Speaker Damper with Mixed Weave Patterns for Distortion Control
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Solution Overview
Problem
Speakers face issues with distortion and nonlinear characteristics during large amplitude vibrations, leading to undesirable frequency characteristic distortions, which existing technologies have not adequately addressed.
Innovation Solution
The speaker incorporates a damper with different weave patterns in its portions to reduce distortion and improve linearity, specifically using a combination of plain weave, twill weave, and satin weave to enhance mechanical rigidity and sound quality, while securing the required lower limit frequency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the vibration system operates with a vertical amplitude (large amplitude), then the speaker can generate stronger sound pressure, but the vibration system exhibits nonlinear characteristic to generate split vibrations, resulting in frequency characteristic distortion
Solution Approach 1:
The damper is constructed with different weave patterns in different regions: a plain weave pattern in the central region and a twill weave pattern in the outer region. This local differentiation allows the central region to provide controlled compliance for the voice coil while the outer region maintains structural stability, thereby reducing nonlinear vibrations and improving frequency characteristic linearity even during large amplitude operations
Solution Approach 2:
The damper combines multiple weave patterns (plain weave and twill weave) within a single component to create a composite structure with spatially varying mechanical properties. This composite approach enables the damper to simultaneously achieve regions of high compliance and regions of high rigidity, resolving the contradiction between allowing large amplitude motion and maintaining linear vibration characteristics
2Ease of manufacture
If a uniform weave pattern is used in the damper, then the manufacturing is simpler, but the linearity of the vibration plate cannot be secured during large amplitude vibrations
Solution Approach 1:
The damper employs different weave patterns in different regions to provide spatially varying mechanical properties. The central region uses plain weave for compliance while the outer region uses twill weave for stability, achieving vibration linearity without excessive manufacturing complexity
3Strength
If the damper is made with high mechanical rigidity, then the structural stability is improved, but the low limit frequency cannot be sufficiently improved
Solution Approach 1:
The damper provides high rigidity in the outer region through twill weave pattern while maintaining appropriate compliance in the central region through plain weave pattern. This local differentiation allows the damper to support the structural requirements for high mechanical rigidity while simultaneously achieving the softness needed to lower the low limit frequency
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 effectively minimizes distortion and maintains linearity, thereby enhancing sound quality and achieving improved low-frequency performance.
Implementation Method 1
when current is applied to the voice coil, the magnetized voice coil interacts with a magnetic flux generated by the magnet to move back and forth, so that the diaphragm vibrates to generate sound pressure
Implementation Method 2
a portion of the damper has a different weave from the other portion, the speaker may reduce the generation of a distortion factor and a distortion, while securing the linearity of the vibration plate
Data Source
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AI summary
Disclosed herein is a speaker. The speaker includes a magnetic circuit device provided to generate a magnetic force, a voice coil configured to vibrate by the magnetic circuit device, and a damper configured to guide a movement of the voice coil, wherein the damper comprises a first portion, and a second portion having a different weave than the first portion.