公开(公告)号：US10978079B2

公开(公告)日：2021-04-13

申请号：US15754654

申请日：2016-08-24

Applicant: Dolby Laboratories Licensing Corporation ,  Dolby International AB

Inventor： Dirk Jeroen Breebaart ,  David Matthew Cooper ,  Leif Jonas Samuelsson ,  Jeroen Koppens ,  Rhonda Joy Wilson ,  Heiko Purnhagen ,  Alexander Stahlmann

IPC: G10L19/008 ,  G06F3/16 ,  H04L29/06 ,  H04S1/00 ,  H04S7/00

Abstract: A method for encoding an input audio stream including the steps of obtaining a first playback stream presentation of the input audio stream intended for reproduction on a first audio reproduction system, obtaining a second playback stream presentation of the input audio stream intended for reproduction on a second audio reproduction system, determining a set of transform parameters suitable for transforming an intermediate playback stream presentation to an approximation of the second playback stream presentation, wherein the transform parameters are determined by minimization of a measure of a difference between the approximation of the second playback stream presentation and the second playback stream presentation, and encoding the first playback stream presentation and the set of transform parameters for transmission to a decoder.

公开(公告)号：US10932082B2

公开(公告)日：2021-02-23

申请号：US16309578

申请日：2017-06-20

Applicant: Dolby Laboratories Licensing Corporation

Inventor： C. Phillip Brown ,  Joshua Brandon Lando ,  Mark F. Davis ,  Alan J. Seefeldt ,  David Matthew Cooper ,  Dirk Jeroen Breebaart ,  Rhonda Wilson

IPC: H04S7/00

Abstract: A system and method of modifying a binaural signal using headtracking information. The system calculates a delay, a first filter response, and a second filter response, and applies these to the left and right components of the binaural signal according to the headtracking information. The system may also apply headtracking to parametric binaural signals. In this manner, headtracking may be applied to pre-rendered binaural audio.

公开(公告)号：US10701502B2

公开(公告)日：2020-06-30

申请号：US16532143

申请日：2019-08-05

Applicant: Dolby Laboratories Licensing Corporation ,  Dolby International AB

Inventor： Leif Jonas Samuelsson ,  Dirk Jeroen Breebaart ,  David Matthew Cooper ,  Jeroen Koppens

IPC: H04S1/00 ,  H04S3/00 ,  H04R5/04 ,  H04S7/00 ,  H04S3/02

Abstract: Methods for dialogue enhancing audio content, comprising providing a first audio signal presentation of the audio components, providing a second audio signal presentation, receiving a set of dialogue estimation parameters configured to enable estimation of dialogue components from the first audio signal presentation, applying said set of dialogue estimation parameters to said first audio signal presentation, to form a dialogue presentation of the dialogue components; and combining the dialogue presentation with said second audio signal presentation to form a dialogue enhanced audio signal presentation for reproduction on the second audio reproduction system, wherein at least one of said first and second audio signal presentation is a binaural audio signal presentation.

公开(公告)号：US20190158957A1

公开(公告)日：2019-05-23

申请号：US16191123

申请日：2018-11-14

Applicant: Dolby Laboratories Licensing Corporation ,  DOLBY INTERNATIONAL AB

Inventor： Dirk Jeroen Breebaart ,  Mark David de Burgh ,  Nicholas Luke Appleton ,  Heiko Purnhagen ,  Mark William Gerrard ,  David Matthew Cooper

IPC: H04R3/14 ,  H04M1/60 ,  H04M1/03 ,  H04S3/00 ,  H04S7/00 ,  H04R3/04 ,  H04R5/04 ,  H04R5/02

Abstract: A method of processing audio data for replay on a mobile device with a first speaker and a second speaker, wherein the audio data comprises a respective audio signal for each of the first and second speakers, includes: determining a device orientation of the mobile device; if the determined device orientation is vertical orientation, applying a first processing mode to the audio signals for the first and second speakers; and if the determined device orientation is horizontal orientation, applying a second processing mode to the audio signals for the first and second speakers. Applying the first processing mode involves: determining respective mono audio signals in at least two frequency bands based on the audio signals for the first and second speakers; in a first one of the at least two frequency bands, routing a larger portion of the respective mono audio signal to one of the first and second speakers; and in a second one of the at least two frequency bands, routing a larger portion of the respective mono audio signal to the other one of the first and second speakers. Applying the second processing mode involves applying cross-talk cancellation to the audio signals for the first and second speakers.