Audio Rendering System Spatial Encoding Compatibility
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Solution Overview
Problem
Current audio rendering systems face challenges in providing a unified, efficient, and compatible solution for various audio formats and playback environments, leading to inefficiencies and poor compatibility across different user scenarios and platforms.
Innovation Solution
An audio rendering system and method that spatially encodes and decodes audio signals based on metadata, allowing for compatibility with multiple audio formats such as scene-based, channel-based, and object-based representations, and adapts to different playback apparatuses by converting input signals into a common spatial format for optimal rendering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If audio signals are processed in multiple different formats for different playback environments, then compatibility with various user scenarios is improved, but system complexity and processing efficiency deteriorate
Solution Approach 1:
The patent introduces a common spatial audio format as an intermediary representation layer between diverse input audio formats and different playback devices. The encoding module converts various input formats (stereo, surround sound, spatial audio) into this common spatial format, which then serves as the standardized input for the rendering module. This intermediary format acts as a universal translator that simplifies the system architecture by providing a single standardized interface between encoding and rendering stages.
Solution Approach 2:
The audio processing system is segmented into distinct functional modules: an encoding module that handles format conversion from various input formats to a common spatial format, and a rendering module that handles audio rendering for different playback devices. This segmentation allows each module to specialize in specific tasks, improving overall system efficiency and maintainability while maintaining versatility across different audio formats and playback environments.
2Adaptability or versatility
If audio signals are re-rendered for different playback apparatuses, then adaptability to various devices is improved, but processing time and efficiency deteriorate
Solution Approach 1:
The encoding module performs preliminary action by converting all input audio signals into the common spatial audio format before they reach the rendering module. This pre-processing step standardizes the audio representation in advance, so that when the rendering module receives the standardized spatial format audio, it can efficiently process it for different playback apparatuses without performing complex format conversions during the rendering stage. This preliminary format unification significantly reduces processing time and improves overall system efficiency.
3Manufacturing precision
If detailed spatial encoding is performed, then audio rendering quality is improved, but data transmission size and complexity increase
Solution Approach 1:
The patent employs parameter changes in the spatial audio encoding process, transforming audio signals from traditional channel-based representations to a common spatial format that uses different parameter representations (such as spherical harmonic coefficients or other spatial audio parameters). This parameter transformation enables high-quality spatial audio rendering while controlling data size, as the spatial parameters can be efficiently compressed and transmitted. The rendering module then interprets these parameters according to the target playback apparatus requirements, achieving quality optimization without excessive data overhead.
Data Source
AI summary
The present invention relates to an audio rendering system and method and an electronic apparatus. The audio rendering system comprises: an audio signal encoding module, configured to for an audio signal in a specific audio content format, performing spatial encoding on the audio signal in the specific audio content format on the basis of metadata related information associated with the audio signal in the specific audio content format to obtain an encoded audio signal; and an audio signal decoding module, configured to performing spatial decoding on the encoded audio signal to obtain a decoded audio signal for audio rendering.