Recordings, photos, and sonograms
The slides in my PowerPoint programs include my field recordings,
photos, and often include sonograms that show the rhythm
and pitches that people are hearing in the recordings.
The most important element of cricket and katydid songs in the rhythm. With the sonogram,
it's easy to see as well as hear the steady chirping of this Snowy Tree Cricket
For the Western Chorus Frog, people can see both the rising pitch
and the rhythm and pauses between songs.