Noise Patents (Class 704/226)
  • Patent number: 10979812
    Abstract: A headset adapted to transmitting an outgoing audio signal (Tx) and comprising a voice microphone and at least one ambient microphone. The headset comprises an ambient noise reduction block (ANR), which is adapted to reduce the level of ambient noise in the outgoing audio signal (Tx). The ambient noise reduction block (ANR) includes the measuring the levels of the voice microphone signal (X) and ambient microphone signal (Y) to estimate a characteristic constant level drop between the voice microphone signal (X) and the ambient microphone signal (Y), which is characteristic for the headset user talking. A time-varying filter passes the voice microphone signal (X), when the level difference is larger than characteristic constant level drop (CLD) and attenuates the voice microphone signal (X), if the level difference is below characteristic constant level drop.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: April 13, 2021
    Assignees: GN AUDIO A/S
    Inventors: Mads Dyrholm, Allan Mejlgren Von Bulow
  • Patent number: 10972844
    Abstract: The invention provides an earphone and a set of earphones. The earphone includes a processing circuit and a filtering module. The processing circuit acquires a first speech signal and performs a pre-processing operation on the first speech signal to generate a second speech signal. The filtering module includes high-pass, low-pass, and band-pass filters. The processing circuit is further configured to: receive first, second, and third signals respectively from the high-pass, low-pass, and band-pass filters; perform a noise reduction operation on the second and third signals to generate a fourth signal; and perform a signal synthesis operation on the first and fourth signals to synthesize the first and fourth signals to form an output speech signal.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: April 6, 2021
    Assignee: Merry Electronics(Shenzhen) Co., Ltd.
    Inventors: Yen Ta Chiang, Hung-Chi Lin, Chao-Sen Chang
  • Patent number: 10970171
    Abstract: A method begins by a processing module dispersed storage error encoding a data segment to produce a set of encoded data slices and dispersed storage error encoding metadata associated with the data segment to produce a set of encoded metadata slices. The method continues with the processing module creating a set of data slice names for the set of encoded data slices and creating a set of metadata slice names based on the set of data slice names. The method continues with the processing module sending the set of encoded data slices and the set of data slice names to a dispersed storage network (DSN) memory for storage therein. The method continues with the processing module sending the set of encoded metadata slices and the set of metadata slice names to the DSN memory for storage therein.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: April 6, 2021
    Assignee: PURE STORAGE, INC.
    Inventors: Jason K. Resch, Greg Dhuse, Andrew Baptist, Wesley Leggette
  • Patent number: 10964314
    Abstract: An adaptive beamformer includes at least first and second microphones that generate respective audio signals that include speech and noise, a controller that detects occurrences of speech and noise within the audio signals, an adaptive speech cancelling filter that cancels speech from the audio signal of the second microphone to provide a speech-cancelled signal, an adaptive mixing block that combines the speech-cancelled signal and the second microphone audio signal to provide a noise reference signal in a weighted manner such that a weight of the second microphone signal is increased proportionally with an amount of the detected noise and a weight of the speech-cancelled signal is increased proportionally with an amount of the detected speech, and an adaptive noise cancelling filter that uses the noise reference signal to remove the noise from the first microphone audio signal.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: March 30, 2021
    Assignee: Cirrus Logic, Inc.
    Inventors: Nima Yousefian Jazi, Justin L. Allen
  • Patent number: 10891945
    Abstract: The present disclosure discloses a method and an apparatus for judging termination of sound reception and a terminal device. The method including: performing a voice activity detection on a current sound clip to obtain a first value; performing a semantic relevance detection on the current sound clip and a next sound clip by deep learning to obtain a second value; performing a weighted calculation on the first value and the second value to obtain a third value; comparing the third value with a preset threshold; and determining whether sound reception of the current sound clip is terminated based on the comparison result.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: January 12, 2021
    Assignee: UBTECH ROBOTICS CORP.
    Inventors: Youjun Xiong, Haoming Li, Yanhui Xia, Liyang Li, Pinxiu Wen
  • Patent number: 10893362
    Abstract: Provided are, among other things, systems, methods and techniques for processing an audio signal to add virtual bass. In one representative embodiment, an apparatus includes: an input line that inputs an original audio signal; an estimator, coupled to the input line, that estimates a fundamental frequency of a bass sound within the original audio signal; a bass extraction filter, coupled to the input line, that extracts a bass portion of the original audio signal that is at least 1 octave wide and includes the fundamental frequency; a frequency translator, coupled to the bass extraction filter, that shifts the bass portion, in its entirety, by a positive frequency increment that is an integer multiple of the fundamental frequency estimated by the estimator, thereby providing a virtual bass signal; and an adder having 1) inputs coupled to the original audio signal and to the virtual bass signal and 2) an output.
