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公开(公告)号：US11096593B2
公开(公告)日：2021-08-24
申请号：US16783569
申请日：2020-02-06
Inventor： Mahesh Chowdhary , Arun Kumar , Ghanapriya Singh , Rajendar Bahl
IPC: A61B5/0205 , A63B69/00 , A61B5/00 , A61B5/024 , A61B5/11 , G16H40/63 , A61B5/0245 , A61B5/22 , G16H50/20
Abstract: Motion activity data is collected from at least one sensor. An initial motion activity classifier function is applied to the motion activity data to produce an initial motion activity posteriorgram. Pre-processing and segmenting the motion activity data into windows produces segmented motion activity data from which sensor specific features are extracted. An updated motion activity classifier function is generated from the extracted sensor specific features. Subsequent motion activity data is also collected from the at least one sensor, and the updated motion activity classifier function is applied to the subsequent motion activity data to produce an updated motion activity posteriorgram.
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Patent Agency Ranking
公开(公告)号：US20210151071A1
公开(公告)日：2021-05-20
申请号：US17158817
申请日：2021-01-26
Inventor： Mahesh Chowdhary , Arun Kumar , Ghanapriya Singh , Rajendar Bahl
Abstract: A method and apparatus for classifying a spatial environment as open or enclosed are provided. In the method and apparatus, one or more microphones detect ambient sound in a spatial environment and output an audio signal representative of the ambient sound. A processor determines a spatial environment impulse response (SEIR) for the audio signal and extracts one or more features of the SEIR. The processor classifies the spatial environment as open or enclosed based on the one or more features of the SEIR.
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公开(公告)号：US10979805B2
公开(公告)日：2021-04-13
申请号：US16235947
申请日：2018-12-28
Inventor： Mahesh Chowdhary , Prasanth Logaraman , Arun Kumar , Rajendar Bahl
IPC: G10L21/0208 , H04R3/00 , H04R1/40 , H04R3/04 , G10L25/78 , G10L21/0216 , B81B7/00 , G01S3/80
Abstract: A method and apparatus for auto-directive adaptive beamforming for a microphone array using microelectromechanical systems (MEMS) sensor orientation information are provided. The microphone array captures audio and the MEMS sensor detects an orientation of the microphone array. A direction of arrival of a source signal is estimated based on the data representative of the audio. A change in an orientation of the microphone array is detected based on the orientation and the direction of arrival is compensates based on the change in the orientation of the microphone array. The apparatus pre-steers a beam of a beam pattern of the microphone array based on the compensated direction of arrival to retain the source signal in a broadside of the microphone array and performs adaptive wideband beamforming to null one or more interfering sources in the beam pattern while retaining the source signal in the broadside of the microphone array.
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公开(公告)号：US10976337B2
公开(公告)日：2021-04-13
申请号：US16257694
申请日：2019-01-25
Inventor： Mahesh Chowdhary , Arun Kumar , Ghanapriya Singh , Rajendar Bahl
IPC: G01P15/00 , G06F1/16 , G01P15/18 , H04W4/029 , G06N20/10 , G10L21/10 , G06K9/62 , H04W4/50 , G06F3/0346 , G10L25/51 , G06F3/01 , H04M1/725 , G10L25/78 , H04W4/38 , H04L29/08
Abstract: A distributed computing system for artificial intelligence in autonomously appreciating a circumstance context of a smart device. Raw context data is detected by sensors associated with the smart device. The raw context data is pre-processed by the smart device and then provided to a cloud based server for further processing. At the cloud based server, various sets of feature data are obtained from the pre-processed context data. The various sets of feature data are compared with corresponding classification parameters to determine a classification of a continuous event and/or a classification of transient event, if any, which occur in the context. The determined classification of the continuous event and the transient event will be used to autonomously configure the smart device or another related smart device to fit the context.
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公开(公告)号：US10943602B2
公开(公告)日：2021-03-09
申请号：US16696948
申请日：2019-11-26
Inventor： Mahesh Chowdhary , Arun Kumar , Ghanapriya Singh , Rajendar Bahl
Abstract: A method and apparatus for classifying a spatial environment as open or enclosed are provided. In the method and apparatus, one or more microphones detect ambient sound in a spatial environment and output an audio signal representative of the ambient sound. A processor determines a spatial environment impulse response (SEIR) for the audio signal and extracts one or more features of the SEIR. The processor classifies the spatial environment as open or enclosed based on the one or more features of the SEIR.
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公开(公告)号：US09870535B2
公开(公告)日：2018-01-16
申请号：US15074188
申请日：2016-03-18
Inventor： Mahesh Chowdhary , Arun Kumar , Ghanapriya Singh , Kashif R. J. Meer , Indra Narayan Kar , Rajendar Bahl
CPC classification number: G06N7/005 , G06F17/30477
Abstract: An electronic device described herein includes a sensing unit having at least one sensor to acquire sensing data. An associated computing device extracts sensor specific features from the sensing data, and generates a motion activity vector, a voice activity vector, and a spatial environment vector as a function of the sensor specific features. The motion activity vector, voice activity vector, and spatial environment vector are processed to determine a base level context of the electronic device relative to its surroundings, with the base level context having aspects each based on the motion activity vector, voice activity vector, and spatial environment vector. Meta level context of the electronic device relative to its surroundings is determined as a function of the base level context, with the meta level context being at least one inference made from at least two aspects of the plurality of aspects of the base level context.
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