基于自相关最大值和过门限率的语音端点检测 a speech endpoint detection algorithm based on maximum of auto-correlation function and amended threshold-crossing rate.pdfVIP
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基于自相关最大值和过门限率的语音端点检测 a speech endpoint detection algorithm based on maximum of auto-correlation function and amended threshold-crossing rate
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基于自相关最大值和过门限率的语音端点检测 ·论文·
席大林-,李如玮I,陈海龙2
(1.北京工业大学 电子信息与控制工程学院,北京100124;2.北京航空航天大学电子信息工程学院,北京100080)
【摘 要】语音处理中,在噪声环境尤其是在非平稳噪音环境下进行端点检测是很困难的。在低信噪比的情况下。
传统用于端点检测的特征参数不能充分描述语音信号的特征,导致端点检测的效果严重退化。为此,笔者从语音信
号的时域或频域出发,提出了一种把短时自相关函数最大值和短时过门限率相结合的方法。实验表明,该方法弥补
了自相关函数最大值方法和过零率的不足,提高了语音端点检测的性能。
【关键词】自相关;过零率;过门限率
【中图分类号】TN912 【文献标识码】A
A Detection BasedORMaximumofAuto-correlationFunctionandAmended
SpeechEndpoint Algorithm
Rate
Threshold-crossing
XIDa-linl,LIRu-weil,CHEN
Hai-lon92
ofElectronicInformationandControl of
(1.School 100124,China;
Engineering。BeijingUniversityTechnology,Beijing
2.SchoolofElectronicandInformation 100080,China)
Engineering,BeihangUniversity,Beijing
detectionisdifficultin inthe of
【Abstract]Inspeech presence
processing,endpoint noisyenvironments,especially
be
noise.Thetraditionalcharacteristic forthe detectioncannot
non--stationary parametersendpoint adequately
describedthecharacteristicsof insevere oftheeffectof detectionin
signals, degradation endpoint
speech resulting
So method witIl
lowSNR anovel thatmaximumo
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