rahman
  • Patent number: 10062386
    Abstract: Techniques for indicating to a voice-controlled device that a user is going to provide a voice command to the device. In response to receiving such an indication, the device may prepare to process an audio signal based on sound captured by a microphone of the device for the purpose of identifying the voice command from the audio signal. For instance, a user may utilize a signaling device that includes a button that, when actuated, sends a signal that is received by the voice-controlled device. In response to receiving the signal, a microphone of the voice-controlled device may capture sound that is proximate to the voice-controlled device and may create an audio signal based on the sound. The voice-controlled device may then analyze the audio signal for a voice command of the user or may provide the audio signal to a remote service for identifying the command.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: August 28, 2018
    Assignee: Amazon Technologies, Inc.
    Inventor: Allan Timothy Lindsay
  • Patent number: 10045115
    Abstract: Personal audio systems and methods are disclosed. A personal audio system includes a voice activity detector to determine whether or not an ambient audio stream contains voice activity, a pitch estimator to determine a frequency of a fundamental component of an annoyance noise contained in the ambient audio stream, and a filter bank to attenuate the fundamental component and at least one harmonic component of the annoyance noise to generate a personal audio stream. The filter bank implements a first filter function when the ambient audio stream does not contain voice activity, or a second filter function when the ambient audio stream contains voice activity.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: August 7, 2018
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Gints Klimanis, Anthony Parks
  • Patent number: 10037712
    Abstract: Vision-assist devices and methods are disclosed. In one embodiment, a vision-assist device includes an image sensor for generating image data corresponding to a scene, a processor, and an auditory device. The processor is programmed to receive the image data from the image sensor, perform object recognition on the image data to determine a classification of a detected object that is present within the scene, and determine a confidence value with respect to the classification of the detected object. The confidence value is based on a confidence that the classification of the detected object matches an actual classification of the detected object. The processor further generates an auditory signal based on the confidence value. The audio device receives the auditory signal from the processor and produces an auditory message from the auditory signal. The auditory message is indicative of the classification of the detected object and the confidence value.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: July 31, 2018
    Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventor: Rajiv Dayal
  • Patent number: 10038769
    Abstract: A sound emission and collection device includes a speaker, a filter processing a sound emission signal, microphones, echo cancellers cancelling regression sound signals of the sound emitted by the speaker from the sound collection signals of the corresponding microphones, a first integration section integrating adaptive filter coefficients taken out from the plurality of echo cancellers, a reverberation time estimation section estimating the reverberation time for each frequency band in the space in which the speaker and the plurality of microphones are present on the basis of the integrated adaptive filter coefficient, and an arithmetic operation section specifying a frequency band having a long reverberation time from the sound emission signal based on the estimated reverberation time, calculating a filter coefficient for suppressing power of the specified frequency band, and setting the filter coefficient to the filter.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: July 31, 2018
    Assignee: YAMAHA CORPORATION
    Inventors: Satoshi Ukai, Takashi Yamakawa
  • Patent number: 9984680
    Abstract: Embodiments include methods and systems for improving an acoustic model. Aspects include acquiring a first standard deviation value by calculating standard deviation of a feature from first training data and acquiring a second standard deviation value by calculating standard deviation of a feature from second training data acquired in a different environment from an environment of the first training data. Aspects also include creating a feature adapted to an environment where the first training data is recorded, by multiplying the feature acquired from the second training data by a ratio obtained by dividing the first standard deviation value by the second standard deviation value. Aspects further include reconstructing an acoustic model constructed using training data acquired in the same environment as the environment of the first training data using the feature adapted to the environment where the first training data is recorded.
    Type: Grant
    Filed: August 16, 2017
    Date of Patent: May 29, 2018
    Assignee: International Business Machines Corporation
    Inventors: Gakuto Kurata, Toru Nagano, Masayuki Suzuki
  • Patent number: 9984681
    Abstract: Embodiments include methods and systems for improving an acoustic model. Aspects include acquiring a first standard deviation value by calculating standard deviation of a feature from first training data and acquiring a second standard deviation value by calculating standard deviation of a feature from second training data acquired in a different environment from an environment of the first training data. Aspects also include creating a feature adapted to an environment where the first training data is recorded, by multiplying the feature acquired from the second training data by a ratio obtained by dividing the first standard deviation value by the second standard deviation value. Aspects further include reconstructing an acoustic model constructed using training data acquired in the same environment as the environment of the first training data using the feature adapted to the environment where the first training data is recorded.
