声源定位系统的广义二次互相关算法改进与测试

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Improvement and test of generalized quadratic cross-correlation algorithm for sound source localization system

XUBin1，MAPengfei²，ZHANGHengyuan²，WUShanqiang1，WANGBinrui1 （1.CollegeofMechanicalandElectricalEngineering，China JiliangUniversity，Hangzhou 31Oo18，China; 2.Shenhua Group Zhungeer Energy Sources Co.，Ltd.，Ordos O17ooo，China）

Abstract：Inviewoftheunsatisfactorysoundsourcelocalizationefectduetotheporaccuracyof generalized crosscorrelation timedelayestimationintheindoorenvironmentwithcomplexnoiseandreverberation，animprovedgeneralized quadraticcross-correlation timedelayestimationalgorithmbasedonweightingfunctionof phasetransform（PHAT）isproposed. Onthebasisofgeneralizedquadraticcross-correlation，theinfluenceofdiferentchannelsontimedelayestimationiscosidered comprehensively，andthequadraticcross-corelation function isweightedbytheimprovedPHATfunction.BasedonLabVIEW，a soundsourcelocalizationsystemisdesignedbycombining five-elementmicrophonearrayanddataacquisitioncard.The generalizedcros-orrelationalgoritm，thegeneraiedquadraticross-orrelationalgritandtheimproedalgorithare subjectedtothesoundsourcelocalizationexperimentsandanalysis.Theexperimentalresultsshowthatincomparisonwith the traditionalgenealidcos-orrelationalgoihndgnealiedquadaticoss-oelationalgorittheimproedalgm hasstrongeranti-noiseandanti-reverberationability，moreaccuratetimedelayestimationandhighersoundsourcelocalization accuracy in complex noise environment.

Keywords：soundsource localization；time delay estimation；microphonearay；LabVIEW；generalizedquadratic crosscorrelation;weightingfunction

0 引言

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