Bone-Conduction Headphone Housing for Low-Leakage Audio
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electronic devices, such as headphones, face challenges in providing both comfort and good acoustic performance, particularly in terms of sound quality and reducing sound leakage.
Innovation Solution
An acoustic output apparatus incorporating a bone-conduction acoustic assembly and an air-conduction acoustic assembly within a housing, where the housing contacts the user's skin to transmit bone-conduction sound waves, and the air-conduction sound waves are generated through vibrations of the housing or bone-conduction assembly, with specific design parameters to enhance sound quality and reduce leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional air-conduction headphones are used, then sound quality can be maintained, but sound leakage occurs and comfort is reduced
Solution Approach 1:
The patent divides the sound transmission function into two separate pathways: bone-conduction assembly for one pathway and air-conduction assembly for another pathway. This segmentation allows each assembly to be optimized independently, with the bone-conduction assembly preventing sound leakage and the air-conduction assembly maintaining sound quality.
Solution Approach 2:
The headphones incorporate both bone-conduction and air-conduction assemblies within a single device, making it multi-functional. The bone-conduction assembly addresses sound leakage and comfort issues while the air-conduction assembly maintains acoustic performance, and both can work together or independently.
2Reliability
If bone-conduction assembly is added to improve sound quality and reduce leakage, then acoustic performance improves, but device complexity increases
Solution Approach 1:
The patent merges the bone-conduction assembly and air-conduction assembly into a single integrated headphone device with a shared housing and control system. This combining approach allows both functions to coexist while sharing common components like the housing, control circuitry, and power management, thereby limiting the increase in complexity.
Solution Approach 2:
The control circuit is designed to universally control both the bone-conduction assembly and air-conduction assembly, allowing a single control system to manage multiple functions. This universal control approach reduces the need for separate control circuits for each assembly.
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 apparatus improves sound quality, especially at low frequencies, and reduces sound leakage, enhancing the overall audio experience by utilizing both bone-conduction and air-conduction sound waves.
Implementation Method 1
a voice coil connected to the vibration plate, wherein the voice coil may vibrate in the magnetic field in response to a sound signal, and drive the vibration plate to vibrate to generate the bone-conduction sound waves
Implementation Method 2
at least a portion of the housing may be in contact with a user's skin to transmit the bone-conduction sound waves under an action of the bone-conduction acoustic assembly
Implementation Method 3
the air-conduction sound waves may be generated based on vibrations of at least one of the housing or the bone-conduction acoustic assembly when the bone-conduction sound waves are generated
Data Source
AI summary
The present disclosure provides an acoustic output apparatus. The acoustic output apparatus may include a bone-conduction acoustic assembly, an air-conduction acoustic assembly, and a housing. The bone-conduction acoustic assembly may be configured to generate bone-conduction sound waves. The air-conduction acoustic assembly may be configured to generate air-conduction sound waves. The housing may include an accommodating chamber configured to accommodate the bone-conduction acoustic assembly and the air-conduction acoustic assembly. At least a portion of the housing may be in contact with a user's skin to transmit the bone-conduction sound waves under an action of the bone-conduction acoustic assembly. The air-conduction sound waves may be generated based on vibrations of at least one of the housing or the bone-conduction acoustic assembly when the bone-conduction sound waves are generated.