Adaptive Noise Control Using Listener Location and Acoustic Response
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Solution Overview
Problem
Existing noise control processing systems struggle to adapt to dynamic changes in acoustic environments, such as sudden loud noises or quiet periods, leading to suboptimal audio experiences and potential listener discomfort.
Innovation Solution
A system that determines the location and acoustic response of a listener within an environment, providing control signals to adjust noise control processing parameters based on the listener's location and real-time or anticipated changes in acoustic characteristics, using a server or rendering device to optimize audio playback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If noise control processing uses fixed parameters, then device complexity is reduced, but adaptability to different acoustic environments deteriorates
Solution Approach 1:
The patent implements dynamic adjustment of noise control parameters based on detected acoustic environment characteristics. The system continuously monitors the acoustic response and modifies processing parameters in real-time, transitioning from static fixed parameters to dynamic adaptive parameters that respond to environmental changes.
Solution Approach 2:
The system employs feedback mechanisms by detecting the acoustic response at the listener's location and using this information to adjust noise control parameters. The detected acoustic characteristics feed back into the processing system, creating a closed-loop control that optimizes performance for different environments.
2Reliability
If noise control processing adapts to acoustic response, then audio quality is improved, but device complexity increases
Solution Approach 1:
The system performs preliminary detection of acoustic environment characteristics before applying noise control processing adjustments. By characterizing the acoustic response in advance, the system can pre-calculate appropriate parameter adjustments, reducing the complexity of real-time processing while maintaining audio quality.
Solution Approach 2:
The patent adjusts specific processing parameters such as gain, frequency response, and filter characteristics based on detected acoustic conditions. By modifying individual parameters rather than the entire processing chain, the system improves audio quality while limiting the increase in overall system complexity.
3Adaptability or versatility
If noise control parameters are adjusted frequently, then adaptability to environmental changes is improved, but loss of time for processing increases
Solution Approach 1:
The system implements periodic detection and adjustment of noise control parameters rather than continuous adjustment. By sampling the acoustic environment at optimized intervals and adjusting parameters periodically, the system maintains adaptability to environmental changes while reducing processing time and computational overhead.
Solution Approach 2:
The system detects acoustic environment changes and applies parameter adjustments in advance before the changes significantly impact audio quality. By anticipating environmental variations and pre-adjusting parameters, the system reduces the need for frequent corrective adjustments, thereby minimizing processing time while maintaining adaptability.
Data Source
AI summary
Examples of the disclosure relate to enabling external control of noise control processing. In examples of the disclosure a location of a listener is determined. The listener is listening to audio content and the audio content is processed using noise control processing. An acoustic response at the location of the listener is determined and a control signal is provided. The control signal indicates an adjustment for one or more parameters of the noise control processing, and the adjustment is based, at least in part, on the acoustic response at the location of the listener.