公开(公告)号：US20210051435A1

公开(公告)日：2021-02-18

申请号：US17012076

申请日：2020-09-04

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Kuan-Chieh YEN ,  Dirk Jeroen BREEBAART ,  Grant A. DAVIDSON ,  Rhonda WILSON ,  David M. COOPER ,  Zhiwei SHUANG

IPC: H04S7/00 ,  G10L19/008 ,  H04S3/00

Abstract: In some embodiments, virtualization methods for generating a binaural signal in response to channels of a multi-channel audio signal, which apply a binaural room impulse response (BRIR) to each channel including by using at least one feedback delay network (FDN) to apply a common late reverberation to a downmix of the channels. In some embodiments, input signal channels are processed in a first processing path to apply to each channel a direct response and early reflection portion of a single-channel BRIR for the channel, and the downmix of the channels is processed in a second processing path including at least one FDN which applies the common late reverberation. Typically, the common late reverberation emulates collective macro attributes of late reverberation portions of at least some of the single-channel BRIRs. Other aspects are headphone virtualizers configured to perform any embodiment of the method.

公开(公告)号：US20190373397A1

公开(公告)日：2019-12-05

申请号：US16541079

申请日：2019-08-14

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Kuan-Chieh YEN ,  Dirk Jeroen BREEBAART ,  Grant A. DAVIDSON ,  Rhonda WILSON ,  David M. Cooper ,  Zhiwei SHUANG

IPC: H04S7/00 ,  G10L19/008

Abstract: In some embodiments, virtualization methods for generating a binaural signal in response to channels of a multi-channel audio signal, which apply a binaural room impulse response (BRIR) to each channel including by using at least one feedback delay network (FDN) to apply a common late reverberation to a downmix of the channels. In some embodiments, input signal channels are processed in a first processing path to apply to each channel a direct response and early reflection portion of a single-channel BRIR for the channel, and the downmix of the channels is processed in a second processing path including at least one FDN which applies the common late reverberation. Typically, the common late reverberation emulates collective macro attributes of late reverberation portions of at least some of the single-channel BRIRs. Other aspects are headphone virtualizers configured to perform any embodiment of the method.

公开(公告)号：US20190037331A1

公开(公告)日：2019-01-31

申请号：US16073149

申请日：2017-01-26

Applicant: Dolby Laboratories Licensing Corporation ,  Dolby International AB

Inventor： Leif Jonas SAMUELSSON ,  Dirk Jeroen BREEBAART ,  David Matthew COOPER ,  Jeroen KOPPENS

IPC: H04S1/00 ,  H04S7/00 ,  H04R5/04

CPC classification number: H04S1/002 ,  H04R5/04 ,  H04S3/00 ,  H04S3/008 ,  H04S3/02 ,  H04S7/303 ,  H04S2420/01 ,  H04S2420/03

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：US20190035410A1

公开(公告)日：2019-01-31

申请号：US16073132

申请日：2017-01-23

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Dirk Jeroen BREEBAART

IPC: G10L19/008 ,  G10L19/02

Abstract: Encoding/decoding an audio signal having one or more audio components, wherein each audio component is associated with a spatial location. A first audio signal presentation (z) of the audio components, a first set of transform parameters (w(f)), and signal level data (β2) are encoded and transmitted to the decoder. The decoder uses the first set of transform parameters (w(f)) to form a reconstructed simulation input signal intended for an acoustic environment simulation, and applies a signal level modification (α) to the reconstructed simulation input signal. The signal level modification is based on the signal level data (β2) and data (p2) related to the acoustic environment simulation. The attenuated reconstructed simulation input signal is then processed in an acoustic environment simulator. With this process, the decoder does not need to determine the signal level of the simulation input signal, thereby reducing processing load.

公开(公告)号：US20180295464A1

公开(公告)日：2018-10-11

申请号：US16009164

申请日：2018-06-14

Applicant: DOLBY LABORATORIES LICENSING CORPORATION ,  DOLBY INTERNATIONAL AB

Inventor： Dirk Jeroen BREEBAART ,  Lie LU ,  Nicolas R. TSINGOS ,  Antonio MATEOS SOLE

IPC: H04S7/00 ,  G10L19/20 ,  G10L19/018 ,  G10L19/008 ,  G10L19/00 ,  H04S3/00

Abstract: Diffuse or spatially large audio objects may be identified for special processing. A decorrelation process may be performed on audio signals corresponding to the large audio objects to produce decorrelated large audio object audio signals. These decorrelated large audio object audio signals may be associated with object locations, which may be stationary or time-varying locations. For example, the decorrelated large audio object audio signals may be rendered to virtual or actual speaker locations. The output of such a rendering process may be input to a scene simplification process. The decorrelation, associating and/or scene simplification processes may be performed prior to a process of encoding the audio data.

公开(公告)号：US20180233156A1

公开(公告)日：2018-08-16

申请号：US15752699

申请日：2016-08-23

Applicant: DOLBY LABORATORIES LICENSING CORPORATION ,  DOLBY INTERNATIONAL AB

Inventor： Dirk Jeroen BREEBAART ,  David Matthew COOPER ,  Leif Jonas SAMUELSSON

IPC: G10L19/02 ,  G10L19/008

Abstract: A method for representing a second presentation of audio channels or objects as a data stream, the method comprising the steps of: (a) providing a set of base signals, the base signals representing a first presentation of the audio channels or objects; (b) providing a set of transformation parameters, the transformation parameters intended to transform the first presentation into the second presentation; the transformation parameters further being specified for at least two frequency bands and including a set of multi-tap convolution matrix parameters for at least one of the frequency bands.

