This manuscript presents some recent results on directivity control and efficiency of parametric loudspeakers utilizing horns. Horns act both like an acoustic transformer and a directivity control method. An experimental device has been built and measurements have revealed that the horn has a clear influence on the audible sound levels and directivity of the parametric loudspeakers. When compared with a conventional megaphone, a much more flat frequency response is obtained and the resulting directivity is shown to be almost frequency independent.
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CITATION STYLE
Sayin, U., & Guasch, O. (2013). Directivity control and efficiency of parametric loudspeakers with horns. The Journal of the Acoustical Society of America, 134(2), EL153–EL157. https://doi.org/10.1121/1.4812446