Patents by Inventor Shankar Thagadur Shivappa
Shankar Thagadur Shivappa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11889128Abstract: A device includes one or more processors configured to, during a call, receive a sequence of audio frames from a first device. The one or more processors are configured to, in response to determining that no audio frame of the sequence has been received for a threshold duration since a last received audio frame of the sequence, initiate transmission of a frame loss indication to the first device. The one or more processors are also configured to, responsive to the frame loss indication, receive a set of audio frames of the sequence and an indication of a second playback speed from the first device. The one or more processors are configured to initiate playback, via a speaker, of the set of audio frames based on the second playback speed. The second playback speed is greater than a first playback speed of a first set of audio frames of the sequence.Type: GrantFiled: January 5, 2021Date of Patent: January 30, 2024Assignee: QUALCOMM IncorporatedInventors: Shankar Thagadur Shivappa, Reid Westburg, Ferdinando Olivieri
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Publication number: 20240031765Abstract: A device includes a processor configured to perform signal enhancement of an input audio signal to generate an enhanced mono audio signal. The processor is also configured to mix a first audio signal and a second audio signal to generate a stereo audio signal. The first audio signal is based on the enhanced mono audio signal.Type: ApplicationFiled: July 25, 2022Publication date: January 25, 2024Inventors: Isaac Garcia MUNOZ, Shankar THAGADUR SHIVAPPA, Mason DAVIS, Alex TUNG, Dinesh RAMAKRISHNAN, Andre SCHEVCIW
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Publication number: 20230260525Abstract: A device includes a memory configured to store untransformed ambisonic coefficients at different time segments. The device includes one or more processors configured to obtain the untransformed ambisonic coefficients at the different time segments, where the untransformed ambisonic coefficients at the different time segments represent a soundfield at the different time segments. The one or more processors are configured to apply one adaptive network, based on a constraint that includes preservation of a spatial direction of one or more audio sources in the soundfield at the different time segments, to the untransformed ambisonic coefficients at the different time segments to generate transformed ambisonic coefficients at the different time segments, wherein the transformed ambisonic coefficients at the different time segments represent a modified soundfield at the different time segments, that was modified based on the constraint.Type: ApplicationFiled: April 24, 2023Publication date: August 17, 2023Inventors: Lae-Hoon KIM, Shankar THAGADUR SHIVAPPA, S M Akramus SALEHIN, Shuhua ZHANG, Erik VISSER
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Patent number: 11721353Abstract: A device includes one or more processors configured to obtain audio signals representing sound captured by at least three microphones and determine spatial audio data based on the audio signals. The one or more processors are further configured to determine a metric indicative of wind noise in the audio signals. The metric is based on a comparison of a first value and a second value. The first value corresponds to an aggregate signal based on the spatial audio data, and the second value corresponds to a differential signal based on the spatial audio data.Type: GrantFiled: December 21, 2020Date of Patent: August 8, 2023Assignee: Qualcomm IncorporatedInventors: S M Akramus Salehin, Lae-Hoon Kim, Hannes Pessentheiner, Shuhua Zhang, Sanghyun Chi, Erik Visser, Shankar Thagadur Shivappa
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Patent number: 11653166Abstract: A device includes a memory configured to store instructions. The device also includes a processor configured to execute the instructions to obtain spatial audio data representing audio from one or more sound sources. The processor is also configured to execute the instructions to generate first directional audio data based on the spatial audio data. The first directional audio data corresponds to a first arrangement of the one or more sound sources relative to an audio output device. The processor is further configured to generate second directional audio data based on the spatial audio data. The second directional audio data corresponds to a second arrangement of the one or more sound sources relative to the audio output device. The second arrangement is distinct from the first arrangement. The processor is also configured to generate an output stream based on the first directional audio data and the second directional audio data.Type: GrantFiled: May 27, 2021Date of Patent: May 16, 2023Assignee: Qualcomm IncorporatedInventor: Shankar Thagadur Shivappa
