公开(公告)号：US11544032B2

公开(公告)日：2023-01-03

申请号：US16751165

申请日：2020-01-23

Applicant: Dolby Laboratories Licensing Corporation

Inventor： David Matthew Fischer ,  Benjamin George Webster ,  Adam Scott Koniak ,  Kevin Cheng Lai

IPC: G06F3/16 ,  H04B10/114 ,  G10L19/008

Abstract: An apparatus and method of interfacing between a source media device and a destination media device. A wireless module passes through an audio signal from the source device to an output device, and transmits a wireless signal to a wireless device that outputs the audio signal. In this manner, the number of devices used for the connections may be reduced.

公开(公告)号：US20200351465A1

公开(公告)日：2020-11-05

申请号：US16770089

申请日：2018-12-13

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Christian Wolff ,  David Matthew Fischer

IPC: H04N5/60 ,  G06F3/16 ,  H04R3/00

Abstract: An apparatus, method and system for connecting High-Definition Multimedia Interface (HDMI) devices. A loopback device connects between a first source device and a sink device on a first connection; a second source device connects to the sink device on a second connection. The loopback device manages the first connection, passes transition-minimized differential signaling (TMDS) or fixed-rate link (FRL) signals through to the sink device, and outputs audio received from the sink device on the audio return channel (ARC) or enhanced audio return channel (eARC). In this manner, audio that originates from any source device may be output without requiring a direct connection to the loopback device.

公开(公告)号：US10779084B2

公开(公告)日：2020-09-15

申请号：US16336861

申请日：2017-09-28

Applicant: Dolby Laboratories Licensing Corporation ,  DOLBY INTERNATIONAL AB

Inventor： Daniel Arteaga ,  Giulio Cengarle ,  David Matthew Fischer ,  Antonio Mateos Sole ,  Davide Scaini ,  Alan J. Seefeldt

IPC: H04R5/02 ,  H04R5/04 ,  H04R5/027 ,  H04R3/12 ,  H04S7/00 ,  H04R3/00 ,  G01S5/18

Abstract: Embodiments are described for a method for localizing a set of speakers (106) and microphones (108), having only the times of arrival between each of the speakers and microphones. An autodiscovery process (107) uses an external input to set: a global translation (3 continuous parameters), a global rotation (3 continuous parameters), and discrete symmetries, i.e., an exchange of any axis pairs and/or reversal of any axis. Different time of arrival acquisition techniques may be used, such as ultrasonic sweeps or generic multitrack audio content. The autodiscovery algorithm is based in minimizing a certain cost function, and the process allows for latencies in the recordings, possibly linked to the latencies in the emission.

公开(公告)号：US09875751B2

公开(公告)日：2018-01-23

申请号：US15329909

申请日：2015-07-27

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Timothy James Eggerding ,  Christian Wolff ,  Adam Christopher Noel ,  David Matthew Fischer ,  Sergio Martinez

IPC: G10L19/20 ,  G10L19/008 ,  G10L19/16 ,  H04S3/00 ,  H04S5/00 ,  G10L19/018

CPC classification number: G10L19/20 ,  G10L19/008 ,  G10L19/018 ,  G10L19/167 ,  H04S3/008 ,  H04S5/00 ,  H04S2400/11

Abstract: Embodiments are directed processing adaptive audio content by determining an audio type as one of channel-based audio and object-based audio for each audio segment of an adaptive audio bitstream, tagging the each audio segment with a metadata definition indicating the audio type of the corresponding audio segment, processing audio segments tagged as channel-based audio in a channel audio renderer component, and processing audio segments tagged as object-based audio in an object audio renderer component that is distinct from the channel audio renderer component. Object-based audio is rendered through an object audio renderer interface that dynamically adjusts processing block sizes of the object audio segments based on timing and alignment of metadata updates and maximum/minimum block size parameters.

公开(公告)号：US10587982B2

公开(公告)日：2020-03-10

申请号：US16060372

申请日：2016-12-14

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： David Matthew Fischer ,  Warren Mansfield ,  Adam Christopher Noel ,  Timothy James Eggerding ,  Philip Nicol

IPC: H04R5/02 ,  H04S7/00 ,  H04R1/26 ,  H04R1/32 ,  H04R3/12 ,  H04S3/00

Abstract: Systems and methods are described for an adaptive audio system that renders reflected sound for adaptive audio systems in different ways depending on the orientation of at least one speaker in a set of speakers. A speaker of the system may comprise an integrated speaker having front-firing and upward-firing drivers, a sensor to determine the orientation of the speaker (e.g., horizontal or vertical) and a transceiver and control unit that transmits the orientation to a decoder and receives updated speaker feeds from the renderer based on the orientation.

