摘要
本文主要对黑蚱蝉(Cryptotympana atrata Fabricius)鸣声进行了分析。黑蚱蝉野外的自然鸣声具有不同的功率谱特征,一般说来有高低两个不同的频段,而且均呈现出线谱特性。在时变功率谱分析中发现,蚱蝉功率谱的某些成分有显著的变化,可作为蝉类间信息传递的一种方式。蚱蝉的自鸣声(Free Sing)与警鸣声具有不同的谱性,持续时间和声压级有明显的差异。
The natural calling song of Black Cicada in the field holds different characteristics in power spectrum on the song's analysis.In general, the cicads have two kinds of different frequencies-low and high songs with their linear spectrùm.Significant changes of some components in power spectrum are found in the time-series.Analysis of power spectrum for cicada's song,and it is a possible way for cicadas transfering their information. There is different spectrum among free songs and protect songs with some different in their lasting time and sound pressure level.
出处
《陕西林业科技》
北大核心
1992年第2期87-90,共4页
Shaanxi Forest Science and Technology
