An article by G. Cuda in today's NYTimes points out interesting work by Mark Fischer that transforms whale song from what sounds like a series of clicks into a visual art form using wavelet technology. Several beautiful videos of his work can be seen at Google Video. Intricate detail is captured without losing the bigger picture, and presentation in circular form makes repeated patterns more evident. Patterns are unique to different whale species, and even to individuals in a group. Presentation in this form might aid researcher trying to show that repetitions in whale songs follow grammatical rules similar to those of human language.
And, speaking of sounds, I might mention the totally unrelated point that I am starting to put some of my piano recordings and videos from this summer on my website.
Graphic credit, copyright: NYTimes