Supplemental Audio Renderer Configuration for Immersive Playback
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Solution Overview
Problem
Existing audio players face challenges in maintaining artistic intent and immersive audio rendering due to limitations in audio configuration data and timing constraints, leading to a loss of intended sound quality in playback environments.
Innovation Solution
The system packages audio content with specific audio renderer types, sub-types, and versions, along with supplemental audio rendering configuration (SARC) data, to enhance immersive audio rendering by configuring players to utilize the correct renderers and initialize them with SARC configuration tables and payloads, ensuring consistent sound quality across environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If audio content is transmitted without renderer configuration data, then transmission simplicity is maintained, but artistic intent and immersive audio rendering quality are lost
Solution Approach 1:
The content creation tool packages renderer configuration data (SARC data) with the audio content before transmission. This preliminary action ensures that the player receives all necessary configuration information (configuration tables, mapping tables, payloads) in advance, eliminating the need for complex runtime configuration and ensuring consistent audio rendering quality across different playback environments.
2Reliability
If audio content is transmitted without renderer type and version information, then bitstream simplicity is maintained, but player compatibility and rendering consistency are compromised
Solution Approach 1:
The content creation tool includes renderer type, sub-type, and version information in the bitstream packaging phase. This preliminary inclusion of identification data ensures that the player can accurately identify and select the correct audio renderer without requiring additional runtime queries or configurations, thereby ensuring rendering consistency while minimizing the increase in bitstream size.
3Productivity
If SARC configuration data is not packaged with audio content, then transmission bandwidth is reduced, but audio renderer initialization and configuration are compromised
Solution Approach 1:
The content creation tool packages SARC configuration data (configuration tables, mapping tables) with the audio content before transmission. This ensures that the audio renderer receives all necessary initialization and configuration data in advance, eliminating the need for separate configuration transmission steps and simplifying the renderer initialization process while maintaining transmission efficiency.
4Measurement precision
If audio content is transmitted without channel index information, then bitstream simplicity is maintained, but spatial audio rendering accuracy is reduced
Solution Approach 1:
The content creation tool includes start channel index and end channel index information in the bitstream packaging phase. This preliminary inclusion of spatial configuration data ensures that the audio renderer can accurately determine the active channel range without requiring additional runtime calculations or configuration exchanges, thereby improving spatial rendering accuracy while minimizing the increase in data volume.
Data Source
AI summary
A system may generate supplemental audio rendering configuration (SARC) data to enhance immersive audio rendering. The system may package, in one or more bitstreams, audio content generated by a content creation tool for input to an audio renderer, SARC configuration data corresponding to the audio content, the SARC configuration data including a SARC configuration table and a SARC mapping table to initialize the audio renderer, and a SARC payload to be used by the audio renderer to enhance immersive audio rendering. The one or more bitstreams may be provided for transmission to a player. The one or more bitstreams may configure the player to utilize the SARC configuration data and the SARC payload for playback of the audio content in a playback environment. Other aspects are also described and claimed.