公开(公告)号：US11653142B2

公开(公告)日：2023-05-16

申请号：US17465563

申请日：2021-09-02

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Warren Mansfield ,  Alan J. Seefeldt ,  Peter Michael Razukas ,  Arun Sambandam

IPC: H04R1/26 ,  H04R1/02 ,  H04R3/14 ,  H04R5/02 ,  H04R27/00 ,  H04S7/00

CPC classification number: H04R1/26 ,  H04R1/02 ,  H04R3/14 ,  H04R5/02 ,  H04R27/00 ,  H04S7/30 ,  H04R2227/003 ,  H04R2227/005 ,  H04R2420/07 ,  H04S2400/03

Abstract: Embodiments are directed to a speaker system that contains an array of multiple dispersion drivers that creates an expansive acoustic pattern to playback multi-channel audio content through a standalone speaker. The speaker system comprises an interface receiving stereo audio; an upmixer generating surround sound formatted audio from the stereo audio including one or more height channels; a virtualizer/downmixer component coupled to the upmixer and generating speaker feeds for two or more loudspeaker output sections, configured to play back the stereo audio, wherein each output section is further configured to play its own dedicated stereo audio signals; and a set of drivers each coupled to a respective output section and configured to project sound in at least two different dispersion patterns.

公开(公告)号：US11429341B2

公开(公告)日：2022-08-30

申请号：US17209046

申请日：2021-03-22

Applicant: DOLBY LABORATORIES LICENSING CORPORATION ,  DOLBY INTERNATIONAL AB

Inventor： Jeroen Koppens ,  Jeffrey Riedmiller ,  Kristofer Kjoerling ,  Alexander Stahlmann ,  Holger Hoerich ,  Alan J. Seefeldt

IPC: G06F3/16 ,  G10L19/16 ,  H03G7/00 ,  H03G9/00 ,  H03G9/02 ,  H03G9/18 ,  H03G3/30 ,  H03G9/12 ,  H04S1/00 ,  H04S7/00 ,  G10L21/0324

Abstract: In an audio encoder, for audio content received in a source audio format, default gains are generated based on a default dynamic range compression (DRC) curve, and non-default gains are generated for a non-default gain profile. Based on the default gains and non-default gains, differential gains are generated. An audio signal comprising the audio content, the default DRC curve, and differential gains is generated. In an audio decoder, the default DRC curve and the differential gains are identified from the audio signal. Default gains are re-generated based on the default DRC curve. Based on the combination of the re-generated default gains and the differential gains, operations are performed on the audio content extracted from the audio signal.

公开(公告)号：USD947814S1

公开(公告)日：2022-04-05

申请号：US29794819

申请日：2021-06-15

Applicant: Dolby Laboratories Licensing Corporation

Designer： Drew Alexander Walcott ,  Grayson H. Byrd ,  Peter Michaelian ,  Brian Edward Renz ,  John Carson Stewart ,  Cody Michael Proksa ,  Vincent Voron ,  Sripal S. Mehta ,  Alan J. Seefeldt

公开(公告)号：US11218126B2

公开(公告)日：2022-01-04

申请号：US16920254

申请日：2020-07-02

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Jun Wang ,  Lie Lu ,  Alan J. Seefeldt

IPC: H03G3/00 ,  H03G7/00 ,  H03G3/30 ,  H03G3/32 ,  H03G5/16 ,  G10L25/30 ,  G10L25/51 ,  G10L21/0364 ,  H04M7/00

Abstract: Volume leveler controller and controlling method are disclosed. In one embodiment, A volume leveler controller includes an audio content classifier for identifying the content type of an audio signal in real time; and an adjusting unit for adjusting a volume leveler in a continuous manner based on the content type as identified. The adjusting unit may configured to positively correlate the dynamic gain of the volume leveler with informative content types of the audio signal, and negatively correlate the dynamic gain of the volume leveler with interfering content types of the audio signal.

公开(公告)号：US20200293272A1

公开(公告)日：2020-09-17

申请号：US16827671

申请日：2020-03-23

Applicant: DOLBY LABORATORIES LICENSING CORPORATION ,  DOLBY INTERNATIONAL AB

Inventor： Jeroen Koppens ,  Jeffrey Riedmiller ,  Kristofer Kjoerling ,  Alexander Stahlmann ,  Holger Hoerich ,  Alan J. Seefeldt

IPC: G06F3/16 ,  H03G7/00 ,  H03G9/00 ,  G10L19/16 ,  H03G9/02 ,  H03G9/18 ,  H03G3/30 ,  H03G9/12 ,  H04S1/00 ,  H04S7/00 ,  G10L21/0324

Abstract: In an audio encoder, for audio content received in a source audio format, default gains are generated based on a default dynamic range compression (DRC) curve, and non-default gains are generated for a non-default gain profile. Based on the default gains and non-default gains, differential gains are generated. An audio signal comprising the audio content, the default DRC curve, and differential gains is generated. In an audio decoder, the default DRC curve and the differential gains are identified from the audio signal. Default gains are re-generated based on the default DRC curve. Based on the combination of the re-generated default gains and the differential gains, operations are performed on the audio content extracted from the audio signal.

