Head-Mounted Audio Control Using User State Recognition
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Solution Overview
Problem
Users of head-mounted audio devices face the need for complex operations to activate or deactivate noise reduction and ambient functions as their state or situation changes, requiring frequent adjustments and removal of the device.
Innovation Solution
An information processing device that recognizes a user's state through detection results and controls audio output using a function map, allowing for seamless switching between noise reduction and ambient functions without manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual control of noise reduction and ambient functions is implemented, then users can precisely adjust audio settings according to their needs, but the operation complexity increases and user convenience decreases
Solution Approach 1:
The system automatically detects user state through sensors (accelerometer, gyroscope, microphone) and autonomously selects appropriate audio output modes without requiring manual user input. The control unit processes detection results and switches between noise reduction and ambient functions based on recognized user states such as walking, running, or stationary conditions.
Solution Approach 2:
The system continuously monitors user state through sensor feedback and dynamically adjusts audio output settings in real-time. The control unit receives ongoing detection results from sensors and modifies the audio output mode accordingly, creating a closed-loop system that adapts to changing user conditions.
2Ease of operation
If automatic state recognition is implemented, then operation complexity is reduced and user convenience is improved, but the device complexity and processing requirements increase
Solution Approach 1:
The control unit serves multiple functions: it manages audio output, processes sensor data from various sources (accelerometer, gyroscope, microphone), recognizes user states, and switches between different audio modes. This multi-functional approach consolidates complexity into a single component rather than requiring separate dedicated systems for each function.
Solution Approach 2:
The system combines multiple sensor inputs (acceleration, rotation, audio) into a unified user state recognition process. The control unit integrates data from different sensor types and combines them to make comprehensive decisions about audio output mode, rather than treating each sensor independently.
3Measurement precision
If multiple sensors are used for state recognition, then recognition accuracy is improved, but the device complexity and cost increase
Solution Approach 1:
The system employs asymmetric sensor utilization where different sensors serve different primary purposes: the accelerometer and gyroscope primarily detect motion patterns for state recognition, while the microphone provides supplementary audio information. This asymmetric allocation optimizes the contribution of each sensor type based on its strengths.
Solution Approach 2:
The system uses a set of sensors that provides sufficient information for accurate state recognition without being overly excessive. The combination of acceleration, rotation, and audio sensors creates adequate redundancy for reliable recognition while avoiding unnecessary additional sensors that would increase complexity without proportional benefits.
Data Source
AI summary
To enable listening to audio in a more suitable mode without any complicated operation even in a situation in which the user's state or situation successively changes. An information processing device including: a recognition processing unit that recognizes a user's state in accordance with a detection result of a predetermined state or situation; and an output control unit that controls audio output from a predetermined output unit on the basis of a function map, which is selected in accordance with a predetermined condition, in which a setting related to control of the audio output is associated with each of a plurality of candidates for the user's state, and the recognized user's state.