Page 208 - 《应用声学》2025年第1期

第 44 卷 第 1 期 Vol. 44, No. 1
2025 年 1 月 Journal of Applied Acoustics January, 2025

⋄ 研究论文 ⋄

相控阵列扬声器实验系统设计与研究 ∗

温怀疆 1† 罗明从 2

(1 浙江传媒学院媒体工程学院 杭州 310018)

(2 浙江警官职业学院安全防范系 杭州 310018)
摘要：为实现对一定频率范围声波的指向性进行定量控制，研究这些声波的受控特性，借鉴天线相控阵原理，
提出了相控阵列扬声器实验系统的设计思路：该相控阵列扬声器实验系统包含 6 个大小不等的线阵列以及分
频移相处理电路等，每个线阵列有 7 个阵元。分频电路通过数字信号处理技术 (DSP) 芯片 AUDU1667 将频率
为 200 Hz∼ 12.8 kHz 的 6 个倍频程音域进行 6 × 4 路的 1/4 倍频程分频，移相电路进行 7 路等相位差的移相处
理，最后将同一倍频程内 (如 200 ∼ 400 Hz) 的 4 个相邻 1/4 倍频程分频通道中相位相同的信号合并，形成 7 路
混合输出信号，经放大后驱动本阵列的 7 个阵元，按倍频程信号不同分别驱动相应线阵列组还音。6 个线阵列
同时工作可实现声音在空间中某一区域内的定向传播。在实践方面，对 DSP 分频、移相电路和阵列声学等进
行了大量仿真与实验测试，实测数据结果显示设计方案基本可行。
关键词：线阵列；指向性；移相；声压级
中图法分类号: TN643 文献标识码: A 文章编号: 1000-310X(2025)01-0204-12
DOI: 10.11684/j.issn.1000-310X.2025.01.022

Design and research of an experimental system for phased array speakers

1
WEN Huaijiang and LUO Mingcong 2
(1 College of Media Engineering, Communication University of Zhejiang, Hangzhou 310018, China)
(2 Department of Safety Prevention,Zhejiang Police Vocational Academy, Hangzhou 310018, China)

Abstract: In order to realize the quantitative control of the directivity of sound waves in a certain frequency
range and study the controlled characteristics of these sound waves, the principle of antenna phased array is
used to propose the design idea of the phased array speaker experimental system: The phased array speaker
experimental system includes 6 line arrays of varying sizes and a frequency division phase shift processing
circuit, with each line array having 7 array elements. The frequency division circuit DSP chip AUDU1667
divides 6 octave frequency ranges from 200 Hz to 12.8 kHz into 6×4 channels of 1/4 octave frequency. The
phase-shifting circuit performs 7-channel equal phase difference phase-shifting processing, and finally merges
the signals with the same phase in four adjacent 1/4 octave frequency division channels within the same octave
(such as 200–400 Hz) to form 7-channel mixed output signals. After amplification, the 7 elements of this array
are driven, and the corresponding line array groups are driven separately according to the different octave
signals. 6-line arrays working simultaneously can achieve directional propagation of sound in a certain area of

2023-08-16 收稿; 2024-03-17 定稿
2020 年浙江省基础公益研究项目 (LGF20F010001)
∗
作者简介: 温怀疆 (1969– ), 男, 浙江苍南人, 硕士, 教授, 研究方向: 广播电视技术。
† 通信作者 E-mail: whj0531@126.com