Time-lapse phonography

Time-lapse phonography is the name for an audio signal processing technique developed by R. Luke DuBois for his pieces [http://www.cantaloupemusic.com/CA21020.html Messiah] and [http://lukedubois.com/billboard Billboard] . The core algorithm consists of a highly modified phase vocoder that allows for the creation of a fixed or moving spectral average of an input sound represented in the frequency domain. In this sense, the technique is completely analogous to long-exposure time-lapse photography, insofar as the specific temporal details of the input will become smeared into a single gestalt impression of time.

External links

* [http://lukedubois.com/billboard Billboard]
* [http://www.wnyc.org/studio360/show111205.html Interview on the technique from WNYC-FM in New York City]
* [http://www.boingboing.net/2005/12/30/every_song_ever_to_a.html Article on Boing Boing]