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The innovation of touch-tone telephony revolutionized the telecommunications industry by replacing the traditional rotary dial with a dual-tone multi-frequency (DTMF) signaling system. This system uses a matrix-style keypad with buttons arranged in four rows and three columns, creating 12 distinct signals each assigned to a pair of frequencies. Each button press results in a simultaneous generation of two sinusoidal tones – one from a low-frequency group (697 to 941 Hz) and one from a...

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Updated: Mar 15, 2026

Flow-pattern Guided Fabrication of High-density Barcode Antibody Microarray

Flow-pattern Guided Fabrication of High-density Barcode Antibody Microarray

Published on: January 6, 2016

一种代的快速麦克风阵列设计方法,采用等边三角形子阵列.

Xiaobin Hong¹, Wentao Yao¹, Yuanming Chen²

¹School of Mechanical & Automotive Engineering, South China University of Technology, Guangzhou 510641, China.

Sensors (Basel, Switzerland)

|March 14, 2026

概括

此摘要是机器生成的。

本研究介绍了一种高效的代方法,用于设计使用等边三角子数组的麦克风阵列. 该方法优化了特定频率的阵列性能,平衡成像质量和硬件成本.

关键词:

形成声波束的声波束形成.声学成像的成像技术麦克风阵列设计设计

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相关实验视频

Last Updated: Mar 15, 2026

Flow-pattern Guided Fabrication of High-density Barcode Antibody Microarray

Flow-pattern Guided Fabrication of High-density Barcode Antibody Microarray

Published on: January 6, 2016

Micro-drive Array for Chronic in vivo Recording: Tetrode Assembly

Micro-drive Array for Chronic in vivo Recording: Tetrode Assembly

Published on: April 22, 2009

A Paired Bead and Magnet Array for Molding Microwells with Variable Concave Geometries

A Paired Bead and Magnet Array for Molding Microwells with Variable Concave Geometries

Published on: January 28, 2018

科学领域:

声学声学在声学方面
信号处理信号处理
阵列设计阵列设计

背景情况:

用于工业声学成像的麦克风阵列设计面临的挑战包括频率依赖性性能,高计算成本和硬件费用.
现有的优化方法通常需要同时设计所有元素,导致漫长的流程和元素数量不灵活.

研究的目的:

为麦克风阵列设计开发一种快速和代的方法,克服当前方法的局限性.
为了实现特定频率的性能优化和对数组元素的直接控制.

主要方法:

提出了一种使用等边三角子数列作为基本单位的代设计方法.
采用遗传算法来优化新添加的子数组在每个代中为目标频率的放置.
利用旋转对称性和数组点扩散函数特征来降低计算复杂性.

主要成果:

实现了优化变量和计算域的显著减少,以实现高效的数组设计.
显示频率特定的性能优化,并直接控制元素数量.
与经典配置相比,设计的阵列显示了主叶宽度和侧叶水平性能在目标频率附近的改进.

结论:

提出的代方法提供了声学成像性能和硬件成本之间的实际平衡.
这种方法为工业麦克风阵列设计提供了灵活且计算效率高的解决方案.