Assertion: humpback whale's song | /r/MadeOf | several sounds
Facets:
value: in a low register
type: OTHER
Source sentences:
text: Each song consists of several sounds in a low register, varying in amplitude and frequency and typically lasting from 10 to 20 minutes.
text: Each song consists of several sounds in a low register, varying in amplitude and frequency and typically lasting from 10 to 20 minutes.
text: Each song consists of several sounds in a low register (range of a note) that vary in amplitude (measure of a wave) and frequency, and typically lasts from 10 to 20 minutes.