Flat-Panel Loudspeakers are most effective at reproducing audio non-directionally when operating at frequencies with many overlapping modes. Frequency regions with low modal overlap produce directional acoustic radiation, long decay times, as well as sharp peaks and notches in pressure. Exciter arrays re-enable use of these frequency regions by restricting structural excitation to a single mode until the frequency region of high modal overlap. An optimization method is described here for determining the placement of exciters such that they are all driven by a single amplifier yet only excite a single structural mode. Experimental results are reported for an acrylic panel with 4, 8, and 11 exciters that demonstrate successful operation of the exciter arrangements.
Click to purchase paper as a non-member or you can login as an AES member to see more options.
No AES members have commented on this paper yet.
To be notified of new comments on this paper you can
subscribe to this RSS feed.
Forum users should login to see additional options.
If you are not yet an AES member and have something important to say about this paper then we urge you to join the AES today and make your voice heard. You can join online today by clicking here.
