Figure 4 from: Iorgu IŞ, Iorgu EI, Szövényi G, Orci KM (2017) A new, morphologically cryptic bush-cricket discovered on the basis of its song in the Carpathian Mountains (Insecta, Orthoptera, Tettigoniidae). ZooKeys 680: 57-72. https://doi.org/10.3897/zookeys.680.12835

Figure 4 - Acoustic signals analysis in two close–related species: A, B oscillographic pattern of male calling song C, D a detailed syllable and the female response (marked with green) E spectrum (function: Hanning window, size: 512). A, C, E red line Isophya bucovinensis sp. n. B, D, E blue line Isophya nagyi.