公开(公告)号：US09723425B2

公开(公告)日：2017-08-01

申请号：US14899481

申请日：2014-06-17

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： David Matthew Fischer ,  Timothy James Eggerding ,  Eugene Edward Radzik ,  Adam Christopher Noel ,  David S. McGrath

IPC: H04R5/02 ,  H04S7/00 ,  H04R3/12 ,  H04S5/00 ,  H03G11/00 ,  H04R3/04 ,  H04R3/14 ,  H04S3/00

CPC classification number: H04S7/308 ,  H03G11/008 ,  H04R3/04 ,  H04R3/12 ,  H04R3/14 ,  H04S3/008 ,  H04S5/00 ,  H04S7/30 ,  H04S2400/03 ,  H04S2400/07 ,  H04S2400/11

Abstract: Improved methods and devices for processing low-frequency audio data are provided. A bass extraction process may involve applying low-pass filters to received audio object signals, to produce extracted low-frequency audio signals. The bass extraction process may be performed prior to a process of rendering audio objects into speaker feed signals. A bass management process may involve routing the extracted low-frequency audio signals to the one or more speakers capable of reproducing low-frequency audio signals.

公开(公告)号：US11115617B2

公开(公告)日：2021-09-07

申请号：US16770089

申请日：2018-12-13

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Christian Wolff ,  David Matthew Fischer

IPC: H04N5/60 ,  G06F3/16 ,  H04R3/00

Abstract: An apparatus, method and system for connecting High-Definition Multimedia Interface (HDMI) devices. A loopback device connects between a first source device and a sink device on a first connection; a second source device connects to the sink device on a second connection. The loopback device manages the first connection, passes transition-minimized differential signaling (TMDS) or fixed-rate link (FRL) signals through to the sink device, and outputs audio received from the sink device on the audio return channel (ARC) or enhanced audio return channel (eARC). In this manner, audio that originates from any source device may be output without requiring a direct connection to the loopback device.

公开(公告)号：US10341772B2

公开(公告)日：2019-07-02

申请号：US15756555

申请日：2016-09-01

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： David Matthew Fischer ,  Sripal S. Mehta ,  Timothy James Eggerding

IPC: H04R3/12 ,  H04S7/00 ,  G06F3/16

Abstract: A system and method of providing a signal to wireless speakers. An audio stick connects to a source device and provides the audio signal to the wireless speakers. The audio stick combines the functionality of two separate devices: an audio receiver device and a transmitter device for the wireless speakers.

公开(公告)号：US11929091B2

公开(公告)日：2024-03-12

申请号：US17683662

申请日：2022-03-01

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Chunmao Zhang ,  Lianwu Chen ,  Ziyu Yang ,  Joshua Brandon Lando ,  David Matthew Fischer ,  Lie Lu

IPC: G10L25/78 ,  G06N3/08 ,  G10L25/30 ,  H04R5/033 ,  H04R5/04 ,  H04S1/00

CPC classification number: G10L25/78 ,  G06N3/08 ,  G10L25/30 ,  H04R5/033 ,  H04R5/04 ,  H04S1/002 ,  H04R2420/07

Abstract: An apparatus and method of blind detection of binauralized audio. If the input content is detected as binaural, a second binauralization may be avoided. In this manner, the user experience avoids audio artifacts introduced by multiple binauralizations.

公开(公告)号：US11425503B2

公开(公告)日：2022-08-23

申请号：US16987197

申请日：2020-08-06

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Daniel Arteaga ,  Giulio Cengarle ,  David Matthew Fischer ,  Antonio Mateos Sole ,  Davide Scaini ,  Alan Seefeldt

IPC: H04S7/00 ,  H04R5/04 ,  H04R5/02 ,  H04R5/027 ,  H04R3/12 ,  H04R3/00 ,  G01S5/18

Abstract: Embodiments are described for a method of simultaneously localizing a set of speakers and microphones, having only the times of arrival between each of the speakers and microphones. An autodiscovery process uses an external input to set: a global translation (3 continuous parameters), a global rotation (3 continuous parameters), and discrete symmetries, i.e., an exchange of any axis pairs and/or reversal of any axis. Different time of arrival acquisition techniques may be used, such as ultrasonic sweeps or generic multitrack audio content. The autodiscovery algorithm is based in minimizing a certain cost function, and the process allows for latencies in the recordings, possibly linked to the latencies in the emission.