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Ornithologists use the term variety to describe the pattern of delivery of a bird song over time. In the field, it can take many minutes of listening to determine a bird’s pattern. Animated GIFs of spectrograms can condense all this listening into just a few seconds of looping video: [Read more] The Veery is a polyphonic singer; it sings simultaneously with both sides of its syrinx. The bird literally has two voices, one from each of its lungs, and it can control them separately. A single Veery sings a duet — and when you slow the song down, you can hear the bird actually harmonize with itself. [Read more] Some spectrograms match human calligraphy flourish-for-flourish in intricacy, tension, balance, and grace. [Read more] Andrew May, an associate professor of music at the University of North Texas, has composed a piece of avant-garde classical music called “Recyclers” that centers on a recording of a Northern Mockingbird that I made in Big Bend National Park in 2007. [Read more] An email from Denise Wight alerted me to the Spectrogram application for the iPhone, which is a pretty neat little app indeed. It uses the iPhone’s built-in microphone to create realtime scrolling spectrograms of any sound you’re hearing. Now those with hearing loss can see the sounds that their ears can’t hear! [Read more] Today’s post is the promised follow-up to my post on the history of spectrograms. I want to explain some basic concepts of spectrographic analysis so that I can clear up some common misconceptions and explain why some things may not always look quite the way you expected. [Read more] To understand the variation in the way spectrograms look (and why I call them “spectrograms” instead of “Sonagrams”), it’s useful to know a little bit about their history. [Read more] Well, the cycle is complete: Lesson Six on Polyphony is up. [Read more] I’ve finally posted Lesson Five on Nasality. It’s a bit of a doozy, but I’m proud of it. [Read more] I’ve published Lesson Four on trills and beats. Lessons five and six may be a while in coming, since they are slated to deal with nasality and polyphony, which is where things start to get complicated. [Read more] |
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