door
ドア一枚、隔てて聴く。
A sound from behind the door — architectural acoustics, physically modeled. Six materials, one hinge, one impulse response per room.
壁越しの音を、建築音響の物理モデルで。
Load an audio file from the panel at the bottom — or pick pink/white noise — and play it through the door.
下のパネルから自分のオーディオファイルを読み込めます。
Paper and lattice — barely a barrier. Even closed, the highs walk through. A sliding door.
A hollow-core panel. The voice band leaks; the kick stays.
Mass-loaded panel. Mids muted, the room stays its own.
Brittle, ringing — sharp highs, almost no warmth.
Industrial, dense. A narrow band leaks at the seam.
Closed, almost silent — only sub-bass remembers it. Open and the room behind floods out.
Coincidence frequency from the material itself fc = (c²/2π)·√(ρs/Bp)
The dip in the transfer function isn't tuned by ear. Thickness, density, Young's modulus, damping go in; the filter response comes out.
The moment a closed door begins to crack
A smoothstep between 0.5° and 4° opens the leak path with an almost physical onset. Past 55° it fades and the direct sound takes over.
A different room behind every material
Procedural impulse responses — short and bright for shoji, long and dark for soundproof. Tunable per preset.
Sub-bass makes the door tremble
A 20–200 Hz envelope drawn from the audio thread shakes the visual door — biggest on shoji, zero on soundproof.
近日公開
The build is finished and validated; release notes are being polished. Follow @kosame_jp on x.com for the release notice.