Descriptive analyses of orangutan clicks; a) Time series of an orangutan click bout. Adriano R. Lameira Madeleine E. Hardus Adrian M. Bartlett Robert W. Shumaker Serge A. Wich Steph B. J. Menken 10.1371/journal.pone.0116136.g001 https://plos.figshare.com/articles/figure/_Descriptive_analyses_of_orangutan_clicks_a_Time_series_of_an_orangutan_click_bout_/1286630 <p>Dark blue line indicates raw power spectra (dB), light blue line indicates acoustic amplitude envelop measure, and red line indicates inter-lip distance measure. <b>b)</b> Spectrographic representation; <b>c)</b> Average estimates of raw power spectra; <b>d)</b> Detrended power spectra; <b>e)</b> Coherence of orangutan clicks.</p> 2015-01-08 03:32:20 speech-like rhythm faux-speech prediction speech rhythm ape orangutan vowel 5 Hz-rhythm signals