spectrum

We are often interested in getting the frequency range of acoustic signals, either because we have specific predictions about its variation or simply because we want to measure other stuff within that range. Measuring frequency range is typically done by drawing boxes in Raven/Avisoft/Syrinx. An alternative way, and potentially less subjective, is to infer the range from the energy distribution in the frequency domain applying amplitude thresholds on spectrums. I have added two new functions to warbleR that do exactly that: [Read More]