{"id":"spectrogram","no":425,"name":"Spectrogram","ja":"スペクトログラム","era":"1940s–","family":"図解表現","kind":"技法","collection":"Dictionary expansion 21","addedAt":"2026-08-18","source":{"title":"Cornell Lab — Macaulay Library","url":"https://www.macaulaylibrary.org/"},"reference":{"status":"verified","pageUrl":"https://www.macaulaylibrary.org/","credit":"Cornell Lab — Macaulay Library","gallery":[{"imageUrl":"https://commons.wikimedia.org/wiki/Special:FilePath/Hippolais%20polyglotta%20song%20spectrogram.png?width=640","pageUrl":"https://commons.wikimedia.org/wiki/File:Hippolais%20polyglotta%20song%20spectrogram.png","credit":"鳥のさえずりのスペクトログラム"},{"imageUrl":"https://commons.wikimedia.org/wiki/Special:FilePath/Mindoro%20bleeding-heart%20song%20sonogram.png?width=640","pageUrl":"https://commons.wikimedia.org/wiki/File:Mindoro%20bleeding-heart%20song%20sonogram.png","credit":"ソノグラム（CC BY-SA 4.0）"}]},"essence":"音を時間×周波数×強度の面に写す可視化。鳥の声の研究からDTMの画面まで、「音の形」を見る標準となり、そこに絵を隠すアーティストまで現れた。","cues":["時間×周波数の面","強度の濃淡","声紋のパターン","隠し絵の遊び"],"intents":["技術","静けさ","遊び"],"works":["一次資料と代表作から成立条件を比較する","別媒体へ応用できる構成原理を取り出す"],"recipe":{"type":"参照作品の文字・記号・スケールを観察する","layout":"視線と情報を支配する構造を一つ抽出する","material":"時代・地域・制作工程に固有の素材と挙動を確認する"},"avoid":"表面的な記号へ還元せず、時代・地域・技術・制作主体の文脈を確認する。","colors":["#e9e6dd","#67635d","#171615"],"motif":"notation","pair":["cymatics","photomicrography"],"study":["ベル研の声紋研究","鳥類学のソノグラム","エイフェックス・ツインの隠し絵"],"en":{"essence":"Sound mapped onto a plane of time, frequency and intensity. From birdsong research to the DAW screen, the standard way of seeing the shape of sound — complete with artists hiding pictures inside it.","cues":["The time-frequency plane","Intensity as shading","Voiceprint patterns","Hidden-image play"],"works":["Comparing primary sources and canonical works","Extracting principles that transfer to other media"],"recipe":{"type":"Observe the letters, signs and scale of reference works","layout":"Extract the one structure that governs gaze and information","material":"Verify the materials and behaviors specific to era, region and process"},"avoid":"Don't reduce it to surface signs. Verify the context of era, region, technology and makers.","study":["Bell Labs voiceprint research","ornithology's sonograms","Aphex Twin's hidden faces"]}}