Abstract
Small speaker modules often utilize sound absorbing material within a back chamber to increase bass sound pressure. However, because manufacturing processes frequently leave these chambers partially unfilled, the material can shift and accumulate in different areas depending on the orientation of the module or the effects of forces acting on the modules (forces such as gravity or centrifugal force). This movement may alter resonant frequencies and lead to inconsistent acoustic performance.
This document discloses a speaker module that includes an internal back chamber partitioned into multiple smaller sections by integrated ribs. The partitioned sections contain sound absorbing material. The module housing integrally incorporates these ribs (e.g., through plastic injection molding) rather than utilizing separate components that include foam or mesh. The ribs restrict the movement of the material, which facilitates a uniform distribution regardless of the orientation of the device. This construction provides stabilized acoustic performance and reduces frequency response deviations without increasing assembly complexity or component costs.
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Recommended Citation
Tsai, YuTing, "Rib‑Divided Speaker Back Chamber for Preventing Sound Absorbing Material Accumulation", Technical Disclosure Commons, ()
https://www.tdcommons.org/dpubs_series/9707