Headphone Acoustic Tuning via Segmented Air Chambers
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Solution Overview
Problem
Conventional methods for adjusting acoustic characteristics of headphones by changing the diameter and length of ports are labor-intensive and difficult to finely tune.
Innovation Solution
A headphone design featuring a series configuration of acoustic resistance materials and openings in separate housings, allowing for fine adjustments of acoustic characteristics by varying the number and size of openings and acoustic mass, enabling precise tuning of acoustic properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the diameter and length of the port are changed to adjust acoustic characteristics, then the acoustic characteristics can be adjusted, but it requires many man-hours and fine adjustment is difficult
Solution Approach 1:
The port is divided into two separate components: a first opening formed in the first housing and a second opening formed in the acoustic resistance material. These segments can be independently adjusted by changing the number of openings or their sizes, enabling fine-tuned acoustic characteristics adjustment without time-consuming manual modifications to a single integrated port structure
Solution Approach 2:
The patent introduces adjustable and replaceable components including multiple first openings that can be selectively opened or closed, and multiple acoustic resistance materials with different properties that can be exchanged. This dynamic configuration allows rapid adjustment of acoustic characteristics without requiring manual modification of port dimensions, significantly reducing adjustment time while achieving precise acoustic tuning
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
Facilitates easier and more precise adjustments of acoustic characteristics, resulting in headphones with reduced individual variability and improved acoustic performance.
Implementation Method 1
a second opening formed in the acoustic resistance material, wherein the second opening is formed in series with the first opening
Implementation Method 2
the first opening and the first acoustic resistance material may be acoustically connected in series
Data Source
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AI summary
The present invention relates to a headphone having configurations suitable for fine adjustments of acoustic characteristics. The headphone includes a driver unit (2), the first housing (4) that forms a first air chamber (11) on a back side of the driver unit (2), the second housing (5) that forms a second air chamber (12) on an opposite side of an inner surface different from an inner surface where the driver unit (2) is provided in the first housing (4), and a damper (61) provided in the second housing (5). In the first housing (4), an opening (44) that communicates between the first air chamber (11) and the second air chamber (12) is formed.