Vagues/Ondes (2011)
This piece was presented in a live performance at EMS 2011 in New York City. The audio is based on hydrophone recordings of waves washing on Duxbury Beach in Duxbury, MA, USA. The portion you see in the example presented here is an excerpt of a pre-recorded audio-video piece, which accompanied with additional live audio based on the same hydrophone recordings.
I wanted to create a video piece that reacted directly to the cyclical events of the waves heard in the hydrophone recording. I wanted to visual part of the piece to represent the rising and falling intensities of the wave events, as well as the complexity of their sound.
The visual music for this piece, as well as the other two examples, was created using VDMX, a modular platform for live video performance developed for Macintosh OS X by Vidvox. VDMX is capable of taking audio input, analyzing the frequency and intensity content of that input in realtime, and generating control data from the intensity levels of several user-determined frequency bands.
I chose to analyze 4 frequency bands for each piece (different bands for each piece), and to coordinate the resulting control data to the red (R), green (G), blue (B), and Alpha channels of a gradient video synthesizer built into VDMX. I also applied delays to the R/G/B/Alpha channels to slow their rate of change somewhat, so their changes would be rendered more visibly, if less accurately. My intentions were inspired by data visualization, though the works are not intended to be a strictly accurate representation.