公开(公告)号：US20160210972A1

公开(公告)日：2016-07-21

申请号：US14916029

申请日：2014-09-09

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Dossym NURMUKHANOV ,  Sripal S. MEHTA ,  Dirk Jeroen BREEBAART

IPC: G10L19/018 ,  G10L19/008

CPC classification number: G10L19/018 ,  G10L19/008

Abstract: A method for selecting a subset of channels of (e.g., determined from) at least a segment of a multichannel audio program for watermarking and watermarking the selected subset of channels, and a system or device configured to implement any embodiment of the method, or including a buffer which stores at least one frame or other segment of a multichannel audio program generated by any embodiment of the method or steps thereof. Some embodiments generate watermarking metadata during program creation including by analyzing audio content to be included in segments of a multichannel program, determining at least one watermark suitability value for each channel of each of the segments, and including the watermark suitability values (or watermarking data determined therefrom) as metadata in the program. Some embodiments are implemented by a playback system which determines the selected subset of channels to be watermarked.

Abstract translation: 一种用于选择多通道音频节目的至少一个段的信道子集的子集的方法，用于对选定的信道子集进行水印和水印，以及被配置为实现该方法的任何实施例的系统或设备，或包括 存储由该方法或其任何实施方式生成的多声道音频节目的至少一个帧或其他片段的缓冲器。 一些实施例在程序创建期间产生水印元数据，包括通过分析要包括在多通道程序的段中的音频内容，为每个段的每个通道确定至少一个水印适用性值，并且包括水印适用性值（或确定的水印数据 作为程序中的元数据。 一些实施例由确定要被加水印的所选择的信道子集的重放系统来实现。

公开(公告)号：US20160150343A1

公开(公告)日：2016-05-26

申请号：US14900117

申请日：2014-06-17

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Jun WANG ,  Lie LU ,  Mingqing HU ,  Dirk Jeroen BREEBAART ,  Nicolas R. TSINGOS

IPC: H04S7/00 ,  G10L19/008 ,  G10L19/02

CPC classification number: H04S7/30 ,  G10L19/008 ,  G10L19/0204 ,  G10L19/20 ,  G10L21/0272 ,  H04S3/002 ,  H04S5/005 ,  H04S2400/11 ,  H04S2400/13 ,  H04S2400/15 ,  H04S2420/07

Abstract: Embodiments of the present invention relate to adaptive audio content generation. Specifically, a method for generating adaptive audio content is provided. The method comprises extracting at least one audio object from channel-based source audio content, and generating the adaptive audio content at least partially based on the at least one audio object. Corresponding system and computer program product are also disclosed.

Abstract translation: 本发明的实施例涉及自适应音频内容生成。 具体地，提供了一种用于产生自适应音频内容的方法。 所述方法包括从基于频道的源音频内容中提取至少一个音频对象，以及至少部分地基于所述至少一个音频对象生成所述自适应音频内容。 还公开了相应的系统和计算机程序产品。

公开(公告)号：US20250104720A1

公开(公告)日：2025-03-27

申请号：US18886752

申请日：2024-09-16

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Dirk Jeroen BREEBAART

IPC: G10L19/008 ,  G10L19/00 ,  G10L19/012 ,  G10L19/02

Abstract: Encoding/decoding an audio signal having one or more audio components, wherein each audio component is associated with a spatial location. A first audio signal presentation (z) of the audio components, a first set of transform parameters (w(f)), and signal level data (β2) are encoded and transmitted to the decoder. The decoder uses the first set of transform parameters (w(f)) to form a reconstructed simulation input signal intended for an acoustic environment simulation, and applies a signal level modification (α) to the reconstructed simulation input signal. The signal level modification is based on the signal level data (β2) and data (p2) related to the acoustic environment simulation. The attenuated reconstructed simulation input signal is then processed in an acoustic environment simulator. With this process, the decoder does not need to determine the signal level of the simulation input signal, thereby reducing processing load.

公开(公告)号：US20250080943A1

公开(公告)日：2025-03-06

申请号：US18829074

申请日：2024-09-09

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Kuan-Chieh YEN ,  Dirk Jeroen BREEBAART ,  Grant A. DAVIDSON ,  Rhonda WILSON ,  David M. COOPER ,  Zhiwei SHUANG

IPC: H04S7/00 ,  G10L19/008 ,  H04S3/00

Abstract: In some embodiments, virtualization methods for generating a binaural signal in response to channels of a multi-channel audio signal, which apply a binaural room impulse response (BRIR) to each channel including by using at least one feedback delay network (FDN) to apply a common late reverberation to a downmix of the channels. In some embodiments, input signal channels are processed in a first processing path to apply to each channel a direct response and early reflection portion of a single-channel BRIR for the channel, and the downmix of the channels is processed in a second processing path including at least one FDN which applies the common late reverberation. Typically, the common late reverberation emulates collective macro attributes of late reverberation portions of at least some of the single-channel BRIRs. Other aspects are headphone virtualizers configured to perform any embodiment of the method.