公开(公告)号：US20150348558A1

公开(公告)日：2015-12-03

申请号：US14822168

申请日：2015-08-10

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Jeffrey Riedmiller ,  Farhad Farahani ,  Michael Hoffmann ,  Michael Grant ,  Freddie Sanchez

IPC: G10L19/002

CPC classification number: G10L19/018 ,  G10L19/167

Abstract: Methods for generating or decoding an encoded audio bitstream including audio data and supplementary data (e.g., metadata and/or unrelated audio data), where at least some of the supplementary data is included as LSBs of audio segments, and/or at least some of the supplementary data is included in guard bands. Typical embodiments provide a scalable and video synchronous format compatible with real-time and file-based infrastructure components that support the SMPTE 337 format for carrying data in AES3 serial bitstreams, and/or provide a framework for extending distribution codecs to scale beyond an 8-channel limit to support multiples of 8 channels synchronously across multiple AES3 interfaces. Another aspect is an audio processing unit configured to perform any embodiment of the method or including a buffer memory storing at least one segment of an audio bitstream generated in accordance with any embodiment of the method.

Abstract translation: 用于生成或解码包括音频数据和补充数据（例如，元数据和/或不相关的音频数据）的编码音频比特流的方法，其中至少一些补充数据被包括为音频段的LSB，和/或至少一些 辅助数据包含在保护频带中。 典型的实施例提供了与支持用于在AES3串行比特流中传送数据的SMPTE 337格式的实时和基于文件的基础设施组件兼容的可扩展和视频同步格式，和/或提供用于扩展分布式编解码器以扩展到8- 通道限制，以跨多个AES3接口同步支持8个通道的倍数。 另一方面是被配置为执行该方法的任何实施例的音频处理单元，或者包括存储根据该方法的任何实施例生成的音频比特流的至少一个段的缓冲存储器。

公开(公告)号：US09900720B2

公开(公告)日：2018-02-20

申请号：US14779391

申请日：2014-03-25

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Michael Grant ,  Timothy Addy ,  Michael Hoffmann ,  Sachin Nanda

IPC: H04S3/00 ,  H04H20/89 ,  H04N21/854 ,  H04N21/81

CPC classification number: H04S3/002 ,  H04H20/89 ,  H04N21/8113 ,  H04N21/85406 ,  H04S3/004 ,  H04S2400/01 ,  H04S2400/03

Abstract: Audio stems are generated to contain audio content to be mixed by recipient devices. Multiple sets of mixing instructions for multiple audio channel configurations are determined, for example, based on input of audio producers. Each set of mixing instructions is to be used for mixing the audio stems for rendering in a corresponding audio channel configuration. A bitstream is generated to carry both the audio stems and the sets of mixing instructions. A recipient device receives the bitstream as the input. The recipient device determines a specific audio channel configuration to be used for rendering the plurality of audio stems. Based on that determination, a specific set of mixing instructions is retrieved from the bitstream and used to mix the audio stems.