PC-NMF 技術、與聲音頻譜圖示意。圖│研之有物 (資料來源│T.-H. Lin, S.-H. Fang, and Y, Tsao, “Improving Biodiversity Assessment via Unsupervised Separation of Biological Sounds from Long-duration Recordings," Scientific Reports, volume 7, number 4547, pages 1, July 2017.)

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