Acoustic Device Separation Structure Low-Frequency Resonance
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Solution Overview
Problem
Conventional acoustic devices, such as earphones, face challenges in providing sufficient low-frequency resonance due to their constrained volume, leading to inadequate acoustic performance.
Innovation Solution
The implementation of a separation structure within the chamber of an acoustic device, which divides it into two sub-chambers and includes strategically positioned through holes, enhances low-frequency resonance without increasing the device's volume, thereby reducing acoustic distortion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the volume of the acoustic device is increased to improve low-frequency resonance, then the acoustic performance is improved, but the device size becomes larger
Solution Approach 1:
The patent divides the acoustic chamber into multiple sub-chambers using a separation structure with through holes. This segmentation creates independent acoustic spaces that can resonate at different frequencies, effectively improving low-frequency response without increasing the overall device volume. The separation structure with controlled through holes allows acoustic coupling between sub-chambers while maintaining distinct resonance characteristics.
2Reliability
If a separation structure is added to improve low-frequency resonance, then the acoustic performance is improved, but the device complexity increases
Solution Approach 1:
The separation structure serves multiple functions simultaneously: it divides the chamber into sub-chambers for enhanced low-frequency resonance, provides structural support within the acoustic cavity, and controls acoustic coupling through its through holes. This multi-functionality allows the single component to address several design requirements without proportionally increasing device complexity.
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 configuration improves low-frequency resonance and reduces sound distortion by optimizing the air flow and pressure balance within the device, enhancing the overall acoustic performance.
Implementation Method 1
low-frequency resonance plays an important role... This configuration improves low-frequency resonance
Implementation Method 2
The vibration structure is disposed at the second end of the first chamber and is configured to transmit an acoustic wave away from the first chamber
Data Source
AI summary
An acoustic device includes a first chamber, a first through hole, a vibration structure, and a separation structure. The first chamber includes a first end and a second end. The first through hole is defined at the first end of the first chamber. The vibration structure is disposed at the second end of the first chamber and is configured to transmit an acoustic wave away from the first chamber. The separation structure is disposed within the first chamber and divides the first chamber into a first sub-chamber and a second sub-chamber. The separation structure defines a second through hole connecting the first sub-chamber and the second sub-chamber.