Walking in the city (or elsewhere), sounds are heard and recorded without employing the subjective and limiting filter of conventional, transducer based sound recording technology.
So he’s describing sounds in text rather than laying them down magnetically, posting aural impressions from the field, without sound. For the opening, they set up a projector in a space in Miami and showed the posts. Sample results:
SFX: Folding Subway Seat Recoiling
SFX: Over Twenty Trash Bags Buffeted by Breeze
SFX: Sliced Potatoes Frying in Oil Filled Vat
SFX: Three Helium Filled Ballons Rubbing against Corrugated Metal Scaffolding