    Type: Grant
    Filed: August 16, 2017
    Date of Patent: May 29, 2018
    Assignee: International Business Machines Corporation
    Inventors: Gakuto Kurata, Toru Nagano, Masayuki Suzuki
  • Patent number: 9979369
    Abstract: An audio peak limiter apparatus which calculates a smoothed sequence of gains for application to a sequence of blocks of samples of an audio signal. The apparatus sometimes calculates a candidate gain, to replace a too-large smoothed gain, such that applying the candidate gain would produce no scaled sample whose magnitude exceeds a predetermined limit. The apparatus sometimes calculates and stores a final gain to replace the too-large smoothed gain (where the final gain can be obtained e.g. by dividing the to-be-replaced smoothed gain by a prior smoothed gain and multiplying the result by the corresponding prior final gain), if it is determined that the candidate gain is not less than the immediately previous final gain.
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: May 22, 2018
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Nicholas Luke Appleton, Christopher Mark Tubb, William Thomas Rowley, Imankalyan Mukherjee
  • Patent number: 9899032
    Abstract: A method of performing gain adjustment in an electronic device includes determining a first set of spectral frequency values and determining a second set of spectral frequency values. The first set of spectral frequency values corresponds to a high-band portion of an audio signal received at the electronic device. The second set of spectral frequency values approximates the first set of spectral frequency values in the high band portion of the audio signal. The method includes estimating a spectral distortion corresponding to a difference between the first set of spectral frequency values and the second set of spectral frequency values and adjusting, based on the spectral distortion, a gain value corresponding to at least a portion of the audio signal. The method also includes transmitting an encoded bitstream that includes information corresponding to the adjusted gain value and the second set of spectral frequency values.
    Type: Grant
    Filed: February 2, 2017
    Date of Patent: February 20, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Venkatraman Atti, Venkatesh Krishnan
  • Patent number: 9870766
    Abstract: Embodiments include methods and systems for improving an acoustic model. Aspects include acquiring a first standard deviation value by calculating standard deviation of a feature from first training data and acquiring a second standard deviation value by calculating standard deviation of a feature from second training data acquired in a different environment from an environment of the first training data. Aspects also include creating a feature adapted to an environment where the first training data is recorded, by multiplying the feature acquired from the second training data by a ratio obtained by dividing the first standard deviation value by the second standard deviation value. Aspects further include reconstructing an acoustic model constructed using training data acquired in the same environment as the environment of the first training data using the feature adapted to the environment where the first training data is recorded.
    Type: Grant
    Filed: October 28, 2015
    Date of Patent: January 16, 2018
    Assignee: International Business Machines Incorporated
    Inventors: Gakuto Kurata, Toru Nagano, Masayuki Suzuki
  • Patent number: 9870767
    Abstract: Embodiments include methods and systems for improving an acoustic model. Aspects include acquiring a first standard deviation value by calculating standard deviation of a feature from first training data and acquiring a second standard deviation value by calculating standard deviation of a feature from second training data acquired in a different environment from an environment of the first training data. Aspects also include creating a feature adapted to an environment where the first training data is recorded, by multiplying the feature acquired from the second training data by a ratio obtained by dividing the first standard deviation value by the second standard deviation value. Aspects further include reconstructing an acoustic model constructed using training data acquired in the same environment as the environment of the first training data using the feature adapted to the environment where the first training data is recorded.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: January 16, 2018
    Assignee: International Business Machines Corporation
    Inventors: Gakuto Kurata, Toru Nagano, Masayuki Suzuki
  • Patent number: 9842605
    Abstract: Apparatus and methods for audio classifying and processing are disclosed. In one embodiment, an audio processing apparatus includes an audio classifier for classifying an audio signal into at least one audio type in real time; an audio improving device for improving experience of audience; and an adjusting unit for adjusting at least one parameter of the audio improving device in a continuous manner based on the confidence value of the at least one audio type.
