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For this reason, isolated tracks are not available to create the final mixture\/stream, and so the mixing process requires greater effort. Source separation methods are a potential solution to this problem. However, current algorithms are not fast enough to yield real-time separation in professional setups with dozens of microphones and sources. In this paper, we propose a fast approach consisting of a panning-based multichannel non-negative matrix factorization model to separate classical music. We tested the system on real professional recordings, where we were able to reach real-time with very low latency and promising quality.<\/jats:p>","DOI":"10.1007\/s11227-023-05192-5","type":"journal-article","created":{"date-parts":[[2023,4,6]],"date-time":"2023-04-06T17:02:42Z","timestamp":1680800562000},"page":"14342-14357","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["The music demixing machine: toward real-time remixing of classical music"],"prefix":"10.1007","volume":"79","author":[{"given":"Pablo","family":"Caba\u00f1as-Molero","sequence":"first","affiliation":[]},{"given":"Antonio J.","family":"Mu\u00f1oz-Montoro","sequence":"additional","affiliation":[]},{"given":"Pedro","family":"Vera-Candeas","sequence":"additional","affiliation":[]},{"given":"Jos\u00e9","family":"Ranilla","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2023,4,6]]},"reference":[{"issue":"41","key":"5192_CR1","doi-asserted-by":"publisher","first-page":"1667","DOI":"10.21105\/joss.01667","volume":"4","author":"FR St\u00f6ter","year":"2019","unstructured":"St\u00f6ter FR, Uhlich S, Liutkus A, Mitsufuji Y (2019) Open-unmix - a reference implementation for music source separation. 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