关键词: 鸣声信号, 信号采集, 独立分量分析（ICA）, 蝉类

Abstract: In order to solve the problem that the mixed insects’ sound acquisition and separation cannot be carried out simultaneously in insects’ acoustics，this paper gathers the mixed cicada signals and the mixed signals is proposed for pre-whitening with new FastICA method，then recovers unknown independent sources from pre-whitening observed mixtures for the first time by using the signal acquisition and blind source separation method in Matlab environment.As is shown in the result，this method can obtain the independent source signal effectively，both observing insect behavior and analyzing signal can be conducted at the same time，it solves the difficult problem that the mixed insects’ sound acquisition and separation cannot be carried out simultaneously，this method advances a new train of thought for the further research on insects’ acoustics.

Key words: acoustic signal, signal acquisition, Independent Component Analysis（ICA）, cicada