Audio Compost
virtual frippertronic loop
Audio Compost is a performance instrument and radiophonic installation whereby the audience uses their mobile phones to capture their voice and send it into a live frippertronic loop that mixes their voices with others in an ever evolving and undetermined sonic event.
a wide image of August Black in a planetarium with colorful waveforms on the large domed screen
a wide image of August Black in a planetarium with colorful waveforms on the large domed screen
One of the most disruptive technological developments of our time is also, now, one of the most diverse and overlooked. While mobile smart phones come packed with computational capabilities (such as lidar, multiple cameras, and hi resolution displays) a very under-appreciated feature is the lowly wireless microphone built into each device. While people tend to be attentive and accepting to their own photographic image, often smitten by their own appearance, the recorded voice holds a parallax tension that is simultaneously too personal and too foreign for many to digest as easily as a photograph. Like a camera, we carry a mic with us at all times, but don't use it in the same capacity despite (or because) it is so electric and cutting.
colorful waveforms on a planetarium screen
colorful waveforms on a planetarium screen
For the performance part, the mobile phones of all participants act as both the microphone and audio output. Given 20-100 participants, each opens a simple web url in their mobile phone’s browser and clicks a button to record their voice. The recording of any participant is sent to all others in real-time. Each user sees the audio waveforms of the other participants as well as a line going across their screen to mark the current play/record head.
screenshot of colorful waveforms on a mobile screen
screenshot of colorful waveforms on a mobile screen
It has two modes. In bidirectional mode, each participant’s phone plays the entire loop in sync with all of the other participants as one big multi-channel wall of sound. In unidirectional mode, the sound is played for everyone over a PA. The software is adaptable for various installations and venues, and is part of ongoing research in how to use global networking for hyper-local connectivity - how to create, mark, or display a sense of “togetherness”.
The software is adaptable for various installations and venues, and is part of ongoing research in how to use global networking for hyper-local connectivity.
collage of 4 to 5 people in warm weather using audio compost and holding their mobile devices around someone's head
Credits
concept, software, design: August Black
Exhibitions
Audio Compost - Piksel Festival - Bergen, Norway. On-Site screen installation. 2022.
Performances
All Our Voices, All Together, All At Once for the Performance Art Week at Emmanuel Gallery, Denver, CO, April 2026. Using custom software and local network design, this piece brings all on-site participants into a sonic chant with one another using mobile devices.
Cowboy Sandbox - Laramie, Wyoming USA, 2024. Live solo performance in the Harry C Vaughan Planetarium.
Domo Lleno Festival - Bogotá Colombia, 2023. Commissioned live solo performance software in the Bogotá planetarium.
PIF Camp Festival - Soča, Slovenia, 2022. Live interactive performance.
Digital Naturalism Conference - Batticaloa, Sri Lanka, 2022. Live interactive performance.
Related Publications
Black, August. Audio Compost: a collaborative virtual frippertronic loop Proceedings of the ACM International Conference on Web Audio. Nov 19-21, 2025, Paris, France. BEST PAPER AWARD.
DOI: 10.5281/zenodo.17642103
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