公开(公告)号：US20200098380A1

公开(公告)日：2020-03-26

申请号：US16141578

申请日：2018-09-25

Applicant: Amazon Technologies, Inc.

Inventor： Yuan-Yen Tai ,  Mohamed Mansour ,  Parind Shah

IPC: G10L19/018 ,  G10L19/16 ,  G10L15/05 ,  G10L13/08 ,  G10L15/22

Abstract: A system may embed audio watermarks in audio data using a sign sequence. The system may detect audio watermarks in audio data despite the effects of reverberation. For example, the system may embed multiple repetitions of an audio watermark before generating output audio using loudspeaker(s). To detect the audio watermark in audio data generated by a microphone, the system may perform a self-correlation that indicates where the audio watermark is repeated. In some examples, the system may encode the audio watermark using multiple repetitions of a multi-segment Eigenvector. Additionally or alternatively, the system may encode the audio watermark using a binary sequence of positive and negative values, which may be used as a shared key for encoding/decoding the audio watermark. The audio watermark can be embedded in output audio data to enable wakeword suppression (e.g., avoid cross-talk between devices) and/or local signal transmission between devices in proximity to each other.

公开(公告)号：US10978081B2

公开(公告)日：2021-04-13

申请号：US16141578

申请日：2018-09-25

Applicant: Amazon Technologies, Inc.

Inventor： Yuan-Yen Tai ,  Mohamed Mansour ,  Parind Shah

IPC: G10L19/018 ,  G10L19/16 ,  G10L13/08 ,  G10L15/22 ,  G10L15/05

Abstract: A system may embed audio watermarks in audio data using a sign sequence. The system may detect audio watermarks in audio data despite the effects of reverberation. For example, the system may embed multiple repetitions of an audio watermark before generating output audio using loudspeaker(s). To detect the audio watermark in audio data generated by a microphone, the system may perform a self-correlation that indicates where the audio watermark is repeated. In some examples, the system may encode the audio watermark using multiple repetitions of a multi-segment Eigenvector. Additionally or alternatively, the system may encode the audio watermark using a binary sequence of positive and negative values, which may be used as a shared key for encoding/decoding the audio watermark. The audio watermark can be embedded in output audio data to enable wakeword suppression (e.g., avoid cross-talk between devices) and/or local signal transmission between devices in proximity to each other.

公开(公告)号：US20210327442A1

公开(公告)日：2021-10-21

申请号：US17201843

申请日：2021-03-15

Applicant: Amazon Technologies, Inc.

Inventor： Yuan-Yen Tai ,  Mohamed Mansour ,  Parind Shah

IPC: G10L19/018 ,  G10L19/16 ,  G10L13/08 ,  G10L15/22 ,  G10L15/05

Abstract: A system may embed audio watermarks in audio data using an Eigenvector matrix. The system may detect audio watermarks in audio data despite the effects of reverberation. For example, the system may embed multiple repetitions of an audio watermark before generating output audio using loudspeaker(s). To detect the audio watermark in audio data generated by a microphone, the system may perform a self-correlation that indicates where the audio watermark is repeated. In some examples, the system may encode the audio watermark using multiple repetitions of a multi-segment Eigenvector. Additionally or alternatively, the system may encode the audio watermark using a binary sequence of positive and negative values, which may be used as a shared key for encoding/decoding the audio watermark. The audio watermark can be embedded in output audio data to enable wakeword suppression (e.g., avoid cross-talk between devices) and/or local signal transmission between devices in proximity to each other.

公开(公告)号：US10950249B2

公开(公告)日：2021-03-16

申请号：US16141489

申请日：2018-09-25

Applicant: Amazon Technologies, Inc.

Inventor： Yuan-Yen Tai ,  Mohamed Mansour ,  Parind Shah

IPC: G10L19/018 ,  G10L19/16 ,  G10L13/08 ,  G10L15/22 ,  G10L15/05

Abstract: A system may embed audio watermarks in audio data using an Eigenvector matrix. The system may detect audio watermarks in audio data despite the effects of reverberation. For example, the system may embed multiple repetitions of an audio watermark before generating output audio using loudspeaker(s). To detect the audio watermark in audio data generated by a microphone, the system may perform a self-correlation that indicates where the audio watermark is repeated. In some examples, the system may encode the audio watermark using multiple repetitions of a multi-segment Eigenvector. Additionally or alternatively, the system may encode the audio watermark using a binary sequence of positive and negative values, which may be used as a shared key for encoding/decoding the audio watermark. The audio watermark can be embedded in output audio data to enable wakeword suppression (e.g., avoid cross-talk between devices) and/or local signal transmission between devices in proximity to each other.

公开(公告)号：US20200098379A1

公开(公告)日：2020-03-26

申请号：US16141489

申请日：2018-09-25

Applicant: Amazon Technologies, Inc.

Inventor： Yuan-Yen Tai ,  Mohamed Mansour ,  Parind Shah

IPC: G10L19/018 ,  G10L19/16 ,  G10L15/05 ,  G10L13/08 ,  G10L15/22

Abstract: A system may embed audio watermarks in audio data using an Eigenvector matrix. The system may detect audio watermarks in audio data despite the effects of reverberation. For example, the system may embed multiple repetitions of an audio watermark before generating output audio using loudspeaker(s). To detect the audio watermark in audio data generated by a microphone, the system may perform a self-correlation that indicates where the audio watermark is repeated. In some examples, the system may encode the audio watermark using multiple repetitions of a multi-segment Eigenvector. Additionally or alternatively, the system may encode the audio watermark using a binary sequence of positive and negative values, which may be used as a shared key for encoding/decoding the audio watermark. The audio watermark can be embedded in output audio data to enable wakeword suppression (e.g., avoid cross-talk between devices) and/or local signal transmission between devices in proximity to each other.