Envelop for Live (E4L)
Envelop for Live (E4L) is an open source audio production framework for spatial audio composition and performance. Envelop for Live combines Ableton Live as a front end and music production environment with a Max/MSP application as a standalone spatial effects processor and renderer. Envelop for Live is designed to be a highly modular, flexible platform for artists to compose and perform spatial audio, and for developers to create new kinds of audio effects for the Ambisonics domain.
Check out the Installation Guide, User Guide, and Contribution Guidelines on Google Docs.
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The Envelop for Live server/client system consists of a set of Max For Live devices that communicate via OSC to a spatial processing server running either on the same computer via a Jack Audio Router or on a separate computer. OSC messages are dispatched to the server via a "client" Max patch, which allows a global view of the spatial scene, and facilitates synchronized group processing when needed.
Version 1 of the Envelop for Live system was developed by Rama Gottfried, and is modeled on the architecture of Ircam-Spat combined with an odot port of Alex Harker's "Convolution Reverb Pro" Max For Live device adapted for use with B-Format impulse responses.
For more information on the signal processing architecture please see:
- Jean-Marc Jot, "Efficient models for reverberation and distance rendering in computer music and virtual audio reality" IRCAM, 1997.
- Markus Noisternig, Thomas Musil, et. al., "A 3D Real Time Rendering Engine for Binaural Sound Reproduction", ICAD, 2003.
- Harker, Alexander and Tremblay, Pierre Alexandre "The HISSTools Impulse Response Toolbox: Convolution for the Masses", ICMC, 2012.
For information on the CNMAT-odot system please see:
- John MacCallum, Rama Gottfried, Ilya Rostovtsev, Jean Bresson, and Adrian Freed, "Dynamic Message-Oriented Middleware with Open Sound Control and Odot", ICMC, 2015.