This is a short test of some mapping strategies between GPS data and the CataRT Real-Time Corpus-Based Concatenative Synthesis System - developed by Diemo Schwarz, IMTR Team, Ircam--Centre Pompidou.

About the CataRT software:

"The concatenative real-time sound synthesis system CataRT plays grains from a large corpus of segmented and descriptor-analysed sounds according to proximity to a target position in the descriptor space. This can be seen as a content-based extension to granular synthesis providing direct access to specific sound characteristics."

catart.concatenative.net/

About the GPS Patch:

I have recently been updating my GPS Control patch to include the option of outputting speed and altitude information embedded in recorded GPX files. This particular route is of a 10km bike ride in downtown Sydney. The segmented sound files that comprise the audio corpus in CataRT are numerous recordings of bicycle sounds (brakes, wheels etc), and urban field recordings from around the area.

The route has been condensed to be read out over a 2 minute duration - mappings (scaled to descriptor ranges) are as follows:

Longitude - Periodicity
Latitude - Spectral Centroid
Altitude - Loudness

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