FIG. 8 in A New Bromeligenous Species of Fritziana Mello-Leitão, 1937 (Amphibia: Anura: Hemiphractidae) from High Elevations in the Serra Dos Órgãos, Rio de Janeiro, Brazil

FIG. 8.—Oscillogram (A) and spectrogram (B) of five advertisement calls of Fritziana izecksohni from municipality of Teresópolis, state of Rio de Janeiro. From left to right, note the decrease of pulse-group number per call and increase of pulse-group duration and pulse number (see text). Spectrogram with Hann window function, window size 512 samples, overlap 99%, and amplitude plotted on a logarithmic scale.