3D Sound Adaptation via Dynamic Acoustic Radiation Steering
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Solution Overview
Problem
Achieving high audio quality in environments is challenging due to sub-optimal placement of speakers and listeners, leading to degraded acoustic quality and user satisfaction.
Innovation Solution
An electronic device that dynamically adapts the acoustic radiation pattern of speakers by determining the listener's location and calculating an acoustic radiation pattern with a principal direction, using sensors and machine learning to steer sound and reduce distortion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If speakers are placed in sub-optimal positions or listeners are not located at ideal positions, then the ease of operation and adaptability improve, but the acoustic quality and sound distortion deteriorate
Solution Approach 1:
The system dynamically adjusts the acoustic radiation pattern based on the determined listener location. The principal direction of the acoustic radiation pattern is calculated to point toward the listener, and this pattern is updated in real-time as the listener moves, allowing the system to maintain optimal acoustic quality regardless of position
Solution Approach 2:
The system changes the parameters of the acoustic radiation pattern (specifically the principal direction) based on the listener's location. By modifying the directional characteristics of the sound radiation, the system compensates for sub-optimal positioning and reduces sound distortion
2Adaptability or versatility
If speakers are placed in sub-optimal positions or listeners are not located at ideal positions, then the ease of operation and adaptability improve, but the acoustic quality deteriorates
Solution Approach 1:
The system uses sensors to detect the listener's location and feeds this information back to the processor, which then calculates and adjusts the acoustic radiation pattern accordingly. This closed-loop feedback mechanism ensures that the acoustic quality is maintained by continuously adapting to the listener's position
Solution Approach 2:
The acoustic radiation pattern is dynamically adjusted based on real-time listener position data. The system transitions from a static speaker configuration to a dynamic system that continuously adapts its sound radiation characteristics to maintain reliable acoustic quality
3Object-affected harmful factors
If the acoustic radiation pattern is dynamically adjusted based on listener location, then the acoustic quality and sound distortion improve, but the device complexity increases
Solution Approach 1:
The system replaces complex mechanical positioning and manual calibration with electronic sensors and computational algorithms. The sensor-based location detection and software-based acoustic radiation pattern calculation substitute for mechanical adjustments, reducing physical complexity while improving acoustic performance
Data Source
AI summary
An electronic device that provides closed-loop adaptation of 3D sound or a sound field is described. Based at least in part on information about an environment, the electronic device may determine a location of at least an individual relative to location of the second electronic device. Then, based at least in part on the determined location and a predefined acoustic response of the second electronic device, the electronic device may calculate an acoustic radiation pattern of the second electronic device. This acoustic radiation pattern may have a beam with a principal direction corresponding to the determined location, and the acoustic radiation pattern may, at least in part, limit sound distortion of the second electronic device when the second electronic device outputs audio content using the acoustic radiation pattern. Next, the electronic device may provide the audio content and second information specifying the acoustic radiation pattern for the second electronic device.