Spatial Audio Focus Shape Control for Personalized Sound Rendering
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Solution Overview
Problem
Existing spatial audio playback technologies lack the ability to effectively control the shape of the audio focus in addition to direction and amount, which is necessary for personalized and dynamic audio experiences in media with multiple viewing directions.
Innovation Solution
An apparatus and method for processing spatial audio signals to control the relative emphasis within a defined focus shape by adjusting parameters such as focus direction, width, height, radius, distance, and depth, allowing for customizable audio focus shapes based on user preferences and dynamic changes in audio scenes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If spatial audio playback is provided with control over focus direction and amount, then audio personalization is improved, but the ability to control focus shape remains insufficient
Solution Approach 1:
The patent implements dynamic control of focus parameters including direction, amount, width, height, radius, distance, and depth. The system allows real-time adjustment of these parameters to adapt to different user preferences and audio scenes, transforming static audio playback into a dynamic, personalized experience. The focus shape can be continuously modified by adjusting multiple parameters simultaneously, enabling versatile audio personalization without requiring fundamentally different system architectures.
2Ease of operation
If multiple focus parameters are introduced to define focus shape, then audio scene control is improved, but system complexity increases
Solution Approach 1:
The patent segments the focus control into multiple independent parameters: direction, amount, width, height, radius, distance, and depth. Each parameter can be adjusted separately to control different aspects of the audio focus. This segmentation allows users to control the focus shape through discrete, manageable parameters rather than requiring complex holistic control, improving ease of operation while systematically managing the complexity through modular parameter processing.
Solution Approach 2:
The system controls the audio focus by changing multiple parameters simultaneously - direction for orientation, amount for emphasis level, width/height/radius for spatial extent, and distance/depth for positioning. By providing direct control over these physical parameters, the system achieves intuitive audio scene control without requiring complex algorithms, as each parameter directly corresponds to a perceptual aspect of the audio focus.
Data Source
AI summary
An apparatus for spatial audio reproduction including circuitry configured to: obtain at least one focus parameter configured to define a focus shape; process a spatial audio signal that represents an audio scene to generate a processed spatial audio signal that represents a modified audio scene, so as to control relative emphasis in, at least in part, a portion of the spatial audio signal in the focus shape relative to at least in part other portions of the spatial audio signals outside the focus shape; and output the processed spatial audio signal, wherein the modified audio scene enables the relative emphasis in, at least in part, the portion of the spatial audio signal in the focus shape relative to at least in part other portions of the spatial audio signals outside the focus shape.