Headphone Core Module With Helmholtz Cavity for Resonance Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing headphones often suffer from inefficiencies in sound transmission and resonance, leading to suboptimal audio quality and comfort issues due to inadequate design of the vibration panel and transducer assembly.
Innovation Solution
The headphone design incorporates a core module with a supporting assembly and a vibration panel connected to a transducer device, featuring specific geometric and material properties to enhance sound transmission and resonance, including a Helmholtz resonance cavity to attenuate resonant peaks and improve frequency response.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the vibration panel area is increased to improve sound transmission, then sound quality is improved, but resonance interference increases
Solution Approach 1:
The patent introduces a Helmholtz resonance cavity that communicates with the accommodating cavity through a communication hole. This cavity converts the harmful resonance interference into a beneficial acoustic effect by creating a controlled Helmholtz resonance that enhances bass response and attenuates unwanted resonant peaks in the frequency response curve, thereby improving overall sound quality while managing resonance effects.
Solution Approach 2:
The patent employs an air-conduction mechanism as an intermediary between the transducer device and the user's ear. The vibration panel transmits mechanical vibrations to the air in the accommodating cavity, which then conducts these vibrations to the user's ear through the communication hole. This air-conduction intermediary helps to smooth out resonance interference while maintaining effective sound transmission.
2Productivity
If the transducer device is suspended closer to the vibration panel to enhance coupling, then sound transmission efficiency is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent divides the coupling mechanism into distinct segments: the transducer device is suspended within the accommodating cavity through a first vibration plate, while the vibration panel is positioned separately and connected to the transducer device through a connecting member that passes through a mounting hole. This segmentation allows for independent positioning and adjustment of each component, reducing the overall manufacturing precision requirements while maintaining effective coupling for sound transmission.
Solution Approach 2:
The patent introduces a connecting member as an intermediary element between the vibration panel and the transducer device. This connecting member, which passes through a mounting hole in the core housing, provides a flexible coupling mechanism that accommodates manufacturing tolerances while ensuring effective mechanical coupling for efficient sound transmission from the transducer to the vibration panel.
3Reliability
If the mounting hole area is reduced to minimize air leakage, then acoustic sealing is improved, but sound transmission efficiency decreases
Solution Approach 1:
The patent converts the potential harm of air leakage through the mounting hole into a beneficial effect by designing the communication hole to serve as a controlled acoustic passage. The Helmholtz resonance cavity uses this opening to create a tuned acoustic resonance that enhances low-frequency response. By carefully designing the dimensions of the communication hole and the volume of the Helmholtz cavity, the system achieves both acoustic sealing and efficient sound transmission, while the resonance effect actually improves bass performance.
4Stability of the object's composition
If the first vibration plate is added to suspend the transducer device, then structural stability is improved, but device complexity increases
Solution Approach 1:
The patent employs a first vibration plate as a flexible thin film structure to suspend the transducer device within the accommodating cavity. This vibration plate provides the necessary structural support and stability while maintaining acoustic transparency, allowing sound waves to pass through effectively. The flexible nature of this thin film structure enables easy assembly and adjustment, offsetting the increased complexity with manufacturing advantages.
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
The design achieves improved sound quality and comfort by optimizing sound transmission through the air-conduction mechanism, reducing resonance interference, and enhancing the frequency response curve to provide a more balanced audio experience.
Implementation Method 1
the transducer device may be provided in a accommodating cavity of the core housing, and the vibration panel may be connected with the transducer device and may be configured to transmit a mechanical vibration generated by the transducer device to a user
Implementation Method 2
The headphone design incorporates a core module with a supporting assembly and a vibration panel connected to a transducer device, featuring specific geometric and material properties to enhance sound transmission and resonance, including a Helmholtz resonance cavity to attenuate resonant peaks and improve frequency response
Data Source
AI summary
The present disclosure mainly relates to a headphone. The headphone may include a supporting assembly and a core module connected with the supporting assembly. The supporting assembly may be configured to support the core module to be worn at a wearing position. The core module may include a core housing, a transducer device, and a vibration panel. The transducer device may be provided in a accommodating cavity of the core housing, and the vibration panel may be connected with the transducer device and configured to transmit a mechanical vibration generated by the transducer device to a user.