A seven second traffic sound with a ‘hairpin’ shape that is softer and more diffuse than most of the other traffic sounds. At its center there is a barreling “wind” or resonance that is quite hard to hear as it barely differentiates itself from the base-level of environmental noise.
A deep, tonal drone from the corner of the room. Its shape is flat, no variation, and it switches on and off at varying intervals of 8-12 minutes. At its core a fused 5th, with the hint of a 3rd above and an 8ve below, on the threshold of heard and felt sound. This core is quiet but clearly present. A soft “wind” surrounds it, easily heard if listened for but just as easily subsumed into the base-level of environmental noise.
A high pure tone lasting 21 seconds. More resonant than a dry sine-tone. Unplaceable, it is immediately and persistently audible, but doesn’t ‘cut’ through the sound of the room so much as gently hang, neither nearby nor far away. It lasts longer than it seems it should, sustaining through and after other sounds that it could have been related to.
Three nested waves of traffic noise, at some distance, with no sense of panning from left to right. Lasting 17 seconds, the waves’ hairpin shapes dovetail and surround each other, slower and more orderly than ocean waves breaking.
A drone belonging to a large building. Its lowness relegates it to an audible periphery - often unheard. When listened for it dominates - it feels immeasurably low and loud, neither tone nor noise, but is only felt in the ears.