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Patent number: 11636866Abstract: A device includes a memory configured to store untransformed ambisonic coefficients at different time segments. The device also includes one or more processors configured to obtain the untransformed ambisonic coefficients at the different time segments, where the untransformed ambisonic coefficients at the different time segments represent a soundfield at the different time segments. The one or more processors are also configured to apply one adaptive network, based on a constraint, to the untransformed ambisonic coefficients at the different time segments to generate transformed ambisonic coefficients at the different time segments, wherein the transformed ambisonic coefficients at the different time segments represent a modified soundfield at the different time segments, that was modified based on the constraint.Type: GrantFiled: March 23, 2021Date of Patent: April 25, 2023Assignee: Qualcomm IncorporatedInventors: Lae-Hoon Kim, Shankar Thagadur Shivappa, S M Akramus Salehin, Shuhua Zhang, Erik Visser
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Patent number: 11638130Abstract: The techniques disclosed herein include a first device including one or more processors configured to detect a selection of at least one target object external to the first device, and initiate a channel of communication between the first device and a second device associated with the at least one target object external to the first device. The one or more processors may be configured to receive audio packets, from the second device, in response to the selection of at least one target object external to the device, decode the audio packets, received from the second device, to generate an audio signal. The one or more processors may be configured to output the audio signal based on the selection of the at least one target object external to the first device. The first device includes a memory, coupled to the one or more processors, configured to store the audio packets.Type: GrantFiled: December 19, 2019Date of Patent: April 25, 2023Inventors: Shankar Thagadur Shivappa, Bijan Forutanpour, Phi Hung Nguyen
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Patent number: 11604247Abstract: Mobile device positioning employs various forms of audio signal structures and detection methodologies. In one method, detection of an audio signal from a first source enables construction of a signal to facilitate detection of an audio signal from another source. Signals detected from these sources enable positioning of the mobile device receiving those signals. Another method forms audio signals transmitted from audio sources so that they have parts that add constructively and parts that differentiate the sources to enable positioning. Another audio signal based positioning method adaptively switches among positioning methods so that positioning remains operative as a mobile device moves toward and away from the sources. Another method tracks positioning history, evaluates it for errors and performs error mitigation to improve accuracy. Various other positioning technologies are detailed as well.Type: GrantFiled: April 8, 2019Date of Patent: March 14, 2023Assignee: Digimarc CorporationInventors: Brett A. Bradley, Ravi K. Sharma, Shankar Thagadur Shivappa, John D. Lord
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Patent number: 11580954Abstract: A device for communication includes one or more processors configured to receive, during an online meeting, a speech audio stream representing speech of a first user. The one or more processors are also configured to receive a text stream representing the speech of the first user. The one or more processors are further configured to selectively generate an output based on the text stream in response to an interruption in the speech audio stream.Type: GrantFiled: February 3, 2021Date of Patent: February 14, 2023Assignee: QUALCOMM IncorporatedInventors: Ferdinando Olivieri, Reid Westburg, Shankar Thagadur Shivappa
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Publication number: 20220386060Abstract: Methods, systems, computer-readable media, and apparatuses for manipulating a soundfield are presented. Some configurations include receiving a bitstream that comprises metadata and a soundfield description; parsing the metadata to obtain an effect identifier and at least one effect parameter value; and applying, to the soundfield description, an effect identified by the effect identifier. The applying may include using the at least one effect parameter value to apply the identified effect to the soundfield description.Type: ApplicationFiled: October 29, 2020Publication date: December 1, 2022Inventors: Nils Gunther PETERS, Shankar THAGADUR SHIVAPPA, S M Akramus SALEHIN, Jason FILOS, Siddhartha Goutham SWAMINATHAN, Ferdinando OLIVIERI
