Ear-worn Audio Guidance System Head Direction Detection
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Solution Overview
Problem
Current hearable devices experience audio lag when providing navigation, leading to decreased navigation accuracy due to the time lag in data processing and transmission between the device and the information processing terminal.
Innovation Solution
An audio information providing system that includes an audio output device worn on the ear and an information processing terminal connected via short-range radio communication, where the terminal detects the user's head direction and predicts changes in direction to generate audio guidance based on the user's position and head movement, reducing audio lag by using learning data and external audio data selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If information is transmitted through the information processing terminal for processing, then audio data can be generated and output, but audio lag occurs due to the series of processes
Solution Approach 1:
The audio output device performs preliminary actions by detecting head direction and generating audio guidance locally without waiting for the information processing terminal to process and transmit data. The detection unit continuously monitors head direction, and the audio generation unit pre-generates audio guidance based on detected direction changes, eliminating the time lag caused by sequential processing and transmission.
2Measurement precision
If navigation audio guidance is provided based on detected head direction, then navigation accuracy improves, but audio lag decreases navigation accuracy
Solution Approach 1:
The system performs preliminary detection of head direction and pre-generation of audio guidance before the audio lag can affect navigation accuracy. The detection unit continuously tracks head direction, and the audio generation unit proactively generates guidance audio based on detected direction changes, ensuring that audio output remains synchronized with user orientation without waiting for terminal processing.
Solution Approach 2:
The system establishes a feedback loop where the detection unit continuously monitors head direction and feeds this information back to the audio generation unit, which adjusts audio guidance in real-time. This closed-loop feedback mechanism ensures that audio guidance continuously adapts to user orientation, maintaining navigation accuracy despite any potential audio lag.
Data Source
AI summary
There is provided an audio information providing system that can solve the problem with the audio lag and includes navigation with higher accuracy. The audio information providing system is an audio guidance system including an audio output device that is worn in the ear of a user and an information processing terminal that is communicatively connected to the audio output device. The audio output device includes: an audio output unit configured to output audio to the ear of the user; and a detection unit configured to detect the direction of the head of the user. The information processing terminal includes: a position information acquiring unit configured to acquire a current position of the user; and a generation unit configured to generate audio data which is used for the audio output unit to output audio guidance for a route to a destination to which the user moves from a direction of the destination relative to the direction of the head of the user on the basis of a relationship among position information of the destination, the current position of the user, and information on the direction of the head of the user.