Lid-Mounted Speaker Audio Reproduction with State Detection
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Solution Overview
Problem
Existing audio reproduction devices with multiple speakers integrated into a case struggle to maintain good audio reproduction quality when the lid is closed, as the speaker is not effectively utilized in this state, and existing sound control devices do not adapt reproduction characteristics to speaker position changes.
Innovation Solution
An audio reproduction device with first and second lid-shaped speaker supports on a case, a sensor to detect open and closed states, and a reproduction characteristic control unit that adjusts the speakers' settings based on the sensor's input to optimize audio reproduction in both states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the lid is closed to protect the speaker, then the speaker is dustproof and compact, but the speaker cannot be effectively utilized for audio reproduction
Solution Approach 1:
The lid is designed to be movable between a closed state (for dust protection) and an opened state (for audio reproduction). The hinge mechanism enables dynamic transition between these states, allowing the same structure to serve both protective and functional purposes. When opened, the lid positions the speaker at an optimal angle for sound radiation while maintaining protection when closed.
Solution Approach 2:
The system changes the spatial parameters of the speaker by adjusting the lid angle. When the lid is opened to a specific angle, the speaker's position relative to the case changes, enabling effective audio reproduction. The control unit adjusts reproduction characteristics based on this positional parameter change, optimizing sound output for the opened state while maintaining dust protection in the closed state.
2Productivity
If the speaker is attached on the lid to enable audio reproduction in opened state, then audio reproduction quality improves, but the structure becomes more complex
Solution Approach 1:
The lid serves multiple functions: it acts as a protective cover for dust protection, a structural support for the speaker attachment, and a positioning mechanism for optimal sound radiation. By integrating the speaker attachment directly into the lid structure, the design eliminates the need for separate mounting mechanisms, reducing overall structural complexity while enabling audio reproduction in the opened state.
3Object-affected harmful factors
If the lid is completely closed to protect the speaker, then dust protection is maximized, but good audio reproduction cannot be performed
Solution Approach 1:
The lid is designed to be movable between a closed state (for dust protection) and an opened state (for audio reproduction). The hinge mechanism enables dynamic transition between these states, allowing the same structure to serve both protective and functional purposes. When opened, the lid positions the speaker at an optimal angle for sound radiation while maintaining protection when closed.
Data Source
AI summary
Provided is an audio reproduction device that includes first and second speaker supports that have a lid shape and are provided on a case in an openable and closable manner, a sensor that detects a first state and a second state, the first and second speaker supports being closed in the first state, the first and second speaker supports being opened and held almost horizontally in the second state, first and second speakers respectively attached on front surfaces of the first and second speaker supports such that a distance in the second state is larger than a distance in the first state, and a reproduction characteristic control unit that switches reproduction characteristics of the first and second speakers in the first state and the second state on the basis of a detection signal from the sensor.