    Type: Grant
    Filed: July 21, 2019
    Date of Patent: January 12, 2021
    Assignee: Guoguang Electric Company Limited
    Inventor: Yuli You
  • Patent number: 10872615
    Abstract: A process for compressing an audio speech signal utilizes ASR processing to generate a corresponding text representation and, depending on confidence in the corresponding text representation, selectively applies more, less, or no compression to the audio signal. The result is a compressed audio signal, with corresponding text, that is compact and well suited for searching, analytics, or additional ASR processing.
    Type: Grant
    Filed: March 31, 2019
    Date of Patent: December 22, 2020
    Assignee: Medallia, Inc.
    Inventor: David Garrod
  • Patent number: 10867615
    Abstract: Systems, devices, and methods are described for reducing degradation of a voice recognition input. An always listening device may always be listening for voice commands via a microphone and may experience interference from unwanted audio such as from the output audio of television speakers. The always listening device may receive data associated with the output audio over a first communications channel. The always listening device may also receive, on a second communications channel, timing information associated with data. The always listening device may adjust admission of the audio received by the microphone to enable it to arrive at approximately the same time as the data received via the first communications channel. The unwanted output audio included in the audio received via the microphone may then be determined and may be removed so that a voice command in the audio received by the microphone may be processed.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: December 15, 2020
    Assignee: Comcast Cable Communications, LLC
    Inventors: Ross Gilson, Michael Sallas, Scott David Kurtz, Gary Skrabutenas, Christopher Stone
  • Patent number: 10861448
    Abstract: An in-vehicle voice recognition apparatus capable of recognizing user voice more correctly by removing sound generated in a vehicle from sound input to a microphone, and a method of controlling the same are disclosed. The in-vehicle voice recognition apparatus according to an embodiment of the present disclosure includes a central processing unit configured to output a media signal, a digital signal processor configured to receive the media signal from the central processing unit and to convert the media signal into an analog signal, and an eco cancellation hardware connected to the digital signal processor and configured to receive the analog signal, to acquire a first final media output on the basis of the analog signal and to acquire a voice command from a sound input through a microphone on the basis of the first final media output.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: December 8, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Hye Joo Lee, Sung Chan Park, Myoung Kyoung Ji, Jeong Suck Park
  • Patent number: 10863269
    Abstract: Double-talk detection systems and methods are provided that include a plurality of microphones and array processing to detect when a vehicle occupant is speaking. One or more array processors combine the microphone signals to provide a primary signal and a reference signal. The responses of the primary signal and the reference signal are different in the direction of an occupant location. A comparison of energy content is made between the primary signal and reference signal to selectively indicate double-talk based on the comparison.
    Type: Grant
    Filed: October 2, 2018
    Date of Patent: December 8, 2020
    Assignee: BOSE CORPORATION
    Inventors: Elie Bou Daher, Cristian M. Hera, Vigneish Kathavarayan, Tobe Z. Barksdale
  • Patent number: 10839820
    Abstract: The present application provides a voice processing method, an apparatus, a device, and a storage medium, including: acquiring a first acoustic feature of each of N voice frames, where N is a positive integer greater than 1; applying a neural network algorithm to N first acoustic features to obtain a first mask; modifying the first mask according to VAD information of the N voice frames to obtain a second mask; and processing the N first acoustic features according to the second mask to obtain a second acoustic feature, resulting in more effective noise suppression and a lower damage to the voice.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: November 17, 2020
    Assignee: BAIDU ONLINE NETWORK TECHNOLOGY (BEIJING) CO., LTD.
    Inventors: Chao Li, Weixin Zhu
  • Patent number: 10832698
    Abstract: An abnormal sound detection device includes a first learning unit that inputs a normal operating sound of the machine equipment, and registers a normal sound base spectrum from an amplitude spectrogram, a new sound/new vibration extraction unit that executes supervised nonnegative matrix factorization (NMF) using the normal sound base spectrum as teacher data on an acoustic signal input during diagnosis, and outputs a nonnegative matrix not allowed to be approximated with a low rank in the normal sound base spectrum, a second learning unit that extracts a new sound/new vibration component from the normal operating sound of the machine equipment, learns a normal sound model from the new sound/new vibration component, and registers the normal sound model, and an abnormality detection unit that computes a probability that the new sound/new vibration component extracted from the acoustic signal of the machine equipment during diagnosis is generated from the normal sound model.
