Spatial Audio Effect Adjustment for Head-Posture Changes
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Solution Overview
Problem
Existing spatial audio technologies fail to adjust sound characteristics when the user's head posture deviates from facing the center of the screen, leading to a suboptimal listening experience.
Innovation Solution
An audio effect adjustment method and computing apparatus that determine the sound source direction and head posture changes, adjusting sound characteristics based on the direction difference to provide immersive spatial audio effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If spatial audio effects are applied assuming the user is facing the center of the screen, then the audio adjustment is simplified, but the audio quality deteriorates when the head is not facing the center
Solution Approach 1:
The patent applies dynamics by making the audio adjustment parameters dynamic rather than static. The system continuously monitors head posture and adjusts audio parameters in real-time based on the actual head orientation, transforming the fixed audio adjustment model into an adaptive one that responds to user movement.
Solution Approach 2:
The patent changes the audio parameters based on head posture detection. By detecting parameters such as head rotation angles and adjusting the audio characteristics accordingly, the system adapts the spatial audio effects to match the user's actual head position, maintaining audio quality across different orientations.
2Adaptability or versatility
If the system adjusts audio effects based on actual head orientation, then the listening experience improves, but the system complexity increases
Solution Approach 1:
The patent implements feedback by using head posture detection to continuously monitor the user's head orientation and using this information to adjust audio parameters. This closed-loop system ensures that the audio effects are constantly adapted to match the actual head position, improving adaptability while managing complexity through intelligent control.
Solution Approach 2:
The patent achieves universality by creating a system that can handle multiple head orientations and positions. The audio adjustment mechanism is designed to work effectively regardless of where the user's head is oriented, making the system universally applicable to various listening scenarios without requiring separate adjustment mechanisms for each position.
3Speed
If spatial audio effects are applied with fixed head orientation assumptions, then the processing is faster, but the soundstage balance is lost when head posture changes
Solution Approach 1:
The patent applies preliminary action by pre-processing and storing audio adjustment parameters for different head orientations. The system prepares adjustment data in advance for various possible head positions, allowing for rapid retrieval and application when head posture changes are detected, thus maintaining both speed and soundstage balance.
Data Source
AI summary
An audio effect adjustment method and a computing apparatus for audio effect adjustment are provided. A sound source direction corresponding to sound characteristics of a sound signal is determined. The sound characteristics are related to the amplitude and/or phase of 5 the sound signal recorded from a sound source located in the sound source direction. Posture changes of a head are determined. The posture changes include a rotation angle of the head from a first orientation to a second orientation. The head is used for wearing the sound playing apparatus. The sound characteristics of the sound signal are adjusted according to a direction difference between the sound source direction and the second orientation. The direction difference is an 10 angle between the sound source direction and the modified second orientation, as an orientation after the posture change from the sound source direction.