Headset Directional Audio Channel Selection
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Solution Overview
Problem
In noisy environments such as air space surveillance and emergency call centers, existing communication systems face challenges in ensuring clear communication due to high noise levels, making it difficult for users to understand conversations.
Innovation Solution
A communication system equipped with a headset and directional information signaling device that detects and evaluates directional information to select appropriate output channels based on the user's head orientation, allowing targeted communication by directing audio signals towards specific individuals while reducing or muting channels not in use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If users communicate with a large number of people in noisy environments, then communication coverage is improved, but communication intelligibility deteriorates due to high noise exposure
Solution Approach 1:
The patent segments the omnidirectional audio communication into multiple directional channels. The audio signal is divided and assigned to different spatial sectors, allowing the system to selectively activate only the channels relevant to the user's current head orientation. This segmentation enables communication coverage across multiple directions while reducing noise exposure by muting irrelevant directional channels.
Solution Approach 2:
The patent implements dynamic channel selection based on real-time head orientation detection. The system continuously tracks the user's head position and dynamically adjusts which audio channels are active, transitioning between directional modes as the user turns their head. This dynamic adaptation allows the system to maintain clear communication intelligibility by always presenting audio from the most relevant direction while suppressing noise from other directions.
2Adaptability or versatility
If all communication channels are kept active for all users, then communication availability is improved, but noise exposure increases making communication harder to understand
Solution Approach 1:
The patent applies preliminary action by pre-assigning audio channels to specific directional sectors before communication begins. The system预先 configures the spatial mapping of communication channels to directional regions, so that when a user looks in a particular direction, the corresponding pre-assigned channel is automatically activated. This preliminary organization allows the system to quickly switch between channels based on head orientation without delay, maintaining communication availability while reducing noise exposure through selective channel activation.
3Reliability
If directional audio selection is implemented, then communication intelligibility is improved, but device complexity increases due to additional detection and control components
Solution Approach 1:
The patent applies universality by integrating multiple functions into the headset device. The headset combines audio transmission, head orientation detection, and automatic channel selection control into a single integrated unit. This multi-functionality reduces the need for separate external devices while maintaining improved communication intelligibility through directional audio selection, thereby limiting the increase in overall system complexity.
Data Source
AI summary
There is provided a communication system having at least one headset (100) for recording speech signals with a directional information signalling device (1) for detecting directional information. The communication system further has a communication unit (200) which has a direction evaluation unit (2) for evaluating the items of directional information produced by the directional information signalling device. The communication unit further has a channel selection unit (3) for receiving the recorded speech signals (c) and for selecting an output channel (OUT1-OUTi) in dependence on the items of directional information detected and evaluated by the direction evaluation unit (2).