Figure 2From: Application of insect songs in monitoring population density level of Locusta migratoria migratoria (Orthoptera: Acrididae) Locusta migratoria migratoria calling songs with impulse noise. (a) The time domain plot of Locusta migratoria migratoria songs and impulse noise. (b) The corresponding short-time energy diagram. (c) The corresponding Bohr square waveform.Back to article page