    Type: Grant
    Filed: September 10, 2019
    Date of Patent: November 10, 2020
    Assignee: HITACHI, LTD.
    Inventors: Yohei Kawaguchi, Takashi Endo
  • Patent number: 10825469
    Abstract: A system and method for analyzing sound signals within a predetermined space, including: analyzing a plurality of sound signals captured within a predetermined space via at least one sound sensor; generating a grid corresponding to the predetermined space based on the plurality of sound signals, wherein the grid is utilized to identify areas within the predetermined space as interest points; identifying, based on the interest point, at least one sound generating object within the grid based on the analysis of the plurality of sound signals; and identifying at least one characteristic of the plurality of sound signals.
    Type: Grant
    Filed: July 19, 2018
    Date of Patent: November 3, 2020
    Assignee: InSoundz Ltd.
    Inventors: Tomer Goshen, Emil Winebrand, Tzahi Zilbershtein, Matan Sagee, Guy Etgar
  • Patent number: 10805755
    Abstract: A speaker adjustment method applicable to an electronic device including two microphones and two speakers is provided. The speaker adjustment method includes the following steps: obtaining two first frequency responses corresponding the two speakers by using one microphone, and obtaining two second frequency responses corresponding the two speakers by using another microphone; calculating a sensitivity difference between the two microphones according to the two first frequency responses and the two second frequency responses, where a distance ratio of distances from the two microphones to one speaker equals to a distance ratio of distances from the two microphones to another speaker; and adjusting outputs of the two speakers according to the sensitivity difference, at least one of the first frequency responses and at least one of the second frequency responses. In addition, an electronic device using the speaker adjustment method is also provided.
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: October 13, 2020
    Assignee: Acer Incorporated
    Inventors: Po-Jen Tu, Jia-Ren Chang, Kai-Meng Tzeng
  • Patent number: 10789968
    Abstract: A sound playback device and a noise reducing method thereof are disclosed. The method comprises the steps of: receiving an input sound signal, wherein the input sound signal includes a noise; performing a first denoising processing procedure to the input sound signal to obtain a first processing sound signal; performing a noise analysis procedure to the input sound signal to generate an analysis result; performing a second denoising processing procedure to the first processing sound signal to obtain a second processing sound signal according to the analysis result so as to reduce the noise; and outputting the second processing sound signal.
    Type: Grant
    Filed: August 23, 2019
    Date of Patent: September 29, 2020
    Assignee: UNLIMITER MFA CO., LTD
    Inventors: Yu-Chieh Huang, Kuo-Ping Yang, Po-Jui Wu, Kuan-Li Chao
  • Patent number: 10777195
    Abstract: A computing device includes a communication interface configured to interface and communicate with a communication system, an audio interface configured to interface and communicate with a user, a memory that stores operational instructions, and processing circuitry operably coupled to the communication interface, the audio interface, and to the memory that is configured to execute the operational instructions to perform various operations. The computing device monitors audio content, maintains a running buffer of most recent audio content, and detects a wake word command of the user. When detected, the computing device processes the most recent audio content including the wake word command of the user to determine validity/invalidity whether the wake word command of the user is invalid based on the most recent audio content. When invalid, the computing device rejects the wake word command of the user and continues to monitor the audio content and maintain the running buffer.
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: September 15, 2020
    Assignee: International Business Machines Corporation
    Inventors: Jeremy R. Fox, Andrew R. Jones, Gregory J. Boss, John E. Moore, Jr.
  • Patent number: 10771894
    Abstract: An apparatus for capturing audio comprises a first beamformer (305) coupled to a microphone array (301) and arranged to generate a first beamformed audio output. A plurality of constrained beamformers (309, 311) each generates a constrained beamformed audio output. A first adapter (307) adapts beamform parameters of the first beamformer (305) and a second adapter (313) adapts constrained beamform parameters for the plurality of constrained beamformers (309, 311). A difference processor (317) determines a difference measure for the constrained beamformers (309, 311) where the difference measure is indicative of the difference between beams formed by the first beamformer (305) and the constrained beamformers (309, 311).
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: September 8, 2020
    Assignee: Koninklijke Philips N.V.
    Inventors: Cornelis Pieter Janse, Brian Brand Antonius Johannes Bloemendal, Patrick Kechichian, Rik Jozef Martinus Janssen
  • Patent number: 10755726
    Abstract: Provided are methods and systems for enhancing speech when corrupted by transient noise (e.g., keyboard typing noise). The methods and systems utilize a reference microphone input signal for the transient noise in a signal restoration process used for the voice part of the signal. A robust Bayesian statistical model is used to regress the voice microphone on the reference microphone, which allows for direct inference about the desired voice signal while marginalizing the unwanted power spectral values of the voice and transient noise. Also provided is a straightforward and efficient Expectation-maximization (EM) procedure for fast enhancement of the corrupted signal. The methods and systems are designed to operate easily in real-time on standard hardware, and have very low latency so that there is no irritating delay in speaker response.
