{"id":"https://openalex.org/W7125396698","doi":"https://doi.org/10.48550/arxiv.2601.14356","title":"Single-step Controllable Music Bandwidth Extension With Flow Matching","display_name":"Single-step Controllable Music Bandwidth Extension With Flow Matching","publication_year":2026,"publication_date":"2026-01-20","ids":{"openalex":"https://openalex.org/W7125396698","doi":"https://doi.org/10.48550/arxiv.2601.14356"},"language":null,"primary_location":{"id":"doi:10.48550/arxiv.2601.14356","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2601.14356","pdf_url":null,"source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"article"},"type":"preprint","indexed_in":["datacite"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://doi.org/10.48550/arxiv.2601.14356","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5048090174","display_name":"Carlos Hernandez-Olivan","orcid":"https://orcid.org/0000-0002-0235-2267"},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"Hernandez-Olivan, Carlos","raw_affiliation_strings":[],"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5089308804","display_name":"Hendrik Vincent Koops","orcid":"https://orcid.org/0000-0002-6980-7027"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Koops, Hendrik Vincent","raw_affiliation_strings":[],"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5072794436","display_name":"Hao Tan","orcid":"https://orcid.org/0000-0003-1153-2726"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Tan, Hao Hao","raw_affiliation_strings":[],"affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5051960947","display_name":"Elio Quinton","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Quinton, Elio","raw_affiliation_strings":[],"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5048090174"],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11309","display_name":"Music and Audio Processing","score":0.6247000098228455,"subfield":{"id":"https://openalex.org/subfields/1711","display_name":"Signal Processing"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11309","display_name":"Music and Audio Processing","score":0.6247000098228455,"subfield":{"id":"https://openalex.org/subfields/1711","display_name":"Signal Processing"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10860","display_name":"Speech and Audio Processing","score":0.1306000053882599,"subfield":{"id":"https://openalex.org/subfields/1711","display_name":"Signal Processing"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10775","display_name":"Generative Adversarial Networks and Image Synthesis","score":0.11029999703168869,"subfield":{"id":"https://openalex.org/subfields/1707","display_name":"Computer Vision and Pattern Recognition"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/bandwidth-extension","display_name":"Bandwidth extension","score":0.8460000157356262},{"id":"https://openalex.org/keywords/bandwidth","display_name":"Bandwidth (computing)","score":0.6470000147819519},{"id":"https://openalex.org/keywords/audio-signal","display_name":"Audio signal","score":0.6236000061035156},{"id":"https://openalex.org/keywords/extension","display_name":"Extension (predicate logic)","score":0.5849999785423279},{"id":"https://openalex.org/keywords/digital-audio","display_name":"Digital audio","score":0.51419997215271},{"id":"https://openalex.org/keywords/sound-quality","display_name":"Sound quality","score":0.4927000105381012},{"id":"https://openalex.org/keywords/feature","display_name":"Feature (linguistics)","score":0.41600000858306885},{"id":"https://openalex.org/keywords/signal","display_name":"SIGNAL (programming language)","score":0.4106000065803528},{"id":"https://openalex.org/keywords/audio-signal-processing","display_name":"Audio signal processing","score":0.3917999863624573}],"concepts":[{"id":"https://openalex.org/C9387945","wikidata":"https://www.wikidata.org/wiki/Q4854770","display_name":"Bandwidth extension","level":4,"score":0.8460000157356262},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6549000144004822},{"id":"https://openalex.org/C2776257435","wikidata":"https://www.wikidata.org/wiki/Q1576430","display_name":"Bandwidth (computing)","level":2,"score":0.6470000147819519},{"id":"https://openalex.org/C64922751","wikidata":"https://www.wikidata.org/wiki/Q4650799","display_name":"Audio signal","level":3,"score":0.6236000061035156},{"id":"https://openalex.org/C2778029271","wikidata":"https://www.wikidata.org/wiki/Q5421931","display_name":"Extension (predicate logic)","level":2,"score":0.5849999785423279},{"id":"https://openalex.org/C28490314","wikidata":"https://www.wikidata.org/wiki/Q189436","display_name":"Speech recognition","level":1,"score":0.5745000243186951},{"id":"https://openalex.org/C87687168","wikidata":"https://www.wikidata.org/wiki/Q173114","display_name":"Digital audio","level":4,"score":0.51419997215271},{"id":"https://openalex.org/C167310288","wikidata":"https://www.wikidata.org/wiki/Q7564808","display_name":"Sound quality","level":2,"score":0.4927000105381012},{"id":"https://openalex.org/C2776401178","wikidata":"https://www.wikidata.org/wiki/Q12050496","display_name":"Feature (linguistics)","level":2,"score":0.41600000858306885},{"id":"https://openalex.org/C2779843651","wikidata":"https://www.wikidata.org/wiki/Q7390335","display_name":"SIGNAL (programming language)","level":2,"score":0.4106000065803528},{"id":"https://openalex.org/C127220857","wikidata":"https://www.wikidata.org/wiki/Q2719318","display_name":"Audio