3D Audio Rendering via Image Depth Indexing
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Solution Overview
Problem
Current stereophonic sound technologies fail to effectively generate sound corresponding to the three-dimensional effects of images, limiting the immersive audio experience for users viewing 3D stereoscopic content.
Innovation Solution
An audio signal processing apparatus that estimates index information from 3D image data to apply a three-dimensional effect to audio objects in various directions, using sound extension, depth, and elevation information, and a rendering unit to enhance the audio experience by synchronizing audio with image object movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple speakers are placed around the user to provide stereophonic sound, then localization at different locations and perspective is improved, but the three-dimensional effect corresponding to image object changes cannot be provided
Solution Approach 1:
The patent transitions from traditional 2D stereophonic sound to 3D spatial audio by introducing depth information derived from image object disparity. The audio rendering unit applies three-dimensional effects in right-left, up-down, and front-back directions, adding a temporal and spatial dimension that synchronizes audio with image depth changes.
Solution Approach 2:
The patent introduces an audio signal processing apparatus as an intermediary between the image processing system and the audio output system. This apparatus extracts depth information from image data and uses it to modulate audio signals, creating a bridge that enables three-dimensional audio effects without requiring multiple physical speakers.
2Area of stationary object
If stereophonic sound is generated using traditional multi-speaker systems, then spatial audio coverage is improved, but synchronization with image object depth changes is lost
Solution Approach 1:
The patent implements a feedback mechanism where depth information from image objects is continuously extracted and used to dynamically adjust audio parameters. The audio signal processing apparatus monitors image object position and disparity in real-time, providing feedback that drives temporal and spatial modulation of audio signals to maintain synchronization.
Solution Approach 2:
The patent transforms static audio positioning into dynamic audio rendering by continuously adjusting audio parameters based on moving image objects. The system adapts audio depth, pan, and timing in real-time as image objects move and change depth, creating a dynamic audio experience that follows the visual content.
Data Source
AI summary
An audio signal processing apparatus including an index estimation unit that receives three-dimensional image information as an input and generates index information for applying a three-dimensional effect to an audio object in at least one direction of right, left, up, down, front, and back directions, based on the three-dimensional image information; and a rendering unit for applying a three-dimensional effect to the audio object in at least one direction of right, left, up, down, front, and back directions, based on the index information.