{"rewrite":{"id":"r_aa68b49c2abd8293a76ff99c","clusterId":"c_6c161cf014427a91e2a425d9","slug":"blush-measures-suno-decoder-imprint-in-generated-tracks","model":"deepseek-v4-1-flash","headline":"Blush Measures Suno Decoder Imprint In Generated Tracks","summary":"A new tool called Blush detects a high-frequency pattern left by Suno's decoder. The author found the same faint imprint in 36 of 40 Suno tracks and none of 42 human recordings or 53 Udio tracks from 2024. Blush measures the mark in time and frequency bands, follows it through mixing and processing, and reports which segments came from which source.","whyItMatters":"Blush points at the decoder artifact as the real detection target and reports mixed and processed tracks section by section, the two weak points the cited detection efforts say they have not solved.","webCardHtml":"\u003cp\u003eThe author built Blush after nearly three years of making songs with Suno and working on tools that correct human vocals. At that point the boundary between AI output and human performance inside a single file stops being obvious, even to the person who made it. The 60-millisecond high-band mark is described as a trait of the decoder family that assembles audio in 48kHz steps of 60 milliseconds, not a watermark Suno planted. The same shape appeared in another generator, YuE2. Blush splits a track into seven layers including high-band cutoff, noise floor, envelope modulation, stereo correlation and waveform repetition, and shows the numbers and figures behind each call.\u003c/p\u003e","blueskyPost":"Blush's decoder imprint appears in 36 of 40 Suno tracks and none of 42 human recordings. The tool follows the mark through mixing, so its report holds up after processing, not only on raw output.","twitterPost":"Blush found Suno's decoder imprint in 36 of 40 tracks and none of 42 human recordings, and it survives mixing.","threadsPost":"Blush's own data separates Suno from Udio cleanly: none of the 53 Udio tracks from 2024 carry the imprint. The tool follows the mark through mixing and processing, so a clean report depends on how much processing a track gets first.","newsletterBlurb":"A new detection tool called Blush looks for a faint high-frequency pattern that Suno's decoder leaves in its output. The author found it in 36 of 40 Suno tracks and none of 42 human recordings or 53 Udio tracks from 2024. Blush reports which segments of a mixed track came from which source, and shows the figures behind each call.","attributionJson":"[{\"source\":\"GameBusiness.jp\",\"url\":\"https://www.gamebusiness.jp/article/2026/10/31/28516.html\",\"title\":\"Sunoが使われた曲を見分けるツール「Blush」を作った（CloseBox）\"}]","lintFlagsJson":null,"lintHits":0,"costUsd":0,"inputTokens":6942,"outputTokens":721,"status":"published","repairAttempts":0,"nextRepairAt":null,"factsAttemptedAt":1793398152,"createdAt":"2026-10-30T22:03:50.000Z","publishedAt":"2026-10-30T22:08:09.000Z","updatedAt":"2026-10-30T22:08:09.000Z"},"cluster":{"id":"c_6c161cf014427a91e2a425d9","canonicalTitle":"Sunoが使われた曲を見分けるツール「Blush」を作った（CloseBox）","representativeArticleId":"a_8cc39bdd62c35668b6449769","sourceCount":1,"writtenSourceCount":1,"writeAttempts":0,"isSolo":true,"entitiesJson":"{\"anime_titles\":[],\"manga_titles\":[],\"work_titles\":[\"Blush\",\"Suno\"],\"studios\":[],\"people\":[],\"type\":\"news\",\"domain\":\"music\",\"is_roundup\":false}","contentType":"news","status":"published","firstSeenAt":"2026-10-30T21:30:03.000Z","lastSeenAt":"2026-10-30T21:30:03.000Z","updatedAt":"2026-10-30T22:08:10.000Z"},"attribution":[{"source":"GameBusiness.jp","url":"https://www.gamebusiness.jp/article/2026/10/31/28516.html","title":"Sunoが使われた曲を見分けるツール「Blush」を作った（CloseBox）"}],"entities":{"anime_titles":[],"manga_titles":[],"work_titles":["Blush","Suno"],"studios":[],"people":[],"type":"news","domain":"music","is_roundup":false},"keyFacts":null,"pageLinks":{"healthSlugs":["blush","suno"],"storySlugs":[],"entities":[{"slug":"blush","supported":0,"disputed":0,"contradicted":0,"unverified":1,"overall":"unverified","story_count":1,"has_dossier":true},{"slug":"suno","supported":1,"disputed":0,"contradicted":0,"unverified":10,"overall":"green","story_count":3,"has_dossier":true}],"stories":[],"entitiesOk":true,"storiesOk":true}}