Bottlenose dolphin acoustics

Tursiops truncatus

In addition to the bio sonar clicks, the bottlenose dolphin emits a 'wide range of whistles and pulsed sounds.

 

spec tursiopstroncatus 01

Sounds pulse appear to be highly variable, while the whistles have few harmonics, but can have modulation frequency between 4 and 20 kHz.

Spectrogram of vocalizations, whistles and clicks of bottlenose dolphin