科幻沉重提交音

Heavy sci-fi commit sound, 600 ms. A 65 Hz sub-thump with a fast attack, followed by a metallic hatch sealing clank and a short low machine rumble. Feels like committing to a descent. Weighty, cold, final. Dry, no reverb, no cinematic impact, no musical chord. Master it quietly: peak no higher than -10 dBFS; no clipping, no distortion.