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Fig. 5.4 Examples of spectrograms showing general categories of whistles contours. (a) Constant,
(b) Upsweep or ascending, (c) Downsweep or descending, (d) Concave or ascending-descending,
(e) Convex or descending-ascending and (f) Sinusoidal or multiple
5 Marine Mammal Bioacustics Using Towed Array Systems in the Western South…
Fig. 5.4 Examples of spectrograms showing general categories of whistles contours. (a) Constant,
(b) Upsweep or ascending, (c) Downsweep or descending, (d) Concave or ascending-descending,
(e) Convex or descending-ascending and (f) Sinusoidal or multiple
5 Marine Mammal Bioacustics Using Towed Array Systems in the Western South…