Speaker Edge Unit Suppressing Division Resonance
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Solution Overview
Problem
Speakers suffer from division resonance and nonlinear characteristics in their diaphragms, leading to increased distortion and unwanted frequency distortions, which degrade sound quality.
Innovation Solution
The speaker design incorporates a unique edge unit with a first edge and a second edge, featuring contact surfaces and bending surfaces to elastically connect the diaphragm and frame, creating a separation space to control vibration and suppress division resonance, thereby maintaining linearity and reducing distortion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single edge structure is used to connect the diaphragm and frame, then the structure is simple, but division resonance occurs and linearity deteriorates
Solution Approach 1:
The edge unit is divided into a first edge and a second edge positioned at different heights. The first edge connects the upper portion of the diaphragm to the frame, while the second edge connects the lower portion. This segmentation allows independent control of vibration at different locations, suppressing division resonance and maintaining diaphragm linearity during large amplitude movements.
2Ease of manufacture
If a single edge structure is used to connect the diaphragm and frame, then the manufacturing is simple, but vibration control is insufficient leading to distortion
Solution Approach 1:
The edge connection is segmented into two distinct edges at different vertical positions. The first edge at the upper position and the second edge at the lower position work together to provide comprehensive vibration control across the diaphragm surface, preventing division resonance without complicating the manufacturing process.
Solution Approach 2:
The edge unit extends into the vertical dimension with edges positioned at different heights along the axial direction. This three-dimensional arrangement of edges provides enhanced control over diaphragm vibration modes, addressing division resonance by controlling vibration at multiple vertical levels rather than at a single plane.
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 design effectively suppresses division resonance, ensuring linearity and preventing unwanted distortion, thereby enhancing sound quality and performance.
Implementation Method 1
The bending surface may include at least one bend so as to elastically connect the diaphragm and the frame
Implementation Method 2
when a current is applied to the voice coil, the magnetized voice coil interacts with the magnetic flux generated in the magnets and move in a forward/back direction
Data Source
AI summary
Provided is a speaker including: a frame; a magnetic circuit unit coupled to the frame and configured to generate a magnetic force; a voice coil provided in the frame and configured to vibrate according to the magnetic force; a diaphragm configured to vibrate and produce sound in response to the vibration of the voice coil; and an edge unit that connects the diaphragm and the frame, wherein the edge unit includes a first edge provided between the diaphragm and the frame and configured to control vibration of the diaphragm; and a second edge provided under the first edge in an axial direction of the speaker.