Fig. 1From: Age related decline in female lar gibbon great call performance suggests that call features correlate with physical conditionWaveform (top) and spectrogram (bottom) of the lar great call, from a 24Â year old female. Three high notes are indicated, and represent the sounds associated with inhalations between great call notes. The three notes of the climax are also labeled. Window type: Hann, FFT size: 1124Â Hz, frame overlap: 50Â %. Harmonics and background noise have been removed from this imageBack to article page