    Type: Grant
    Filed: January 7, 2015
    Date of Patent: August 25, 2020
    Assignee: Google LLC
    Inventors: Simon J. Godsill, Herbert Buchner, Jan Skoglund
  • Patent number: 10757512
    Abstract: Apparatus and methods for multi-source audio amplification and ear protection devices are provided herein. In certain configurations, an audio amplification and ear protection device includes at least one microphone that generates an ambient sound signal based on detecting ambient sound, at least one speaker, and an electrical system that controls sound outputted by the at least one speaker based on amplifying the ambient sound signal and a secondary sound source signal. The electrical system receives a first user-controlled volume signal that is operable to control an amount of amplification provided to the ambient sound signal, and a second user-controlled volume signal that is operable to control an amount of amplification provided to the secondary sound source signal.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: August 25, 2020
    Assignee: Team IP Holdings, LLC
    Inventors: Timothy D. Schnell, Doug Mann
  • Patent number: 10741165
    Abstract: A noise-cancellation system, including: a noise-cancellation filter configured to generate a noise-cancellation signal; an actuator configured to receive the noise-cancellation signal and to transduce a noise-cancellation audio signal based on the noise-cancellation signal, the noise-cancellation audio signal destructively interfering with an undesired noise in a noise-cancellation zone in a predefined volume; an error sensor configured to output an error sensor signal, the error sensor signal being representative of residual undesired noise in the noise-cancellation zone; a performance cost filter configured to receive and filter the error sensor signal and to output a performance cost filter signal, the performance cost filter signal being representative of the error sensor signal as weighted by a performance cost function; and an adjustment module configured to receive the performance cost filter signal and to adjust the noise-cancellation filter such that the noise-cancellation audio signal minimizes the
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: August 11, 2020
    Assignee: Bose Corporation
    Inventor: Wade Torres
  • Patent number: 10674255
    Abstract: A sound processing device is provided with a correction unit that corrects a sound pickup signal. The sound pickup signal is obtained by picking up a sound with a microphone array. The correction unit corrects the sound pickup signal based on directional information that indicates a direction of the microphone array in spherical coordinates, during the picking up of the sound.
    Type: Grant
    Filed: August 23, 2016
    Date of Patent: June 2, 2020
    Assignee: Sony Corporation
    Inventors: Yu Maeno, Yuhki Mitsufuji
  • Patent number: 10672415
    Abstract: Disclosed herein are systems, methods, and computer-readable storage devices for processing audio signals. An example system configured to practice the method receives audio at a device to be transmitted to a remote speech processing system. The system analyzes one of noise conditions, need for an enhanced speech quality, and network load to yield an analysis. Based on the analysis, the system determines to bypass user-defined options for enhancing audio for speech processing. Then, based on the analysis, the system can modify an audio transmission parameter used to transmit the audio from the device to the remote speech processing system. The audio transmission parameter can be one of an amount of coding, a chosen codec, or a number of audio channels, for example.
    Type: Grant
    Filed: May 4, 2017
    Date of Patent: June 2, 2020
    Assignees: AT&T INTELLECTUAL PROPERTY I, L.P., AT&T MOBILITY II LLC
    Inventors: Dimitrios Dimitriadis, John Crockett, Horst Juergen Schroeter
  • Patent number: 10636423
    Abstract: A communication system (100) formed of a radio management system (104) interoperates with a radio management codeplug database (106) and a confusability analyzer (108) for the creation and storage of voice recognition target strings for uploading to one or more land mobile portable radios (110) prior to field-deployment. Once the radios are deployed to the field, unrecognized voice command entries are determined, stored locally at the portable radio, and uploaded to cloud based storage (122). Analysis of the cloud based data is performed through a voice control analytics engine (124) to detect patterns associated with the unrecognized voice commands. The unrecognized voice command pattern is processed though a resolution action engine (126) to generate one or more resolution actions for the pattern.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: April 28, 2020
    Assignee: MOTOROLA SOLUTIONS, INC.
