Rotating Display Direction Cues for Short-Duration Audio Events
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Solution Overview
Problem
Existing display apparatuses equipped with acoustic sensors cannot effectively generate a visual marker indicating the direction of an audio signal, such as a gunshot, when the display's orientation changes.
Innovation Solution
Incorporating an audio detector to identify the arrival direction of an audio signal, a display device to generate visual information, and a compass and inclination sensor to update the visual information based on the display's rotational position, ensuring the visual indicator aligns with the audio signal's direction despite changes in orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display apparatus rotates to change orientation, then the user can view the display from different directions, but the visual indicator no longer accurately indicates the arrival direction of the audio signal
Solution Approach 1:
The system continuously monitors the rotational position of the display apparatus via the compass and inclination sensor, and uses this feedback to dynamically update the visual indicator's position. This closed-loop feedback mechanism ensures that the visual indicator always accurately reflects the audio signal's arrival direction relative to the current display orientation, resolving the contradiction between rotation flexibility and directional accuracy.
Solution Approach 2:
The visual indicator is designed to be dynamic rather than static. It automatically adjusts its position on the display based on real-time rotational data from the sensors. This dynamic adaptation allows the display to maintain accurate directional indication while freely rotating, transforming the system from a fixed reference frame to a moving one that continuously compensates for orientation changes.
2Device complexity
If the visual indicator is fixed relative to the display, then the display structure is simple, but the indicator cannot track the audio signal direction when the display rotates
Solution Approach 1:
The display system is enhanced with multi-functionality by integrating compass and inclination sensor capabilities into the existing display apparatus. These additional components enable the system to perform both its original display function and the new function of tracking rotational position and updating the visual indicator accordingly, thereby maintaining reliability without requiring a completely separate system.
Solution Approach 2:
The compass and inclination sensors act as intermediary devices that bridge the physical rotation of the display and the virtual position of the visual indicator. These sensors mediate between the mechanical orientation changes and the software-based indicator updates, allowing the system to maintain accurate directional indication while keeping the overall structure relatively simple through the use of these intermediary measurement components.
3Measurement precision
If the display apparatus is kept stationary, then the visual indicator accurately shows the audio signal direction, but the user cannot adjust the viewing angle or orientation
Solution Approach 1:
The system transitions from a static to a dynamic reference frame. Instead of keeping the display stationary to maintain accuracy, the system dynamically adapts the visual indicator's position based on the display's current orientation. This allows the user to freely adjust the viewing angle while the system continuously recalculates and updates the indicator position to maintain accurate directional indication relative to the new orientation.
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
Enables the generation of a visual indicator that accurately shows the direction of an audio signal, like a gunshot, even as the display apparatus rotates, providing essential visual feedback for users like soldiers or police officers.
Implementation Method 1
an audio detector arranged to detect an arrival direction of an audio signal
Implementation Method 2
a compass and an inclination sensor arranged to generate a position signal indicating a change of a rotational position of a display surface of said display device
Data Source
AI summary
The invention relates a method and arrangement for presenting visual information responsive to an audio signal. A solution according to the invention comprises an audio detector (101) arranged to detect an arrival direction of the audio signal, a display device (103) arranged to generate visual information (108) indicating the arrival direction of the audio signal, and a position sensor (104) arranged to generate a position signal indicating a change of a rotational position of a display surface of the display device. The display device is arranged to update the visual information according to the position signal. The solution is able to generate a visual indicator that indicates a direction from which an audio signal having a limited temporal duration, e.g. a gunshot voice, has arrived with respect to a changing rotational position of the display surface.