CNMAT Flashback

A look back at some items in our archives.

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Project

Alice Unchained

Alice Unchained is a virtual chamber for chamber music. It is the third work loosely inspired by Alice in Wonderland, created by media artist Claudia Hart and composer Edmund Campion, Director, at the Center for New Music and Audio Technology, UC Berkeley. Alice mashes 3D animation, motion-captured live performance, and music performed by live and virtual musicians whose sound is analyzed in real-time and remixed in the bodies of sculptural avatars. It feeds-back the virtual and the live, blending them together in a liminal, uncanny mix.

Project

CNMAT Multi-Purpose Array

In the Summer of 2018 CNMAT was awarded a grant to construct infrastructure for producing mobile, multi-channel concert events.  We set out to construct a surround audio system, designed with robust mobility in mind, that can be rapidly deployed in numerous performance contexts.  The result is the CNMAT Mobile Array, an expandable mobile infrastructure for sonic events.  The system is conceived to be deployed in under an hour by a small crew of one or two people.  Its speaker elements are weather protected to enable work outdoors and we have included a number of flexible rigging options to

Project

SHAPE

Sound and Habitat Audio Prototyping Environment (SHAPE) is a collection of nature-inspired electroacoustic devices created for sound art in public spaces. It is part of an ongoing audio feedback research project at the Center For New Music and Audio Technologies. By repurposing old electronics and manufactured objects, low-cost materials are used to make interactive sound sculptures and musical instruments. Subtle gestures and actions by participants change the sound in real-time.

Project

Bloom

Bloom is an analog oscillator on a transparent substrate comprised of three piezoelectric transducers, one transistor, one 3V battery, three LEDs, three photoresistors, and three resistors. This circuit is configured in a feedback loop which allows it to self-oscillate. The transparent substrate and flower stem-like conductive trace design gives each component an aesthetic quality. Photoresistors on the piezo elements provide subtle interaction by changing the electrical resistance when light is more or less present.

Project

Magnetic Resonator Piano

In Spring 2019 Jeremy Wagner set out to build a piano resonating device for upcoming research projects and performances by CNMAT composers.  This work draws heavily on prior design work by Per Bloland, et al. with some improvements specific to upcoming CNMAT projects.  The design brief called for a device meeting the following criteria:

Project

Tone

Tone is an analog audio feedback circuit with a tree-like array of three electret condenser microphones, a resonant loudspeaker, 9V amplifier, and a waveguide. This circuit is configured with the loudspeaker pointed upward at the mic array which produces audio feedback. The pipe configuration is situated above the loudspeaker/resonant chamber. The loudspeaker consists of a single 4Ω coil and raised glass sphere. When a participant walks around the device a Helmholtz-like standing wave is disrupted and produces different frequencies as a result.

Recipe

Sensors Workshop 2008 Kit

Posted by Adrian Freed on July 31, 2008

This kit for the 2008 class included materials for scratch assembly of sensors, a CUI board running uOSC and a few tools such as scissors.

Recipe

How to choose a Tilt/Acceleration Sensor

Posted by Adrian Freed on March 12, 2009

The majority of acceleration/tilt sensors used these days are single integrated circuits MEMS devices. The cheap ones are made for air bag and other high volume applications. Although the chips are cheap ($5-10 Retail,<$1 in quantity), they are usually sold in surface mount packages that are inconvenient to work with without industrial quality tools.

Recipe

Fabric Proximity Sensing

Posted by Adrian Freed on November 7, 2008

Most sensing applications of e-textiles use switching, piezoresistivity or optics for direct touch sensing. This instructable shows you how to start exploring another approach - capacitive sensing to measure touch and proximity. It is based on the easy-to-use, cheap capacitance sensing chip evaluation board from Atmel/Qtouch and takes only minutes to create.

Recipe

RGB Pressure Sensitive Monome

Posted by Jeff Lubow on September 5, 2008

Because of the inherent limitations of visual feedback in a single color LED matrix (Monome), I’m starting work with
Adrian on developing an RGB Monome with pressure sensitivity. For now, I’ll focus on the multiplexing/de-multiplexing
process.

We chose the SparkFun button breakout available here:

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