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Publication number: 20220386059Abstract: A device includes a memory configured to store instructions. The device also includes a processor configured to execute the instructions to obtain spatial audio data representing audio from one or more sound sources. The processor is also configured to execute the instructions to generate first directional audio data based on the spatial audio data. The first directional audio data corresponds to a first arrangement of the one or more sound sources relative to an audio output device. The processor is further configured to generate second directional audio data based on the spatial audio data. The second directional audio data corresponds to a second arrangement of the one or more sound sources relative to the audio output device. The second arrangement is distinct from the first arrangement. The processor is also configured to generate an output stream based on the first directional audio data and the second directional audio data.Type: ApplicationFiled: May 27, 2021Publication date: December 1, 2022Inventor: Shankar THAGADUR SHIVAPPA
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Publication number: 20220335959Abstract: Audio signal processing enhances audio watermark embedding and detecting processes. Audio signal processes include audio classification and adapting watermark embedding and detecting based on classification. Advances in audio watermark design include adaptive watermark signal structure data protocols, perceptual models, and insertion methods. Perceptual and robustness evaluation is integrated into audio watermark embedding to optimize audio quality relative the original signal, and to optimize robustness or data capacity. These methods are applied to audio segments in audio embedder and detector configurations to support real time operation. Feature extraction and matching are also used to adapt audio watermark embedding and detecting.Type: ApplicationFiled: November 22, 2021Publication date: October 20, 2022Inventors: Ravi K. Sharma, Brett A. Bradley, Yang Bai, Shankar Thagadur Shivappa, Ajith Kamath, Aparna Gurijala, Tomas Filler, David A. Cushman
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Patent number: 11425497Abstract: In an aspect, a lens is zoomed in to create a zoomed lens. Lens data associated with the lens includes a direction of the lens relative to an object in a field-of-view of the zoomed lens and a magnification of the object resulting from the zoomed lens. An array of microphones capture audio signals including audio produced by the object and interference produced by other objects. The audio signals are processed to identify a directional component associated with the audio produced by the object and three orthogonal components associated with the interference produced by the other objects. Stereo beamforming is used to increase a magnitude of the directional component (relative to the interference) while retaining a binaural nature of the audio signals. The increase in magnitude of the directional component is based on an amount of the magnification provided by the zoomed lens to the object.Type: GrantFiled: December 18, 2020Date of Patent: August 23, 2022Assignee: QUALCOMM IncorporatedInventors: S M Akramus Salehin, Lae-Hoon Kim, Vasudev Nayak, Shankar Thagadur Shivappa, Isaac Garcia Munoz, Sanghyun Chi, Erik Visser
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Publication number: 20220246133Abstract: A device for communication includes one or more processors configured to receive, during an online meeting, a speech audio stream representing speech of a first user. The one or more processors are also configured to receive a text stream representing the speech of the first user. The one or more processors are further configured to selectively generate an output based on the text stream in response to an interruption in the speech audio stream.Type: ApplicationFiled: February 3, 2021Publication date: August 4, 2022Inventors: Ferdinando OLIVIERI, Reid WESTBURG, Shankar THAGADUR SHIVAPPA
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Publication number: 20220217425Abstract: A device includes one or more processors configured to, during a call, receive a sequence of audio frames from a first device. The one or more processors are configured to, in response to determining that no audio frame of the sequence has been received for a threshold duration since a last received audio frame of the sequence, initiate transmission of a frame loss indication to the first device. The one or more processors are also configured to, responsive to the frame loss indication, receive a set of audio frames of the sequence and an indication of a second playback speed from the first device. The one or more processors are configured to initiate playback, via a speaker, of the set of audio frames based on the second playback speed. The second playback speed is greater than a first playback speed of a first set of audio frames of the sequence.Type: ApplicationFiled: January 5, 2021Publication date: July 7, 2022Inventors: Shankar THAGADUR SHIVAPPA, Reid WESTBURG, Ferdinando OLIVIERI
