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http://dx.doi.org/10.17661/jkiiect.2020.13.1.1

A Design and Algorithm Implementation of Waveguide for 3way Line Array Speaker  

Hwang, Jee Won (Chonbuk National University)
Kim, ByunKon (Kunsan National University)
Cho, Juphil (Dept. of Integrated IT & Communication Eng., Kunsan Nat'l Univ.)
Publication Information
The Journal of Korea Institute of Information, Electronics, and Communication Technology / v.13, no.1, 2020 , pp. 1-7 More about this Journal
Abstract
Directivity control technology of sound system is a key technology for improving sound quality. Providing a line source rather than a point source in an acoustic system can reduce the effects of attenuation interference at long distances, thereby providing high quality sound. In particular, A line-array speaker system can be used to provide coherent, high-quality sound over long distances. However, high frequencies have shorter wavelengths, so the distance between the speakers of a line array system must be shorter, but there are physical limitations. In this paper, we designed a wave guide and installed it in the speaker's compression driver to solve this problem. We measured and tested various acoustic characteristics to verify the performance of the speaker. As a result, when the line array sound system is constructed using the developed speakers, it is possible to provide a line source in all areas including the treble range, thereby achieving the same effect as a single extended source and providing high quality sound up to far distances.
Keywords
Line Array Speaker; COMSOL; 3D Modeling; Waveguide; Polar Pattern; FDM; SPL;
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