    Inventors: Darrell J. Stogner, Ellis A. Pinder, Matthew E. Simms, Melanie King
  • Patent number: 10629221
    Abstract: A computer-implemented method according to one embodiment includes creating a clean dictionary, utilizing a clean signal, creating a noisy dictionary, utilizing a first noisy signal, determining a time varying projection, utilizing the clean dictionary and the noisy dictionary, denoising a second noisy signal, utilizing the time varying projection, and expanding the clean dictionary and the noisy dictionary by updating the clean dictionary and the noisy dictionary to include new clean spectro-temporal building blocks and new noisy spectro-temporal building blocks created utilizing additional clean and noisy signals.
    Type: Grant
    Filed: April 9, 2019
    Date of Patent: April 21, 2020
    Assignee: International Business Machines Corporation
    Inventors: Dimitrios B. Dimitriadis, Samuel Thomas, Colin C. Vaz
  • Patent number: 10623839
    Abstract: An apparatus comprising a flexible substrate material configured to operating at least two shapes and at least one transducer located within the flexible substrate material configured to produce a transducer output, wherein the flexible substrate is configured to affect the transducer output.
    Type: Grant
    Filed: July 8, 2019
    Date of Patent: April 14, 2020
    Assignee: Nokia Technologies Oy
    Inventors: Asta Karkkainen, Juha Backman, Petri Soronen, Leo Karkkainen
  • Patent number: 10623563
    Abstract: A system and methods is provided for providing SIP based voice transcription services. A computer implemented method includes: transcribing a Session Initiation Protocol (SIP) based conversation between one or more users from voice to text transcription; identifying each of the one or more users that are speaking using a device SIP_ID of the one or more users; marking the identity of the one or more users that are speaking in the text transcription; and providing the text transcription of the speaking user to non-speaking users.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: April 14, 2020
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: John R. Dingler, Sri Ramanathan, Matthew A. Terry, Matthew B. Trevathan
  • Patent number: 10607614
    Abstract: An apparatus for decoding an encoded audio signal to obtain a reconstructed audio signal includes a receiving interface for receiving one or more frames comprising information on a plurality of audio signal samples of an audio signal spectrum of the encoded audio signal, and a processor for generating the reconstructed audio signal. The processor is configured to generate the reconstructed audio signal by fading a modified spectrum to a target spectrum, if a current frame is not received by the receiving interface or if the current frame is received by the receiving interface but is corrupted, wherein the modified spectrum includes a plurality of modified signal samples, wherein, for each of the modified signal samples of the modified spectrum, an absolute value of the modified signal sample is equal to an absolute value of one of the audio signal samples of the audio signal spectrum.
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: March 31, 2020
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Michael Schnabel, Goran Markovic, Ralph Sperschneider, Jérémie Lecomte, Christian Helmrich
  • Patent number: 10600414
    Abstract: A system configured to enable remote control to allow a first user to provide assistance to a second user. The system may receive a command from the second user granting remote control to the first user, enabling the first user to initiate a voice command on behalf of the second user. In some examples, the system may enable the remote control by treating a voice command originating from the first user as though it originated from the second user instead. For example, the system may receive the voice command from a first device associated with the first user but may route the voice command as though it was received by a second device associated with the second user. To enable this functionality, during a remote control session the first device may disable wakeword detection so that the voice command is correctly routed to the second device.
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: March 24, 2020
    Assignee: Amazon Technologies, Inc.
    Inventors: Peng Wang, Pathivada Rajsekhar Naidu
  • Patent number: 10595083
    Abstract: Methods, apparatus, systems and articles of manufacture to determine audio source impact on an audience of media are disclosed. A disclosed example method includes dividing monitored audio into successive audio segments including a first audio segment and a second audio segment, the monitored audio associated with monitored media. The example method also includes generating a first confidence value for the first audio segment of the successive segments and a second confidence value for the second audio segment, the first confidence value associated with a presence of a first audio source in the first audio segment, the second confidence value associated with a presence of the first audio source in the second audio segment.