    Type: Grant
    Filed: March 25, 2014
    Date of Patent: December 12, 2017
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Lie Lu, Alan J. Seefeldt, Jun Wang
  • Patent number: 9831884
    Abstract: Noise and distortion reduction in a signal processed through analog circuitry includes providing noise reduction circuitry to reduce signal noise generated by at least one analog circuit element. The noise reduction circuitry is adaptively configured to adjust a rate to apply noise reduction to the signal without introducing unwanted distortion. Distortion reduction circuitry is adaptively configured to adjust a rate to apply distortion reduction to the signal without introducing unwanted noise. The signal is processed through the analog circuitry using the adaptively configured noise reduction circuitry and adaptively configured distortion reduction circuitry to reduce both noise and distortion in the signal.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: November 28, 2017
    Assignee: Synaptics Incorporated
    Inventors: Dan Shen, Lorenzo Crespi
  • Patent number: 9830923
    Abstract: In some embodiments, a pitch filter for filtering a preliminary audio signal generated from an audio bitstream is disclosed. The pitch filter has an operating mode selected from one of either: (i) an active mode where the preliminary audio signal is filtered using filtering information to obtain a filtered audio signal, and (ii) an inactive mode where the pitch filter is disabled. The preliminary audio signal is generated in an audio encoder or audio decoder having a coding mode selected from at least two distinct coding modes, and the pitch filter is capable of being selectively operated in either the active mode or the inactive mode while operating in the coding mode based on control information.
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: November 28, 2017
    Assignee: Dolby International AB
    Inventors: Barbara Resch, Kristofer Kjörling, Lars Villemoes
  • Patent number: 9805721
    Abstract: Techniques for indicating to a voice-controlled device that a user is going to provide a voice command to the device. In response to receiving such an indication, the device may prepare to process an audio signal based on sound captured by a microphone of the device for the purpose of identifying the voice command from the audio signal. For instance, a user may utilize a signaling device that includes a button that, when actuated, sends a signal that is received by the voice-controlled device. In response to receiving the signal, a microphone of the voice-controlled device may capture sound that is proximate to the voice-controlled device and may create an audio signal based on the sound. The voice-controlled device may then analyze the audio signal for a voice command of the user or may provide the audio signal to a remote service for identifying the command.
    Type: Grant
    Filed: September 21, 2012
    Date of Patent: October 31, 2017
    Assignee: Amazon Technologies, Inc.
    Inventor: Allan Timothy Lindsay
  • Patent number: 9711162
    Abstract: A method of environmental noise compensation a speech audio signal is provided that includes estimating a fast audio energy level and a slow audio energy level in an audio environment, wherein the speech audio signal is not part of the audio environment, and applying a gain to the speech audio signal to generate an environment compensated speech audio signal, wherein the gain is updated based on the estimated slow audio energy level when the estimated fast audio energy level is not indicative of an audio event in the audio environment and the estimated gain is not updated when the estimated fast audio energy level is indicative an audio event in the audio environment.
    Type: Grant
    Filed: June 30, 2012
    Date of Patent: July 18, 2017
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Nitish Krishna Murthy, Takahiro Unno, Edwin R. Cole
  • Patent number: 9666205
    Abstract: A voice enhancement method is disclosed. The method of the present invention is adapted for a distributed system. In the present invention, a plurality of picking devices are disposed in a space for picking voice signal. After determining the positions of the picking devices, an enhancement operation is performed on the waveform signals from the picking devices to generate an enhanced voice signal.
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: May 30, 2017
    Assignee: Airoha Technology Corp.
    Inventors: Heng-Chih Lin, Wen-Sheng Hou, Chien-Chen Lin
  • Patent number: 9609547
    Abstract: Embodiments of the invention concern a method for mitigating interference between near field communication and an audio stream in a mobile user equipment, wherein the method includes a step of replacing at least part of the interfered audio stream by a sound representative of an interfering near field communication transaction.
