公开(公告)号：US20220406326A1

公开(公告)日：2022-12-22

申请号：US17779515

申请日：2019-12-09

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Timothy Alan PORT ,  Daniel Steven TEMPLETON ,  Jack Gregory HAYS

IPC: G10L21/0232 ,  G10L15/22 ,  G10L25/51 ,  H04R1/08 ,  G06F3/16

Abstract: Some implementations involve receiving a content stream that includes audio data, determining a content type corresponding to the content stream and determining, based at least in part on the Receiving, by a control system and via an interface system, a content stream that includes audio data content type, a noise compensation method. Some examples involve performing the noise compensation method on the audio data to produce noise-compensated audio data, rendering the noise-compensated audio data for reproduction via a set of audio reproduction transducers of the audio environment, to produce rendered audio signals, and providing the rendered audio signals to at least some audio reproduction transducers of the audio environment.

公开(公告)号：US20220124128A1

公开(公告)日：2022-04-21

申请号：US17423061

申请日：2020-01-14

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Timothy Alan PORT ,  Richard J. CARTWRIGHT

IPC: H04L65/403 ,  G06V20/40 ,  H04M3/42 ,  H04N7/01 ,  H04N19/593 ,  G10L15/26

Abstract: An apparatus and method relating to use of a physical writing surface (132) during a videoconference or presentation. Snapshots of a whiteboard (132) are identified by applying a difference measure to the video data (e.g., as a way of comparing frames at different times). Audio captured by a microphone may be processed to generate textual data, wherein a portion of the textual data is associated with each snapshot. The writing surface may be identified (enrolled) using gestures. Image processing techniques may be used to transform views of a writing surface.

公开(公告)号：US20200220906A1

公开(公告)日：2020-07-09

申请号：US16642744

申请日：2018-09-27

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Timothy Alan PORT

IPC: H04L29/06 ,  G06F3/042 ,  G06T3/00 ,  G06T5/50 ,  G06T5/00 ,  H04N7/15 ,  G06F3/0488 ,  H04M3/56

Abstract: A method of processing of a sequence of video frames from a camera capturing a writing surface for subsequent transmission to at least one of a remote videoconferencing client and a remote videoconferencing server. The method comprises receiving the sequence of video frames from the camera; and selecting an image area of interest in the video frames, comprising selecting one of a sub-area of the video frames and an entire area of the video frames. The method also comprises, for each current video frame of the sequence of video frames, generating a pen stroke mask by applying adaptive thresholding to the image area of interest. The method also comprises generating an output video frame using the pen stroke mask. Corresponding systems and computer readable media are disclosed.

公开(公告)号：US20190379974A1

公开(公告)日：2019-12-12

申请号：US16433933

申请日：2019-06-06

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Timothy Alan PORT ,  Sebastian P.B. HOLZAPFEL ,  Juan Felix TORRES

IPC: H04R3/04 ,  H04R29/00 ,  H04B17/12 ,  G10L21/0232

Abstract: Systems and methods for automatic characterization of perceived transducer distortion are described. The system includes a controller configured to receive a distortion level; a signal generator configured to generate a test signal for a frequency band in response to the distortion level, the test signal including at least two simultaneous tones, the at least two simultaneous tones having different frequencies within the frequency band; an audio transducer configured to generate an audio signal based on the test signal; and a distortion tuner configured to receive the audio signal and to determine the distortion level of the system based on a detected amount of distortion in the audio signal.