Hybrid Ring-Radiator Headphone Driver for Low-Distortion Sound
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Solution Overview
Problem
Conventional headphone drivers suffer from non-linear distortion and diaphragm break-up due to inefficiencies in radiating area utilization and diaphragm excursion, leading to response issues and harsh sounds.
Innovation Solution
A hybrid ring-radiator design is implemented, combining a center driver with a ring radiator, utilizing multiple voice coils and diaphragms to increase radiating area and reduce non-linear distortion, with optimized Theile/Small parameters and venting configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If conventional headphone driver design is used, then device complexity is low, but non-linear distortion and diaphragm break-up occur leading to harsh sounds
Solution Approach 1:
The driver is divided into multiple independent radiating sections: a center driver and multiple ring radiators positioned at different radial distances. Each section has its own voice coil and diaphragm portion, allowing independent control and optimization. This segmentation prevents diaphragm break-up by distributing the radiating function across multiple zones that move synchronously, thereby reducing non-linear distortion while managing complexity through modular design.
Solution Approach 2:
The patent transitions from a single conventional driver to a three-dimensional hybrid configuration combining center and ring radiator elements at different radial positions. This dimensional expansion increases the effective radiating area without proportionally increasing the overall driver footprint, improving sound quality while controlling device complexity through spatial optimization.
2Object-generated harmful factors
If radiating area is increased to improve sound levels, then sound quality improves, but diaphragm break-up modes increase
Solution Approach 1:
The radiating area is segmented into multiple independent zones (center and ring sections) that can move synchronously. This segmentation allows the system to achieve large effective radiating area without increasing the complexity of individual diaphragm sections, thereby avoiding break-up modes while improving sound quality through increased radiating surface.
Solution Approach 2:
Multiple radiating sections (center driver and ring radiators) are merged into a single hybrid driver system that operates as a coordinated unit. The sections are magnetically coupled through the voice coil structure, ensuring synchronous movement. This merging achieves the benefits of large radiating area while distributing the mechanical stress across multiple sections, preventing break-up.
3Ease of operation
If conventional single driver design is used, then device complexity is low, but response issues and harsh sounds occur
Solution Approach 1:
The driver structure is segmented into multiple voice coil sections (center and ring) that can be independently optimized for different frequency responses. This segmentation enables improved overall response by allowing each section to be tuned for its optimal performance range while maintaining synchronous operation, thereby enhancing ease of operation despite increased structural complexity.
Solution Approach 2:
The hybrid driver design provides multi-functionality by combining center and ring radiator capabilities in a single device. The center driver handles lower frequencies while ring radiators contribute to higher frequencies, creating a universal driver system that covers a broader frequency spectrum. This multi-functional design improves response characteristics while the modular structure manages complexity through functional distribution.
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 hybrid design enhances sound levels while maintaining low distortion, reduces break-up modes, and improves sound quality by synchronizing diaphragm movement and air displacement.
Implementation Method 1
a voice coil, which generates a magnetic field when an audio signal is applied thereto, and a permanent magnet, which is positioned within a gap of the voice coil and disposed at a respective radial position relative to the center driver
Implementation Method 2
a center driver diaphragm and a ring radiator diaphragm portion, which is disposed at an outer periphery of the center driver diaphragm, with the ring radiator diaphragm portion moving synchronously with the center driver diaphragm
Data Source
AI summary
A system and method for a hybrid ring-radiator headphone driver, substantially as shown in and/or described in connection with at least one of the figures, as set forth more completely in the claims.