公开(公告)号：US20150146873A1

公开(公告)日：2015-05-28

申请号：US14409440

申请日：2013-06-17

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Christophe Chabanne ,  Brett Crockett ,  Spencer Hooks ,  Alan Seefeldt ,  Nicolas R. Tsingos ,  Mark Tuffy ,  Rhonda Wilson

IPC: H04S7/00

CPC classification number: H04S7/305 ,  H04S3/008 ,  H04S2400/03 ,  H04S2420/03

Abstract: Embodiments are described for a method and system of rendering and playing back spatial audio content using a channel-based format. Spatial audio content that is played back through legacy channel-based equipment is transformed into the appropriate channel-based format resulting in the loss of certain positional information within the audio objects and positional metadata comprising the spatial audio content. To retain this information for use in spatial audio equipment even after the audio content is rendered as channel-based audio, certain metadata generated by the spatial audio processor is incorporated into the channel-based data. The channel-based audio can then be sent to a channel-based audio decoder or a spatial audio decoder. The spatial audio decoder processes the metadata to recover at least some positional information that was lost during the down-mix operation by upmixing the channel-based audio content back to the spatial audio content for optimal playback in a spatial audio environment.

Abstract translation: 描述了使用基于频道的格式来渲染和回放空间音频内容的方法和系统的实施例。 通过基于传统的基于信道的设备回放的空间音频内容被转换成适当的基于频道的格式，导致音频对象内的某些位置信息的丢失和包括空间音频内容的位置元数据。 即使在将音频内容呈现为基于频道的音频之后，为了保留用于空间音频设备的该信息，由空间音频处理器生成的某些元数据被并入到基于频道的数据中。 然后可以将基于频道的音频发送到基于频道的音频解码器或空间音频解码器。 空间音频解码器处理元数据以恢复低混音操作期间丢失的至少一些位置信息，通过将基于频道的音频内容上回到空间音频内容以在空间音频环境中进行最佳重放。

公开(公告)号：US09648440B2

公开(公告)日：2017-05-09

申请号：US14759182

申请日：2014-01-07

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Brett G. Crockett ,  Christophe Chabanne ,  Mark Tuffy ,  Alan J. Seefeldt ,  C. Phillip Brown ,  Patrick Turnmire

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

CPC classification number: H04S7/307 ,  H04R1/02 ,  H04R1/26 ,  H04R3/04 ,  H04R3/12 ,  H04R3/14 ,  H04R5/02 ,  H04R2205/024

Abstract: Embodiments are directed to speakers and circuits that reflect sound off a ceiling to a listening location at a distance from a speaker. The reflected sound provides height cues to reproduce audio objects that have overhead audio components. The speaker comprises upward firing drivers to reflect sound off of the upper surface and represents a virtual height speaker. 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 may be incorporated as part of a crossover circuit that separates the full band and sends high frequency sound to the upward-firing driver.

公开(公告)号：US09622014B2

公开(公告)日：2017-04-11

申请号：US14409440

申请日：2013-06-17

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Christophe Chabanne ,  Brett Crockett ,  Spencer Hooks ,  Alan Seefeldt ,  Nicolas R. Tsingos ,  Mark Tuffy ,  Rhonda Wilson

IPC: H04S7/00 ,  H04S3/00

CPC classification number: H04S7/305 ,  H04S3/008 ,  H04S2400/03 ,  H04S2420/03

Abstract: Embodiments are described for a method and system of rendering and playing back spatial audio content using a channel-based format. Spatial audio content that is played back through legacy channel-based equipment is transformed into the appropriate channel-based format resulting in the loss of certain positional information within the audio objects and positional metadata comprising the spatial audio content. To retain this information for use in spatial audio equipment even after the audio content is rendered as channel-based audio, certain metadata generated by the spatial audio processor is incorporated into the channel-based data. The channel-based audio can then be sent to a channel-based audio decoder or a spatial audio decoder. The spatial audio decoder processes the metadata to recover at least some positional information that was lost during the down-mix operation by upmixing the channel-based audio content back to the spatial audio content for optimal playback in a spatial audio environment.