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公开(公告)号：US20210304774A1
公开(公告)日：2021-09-30
申请号：US17228950
申请日：2021-04-13
Applicant: Amazon Technologies, Inc.
Inventor： Sundararajan Srinivasan , Arindam Mandal , Krishna Subramanian , Spyridon Matsoukas , Aparna Khare , Rohit Prasad
Abstract: Techniques for updating voice profiles used to perform user recognition are described. A system may use clustering techniques to update voice profiles. When the system receives audio data representing a spoken user input, the system may store the audio data. Periodically, the system may recall, from storage, audio data (representing previous user inputs). The system may identify clusters of the audio data, with each cluster including similar or identical speech characteristics. The system may determine a cluster is substantially similar to an existing voice profile. If this occurs, the system may create an updated voice profile using the original voice profile and the cluster of audio data.
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公开(公告)号：US10304440B1
公开(公告)日：2019-05-28
申请号：US15198578
申请日：2016-06-30
Applicant: Amazon Technologies, Inc.
Inventor： Sankaran Panchapagesan , Bjorn Hoffmeister , Arindam Mandal , Aparna Khare , Shiv Naga Prasad Vitaladevuni , Spyridon Matsoukas , Ming Sun
Abstract: An approach to keyword spotting makes use of acoustic parameters that are trained on a keyword spotting task as well as on a second speech recognition task, for example, a large vocabulary continuous speech recognition task. The parameters may be optimized according to a weighted measure that weighs the keyword spotting task more highly than the other task, and that weighs utterances of a keyword more highly than utterances of other speech. In some applications, a keyword spotter configured with the acoustic parameters is used for trigger or wake word detection.
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公开(公告)号：US11200884B1
公开(公告)日：2021-12-14
申请号：US16181925
申请日：2018-11-06
Applicant: Amazon Technologies, Inc.
Inventor： Sundararajan Srinivasan , Arindam Mandal , Krishna Subramanian , Spyridon Matsoukas , Aparna Khare , Rohit Prasad
Abstract: Techniques for labeling user inputs for updating user recognition voice profiles are described. A system may leverage various signals, generated during or after processing of a user input, to retroactively determine which user spoke the user input. For example, after the system receives the user input, the user may provide the system with non-spoken user verification information. Based on such user verification information, the system may label the previously spoken user input as originating from the particular user. The system may also or alternatively use system usage history to retroactively label user inputs.
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Patent Agency Ranking
公开(公告)号：US11893999B1
公开(公告)日：2024-02-06
申请号：US16055755
申请日：2018-08-06
Applicant: Amazon Technologies, Inc.
Inventor： Sai Sailesh Kopuri , John Moore , Sundararajan Srinivasan , Aparna Khare , Arindam Mandal , Spyridon Matsoukas , Rohit Prasad
Abstract: Techniques for enrolling a user in a system's user recognition functionality without requiring the user speak particular speech are described. The system may determine characteristics unique to a user input. The system may generate an implicit voice profile from user inputs having similar characteristics. After an implicit voice profile is generated, the system may receive a user input having speech characteristics similar to that of the implicit voice profile. The system may ask the user if the user wants the system to associate the implicit voice profile with a particular user identifier. If the user responds affirmatively, the system may request an identifier of a user profile (e.g., a user name). In response to receiving the user's name, the system may identify a user profile associated with the name and associate the implicit voice profile with the user profile, thereby converting the implicit voice profile into an explicit voice profile.
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公开(公告)号：US20220189458A1
公开(公告)日：2022-06-16
申请号：US17584489
申请日：2022-01-26
Applicant: Amazon Technologies, Inc.
Inventor： Spyridon Matsoukas , Aparna Khare , Vishwanathan Krishnamoorthy , Shamitha Somashekar , Arindam Mandal
Abstract: Systems, methods, and devices for verifying a user are disclosed. A speech-controlled device captures a spoken command, and sends audio data corresponding thereto to a server. The server performs ASR on the audio data to determine ASR confidence data. The server, in parallel, performs user verification on the audio data to determine user verification confidence data. The server may modify the user verification confidence data using the ASR confidence data. In addition or alternatively, the server may modify the user verification confidence data using at least one of a location of the speech-controlled device within a building, a type of the speech-controlled device, or a geographic location of the speech-controlled device.
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公开(公告)号：US11270685B2
公开(公告)日：2022-03-08
申请号：US16726051
申请日：2019-12-23
Applicant: Amazon Technologies, Inc.
Inventor： Spyridon Matsoukas , Aparna Khare , Vishwanathan Krishnamoorthy , Shamitha Somashekar , Arindam Mandal
Abstract: Systems, methods, and devices for verifying a user are disclosed. A speech-controlled device captures a spoken command, and sends audio data corresponding thereto to a server. The server performs ASR on the audio data to determine ASR confidence data. The server, in parallel, performs user verification on the audio data to determine user verification confidence data. The server may modify the user verification confidence data using the ASR confidence data. In addition or alternatively, the server may modify the user verification confidence data using at least one of a location of the speech-controlled device within a building, a type of the speech-controlled device, or a geographic location of the speech-controlled device.
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公开(公告)号：US11004454B1
公开(公告)日：2021-05-11
申请号：US16182021
申请日：2018-11-06
Applicant: Amazon Technologies, Inc.
Inventor： Sundararajan Srinivasan , Arindam Mandal , Krishna Subramanian , Spyridon Matsoukas , Aparna Khare , Rohit Prasad
Abstract: Techniques for updating voice profiles used to perform user recognition are described. A system may use clustering techniques to update voice profiles. When the system receives audio data representing a spoken user input, the system may store the audio data. Periodically, the system may recall, from storage, audio data (representing previous user inputs). The system may identify clusters of the audio data, with each cluster including similar or identical speech characteristics. The system may determine a cluster is substantially similar to an existing voice profile. If this occurs, the system may create an updated voice profile using the original voice profile and the cluster of audio data.
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公开(公告)号：US10522134B1
公开(公告)日：2019-12-31
申请号：US15388458
申请日：2016-12-22
Applicant: Amazon Technologies, Inc.
Inventor： Spyridon Matsoukas , Aparna Khare , Vishwanathan Krishnamoorthy , Shamitha Somashekar , Arindam Mandal
Abstract: Systems, methods, and devices for verifying a user are disclosed. A speech-controlled device captures a spoken command, and sends audio data corresponding thereto to a server. The server performs ASR on the audio data to determine ASR confidence data. The server, in parallel, performs user verification on the audio data to determine user verification confidence data. The server may modify the user verification confidence data using the ASR confidence data. In addition or alternatively, the server may modify the user verification confidence data using at least one of a location of the speech-controlled device within a building, a type of the speech-controlled device, or a geographic location of the speech-controlled device.
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