The time domain plot shown here
is a small portion (time-wise) of the previous plot - a zoom-in. At first
glance, what do we see ?
-
A series of spikes
- perhaps 50 or so. Each of these 'spikes' is a cycle of vibration just
as the nice smooth animated sine waves we previously examined were. The
difference, however, is obvious - these are not nice, smooth sine waves.
This is a 'real-world' time domain plot.
-
The amplitude
of the 'spikes' varies a great deal.
-
There appears,
at times, to be changes in frequency of the spikes (in some areas, there
are 2x or 3x as many spikes than in other areas).
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