南京大学学报（自然科学版）2019，Vol.55Issue(2)：180-190,11.DOI:10.13232/j.cnki.jnju.2019.02.003
指向性小尺度线性扬声器阵列鲁棒性研究
Research on robustness of directional small-size linear loudspeaker array
摘要
Abstract
With the rapid development of communication portable devices in recent years,the sound focusing system based on the loudspeaker array has been highly concerned by researchers,and its sound playback performance can generally only be realized using the small-scale linear loudspeaker array.Acoustic Contrast Control(ACC)algorithm concentrates the sound energy of the system in the bright zone by maximizing the sound energy ratio between the bright zone and the dark zone.The algorithm has a good application prospect in the realization of the acoustic focusing of the small-scale linear loudspeaker array.Most of the analysis on the acoustic contrast control are based on free-field model.However,in practical application in normal rooms,both the reverberation and the near-field scattering effects cannot be neglected,especially when a small size array system is used.This paper focuses on this problem and establishes a system model consisting of a 5-channel linear loudspeaker array,which concentrating the sound energy of the system mainly in the bright zone in the endfire direction of the linear loudspeaker array.The robustness of the focusing performance of the system is analyzed under the joint influence of reverberation and near-field head scattering.The experimental system is constructed to verify the acoustic focusing performance of the actual system.关键词
扬声器阵列/声对比度控制/混 响/人头散射Key words
loudspeaker array/Acoustic Contrast Control/reverberation/head scattering分类
数理科学引用本文复制引用
章康宁,卢晶..指向性小尺度线性扬声器阵列鲁棒性研究[J].南京大学学报（自然科学版）,2019,55(2):180-190,11.基金项目
国家自然科学基金(11874219) （11874219）
