Sound and Habitat Audio Prototyping Environment (SHAPE) is a programmable device which responds directly to environmental sound and is the third iteration of Jason Cress's ongoing audio feedback project. Audio transfer begins with two inputs; a piezo-electric contact mic and an electret air mic. These elements combine to sense both vibration in material (of a given resonator) and pressure waves (in the air). Sound energy is then converted into a(n) analog and digital signal. Both electronic environments are highly programmable—allowing for quick on-site prototyping. Audio feedback and sound recursion are the primary foci here, but the device is not limited to these. Essentially, any major form of conventional sound processing is available to the artist in this low-voltage, highly portable, stand-alone device.

One could think about this as potentially being a small analog synthesizer, digital audio workstation, amplifier, and real-time processor all rolled into one miniatured configuration. Aside from the recently fabricated PCB, all of the e-components for both inputs can be found easily and reused from old speaker systems. The iRig device will eventually be reverse engineered and integrated into the custom 9V circuit. Open source software (i.e., Pure Data and MobMuPlat) make any Android or iOS device compatible with this system. Outdoor applications are particularly suitable and interesting for this prototyping environment given its extreme portability and cost-effectiveness.

> Jason Cress, Graduate Student Researcher

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