Dynamic Beamforming for Sound Source Position Tracking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional microphones with beamforming technology can only provide a single sound receiving direction, requiring users to manually adjust the target sound source, which is inconvenient and limits the effectiveness in reducing external noise and improving sound quality.
Innovation Solution
A sound processing apparatus and method that automatically adjusts the optimal sound receiving direction by determining the sound source position and applying weights to multiple sound signals using a beamforming algorithm, such as the differential microphone array (DMA) algorithm, to combine sound signals from multiple microphones and reduce external noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single sound receiving direction is used in beamforming, then the sound quality in that direction is improved, but the adaptability to different sound source positions deteriorates
Solution Approach 1:
The patent implements dynamic beamforming by continuously adjusting the beam pattern's orientation and shape based on real-time sound source position detection. The system transitions from a fixed single-direction beam to a dynamically adaptable beam that automatically tracks and optimizes for the current sound source location, resolving the contradiction between optimized sound quality and adaptability.
Solution Approach 2:
The system changes key parameters of the beam pattern including orientation angle, beam width, and focal position based on detected sound source characteristics. By dynamically modifying these parameters, the system maintains high sound quality while adapting to various sound source positions and environments.
2Adaptability or versatility
If multiple sound receiving directions are provided, then the adaptability is improved, but the device complexity increases
Solution Approach 1:
The patent creates a universal beamforming system where a single adjustable beam pattern can serve multiple directions and functions. Instead of requiring separate receiving mechanisms for different directions, one adaptive beam structure performs all directional functions by dynamically reconfiguring its parameters, reducing device complexity while maintaining multi-directional coverage.
Solution Approach 2:
The system uses dynamic parameter adjustment to achieve multi-directional coverage without physical switching mechanisms. The beam pattern continuously adapts its orientation and shape through electronic control, providing versatile directional coverage while keeping the hardware structure simple and unified.
3Reliability
If manual adjustment of sound source position is required, then the beamforming effectiveness is maintained, but the ease of operation deteriorates
Solution Approach 1:
The system implements self-service operation by automatically detecting sound source positions and autonomously adjusting the beam pattern accordingly. The beamforming system serves itself by eliminating the need for manual user intervention in positioning or configuration, maintaining reliable beamforming effectiveness while dramatically improving ease of operation.
Solution Approach 2:
The system uses feedback from sound source position detection to automatically control beam pattern adjustment. The detected position information feeds back to the beamforming controller, which automatically reconfigures the beam to optimize sound quality, removing the need for manual adjustment while maintaining effectiveness.
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
This approach allows for clearer sound capture and reduced external noise, enabling dynamic adjustment of sound receiving directions to optimize sound quality without manual user intervention, covering a wider range of sound sources and improving overall sound quality.
Implementation Method 1
A sound source position of a sound source relative to the sound reception sources is determined
Implementation Method 2
The sound within a beam pattern formed based on a beamforming algorithm can be clearly recorded, while the sound outside the beam pattern is greatly attenuated
Implementation Method 3
The first sound signals in the corresponding sound reception combinations are processed using the DMA algorithm
Data Source
AI summary
A sound processing apparatus and a sound processing method thereof are provided. The following steps are included. Multiple first sound signals corresponding to multiple sound reception sources are obtained. A sound source position of a sound source relative to the sound reception sources is determined. A relationship among multiple sound receiving directions corresponding to the sound reception sources is determined according to the sound source position. The sound receiving directions relate to directionality of the sound reception sources. A second sound signal is outputted from the first sound signals based on the relationship among the sound receiving directions. Accordingly, an optimal sound receiving direction corresponding to the sound source can be adjusted automatically, so as to improve sound quality.