Ear-Worn Audio Layout With Partitioned Paths for ANC Isolation
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Solution Overview
Problem
Existing wearable devices worn on the ear face challenges in minimizing sound interference between speakers and microphones, which affects ANC performance and speaker aperture ratio.
Innovation Solution
A partition wall structure is introduced between the speaker and microphone to minimize sound interference, maintaining a maximum aperture ratio for the speaker.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a partition wall structure is provided between the speaker and microphone, then sound interference is minimized, but the speaker aperture ratio is reduced
Solution Approach 1:
A partition wall is introduced as an intermediary structure between the speaker and microphone. This partition wall includes a first path that allows sound to pass from the speaker to the external environment, and a second path that is separated from the first space by the partition wall and connects the microphone to the first path. This mediator structure minimizes sound interference while maintaining speaker aperture ratio.
2Power
If the aperture ratio of the speaker is increased, then speaker output is improved, but sound interference with the microphone increases
Solution Approach 1:
The partition wall structure segments the internal space into separate regions. The first path connects the speaker to the external environment, while the second path is separated from the first space by the partition wall and connects the microphone to the first path. This segmentation allows the speaker to maintain a large aperture ratio for improved output while the partition wall prevents direct sound interference with the microphone.
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
This design reduces internal sound interference, improving ANC performance and speaker quality while maintaining output path integrity.
Implementation Method 1
a first path connecting a first space between the speaker and the partition wall and the speaker nozzle part from the speaker is provided, and a second path separated from the first space by the partition wall and connecting the microphone and the first path is provided
Data Source
AI summary
Wearable devices may include a housing including a first surface facing a first direction and having a speaker nozzle part, and a second surface facing a second direction opposite to the first direction and having at least one microphone hole. A speaker and a microphone are disposed in the housing, the microphone configured to collect an acoustic signal. A partition wall is positioned between the speaker and the microphone. A first space is defined between the speaker and the partition wall, a first path is provided for connecting the speaker and the speaker nozzle part, and a second path, separated from the first space by the partition wall, connects the microphone and the first path.