Conventional loudspeaker membranes generally use cone or dome shapes, which permit the increase of the first frequency which presents a non-rigid body motion behavior, the so-called break-up frequency. A flat membrane for example has a minor geometrical stiffness if compared to standard shapes, bringing some vibration problems. On the contrary flat membranes have an interesting potential, which is a wide dispersion characteristic in the high-frequency range. A new mechanical device is presented to control loudspeaker flat membrane vibrations and it relies on both mechanical driving and damping. Both virtual and physical loudspeaker prototypes are developed and then compared using simulations and measurements.
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.
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.