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公开(公告)号：US20230421955A1
公开(公告)日：2023-12-28
申请号：US18360402
申请日：2023-07-27
Applicant: Amazon Technologies, Inc.
Inventor： Fred Torok , Michael Alan Pogue , Vikram Kumar Gundeti , Dharini Sundaram
CPC classification number: H04R3/12 , G06F3/165 , H04R27/00 , G06F3/167 , H04R2420/07 , H04R2420/03 , H04R2227/005
Abstract: Synchronized output of audio on a group of devices can comprise sending audio data from an audio distribution master device to one or more slave devices in the group. Scores can be assigned to respective audio playback devices, the scores being indicative of a performance level of the respective audio playback devices acting as a master device. The device with the highest score is designated as a candidate master device and one or more remaining devices are designated as a candidate slave(s). A throughput test is conducted with the highest scoring device acting as the candidate master device. The results of the throughput test are used to determine a master device for a group of devices. Latency of the throughput test can be reduced by using a prescribed time period for completion of the throughput test, and/or by selecting a first group configuration to passes the throughput test.
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公开(公告)号：US11758328B2
公开(公告)日：2023-09-12
申请号：US17751061
申请日：2022-05-23
Applicant: Amazon Technologies, Inc.
Inventor： Fred Torok , Michael Alan Pogue , Vikram Kumar Gundeti , Dharini Sundaram
CPC classification number: H04R3/12 , G06F3/165 , G06F3/167 , H04R27/00 , H04R2227/005 , H04R2420/03 , H04R2420/07
Abstract: Synchronized output of audio on a group of devices can comprise sending audio data from an audio distribution master device to one or more slave devices in the group. Scores can be assigned to respective audio playback devices, the scores being indicative of a performance level of the respective audio playback devices acting as a master device. The device with the highest score is designated as a candidate master device and one or more remaining devices are designated as a candidate slave(s). A throughput test is conducted with the highest scoring device acting as the candidate master device. The results of the throughput test are used to determine a master device for a group of devices. Latency of the throughput test can be reduced by using a prescribed time period for completion of the throughput test, and/or by selecting a first group configuration to passes the throughput test.
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公开(公告)号：US11600271B2
公开(公告)日：2023-03-07
申请号：US16933931
申请日：2020-07-20
Applicant: Amazon Technologies, Inc.
Inventor： Michael Alan Pogue , Philip Ryan Hilmes
IPC: G10L15/22 , G10L21/0208 , G10L15/08 , G10L21/0216
Abstract: A speech-based audio device may be configured to detect a user-uttered wake expression. For example, the audio device may generate a parameter indicating whether output audio is currently being produced by an audio speaker, whether the output audio contains speech, whether the output audio contains a predefined expression, loudness of the output audio, loudness of input audio, and/or an echo characteristic. Based on the parameter, the audio device may determine whether an occurrence of the predefined expression in the input audio is a result of an utterance of the predefined expression by a user.
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公开(公告)号：US10477333B1
公开(公告)日：2019-11-12
申请号：US15363812
申请日：2016-11-29
Applicant: Amazon Technologies, Inc.
Inventor： Michael Alan Pogue , Hanoch Freund
Abstract: A system capable of synchronizing audio by determining a playback delay between when an audio sample is sent to and then output from a speaker. The system may generate a test signal configured to reach a saturation threshold and may send the test signal at a first time, followed by blank audio samples, from a first processor to a second processor to be output by the speaker. The second processor may detect that an audio sample exceeds a saturation threshold at a second time, generate a timestamp and send the timestamp to the first processor. The first processor may determine a playback delay between the first time and the second time and may also determine a number of blank audio samples sent between the first time and the second time. Using the playback delay and the number of blank audio samples, the system may generate audio using precise timing.
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公开(公告)号：US10264358B2
公开(公告)日：2019-04-16
申请号：US15433874
申请日：2017-02-15
Applicant: Amazon Technologies, Inc.
Inventor： Fred Torok , Michael Alan Pogue , Vikram Kumar Gundeti , Dharini Sundaram
Abstract: Synchronized output of audio on a group of devices can comprise sending audio data from an audio distribution master device to one or more slave devices in the group. Scores can be assigned to respective audio playback devices, the scores being indicative of a performance level of the respective audio playback devices acting as a master device. The device with the highest score is designated as a candidate master device and one or more remaining devices are designated as a candidate slave(s). A throughput test is conducted with the highest scoring device acting as the candidate master device. The results of the throughput test are used to determine a master device for a group of devices. Latency of the throughput test can be reduced by using a prescribed time period for completion of the throughput test, and/or by selecting a first group configuration to passes the throughput test.