    Type: Grant
    Filed: September 24, 2018
    Date of Patent: March 17, 2020
    Assignee: The Nielsen Company (US), LLC
    Inventors: Joseph Gregory Milavsky, Hashem Alsaket, James Bartelme, Jan Besehanic, Edward Stembler
  • Patent number: 10580402
    Abstract: A system for enhanced processing of voice-based signals in a voice-controllable sound-generating system (SGS) is provided. An SGS audio source may communicate electronic SGS audio signals to both (a) one or more speakers, which output corresponding SGS sound waves and (b) an audio countering system. A microphone may detect sound waves and output corresponding audio signals including: (a) distorted SGS audio signals corresponding with SGS sound waves and (b) additional audio signals originated from other sources, e.g., including voice-based commands. The audio countering system may (a) receive the electronic SGS audio signals from the SGS audio source; receive signals from the microphone representing the microphone-detected sound waves, and (c) use the electronic SGS audio signals received to cancel or counter the distorted SGS audio signals included in the microphone-received audio signals, to thereby enhance any voice-based commands included in the received audio signals.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: March 3, 2020
    Assignee: MICROCHIP TECHNOLOGY INCORPORATED
    Inventors: Arthur Eck, Devon Stephens
  • Patent number: 10582293
    Abstract: Headphone systems and methods are provided to mitigate the impact of wind on active noise cancellation. At least one headphone system includes an earpiece with a speaker to convert a signal into acoustic energy in an acoustic volume. A microphone is acoustically coupled to an external environment and detects external noise. A control circuit is configured to detect wind and to adjust a feed-forward audio signal from the microphone based on the wind detection.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: March 3, 2020
    Assignee: Bose Corporation
    Inventor: Paul Yamkovoy
  • Patent number: 10568143
    Abstract: Methods, devices and systems for generating physical random access channel sequences that can be used to efficiently access a wireless network are disclosed. One exemplary method of accessing a wireless network includes generating a repeated orthogonal sequence by repeating a base orthogonal sequence, generating a random access sequence by applying a window function to the repeated orthogonal sequence, and accessing the wireless network using a random access procedure by selectively using the random access sequence. In an example, the base orthogonal sequence may be a Zadoff-Chu sequence. In another example, the window function may be a root-Hamming window.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: February 18, 2020
    Assignee: Cohere Technologies, Inc.
    Inventors: James Delfeld, Ronny Hadani, Konstantinos Dimou
  • Patent number: 10559225
    Abstract: Provide automatic assessment of oral recitations during computer based language assessments using a trained neural network to automate the scoring and feedback processes without human transcription and scoring input by automatically generating a score of a language assessment. Providing an automatic speech recognition (“ASR”) scoring system. Training multiple scoring reference vectors associated with multiple possible scores of an assessment, and receiving an acoustic language assessment response to an assessment item. Based on the acoustic language assessment automatically generating a transcription, and generating an individual word vector from the transcription. Generating an input vector by concatenating an individual word vector with a transcription feature vector, and supplying an input vector as input to a neural network. Generating an output vector based on weights of a neural network; and generating a score by comparing an output vector with scoring vectors.
    Type: Grant
    Filed: May 24, 2018
    Date of Patent: February 11, 2020
    Assignee: Educational Testing Service
    Inventors: Jidong Tao, Lei Chen, Chong Min Lee
  • Patent number: 10535362
    Abstract: Signals are received from audio pickup channels that contain signals from multiple sound sources. The audio pickup channels may include one or more microphones and one or more accelerometers. Signals representative of multiple sound sources are generated using a blind source separation algorithm. It is then determined which of those signals is deemed to be a voice signal and which is deemed to be a noise signal. The output noise signal may be scaled to match a level of the output voice signal, and a clean speech signal is generated based on the output voice signal and the scaled noise signal. Other aspects are described.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: January 14, 2020
    Assignee: APPLE INC.
    Inventors: Nicholas J. Bryan, Vasu Iyengar
  • Patent number: 10536773
    Abstract: Methods and apparatus for frequency selective signal mixing for speech enhancement. In one embodiment frequency-based channel selection is performed for signal magnitude, signal energy, and noise estimate using speaker activity detection information, signal-to-noise ratio, and/or signal level, Frequency-based channel selection is performed for a dynamic spectral floor to adjust the noise estimate using speaker dominance information. Noise reduction is performed on the signal for the selected channel.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: January 14, 2020
    Assignee: Cerence Operating Company
    Inventors: Timo Matheja, Markus Buck, Julien Premont
  • Patent number: 10482867
    Abstract: There are provided a control signal generation unit 120 that generates a control signal on the basis of a cosine wave signal and a sine wave signal whose frequencies are a control frequency identified according to a vibration noise source, and a correction value update unit that updates a correction value to a value for decreasing signal power of an error signal on the basis of a relationship between increase and decrease of the signal power of the error signal obtained from remaining vibration noise that remains after interference sound that is generated on the basis of the control signal and propagates through a secondary route interferes with vibration noise generated from the vibration noise source and increase and decrease of the correction value used for correction of the control frequency.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: November 19, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Atsuyoshi Yano
  • Patent number: 10475452
    Abstract: A voice data processing method and an electronic apparatus are provided. The method includes: pausing accepting voice data as recorded or pausing recording the voice data; detecting whether a current environment satisfies a condition for continuing recording the voice data, after pausing accepting the voice data as recorded or pausing recording the voice data; and initiating acceptance of the voice data in response to detecting the condition for continuing the recording is satisfied.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: November 12, 2019
    Assignee: LENOVO (BEIJING) CO., LTD.
