Toshiba Standard Telephone - Manual

The frequency of the sounds produced by a
bottlenose dolphin ranges from 0.25 to 150
KHz. The lower frequency vocalisations (ab
0.25 to 50 kHz) probably function mainly
in social communication. Social signals
have their most energy at frequencies less
than 40kHz. Higher frequency clicks (40 to
150 kHz) probably are used primarily in
echolocation. Peak frequency of typical
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