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Publication number: 20220201395Abstract: In an aspect, a lens is zoomed in to create a zoomed lens. Lens data associated with the lens includes a direction of the lens relative to an object in a field-of-view of the zoomed lens and a magnification of the object resulting from the zoomed lens. An array of microphones capture audio signals including audio produced by the object and interference produced by other objects. The audio signals are processed to identify a directional component associated with the audio produced by the object and three orthogonal components associated with the interference produced by the other objects. Stereo beamforming is used to increase a magnitude of the directional component (relative to the interference) while retaining a binaural nature of the audio signals. The increase in magnitude of the directional component is based on an amount of the magnification provided by the zoomed lens to the object.Type: ApplicationFiled: December 18, 2020Publication date: June 23, 2022Inventors: S M Akramus SALEHIN, Lae-Hoon KIM, Vasudev NAYAK, Shankar THAGADUR SHIVAPPA, Isaac Garcia MUNOZ, Sanghyun CHI, Erik VISSER
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Publication number: 20220199100Abstract: A device includes one or more processors configured to obtain audio signals representing sound captured by at least three microphones and determine spatial audio data based on the audio signals. The one or more processors are further configured to determine a metric indicative of wind noise in the audio signals. The metric is based on a comparison of a first value and a second value. The first value corresponds to an aggregate signal based on the spatial audio data, and the second value corresponds to a differential signal based on the spatial audio data.Type: ApplicationFiled: December 21, 2020Publication date: June 23, 2022Inventors: S M Akramus SALEHIN, Lae-Hoon KIM, Hannes PESSENTHEINER, Shuhua ZHANG, Sanghyun CHI, Erik VISSER, Shankar THAGADUR SHIVAPPA
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Patent number: 11309983Abstract: The techniques disclosed herein include a first device for reading one or more tags in metadata, the first device including one or more processors configured to receive metadata, from a second device, wirelessly connected via a sidelink channel to the first device. The one or more processors may also be configured to read the metadata, received from the second device to extract one or more tags representative of audio content, and identify audio content based on the one or more tags, and output the audio content. The first device may also include a memory, coupled to the one or more processors, configured to store the metadata.Type: GrantFiled: December 19, 2019Date of Patent: April 19, 2022Assignee: Qualcomm IncorporatedInventors: Shankar Thagadur Shivappa, Bijan Forutanpour, Phi Hung Nguyen
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Patent number: 11270711Abstract: In general, techniques are described by which to provide priority information for higher order ambisonic (HOA) audio data. A device comprising a memory and a processor may perform the techniques. The memory stores HOA coefficients of the HOA audio data, the HOA coefficients representative of a soundfield. The processor may decompose the HOA coefficients into a sound component and a corresponding spatial component, the corresponding spatial component defining shape, width, and directions of the sound component, and the corresponding spatial component defined in a spherical harmonic domain. The processor may also determine, based on one or more of the sound component and the corresponding spatial component, priority information indicative of a priority of the sound component relative to other sound components of the soundfield, and specify, in a data object representative of a compressed version of the HOA audio data, the sound component and the priority information.Type: GrantFiled: May 6, 2020Date of Patent: March 8, 2022Assignee: Qualcomm IncorproatedInventors: Moo Young Kim, Nils Günther Peters, Shankar Thagadur Shivappa, Dipanjan Sen
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Patent number: 11240623Abstract: One or more processors may obtain a first distance between a first audio zone of the two or more audio zones associated with the one or more interest points within the first audio zone, and a first device position of a device, obtain a second distance between a second audio zone of the two or more audio zones associated with the one or more interest points within the second audio zone, and the first device position of the device, and obtain an updated first distance and updated second distance after movement of the device has changed from the first device position to a second device position. The one or more processor(s) may independently control the first audio zone and the second audio zone, such that the audio data within the first audio zone and the second audio zone are adjusted based on the updated first distance and updated second distance.Type: GrantFiled: August 8, 2018Date of Patent: February 1, 2022Assignee: Qualcomm IncorporatedInventors: Nils Gunther Peters, S M Akramus Salehin, Shankar Thagadur Shivappa, Moo Young Kim, Dipanjan Sen