    Inventor: Shu Gao
  • Patent number: 10448139
    Abstract: A method for selective sound field environment processing for one or more wireless earpieces, each of the one or more wireless earpieces including comprising a plurality of microphones is provided. The method includes receiving audio input of a sound field environment from the plurality of microphones of each of the one or more wireless earpieces, identifying background noise in the sound field environment, identifying audio from at least one sound source within the sound field environment, processing the audio input using one or more processors of at least one of the wireless earpieces to reduce the background noise and processing the audio input using one or more processors of the at least one of the wireless earpieces to enhance the audio from the at least one sound source within the sound field environment to provide processed audio, and transducing the processed audio at one or more speakers of the one or more wireless earpieces.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: October 15, 2019
    Assignee: BRAGI GmbH
    Inventors: Mohamed Ali Razouane, Peter Vincent Boesen, Gwenael Kosider, David K Dohmen
  • Patent number: 10431240
    Abstract: Provided is a speech enhancement method and a system therefor. The speech enhancement method includes receiving at least one speech signal; generating a first speech signal by performing a primary speech enhancement on the at least one speech signal; selecting a noise removing gain corresponding to the first speech signal from pre-learned noise removing gain information; and generating a second speech signal by performing a secondary speech enhancement on the first speech signal based on the selected noise removing gain.
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: October 1, 2019
    Assignees: Samsung Electronics Co., Ltd, Industry-University Cooperation Foundation Hanyang University
    Inventors: Seung-yeol Lee, Joon-hyuk Chang, Byeong-seob Ko, Song-kyu Park, Tae-jun Park
  • Patent number: 10425055
    Abstract: An electronic device includes one or more microphones, one or more sensors, and one or more processors operable with the one or more microphones and the one or more sensors. The one or more processors, upon the one or more sensors detecting the electronic device is disposed within a repository container, such as a pocket, apply an audio signal adjustment function to signals received from the one or more microphones, thereby mitigating noise in the signals caused by the repository container.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: September 24, 2019
    Assignee: Motorola Mobility LLC
    Inventors: Rachid Alameh, Robert Zurek, Jarrett Simerson
  • Patent number: 10410643
    Abstract: Methods, apparatus, systems and articles of manufacture (e.g., physical storage media) to utilize audio watermarking for people monitoring are disclosed. Example people monitoring methods disclosed herein include determining, at a user device, whether a first trigger condition for emitting an audio watermark identifying at least one of the user device or a user of the user device is satisfied. Such example methods also include, in response to determining that the first trigger condition is satisfied, providing a first audio signal including the audio watermark to an audio circuit that is to output an acoustic signal from the user device.
    Type: Grant
    Filed: July 15, 2014
    Date of Patent: September 10, 2019
    Assignee: The Nielson Company (US), LLC
    Inventors: Alexander Topchy, Padmanabhan Soundararajan, Venugopal Srinivasan
  • Patent number: 10390134
    Abstract: A positioning apparatus for locating devices within a vehicle is provided. The positioning apparatus comprises: at least two sets of MICs, including at least one set of MICs provided at a first position and at least another set of MICs provided at a second position which is different from the first position, the at least two sets of MICs are used for gathering mixed audio corresponding to an object to be positioned, and wherein the mixed audio contains at least a first audio and a second audio; and a control unit which is capable of determining position of the object within the vehicle in accordance with the first audio and identifying the object in accordance with the second audio.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: August 20, 2019
    Assignee: NIO CO., LTD
    Inventor: Rongkai Pan
  • Patent number: 10381025
    Abstract: An apparatus includes a function module, a strength module, and a filter module. The function module compares an input signal, which has a component, to a first delayed version of the input signal and a second delayed version of the input signal to produce a multi-dimensional model. The strength module calculates a strength of each extremum from a plurality of extrema of the multi-dimensional model based on a value of at least one opposite extremum of the multi-dimensional model. The strength module then identifies a first extremum from the plurality of extrema, which is associated with a pitch of the component of the input signal, that has the strength greater than the strength of the remaining extrema. The filter module extracts the pitch of the component from the input signal based on the strength of the first extremum.