公开(公告)号：US10595128B2

公开(公告)日：2020-03-17

申请号：US16431629

申请日：2019-06-04

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Michael J. Smithers ,  Brett G. Crockett ,  Alan J. Seefeldt ,  C. Phillip Brown

IPC: H04R5/02 ,  H04S7/00 ,  H04R3/04 ,  H04R3/12 ,  H04R3/14 ,  H04R1/26

Abstract: Embodiments are directed to a virtual height filter for use with or in an upward-firing speaker system that reflects sound off a ceiling to a listening location at a distance from a speaker, and that provides height cues to reproduce audio objects that have overhead audio components. A virtual height filter based on a directional hearing model is applied to the upward-firing driver signal to improve the perception of height for audio signals transmitted by the virtual height speaker to provide optimum reproduction of the overhead reflected sound. The virtual height filter is provided by any one or combination of analog or digital filter circuits, or mechanical structures including speaker grill, enclosure, or driver design or configuration.

公开(公告)号：US10586553B2

公开(公告)日：2020-03-10

申请号：US15747735

申请日：2016-09-21

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Nicholas L. Engel ,  Nicholas Luke Appleton ,  Alan J. Seefeldt

IPC: G10L21/0272 ,  G10L21/02 ,  H04S3/00 ,  H04R3/00 ,  H04S7/00 ,  G11B20/10

Abstract: In an apparatus configured to perform signal processing on audio data of a first sampling rate, methods disclosed herein comprise receiving audio data of a second sampling rate, the second sampling rate being higher than the first sampling rate. The methods comprise applying filtering to the audio data of the second sampling rate to thereby produce first filtered audio data and second filtered audio data, the first filtered audio data comprising mainly component frequencies which are audible to the human ear, the second filtered audio data comprising mainly components frequencies which are substantially inaudible to the human ear. The methods further comprise applying first signal processing to the first filtered audio data; and applying second signal processing to the second filtered audio data, the second signal processing having a lower computational complexity than the first signal processing. Corresponding apparatus and computer readable media are also disclosed herein.

公开(公告)号：US10523169B2

公开(公告)日：2019-12-31

申请号：US16365947

申请日：2019-03-27

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Brett G. Crockett ,  Alan J. Seefeldt

IPC: H04R29/00 ,  H03G5/00 ,  H03G3/30 ,  H03G7/00 ,  H03G9/00 ,  H03G1/00 ,  H04R3/04 ,  G10L21/038 ,  G10L25/21

Abstract: In some embodiments, a method for processing an audio signal in an audio processing apparatus is disclosed. The method includes receiving an audio signal and a parameter, the parameter indicating a location of an auditory event boundary. An audio portion between consecutive auditory event boundaries constitutes an auditory event. The method further includes applying a modification to the audio signal based in part on an occurrence of the auditory event. The parameter may be generated by monitoring a characteristic of the audio signal and identifying a change in the characteristic.

公开(公告)号：US20190327575A1

公开(公告)日：2019-10-24

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：US20190310822A1

公开(公告)日：2019-10-10

申请号：US16387073

申请日：2019-04-17

Applicant: DOLBY LABORATORIES LICENSING CORPORATION ,  DOLBY INTERNATIONAL AB

Inventor： Jeroen Koppens ,  Alexander Stahlmann ,  Jeffrey Riedmiller ,  Kristofer Kjoerling ,  Holger Hoerich ,  Alan J. Seefeldt

IPC: G06F3/16 ,  H03G9/12 ,  H03G3/30 ,  G10L21/0324 ,  H04S7/00 ,  H03G7/00 ,  H04S1/00 ,  G10L19/16 ,  H03G9/00

Abstract: In an audio encoder, for audio content received in a source audio format, default gains are generated based on a default dynamic range compression (DRC) curve, and non-default gains are generated for a non-default gain profile. Based on the default gains and non-default gains, differential gains are generated. An audio signal comprising the audio content, the default DRC curve, and differential gains is generated. In an audio decoder, the default DRC curve and the differential gains are identified from the audio signal. Default gains are re-generated based on the default DRC curve. Based on the combination of the re-generated default gains and the differential gains, operations are performed on the audio content extracted from the audio signal.