Abstract

The sound-producing mechanisms in the bottlenose dolphin (Tursiops truncatus) operate naturally underwater with a closed blowhole. In these experiments, Tt's reprogrammability in the vocal airborne mode and in vocal-acoustic interlock with another species is demonstrated. Human-speech (Hs) output programs were constructed from randomized vowel-consonant (VC) and consonant-vowel (CV) lists and simple English words and phrases. The analysis of the dolphin's sonic vocal output in response to these Hs vocal programs demonstrates Tt's reprogramming: in matching number of and trains of bursts, interburst silences, and latencies; ability to differentiate between Hs stimuli and other Hs comments or corrections, and ability to program from natural delphinic sounds to “humanoid” emissions.

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