    Type: Grant
    Filed: May 2, 2017
    Date of Patent: August 13, 2019
    Assignee: University of Maryland, College Park
    Inventors: Carol Espy-Wilson, Srikanth Vishnubhotla
  • Patent number: 10366703
    Abstract: A method of processing an audio signal is provided. The method includes: acquiring an audio signal of a frequency domain for a plurality of frames; dividing a frequency band into a plurality of sections; acquiring energies of the plurality of sections; detecting an audio signal including noise based on an energy difference between the plurality of sections; and applying a suppression gain to the detected audio signal.
    Type: Grant
    Filed: October 1, 2015
    Date of Patent: July 30, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Young-woo Lee, Haruyuki Mori
  • Patent number: 10347270
    Abstract: According to one embodiment, a computer program product for denoising a signal comprises a computer readable storage medium having program instructions embodied therewith, wherein the computer readable storage medium is not a transitory signal per se, and where the program instructions are executable by a processor to cause the processor to perform a method comprising creating, utilizing a processor, a clean dictionary, utilizing a clean signal, creating, utilizing the processor, a noisy dictionary, utilizing a first noisy signal, determining, utilizing the processor, a time varying projection, utilizing the clean dictionary and the noisy dictionary, and denoising, utilizing the processor, a second noisy signal, utilizing the time varying projection.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: July 9, 2019
    Assignee: International Business Machines Corporation
    Inventors: Dimitrios B. Dimitriadis, Samuel Thomas, Colin C. Vaz
  • Patent number: 10348264
    Abstract: The embodiments of the present disclosure provide a method for audio mixing. At least two audio input signals are obtained. Then the at least two audio input signals are linearly superimposed. A mixed signal obtained by linearly superimposing the at least two audio input signals is divided into at least two audio mixing signal-intensity zones according to an audio intensity of the mixed signal. Audio intensity scalability is performed for respective audio mixing signal-intensity zones using corresponding scalability ratios. The at least two audio mixing signal-intensity zones after performing the audio intensity scalability is superimposed and output. The embodiments of the present disclosure further provide an apparatus for audio mixing.
    Type: Grant
    Filed: July 5, 2018
    Date of Patent: July 9, 2019
    Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
    Inventors: Xinliang Wang, Bin Li
  • Patent number: 10339961
    Abstract: Provided are a Voice Activity Detection (VAD) method and apparatus. The method includes that: at least one first class feature in a first feature category, at least one second class feature in a second feature category and at least two existing VAD judgment results are acquired, the first class feature and the second class feature are features used for VAD detection (S102); and VAD is carried out according to the first class feature, the second class feature and the at least two existing VAD judgment results, to obtain a combined VAD judgment result (S104).
    Type: Grant
    Filed: October 24, 2014
    Date of Patent: July 2, 2019
    Assignee: ZTE CORPORATION
    Inventors: Changbao Zhu, Hao Yuan
  • Patent number: 10341759
    Abstract: Method of wind and noise reduction for headphones starts by receiving acoustic signals from first external microphone included on the outside of earcup's housing. Acoustic signals are received from internal microphone included inside earcup's housing. ANC downlink corrector processes downlink signal to generate echo estimate of speaker signal. First summator removes echo estimate of speaker signal from acoustic signals from internal microphone to generate corrected internal microphone signal. Spectral combiner performs spectral mixing of corrected internal microphone signal with acoustic signals from first external microphone to generate mixed signal. Lower frequency portion of mixed signal includes corresponding lower frequency portion of corrected internal microphone signal, and higher frequency portion of mixed signal includes corresponding higher frequency portion of acoustic signals from first external microphone. Other embodiments are also described.
    Type: Grant
    Filed: May 26, 2017
    Date of Patent: July 2, 2019
    Assignee: Apple Inc.
    Inventors: Sorin V. Dusan, Tom-Davy W. Saux, Vladan Bajic
  • Patent number: 10319392
    Abstract: Noise cancelling headsets and a method of improving audio sensitivity for a headset are disclosed.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: June 11, 2019
    Assignee: GN Audio A/S
    Inventor: Erik Witthøfft Rasmussen
  • Patent number: RE48083
    Abstract: The invention produces a higher quality image from a rendering system based on a relationship between the output of a rendering system and the parameters used to compute them. Specifically, noise is removed in rendering by estimating the functional dependency between sample features and the random inputs to the system. Mutual information is applied to a local neighborhood of samples in each part of the image. This dependency is then used to reduce the importance of certain scene features in a cross-bilateral filter, which preserves scene detail. The results produced by the invention are computed in a few minutes thereby making it reasonably robust for use in production environments.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: July 7, 2020
    Assignee: STC.UNM
    Inventors: Pradeep Sen, Aliakbar Darabi