Module 4 • Ecology: Case Study Part III. Spectrogram of Bowhead Whales
Teacher Notes 4-7.1b
This illustration shows a sound spectrogram of 13 calls, part of a bowhead whale “song.” The lower- frequency calls (highlighted in pink) were made by a different bowhead whale and are not part of the “song.” The faint, distant, siren-like sounds (highlighted in green) were made by bearded seals, Erignathus barbatus.
Part IV. Changing the Speed in Audacity
>> With the song still loaded, go to the “Edit” menu and choose “Select.” A secondary menu will cascade with the options. Choose “All,” as shown below.
>> Now go to the “Effect” menu and choose “Change Speed.”
>> In the “Percent Change” box, type 100. Then click “OK.”