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Patent Agency Ranking
公开(公告)号：US20180234765A1
公开(公告)日：2018-08-16
申请号：US15433874
申请日：2017-02-15
Applicant: Amazon Technologies, Inc.
Inventor： Fred Torok , Michael Alan Pogue , Vikram Kumar Gundeti , Dharini Sundaram
CPC classification number: H04R3/12 , G06F3/165 , G06F3/167 , H04R27/00 , H04R2227/005 , H04R2420/03 , H04R2420/07
Abstract: Synchronized output of audio on a group of devices can comprise sending audio data from an audio distribution master device to one or more slave devices in the group. Scores can be assigned to respective audio playback devices, the scores being indicative of a performance level of the respective audio playback devices acting as a master device. The device with the highest score is designated as a candidate master device and one or more remaining devices are designated as a candidate slave(s). A throughput test is conducted with the highest scoring device acting as the candidate master device. The results of the throughput test are used to determine a master device for a group of devices. Latency of the throughput test can be reduced by using a prescribed time period for completion of the throughput test, and/or by selecting a first group configuration to passes the throughput test.
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公开(公告)号：US09978387B1
公开(公告)日：2018-05-22
申请号：US13959377
申请日：2013-08-05
Applicant: Amazon Technologies, Inc.
Inventor： Michael Alan Pogue , Amit Singh Chhetri
IPC: G10L21/02
CPC classification number: G10L21/02 , G10L15/00 , G10L21/0208 , G10L2021/02082 , G10L2021/02165
Abstract: An audio device may have an output speaker that produces audio within the environment of a user and one or more input microphones that capture speech and other sounds from the user environment. The audio device may use acoustic echo cancellation (AEC) to suppress echoed components of the speaker output that may be present in audio captured by the input microphones. The AEC may be implemented using an adaptive filter that estimates echoing based on an output reference signal. The output reference signal may be generated by a reference microphone placed near the speaker of the audio device.
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公开(公告)号：US20180130468A1
公开(公告)日：2018-05-10
申请号：US15652019
申请日：2017-07-17
Applicant: Amazon Technologies, Inc.
Inventor： Michael Alan Pogue , Philip Ryan Hilmes
IPC: G10L15/22
Abstract: A speech-based audio device may be configured to detect a user-uttered wake expression. For example, the audio device may generate a parameter indicating whether output audio is currently being produced by an audio speaker, whether the output audio contains speech, whether the output audio contains a predefined expression, loudness of the output audio, loudness of input audio, and/or an echo characteristic. Based on the parameter, the audio device may determine whether an occurrence of the predefined expression in the input audio is a result of an utterance of the predefined expression by a user.
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公开(公告)号：US11568867B2
公开(公告)日：2023-01-31
申请号：US16933904
申请日：2020-07-20
Applicant: Amazon Technologies, Inc.
Inventor： Michael Alan Pogue , Philip Ryan Hilmes
IPC: G10L25/51 , G10L15/22 , G10L21/0208 , G10L15/08 , G10L21/0216
Abstract: A speech-based audio device may be configured to detect a user-uttered wake expression. For example, the audio device may generate a parameter indicating whether output audio is currently being produced by an audio speaker, whether the output audio contains speech, whether the output audio contains a predefined expression, loudness of the output audio, loudness of input audio, and/or an echo characteristic. Based on the parameter, the audio device may determine whether an occurrence of the predefined expression in the input audio is a result of an utterance of the predefined expression by a user.
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公开(公告)号：US11501792B1
公开(公告)日：2022-11-15
申请号：US17135570
申请日：2020-12-28
Applicant: Amazon Technologies, Inc.
Inventor： Michael Alan Pogue , Kavitha Velusamy , Preethi Parasseri Narayanan , Tony David , Philip Ryan Hilmes
Abstract: A distributed voice controlled system has a primary assistant and at least one secondary assistant. The primary assistant has a housing to hold one or more microphones, one or more speakers, and various computing components. The secondary assistant is similar in structure, but is void of speakers. The voice controlled assistants perform transactions and other functions primarily based on verbal interactions with a user. The assistants within the system are coordinated and synchronized to perform acoustic echo cancellation, selection of a best audio input from among the assistants, and distributed processing.
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