应用于智能安防的声音定位方法研究  

The Study of Sound Localization for Intelligent Security

作　　者：邵旭[1] 张金林[1] 马光彦[1] 

机构地区：[1]解放军理工大学,江苏南京210007

出　　处：《电子质量》2012年第6期8-15,共8页Electronics Quality

摘　　要：安防场所突发事件引起的声源参数与普通声源有着较大区别,通过对时域波形、频谱和功率谱的分析,发现突发声源相对于普通声源时域波形幅度突然变大然后急速衰减,幅值较大的频率集中在较窄频段内,功率谱曲线的斜率变化很小。再对混合声源的参数进行分析,发现其较大程度地保持了突发声源的特点,结合传统的时延定位算法,提出针对安防场所的声音定位法,并以幅度为例,对该方法做了仿真,仿真结果证实将幅度的突变作为报警条件,幅度最大值作为定位时刻的定位方法效果良好。The parameters of sound source which arising from the emergencies is quite different from the ordinary.Throw the analysis of time-domain wave form,spectrum and power spectrum of the burst source and ordinary source,it find that amplitude of the burst source abrupty after the rapid decay,assignment frequency concentrated in a narrow band, power spectrum slope of the curve changed very little.The mixed sound source remains the characteristics of the burst.Combined with the traditional time-delay positioning method,the sound positioning in the field of security is proposed.And the simulation is done with amplitude for example.

关 键 词：声音定位 声音监控 声音报警 

分 类 号：TP277[自动化与计算机技术—检测技术与自动化装置]