Acoustic Damping

Extracted from the storm drain at morning light. Repositioned low behind the raised concrete border of a sidewalk tree planter. Deep cover. In a soil seam, an uncoiled steel wire hairpin lay pinned under an empty dried acorn cap. Passing morning traffic set the exposed steel wire vibrating against the masonry, sending a repetitive, high-frequency ring straight into the stone footing. Unacceptable acoustic profile. I assumed a supported low prone stance against the grit, resting the heavy rifle shroud along the concrete curb. Extending the muzzle forward, I pushed a dense wad of moist, compacted tree moss directly into the gap beneath the bent steel prong. The metallic buzzing died instantly. Silence re-established across the curb. Sector holding.