Audio-Video System Adapting Audio to Screen Size for 3D Depth
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Solution Overview
Problem
Existing multimedia systems fail to provide a realistic audio-visual experience for stereoscopic content when viewed on screens of different sizes, as the perception of visual depth and sound source distance are mismatched, leading to non-coherent audio effects.
Innovation Solution
An audio-video system that processes the audio component based on the size of the video signal displayed on the screen, allowing for time shifting and volume adjustment of audio tracks to synchronize with the perceived depth, using parameters such as screen size and parallax to enhance synchronization between audio and video.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the 3D video content is displayed on screens of different sizes, then the visual depth perception changes, but the sound source distance perception remains unchanged, causing mismatching between visual and audio effects
Solution Approach 1:
The audio playback system dynamically adjusts audio parameters (time shifting, volume, pan position) based on the detected screen size. The system continuously adapts the audio output to match the visual depth perception corresponding to different screen dimensions, ensuring coherent audio-visual synchronization across various display sizes.
Solution Approach 2:
The system changes audio parameters (playback time, volume level, pan position) according to the screen size parameter. By establishing a relationship between screen size and audio parameters, the system automatically adjusts the audio output to maintain realistic sound source distance perception that matches the visual depth effect on different sized screens.
2Reliability
If the audio tracks are delivered without adjustment for screen size, then the system is simple to operate, but the audio effects become non-realistic and mismatched with visual depth
Solution Approach 1:
The system automatically detects the screen size and self-adjusts the audio parameters without requiring manual user configuration. The audio processing unit autonomously applies time shifting, volume adjustment, and pan position changes based on the detected screen dimensions, making the complex adjustments transparent to the user while achieving realistic audio effects.
Solution Approach 2:
The system uses feedback from screen size detection to automatically adjust audio parameters. By monitoring the actual display dimensions and comparing them with reference sizes, the system dynamically modifies audio output parameters to maintain coherent audio-visual synchronization, ensuring realistic effects without manual intervention.
3Adaptability or versatility
If audio tracks are time-shifted and volume-adjusted based on screen size parameters, then audio-video synchronization is maintained across different screen sizes, but the processing complexity increases
Solution Approach 1:
The system performs preliminary audio processing by pre-calculating and applying time shifts, volume adjustments, and pan position changes based on detected screen size. These adjustments are applied in advance to the audio tracks before playback, ensuring that the audio is already synchronized with the visual depth perception when the content is displayed on screens of different sizes.
Data Source
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AI summary
It is disclosed a method for playing a multimedia content comprising a 3D video component and an audio component. The 3D video component is processed so as to deliver a video signal on a video output to be displayed on a screen (1010). The audio component is processed so as to deliver audio tracks to a plurality of loudspeakers (102). The method provides for processing said audio component so as to deliver said plurality of audio tracks based on a parameter associated to the size of an image of the video signal displayed on said screen (1010). An audio-video system implementing the method is also disclosed.