Graphene oxide-based materials have shown promise in loudspeaker membrane applications. The material allows the forming of highly stiff, low mass cones and domes for loudspeakers. The technology allows improvements in efficiency and linearity over other common loudspeaker membrane materials. This class of graphene material can be engineered to produce an excellent ratio of stiffness (Young’s modulus) to density (g/cm3) and damping (tan ? ). In a case study, acoustically optimized graphene materials were formed into membranes for headphone drivers. The performance of headphone drivers made with these membranes was analyzed and compared to standard polymer membrane headphone drivers. Relative to the polymer membrane drivers, the graphene membranes provide a significant reduction in both intermodulation and harmonic distortion while matching the sensitivity and producing a substantially smoother frequency response.
https://www.aes.org/e-lib/browse.cfm?elib=20567
Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!
This paper costs $33 for non-members and is free for AES members and E-Library subscribers.
Learn more about the AES E-Library
The Engineering Briefs at this Convention were selected on the basis of a submitted synopsis, ensuring that they are of interest to AES members, and are not overly commercial. These briefs have been reproduced from the authors' advance manuscripts, without editing, corrections, or consideration by the Review Board. The AES takes no responsibility for their contents. Paper copies are not available, but any member can freely access these briefs. Members are encouraged to provide comments that enhance their usefulness.
Start a discussion about this paper!
