Binaural Pose Correction Using Weighted Mixing for Low-Latency AR/VR

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing Augmented Reality (AR)/Virtual Reality (VR) systems face challenges in providing realistic sensations due to outdated pose data, leading to degraded immersive experiences, especially in lightweight devices with limited processing power and battery capacity.

Innovation Solution

A low-complexity method for binaural pose correction is implemented on lightweight devices, utilizing weighted mixing and signal prediction to generate binaural signals for different head rotations, reducing latency and improving immersion quality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If frequency domain processing methods are used for binaural pose correction, then processing accuracy is improved, but computational complexity and latency increase

Engineering Contradiction:

Improvepose correction accuracyVSAvoidcomputational complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent extracts only the essential components needed for pose correction by using time-domain signal processing instead of full frequency domain processing. This reduces computational complexity while maintaining the core functionality of correcting binaural signals for head pose changes, directly addressing the contradiction between accuracy and complexity.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent employs simpler, computationally less intensive methods that can be executed quickly on lightweight devices. By using time-domain processing with simplified algorithms, the system achieves acceptable pose correction with lower computational resources, effectively trading some precision for reduced complexity and latency.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

2Reliability

If complex processing algorithms are implemented to correct pose deviations, then immersion quality is improved, but processing speed and latency worsen

Engineering Contradiction:

Improveimmersion qualityVSAvoidprocessing latency

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent performs preliminary processing by pre-calculating or pre-positioning correction parameters that can be applied quickly during runtime. This allows the system to maintain high immersion quality while reducing real-time processing latency, as the computationally intensive work is done in advance rather than during critical playback moments.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent implements dynamic adaptation by adjusting processing intensity based on actual needs. The system monitors pose deviations and applies correction algorithms selectively, increasing processing only when necessary to maintain immersion quality, thereby reducing overall latency while preserving reliability.

Inventive Principle:

Principle #15Dynamics

3Ease of operation

If lightweight devices are used for portability, then ease of operation is improved, but processing power and battery capacity deteriorate

Engineering Contradiction:

Improvedevice portabilityVSAvoidprocessing power

Core Design Contradiction:

Ease of operationVSPower

Solution Approach 1:

The patent replaces complex mechanical/computational processing systems with simpler acoustic signal processing methods. By using time-domain processing and simplified algorithms, the system achieves effective pose correction on lightweight devices with limited processing power, maintaining portability while providing adequate performance.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS20260032400A1Apparatus and method for binaural pose correction

Publication Date: 2026.01.29 FRAUNHOFER GESELLSCHAFT ZUR FORDERUNG DER ANGEWANDTEN FORSCHUNG EV

AI summary

An apparatus for processing two or more first binaural signals according to an embodiment is provided. The apparatus has an audio processor configured for conducting a weighted mixing of the two or more first binaural signals to obtain a combined binaural signal. The two or more first binaural signals are two or more binaural audio signals for different rotations of a same audio scene.