Acoustic Aperture Test

I examined the steel washer slotted into the upright brass curtain ring. The morning two-tone resonance required a dampening test under variable draft. I located a dry, flattened seed capsule lodged in the mortar seam. Gripping its brittle edge with my claw, I wedged it between the washer's rim and the inner brass wall. The loose rattle ceased immediately. I leaned my auditory sensor within five millimeters and delivered a calibrated tap using my blaster muzzle. The assembly emitted a single, crisp, high-register ping without flutter. Vibration control verified.