空间自适应的被动声源定位系统的设计
DESIGN OF SPATIAL ADAPTIVE PASSIVE SOUND SOURCE LOCATION SYSTEM
李博涵 1邵燕宁 1曹子君 1毛胜春 1王红理1
作者信息
- 1. 西安交通大学物理学院,大学物理国家级实验教学示范中心,陕西西安 710049
- 折叠
摘要
传统的声源定位技术分为时延估计和空间定位两步,本文将几种经典的时延估计和空间定位方法加以整合与改进,提高了系统的实时性与抗干扰能力,创新性地提出并实现了根据声源位置变化而 自适应调整麦克风阵列形态的定位系统,在不降低实时性的同时,有效地降低了定位误差.本文从定位精度、实时性和抗干扰能力三个方面对系统性能进行评估,实验证明:理想条件下,该声音定位系统的不确定度在4cm以内;对噪声和混响有较好的抵抗能力,在恶劣环境下不确定度不超过6cm;单次定位耗时0.5s,可以对运动声源或脉冲声源进行定位,有较强的实时性,可以适用于大部分应用场景.
Abstract
The traditional sound source location technology is divided into two steps:time de-lay estimation and spatial location.This paper integrates and improves several classical time delay estimation and spatial location methods to improve the real-time performance and anti-interference ability of the system,innovatively proposes and implements a location system that adaptively adjusts the shape of the microphone array according to the change of sound source position,and effectively reduces the location error without reducing the real-time per-formance.This paper evaluates the system performance from three aspects:positioning accu-racy,real-time performance,and anti-interference ability.Experiments have shown that un-der ideal conditions,the uncertainty of the sound positioning system is within 4cm;Has good resistance to noise and reverberation,with an uncertainty of no more than 6cm in harsh envi-ronments;A single localization takes 0.5 seconds and can locate moving or pulsed sound sources with strong real-time performance,making it suitable for most application scenarios.
关键词
声音定位/麦克风阵列/时延估计/自适应调节/自动控制Key words
sound localization/microphone array/time delay estimation/adaptive adjust-ment/auto-control引用本文复制引用
基金项目
西安交通大学本科教学改革研究拔尖专项(2022)(22BJ02Y)
教育部产学合作协同育人项目(2022)(220902557023244)
国家级大学生创新创业训练计划(2023)(S202310698227)
出版年
2024
国家科技期刊平台
NSTL
万方数据