Abstract
Micro-speaker diaphragms play an important role in generating a desired audio response. The diaphragm is generally a circular membrane, and the cross section is a double dome, with an inner dome and an outer dome. To improve the sound quality of the speaker, a number of corrugations may be included in the outer dome region. In this study, the role of these corrugations is investigated using two kinds of finite element method (FEM) calculations.
Structural FEM modeling was carried out to investigate the change in stiffness of the diaphragm when the corrugations were included. Modal FEM modeling was then carried out to compare the natural frequencies and the resulting vibrational modes of the plain and corrugated diaphragms.
The effects of the corrugations on the vibration characteristics of the diaphragm are discussed.
Structural FEM modeling was carried out to investigate the change in stiffness of the diaphragm when the corrugations were included. Modal FEM modeling was then carried out to compare the natural frequencies and the resulting vibrational modes of the plain and corrugated diaphragms.
The effects of the corrugations on the vibration characteristics of the diaphragm are discussed.
| Translated title of the contribution | Investigation on Vibration Characteristics of Micro Speaker Diaphragms for Various Shape Designs |
|---|---|
| Original language | Korean |
| Pages (from-to) | 790-796 |
| Number of pages | 7 |
| Journal | 한국정밀공학회지 |
| Volume | 30 |
| Issue number | 8 |
| DOIs | |
| State | Published - Aug 2013 |