From a schematic on the Experimentalist Anonymous forum, this is what they wrote about it:
This simple box realizes the common sample rate reduction effect in analog form. Sample rate reduction is essentially very low quality analog to digital conversion. A snapshot of the input signal is taken every so often and outputted. The effect comes in when the frequency of snapshots is at an audio frequency. The resulting sound is a lot like a ring modulator. This box is sort of a little brother to the Digital Lo-Fi Box. The sole knob controls the sampling frequency – no frills here!
A sound clip can be heard here, or more information including pics can be found on the EA website.
Geiri’s build with 1M pot…