摘要
利用带有摄像装置的害虫声音采集平台，使用大震膜电容麦克风在隔音量约28dB的隔音箱内对黄粉虫成虫的爬行和咬食活动的声音进行了提取，利用虚拟声卡万用仪对提取的声音文件进行了交流电压和频谱两方面的处理分析．测定结果表明：黄粉虫成虫咬食活动的声音脉冲信号的时间带有明显规律性，时间间隔约为0．6s．爬行和咬食两种活动声音的交流电压有效值均值、变化范围都呈明显的倍数关系，爬行活动声音的交流电压有效值均值为0．0333V，高于咬食活动声音产生的电压有效值均值0．0136V，表明无论黄粉虫成虫爬行还是咬食活动的声音频率都更趋向集中在低频段，咬食活动的声音频率的主峰值频率（70～93Hz）低于爬行活动（140～180Hz）．因此，害虫活动具有多样性，相应产生的活动声音也具有其本身的特征和差别，利用本研究的声音检测方法，可以准确地检测这些害虫活动的特征声音，将为研究开发新型的储粮害虫声音检测技术提供有价值的参考数据．
Creating an acoustical chest, which can averagely insulating sound about 28 dB, shield against ambient noise and designing an flat roof with a vidicon to detecting insects activities. Use big vibrating film capacitive microphone to detect Tenebrio molitor Linnaeus adult walking and feeding activity sounds, then the data by Virtual Sound Card Multi - instrument in alternating current voltage and audio frequency spectrogram were analyzed. The results showed that the feeding activity sound pulse signals by Tenebrio molitor Linnaeus adult is orderliness, the time alternation of two sound pulse signal is about 0.6 s. Both walking and feeding activities cause the alternating current voltage change, the average value of virtual value of current voltage and current voltage changing range shows multiple relations obviously. Walking sound can cause 0. 033 3V, higher than feeding sound 0. 0136 V. The results of audio frequency spectrogram showed that both of tested activity is trend to low frequency segment, the apex of feeding sound frequency is （70 -93 Hz） lower than walking（ 140 180 Hz）. This research indicated that the insects activities are diversity, so the interrelated sounds are different, researches of insects sound detection technique should take these factors into account, by the method of this paper mentioned, researchers can find insect characteristic sound, which can help to explore new acoustical detection technique and support valuable data.
出处
《河南工业大学学报（自然科学版）》
CAS
北大核心
2008年第6期39-44,共6页
Journal of Henan University of Technology：Natural Science Edition
关键词
黄粉虫
爬行
咬食
声音检测
频谱
Tenebrio molitor Linnaeus
walking
feeding
acoustic detection
frequency spectrogram
