Adaptive Audio Equalization for Ambient Noise and Leakage Control
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Solution Overview
Problem
Existing AR and VR headsets provide inconsistent audio output due to variations in users' anatomical features and environmental noise levels, leading to a need for personalized audio adjustments to enhance user experience.
Innovation Solution
An audio playback device equipped with an acoustic sensor to detect ambient noise, which updates an equalization filter and leakage control parameter to adjust acoustic parameters and leakage of audio content, ensuring a consistent audio experience across different environments and user anatomies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If constant audio output is provided, then device complexity is reduced, but audio quality consistency deteriorates due to ambient noise variations and anatomical differences
Solution Approach 1:
The patent implements dynamic audio output adjustment by continuously monitoring ambient noise levels through acoustic sensors and adapting the audio signal in real-time. The system transitions from static constant output to dynamic adaptive output, modifying audio characteristics based on detected environmental conditions and user anatomical variations, thereby maintaining audio quality consistency without excessive complexity
Solution Approach 2:
The system employs feedback mechanisms where acoustic sensors detect ambient noise and the system responds by adjusting audio output parameters. This closed-loop control allows the device to automatically compensate for environmental variations and anatomical differences, improving audio consistency while keeping the adjustment process automated rather than manually complex
2Reliability
If personalized audio adjustments are implemented, then audio quality consistency improves, but device complexity increases due to additional sensors and processing
Solution Approach 1:
The system performs self-calibration and self-adjustment by automatically detecting user anatomical features and ambient conditions, then configuring appropriate audio parameters without manual intervention. This self-service approach enables personalized audio output while minimizing the complexity of system configuration from the user perspective
Solution Approach 2:
The patent modifies audio output parameters dynamically based on detected conditions, including frequency response adjustments, volume levels, and spatial audio characteristics. By changing these parameters adaptively rather than requiring complex fixed configurations, the system achieves personalized audio quality with manageable system complexity
3Adaptability or versatility
If real-time audio adjustment is performed, then adaptability to environments improves, but processing speed requirements increase
Solution Approach 1:
The system performs preliminary characterization of the audio environment and user anatomy during initial use or calibration phases, storing this information for rapid retrieval during actual audio playback. This preliminary action reduces the processing burden during real-time operation, enabling environmental adaptability without excessive processing speed requirements during content delivery
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides personalized and high-quality audio output by adjusting audio content in real-time based on ambient noise and user-specific settings, maintaining sound quality across varying environments and anatomical differences.
Implementation Method 1
detecting, via an acoustic sensor of an audio playback device, ambient noise surrounding the audio playback device
Data Source
AI summary
An audio playback device detects via an acoustic sensor of an audio playback device, ambient noise surrounding the audio playback device. The audio playback device updates an equalization filter based on the detected ambient noise, wherein the equalization filter adjusts one or more acoustic parameters of content presented by the audio playback device. The audio playback device adjusts a leakage control parameter based on the detected ambient noise, wherein the leakage control parameter adjusts an amount of leakage of content presented by the audio playback device. The audio playback device applies the equalization filter and the adjusted leakage control parameter to audio content. The audio playback device provides, via one or more acoustic speakers, the audio content to a user.