Seconds
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
t20000
t tOOOo
tOOOOO
90000
80000
10000
60000
50000
40000
30000
20000
toooo
1.0
1.1
1.2
i
Hz
-48 -36 -24 -12 0
dB
~
o
<:
(b
~
~.
~
......
-...I
FIGURE 1.8. The top plot shows the time waveform. The left plot is a spectrogram of a Stenella longirostris
whistle showing the fundamental frequency and higher-order harmonics. The right graph shows the relative amplitude of the different whistle components at the
time corresponding to the dashed line
in the spectrogram. (From Au, Lammers, and Aubauer 1999.)