CellF is pronounced "Self". This was held on the campus of the University of Western Australia in collaboration with LaSalle College of the Arts, Singapore.
The arrays are two way. That is they both detect electrical signals from the neurons and send signals back (about 1V p-p) from the outside. "The neurons give off a constant chatter called 'neuronal noise', something like white noise but it seems a lot easier on the ear.....maybe more organic ;)" (Andrew Fitch).
Some of the neurons give off spikes called 'action potentials' . These occur in various ways, sometimes erratically and sometimes with patterns.
The neurons themselves were once skin cells harvested from Guy Ben-Ary over 3 years ago.
They were converted into stem cells & then into neurons.
These need to be amplified (about 100 times) to get synth level (5V) neuronal noise signals. The action potentials are extracted using comparators to get synth level triggers. Another circuit converts synth signals into triggers (approx 7ms trigger, 1Vpeak to peak) at a voltage and shape pleasing to the neurons (large falling edge). They seem to like this feedback, without it they tend to get bored and inactive.
To prevent feedback loops there are 60 analogue switches to momentarily turn off the processing circuits when a stim signal is sent
To the left & right of the centre console is the synth itself. They appear to float on two wings.
voice, two CellF action panels, two multiband distortions,8 Frigates (frequency2CV and frequency2gate modules) and lots & lots of VCAs ---- made up of 4 voltage controlled matrix mixers (32 VCAs in each so 128 VCAs).
The CellF Voice panel
The CellF Action Panel
The NLC Synth - Left Wing
The NonLinearCircuits Synth - Right Wing.
A short recording from Sunday's performance.
You can see more videos from the night here.
CellF will also be releasing a properly recorded video from the night. I'll post links here when this
1. The CellF Project - Guy Ben-Ary
2. NLC video - July 23, 2015
3. NLC - Setting up the first concert
4. NLC - The CellF Panels
5. Muffs - CellF Semi Living modular synthesizer
Please contact me if there are any errors, omissions, etc.
I'll update this page as I go along. Jono