Fig. 3From: Acoustic localization at large scales: a promising method for grey wolf monitoringTime of arrival (TOA) measures based on a spectrogram obtained using Raven Pro software. Spectrogram view preset: Hann, 1024 samples, 90% overlap, time window length of 21.5 s, frequency range from 0 to 2000 Hz, greyscale color. Red crosses: pointers placed at the start positions detected in the broadcast sound signalBack to article page