Each of the spikes lasts about 10ms and looks something like
You can clearly see at least three characteristic frequencies in the signal which presumably correspond to different drum modes of a vibrating facet in a crumpled sheet of mylar.
This an example of a time sequence of the sound emmited by a crumpled
piece of mylar. The horizontal axis is time and the vertical axis is
the sound amplitude.
Each of the spikes lasts about 10ms and
looks something like
You can clearly see at least three characteristic frequencies
in the signal which presumably correspond to different
drum modes of a vibrating facet in a crumpled sheet of mylar.
