公开(公告)号：US20210120332A1

公开(公告)日：2021-04-22

申请号：US17001854

申请日：2020-08-25

Applicant: Amazon Technologies, Inc.

Inventor： Yuancheng Luo ,  Wontak Kim ,  Mihir Dhananjay Shetye

IPC: H04R1/40 ,  H04R25/00 ,  H04S3/00 ,  G10L19/008 ,  H04R5/02

Abstract: A system configured to improve spatial coverage of output audio and a corresponding user experience by performing upmixing and loudspeaker beamforming to stereo input signals. The system can perform upmixing to the stereo (e.g., two channel) input signal to extract a center channel and generate three-channel audio data. The system may then perform loudspeaker beamforming to the three-channel audio data to enable two loudspeakers to generate output audio having three distinct beams. The user may interpret the three distinct beams as originating from three separate locations, resulting in the user perceiving a wide virtual sound stage despite the loudspeakers being spaced close together on the device.

公开(公告)号：US12192695B1

公开(公告)日：2025-01-07

申请号：US17708607

申请日：2022-03-30

Applicant: Amazon Technologies, Inc.

Inventor： Andrew Jackson Stockton X ,  Mihir Dhananjay Shetye ,  Wontak Kim ,  Zhen Sun

IPC: H04R1/10 ,  G10K11/178

Abstract: A wearable audio output device (e.g., headphones) having an open design that allows ambient noise to pass to a listener without physically isolating the listener from a surrounding environment. The device may include an open earcup design that may partially or completely surround the listener's ear, and in some examples a portion of the listener's head may be uncovered by the open earcup. To improve comfort, the device includes a floating audio component configured to generate output audio in a direction of the listener's ear without contacting the listener's ear. To reduce an amount of ambient noise, the device may be configured to perform active noise cancellation (ANC) processing using feedforward and/or feedback microphones. The device may include an acoustic structure configured to direct the output audio in the direction of the listener's ear and/or position the feedback microphone(s) closer to the listener's ear.

公开(公告)号：US11128953B2

公开(公告)日：2021-09-21

申请号：US17001854

申请日：2020-08-25

Applicant: Amazon Technologies, Inc.

Inventor： Yuancheng Luo ,  Wontak Kim ,  Mihir Dhananjay Shetye

IPC: H04R1/40 ,  H04R25/00 ,  H04S3/00 ,  G10L19/008 ,  H04R5/02

Abstract: A system configured to improve spatial coverage of output audio and a corresponding user experience by performing upmixing and loudspeaker beamforming to stereo input signals. The system can perform upmixing to the stereo (e.g., two channel) input signal to extract a center channel and generate three-channel audio data. The system may then perform loudspeaker beamforming to the three-channel audio data to enable two loudspeakers to generate output audio having three distinct beams. The user may interpret the three distinct beams as originating from three separate locations, resulting in the user perceiving a wide virtual sound stage despite the loudspeakers being spaced close together on the device.

公开(公告)号：US10764676B1

公开(公告)日：2020-09-01

申请号：US16573472

申请日：2019-09-17

Applicant: Amazon Technologies, Inc.

Inventor： Yuancheng Luo ,  Wontak Kim ,  Mihir Dhananjay Shetye

IPC: H04R1/40 ,  H04R25/00 ,  H04S3/00 ,  G10L19/008 ,  H04R5/02

Abstract: A system configured to improve spatial coverage of output audio and a corresponding user experience by performing upmixing and loudspeaker beamforming to stereo input signals. The system can perform upmixing to the stereo (e.g., two channel) input signal to extract a center channel and generate three-channel audio data. The system may then perform loudspeaker beamforming to the three-channel audio data to enable two loudspeakers to generate output audio having three distinct beams. The user may interpret the three distinct beams as originating from three separate locations, resulting in the user perceiving a wide virtual sound stage despite the loudspeakers being spaced close together on the device.