{"id":"player-piano-roll","no":385,"name":"Player Piano Roll","ja":"自動ピアノロール","era":"1896–1930s","family":"記譜の様式","kind":"スタイル","collection":"Dictionary expansion 21","addedAt":"2026-08-18","source":{"title":"The Pianola Institute","url":"https://www.pianola.org/"},"reference":{"status":"verified","pageUrl":"https://www.pianola.org/","credit":"The Pianola Institute","gallery":[{"imageUrl":"https://commons.wikimedia.org/wiki/Special:FilePath/PlayerPianoRoll.jpg?width=640","pageUrl":"https://commons.wikimedia.org/wiki/File:PlayerPianoRoll.jpg","credit":"自動ピアノのロール（CC BY-SA 4.0）"}]},"essence":"紙に開けた穴が演奏そのものになる巻紙の記録メディア。人が読む楽譜から機械が読む符号への転換点で、パンチカードとデジタルシーケンサーの先祖にあたる。","cues":["穿孔の列","巻紙のスクロール","機械可読の音楽","演奏の物理的記録"],"intents":["技術","懐かしさ","遊び"],"works":["演奏データを物として展示し、機械が読む様子を見せたいとき","縦にスクロールする時間軸で、曲の構造を可視化するとき"],"recipe":{"type":"穴の長さが音長、横位置が音高という対応を最後まで崩さない","layout":"巻き取り方向を時間軸に取り、強弱と操作の穴は両端へ寄せる","material":"紙は湿度で伸縮するため、穴の間隔に読み取りの余裕を残す"},"avoid":"細かい音符まで穴に置き換えると紙の桟が細って切れ、巻き取りの途中で演奏そのものが破綻する","colors":["#e5e9e8","#7d715a","#1a1b18"],"motif":"notation","pair":["graphic-notation","katagami"],"study":["ヴェルテ・ミニョン","ガーシュウィン自身のロール","MIDIへの系譜"],"en":{"essence":"A recording medium of rolled paper on which the punched holes are the performance itself. It marks the turn from scores read by people to codes read by machines, and it is the ancestor of the punch card and the digital sequencer.","cues":["Rows of perforations","The scrolling roll","Machine-readable music","Performance physically recorded"],"works":["Exhibiting performance data as an object a machine visibly reads","Visualizing the structure of a piece on a scrolling time axis"],"recipe":{"type":"Hole length is duration and lateral position is pitch, never varied","layout":"Time runs with the take up, control holes pushed to both margins","material":"Paper moves with humidity, so leave reading tolerance between holes"},"avoid":"Punching every fine note thins the paper bridges until they tear, and the performance breaks down partway through the roll.","study":["the Welte-Mignon","Gershwin's own rolls","the lineage to MIDI"]},"links":{"page":"https://indexstyle.org/styles/player-piano-roll","json":"https://indexstyle.org/api/styles/player-piano-roll","designSpec":"https://indexstyle.org/styles/player-piano-roll/design.md","imagePrompt":"https://indexstyle.org/styles/player-piano-roll/prompt.txt"},"usage":{"license":"CC-BY-4.0","licenseName":"Creative Commons Attribution 4.0 International","licenseUrl":"https://creativecommons.org/licenses/by/4.0/","attribution":"IndexStyle — https://indexstyle.org","attributionUrl":"https://indexstyle.org","scope":"Original IndexStyle text and structured data. Reference images, quoted works, and third-party material are excluded and retain their own rights."}}