Programmable Headset Microphone Modes for Beam Pattern Switching
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Solution Overview
Problem
Conventional audio headsets lack adaptive noise filtering capabilities, leading to suboptimal sound quality in varying ambient noise levels, particularly in gaming environments where background noise interferes with desired audio sources.
Innovation Solution
A headset with programmable microphone modes that utilizes a beamforming microphone to adjust its beam pattern based on ambient noise levels, switching between wide and narrow patterns to optimize sound reception and noise reduction, either manually or automatically.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a conventional omnidirectional microphone is used, then the headset can capture sound from all directions, but it cannot effectively filter out background noise in noisy environments
Solution Approach 1:
The microphone system dynamically adjusts its beam pattern between wide and narrow configurations based on detected ambient noise levels. In quiet environments, a wide beam pattern captures sound from all directions. In noisy environments, the system switches to a narrow beam pattern that selectively captures sound from the user's direction while filtering out background noise from other directions.
Solution Approach 2:
The system changes the spatial reception parameter of the microphone by switching between different beam patterns. The beam pattern configuration is adjusted as a controllable parameter based on the noise environment, transforming the microphone's directional characteristics to optimize signal-to-noise ratio in different conditions.
2Object-affected harmful factors
If a narrow beam pattern is used to filter noise, then background noise is reduced, but the microphone loses sensitivity to sounds from other directions
Solution Approach 1:
The beam pattern is dynamically adjusted based on the acoustic environment. When ambient noise levels are low, the system switches to a wide beam pattern that maintains high sensitivity to sounds from all directions. When noise levels increase, the system transitions to a narrow beam pattern that prioritizes noise filtering while still capturing the user's voice effectively.
3Ease of operation
If manual mode selection is provided, then user control over microphone behavior is improved, but the system requires user intervention to adapt to changing noise levels
Solution Approach 1:
The system continuously monitors ambient noise levels and automatically adjusts the beam pattern based on this feedback. The noise detection circuitry provides real-time information about the acoustic environment, and the control system uses this feedback to automatically switch between wide and narrow beam patterns without requiring user intervention, while still allowing manual override when desired.
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
Improves sound quality by effectively filtering out background noise in noisy environments while maintaining sensitivity in quiet conditions, enhancing the gaming experience by isolating the user's voice from other audio sources.
Implementation Method 1
configuring a beam pattern of the beamforming microphone based on at least the sensed ambient noise level
Data Source
AI summary
A method and system for a headset with programmable modes, where the headset comprises a beamforming microphone: sensing an ambient sound level near the headset, and configuring the headset in one of a plurality of modes by configuring a beam pattern of the beamforming microphone based on at least the sensed ambient noise level. A user of the headset may configure the headset in the one of the plurality of modes or it may be automatically configured. The beamforming microphone may comprise an array of sound sensing elements. The headset may be configured in a quiet mode when the sensed ambient sound level is below that of a desired sound source and may be configured with a wide beam pattern. The headset may be configured in a loud mode when the sensed ambient sound level is above that of a desired sound source.