3D Audio Video Processing Apparatus Depth Synchronization
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Solution Overview
Problem
Current 3D audio/video systems face challenges in synchronizing 3D video and audio effects, leading to high development and production costs, increased design complexity, and lower accuracy in audio depth level adjustments, resulting in suboptimal user experiences.
Innovation Solution
A method and apparatus that utilize the MPEG file format to signal depth information, allowing for the generation of synchronized 3D audio effects based on 3D video depth, by including frame identification, depth level, and depth range information, enabling efficient transmission and processing of enhanced 3D content.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If 3D audio/video systems use independent legacy 3D video technology and legacy 3D audio technology, then 3D video effect and 3D audio effect can be applied separately, but synchronization between 3D video and 3D audio effects is difficult to achieve
Solution Approach 1:
The patent merges 3D video depth information and 3D audio depth information into a unified processing framework. The audio processing apparatus receives both video and audio signals, extracts depth information from video frames, and applies corresponding depth effects to audio signals to achieve synchronized 3D audio-visual experience.
Solution Approach 2:
The patent introduces depth information as an intermediary element that bridges 3D video and 3D audio processing. By extracting depth maps from video frames and applying them as control parameters for audio depth effects, the system achieves synchronization without directly coupling the video and audio processing pipelines.
2Measurement precision
If 3D audio depth level adjustments are made with high precision, then audio depth accuracy is improved, but device design complexity increases
Solution Approach 1:
The patent changes the parameter representation by using depth level values extracted from video depth maps (ranging from 0 to maximum depth) to directly control audio processing parameters. This parameter mapping approach simplifies the device design while maintaining high precision audio depth adjustment, as the depth level values naturally provide the required granularity without complex conversion algorithms.
3Reliability
If detailed depth information is transmitted for each video frame, then 3D audio synchronization accuracy is improved, but transmission efficiency decreases due to redundant data
Solution Approach 1:
The patent extracts only the essential depth information from video frames - specifically the depth level values representing the distance of objects from the camera. By extracting and transmitting only this critical depth parameter rather than full 3D spatial coordinates or complete scene geometry, the system achieves accurate audio synchronization with minimal data transmission.
Solution Approach 2:
The patent applies partial action by transmitting depth information at selected frames or using interpolated depth values for intermediate frames. Rather than processing and transmitting detailed depth data for every single video frame, the system transmits depth information at key moments and derives intermediate values through interpolation, reducing transmission overhead while maintaining synchronization accuracy.
Data Source
AI summary
The enhanced 3D audio/video processing apparatus according to one embodiment of the present invention may comprise: a three-dimensional (3D) content generating unit for generating 3D content including video content and analog content; a depth information generating unit for generating depth information for the video frames constituting the video content; and a signal generating unit for generating a 3D enhanced signal including the generated 3D content and the depth information. Further, the enhanced 3D audio/video processing apparatus according to another embodiment of the present invention may comprise: a signal processing unit for processing the 3D enhanced signal including the 3D content including the video content and the audio content: a depth information extraction unit for acquiring the depth information of the video frames constituting the video content from the processed 3D enhanced signal; a 3D audio effect generating unit for generating 3D audio effect based on the acquired depth information; and a 3D audio content generating unit for generating 3D audio content by applying the generated 3D audio effect.