Acoustic radiation characteristics of a tile projector with performance variations among unit transducers
단위 트랜스듀서 간 성능편차를 갖는 타일형 프로젝터의 음향방사 특성

Wonjong Chun, Eunghwy Noh, Won-Suk Ohm, Youngsoo Seo
2016 The Journal of the Acoustical Society of Korea  
Uniformity in transducer performance is a must-have to ensure the reliable acoustic performance of a tile projector, used for active echo reduction. However, practical limitations imposed by variations in material properties and fabrication errors lead to performance variations among unit transducers, which could degrade the radiation characteristics (transmitting voltage response and directivity) of the tile projector and ultimately the echo reduction performance. In this paper we present a
more » ... hod to minimize these adverse effects via an appropriate placement of unit transducers within the tile projector. To this end, we perform a series of coupled acoustic-piezoelectric simulations, assuming a group of 36 unit transducers having 6 dB variations in transmitting voltage response, to analyze and compare the radiation characteristics of tile projectors under different transducer placement schemes.
doi:10.7776/ask.2016.35.6.436 fatcat:jlt6hnk4lnahvhcdcqzy56np3y