    Type: Grant
    Filed: January 19, 2016
    Date of Patent: March 28, 2017
    Assignee: Optis Circuit Technology, LLC
    Inventors: Pablo Ignacio Gimeno Monge, Javier Del Prado Pavon, Nikhil Taluja
  • Patent number: 9576589
    Abstract: Devices, systems and methods are disclosed for reducing noise in input data by performing a hysteresis operation followed by a lateral excitation smoothing operation. For example, an audio signal may be represented as a sequence of feature vectors. A row of the sequence of feature vectors may, for example, be associated with the same harmonic of the audio signal at different points in time. To determine portions of the row that correspond to the harmonic being present, the system may compare an amplitude to a low threshold and a high threshold and select a series of data points that are above the low threshold and include at least one data point above the high threshold. The system may iteratively perform a spreading technique, spreading a center value of a center data point in a kernel to neighboring data points in the kernel, to further reduce noise.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: February 21, 2017
    Assignee: KNUEDGE, INC.
    Inventors: David C Bradley, Yao Huang Morin
  • Patent number: 9564130
    Abstract: Embodiments disclosed herein provide a wireless controller which shows a voice, motion, or an image complying with or not complying with a user's command and controls an external device in accordance with the user's command. According to an embodiment, a wireless controller includes a main body provided in a shape of a flowerpot, and includes a voice recognition unit, a control unit generating a signal for controlling an object to be controlled, which is designated by a voice recognized in the voice recognition unit, in accordance with the voice, and a communication unit outputting the control signal generated in the control unit to the object to be controlled; and an indicator provided at the main body in a shape of at least one of a stem, a leaf, a flower, and a tree, and showing a motion corresponding to the voice recognized in the voice recognition unit.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: February 7, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sang Hwa Choi, Bo Kyung Kim, Ji Ho Seo, Chang Wook Lee
  • Patent number: 9520851
    Abstract: A method and a media processing system (MPS) for automatic gain control are provided. The MPS detects a portion of an input signal corresponding to a measurement window associated with a predetermined time interval and determines a peak value of the input signal during a first predetermined time segment within the measurement window. The MPS determines a number of occurrences of the peak value during a second predetermined time segment within the measurement window and compares the determined number of occurrences of the peak value with a predefined range of occurrences for identifying a speech portion or a non-speech portion of the input signal corresponding to the measurement window. The MPS adjusts a gain corresponding to the first predetermined time segment based on the peak value, upon identifying the speech portion. The MPS iteratively performs the method by shifting the measurement window in steps of the first predetermined time segment.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: December 13, 2016
    Assignee: KIRUSA, INC.
    Inventor: Yuchen Wang
  • Patent number: 9495970
    Abstract: The invention provides a layered audio coding format with a monophonic layer and at least one sound field layer. A plurality of audio signals is decomposed, in accordance with decomposition parameters controlling the quantitative properties of an orthogonal energy-compacting transform, into rotated audio signals. Further, a time-variable gain profile specifying constructively how the rotated audio signals may be processed to attenuate undesired audio content is derived. The monophonic layer may comprise one of the rotated signals and the gain profile. The sound field layer may comprise the rotated signals and the decomposition parameters. In one embodiment, the gain profile comprises a cleaning gain profile with the main purpose of eliminating non-speech components and/or noise. The gain profile may also comprise mutually independent broadband gains.
    Type: Grant
    Filed: September 11, 2013
    Date of Patent: November 15, 2016
    Assignees: Dolby Laboratories Licensing Corporation, Dolby International AB
    Inventors: Glenn Dickins, Heiko Purnhagen, Leif Jonas Samuelsson
  • Patent number: 9485601
    Abstract: A method for performing a surround audio compatibility assessment on a plurality of original surround channels is described herein. A surround audio compatibility assessment system accepting original surround signals is also described herein.
    Type: Grant
    Filed: April 14, 2014
    Date of Patent: November 1, 2016
    Assignee: XFRM Incorporated
    Inventors: Richard C. Cabot, Matthew Sammis Ashman