Dynamic Delay Compensation for Immersive Audio Localization
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Solution Overview
Problem
Existing video display systems fail to adapt to changes in delay time, leading to suboptimal delay compensation and a deviation in sound image localization for users.
Innovation Solution
An information processing apparatus and method that predict the total amount of delay in a reproduction system, including a sensor unit and a reproduction unit, and compensate for this delay by generating a reproduction signal based on the predicted head position of the user.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If delay compensation is performed using a fixed delay value, then the processing is simple, but the compensation accuracy deteriorates when delay time changes
Solution Approach 1:
The patent applies dynamics by transitioning from a fixed delay value to a dynamically updated delay value. The delay compensation amount is continuously updated based on the relationship between head position and delay time, allowing the system to adapt to changing delay conditions while maintaining accurate sound image localization.
Solution Approach 2:
The patent implements feedback by using the detected head position to update the delay compensation amount. The system continuously monitors head position changes and adjusts the delay compensation accordingly, creating a closed-loop control mechanism that maintains accuracy despite varying delay times.
2Measurement precision
If the delay compensation amount is updated frequently to adapt to changing delay times, then the compensation accuracy is improved, but the processing complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-establishing the relationship between head position and delay time. This relationship is determined in advance and stored, allowing the system to quickly retrieve and apply appropriate delay compensation values without performing complex real-time calculations, thus reducing processing complexity while maintaining accuracy.
3Device complexity
If a fixed head position is used for delay compensation, then the processing is simple, but the sound image localization accuracy deteriorates during head movement
Solution Approach 1:
The patent implements feedback by continuously updating the delay compensation amount based on the detected head position. As the user moves their head, the system detects the new position and adjusts the delay compensation accordingly, ensuring that sound images remain accurately localized to their intended positions relative to the user's current orientation.
Data Source
AI summary
For example, to enable optimal delay compensation adapted to a change in delay time to be performed. An information processing apparatus includes a control unit that performs processing of: predicting a total amount of delay that changes according to a state of a reproduction system including a sensor unit that senses a position of an observation target and a reproduction unit that reproduces a reproduction signal generated on the basis of sensing data of the sensor unit, the total amount of delay possibly occurring between sensing by the sensor unit and reproduction by the reproduction unit; and compensating for a delay of the predicted total amount of delay and then generating the reproduction signal.