signal processing","level":4,"score":0.3917999863624573},{"id":"https://openalex.org/C165064840","wikidata":"https://www.wikidata.org/wiki/Q1321061","display_name":"Matching (statistics)","level":2,"score":0.38339999318122864},{"id":"https://openalex.org/C167940747","wikidata":"https://www.wikidata.org/wiki/Q63727227","display_name":"Audio signal flow","level":5,"score":0.37779998779296875},{"id":"https://openalex.org/C160372630","wikidata":"https://www.wikidata.org/wiki/Q4819855","display_name":"Audio analyzer","level":5,"score":0.3718000054359436},{"id":"https://openalex.org/C167966045","wikidata":"https://www.wikidata.org/wiki/Q5532625","display_name":"Generative model","level":3,"score":0.35280001163482666},{"id":"https://openalex.org/C104267543","wikidata":"https://www.wikidata.org/wiki/Q208163","display_name":"Signal processing","level":3,"score":0.3521000146865845},{"id":"https://openalex.org/C26517878","wikidata":"https://www.wikidata.org/wiki/Q228039","display_name":"Key (lock)","level":2,"score":0.34049999713897705},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.3359000086784363},{"id":"https://openalex.org/C84462506","wikidata":"https://www.wikidata.org/wiki/Q173142","display_name":"Digital signal processing","level":2,"score":0.3224000036716461},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.3190000057220459},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.3181999921798706},{"id":"https://openalex.org/C45273575","wikidata":"https://www.wikidata.org/wiki/Q578970","display_name":"Spectrogram","level":2,"score":0.314300000667572},{"id":"https://openalex.org/C39890363","wikidata":"https://www.wikidata.org/wiki/Q36108","display_name":"Generative grammar","level":2,"score":0.30149999260902405},{"id":"https://openalex.org/C2779679103","wikidata":"https://www.wikidata.org/wiki/Q5251805","display_name":"Degradation (telecommunications)","level":2,"score":0.29910001158714294},{"id":"https://openalex.org/C128422554","wikidata":"https://www.wikidata.org/wiki/Q20077126","display_name":"Sound recording and reproduction","level":2,"score":0.28139999508857727},{"id":"https://openalex.org/C2780587432","wikidata":"https://www.wikidata.org/wiki/Q4291893","display_name":"Extension method","level":3,"score":0.2809999883174896},{"id":"https://openalex.org/C19275194","wikidata":"https://www.wikidata.org/wiki/Q222903","display_name":"Multiplexing","level":2,"score":0.2777000069618225},{"id":"https://openalex.org/C52773712","wikidata":"https://www.wikidata.org/wiki/Q175022","display_name":"Digital signal","level":3,"score":0.26179999113082886},{"id":"https://openalex.org/C2779530757","wikidata":"https://www.wikidata.org/wiki/Q1207505","display_name":"Quality (philosophy)","level":2,"score":0.2583000063896179},{"id":"https://openalex.org/C52622490","wikidata":"https://www.wikidata.org/wiki/Q1026626","display_name":"Feature extraction","level":2,"score":0.25440001487731934}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.48550/arxiv.2601.14356","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2601.14356","pdf_url":null,"source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":null,"raw_source_name":null,"raw_type":"article"}],"best_oa_location":{"id":"doi:10.48550/arxiv.2601.14356","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2601.14356","pdf_url":null,"source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"article"},"sustainable_development_goals":[{"score":0.7358630895614624,"id":"https://metadata.un.org/sdg/11","display_name":"Sustainable cities and communities"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":[],"abstract_inverted_index":{"Audio":[0],"restoration":[1,79],"consists":[2],"in":[3,28],"inverting":[4],"degradations":[5],"of":[6,33,38,102],"a":[7,44,93,112,132],"digital":[8],"audio":[9,62],"signal":[10,20,114],"to":[11,61,74,77,135],"recover":[12],"what":[13],"would":[14],"have":[15,48],"been":[16,49],"the":[17,22,72,75,106],"pristine":[18],"quality":[19],"before":[21],"degradation":[23],"occurred.":[24],"This":[25],"is":[26,131],"valuable":[27],"contexts":[29],"such":[30],"as":[31,111],"archives":[32],"music":[34],"recordings,":[35],"particularly":[36],"those":[37],"precious":[39],"historical":[40],"value,":[41],"for":[42,115],"which":[43],"clean":[45],"version":[46],"may":[47],"lost":[50],"or":[51],"simply":[52],"does":[53],"not":[54,83],"exist.":[55],"Recent":[56],"work":[57],"applied":[58],"generative":[59],"models":[60,89],"restoration,":[63],"showing":[64],"promising":[65,133],"improvement":[66],"over":[67],"previous":[68],"methods,":[69],"and":[70,104,127],"opening":[71],"door":[73],"ability":[76],"perform":[78],"operations":[80],"that":[81,129],"were":[82],"possible":[84],"before.":[85],"However,":[86],"making":[87],"these":[88],"finely":[90],"controllable":[91],"remains":[92],"challenge.":[94],"In":[95],"this":[96],"paper,":[97],"we":[98],"propose":[99],"an":[100],"extension":[101,117],"FLowHigh":[103],"introduce":[105],"Dynamic":[107],"Spectral":[108],"Contour":[109],"(DSC)":[110],"control":[113],"bandwidth":[116],"via":[118],"classifier-free":[119],"guidance.":[120],"Our":[121],"experiments":[122],"show":[123],"competitive":[124],"model":[125],"performance,":[126],"indicate":[128],"DSC":[130],"feature":[134],"support":[136],"fine-grained":[137],"conditioning.":[138]},"counts_by_year":[],"updated_date":"2026-01-23T23:24:52.574035","created_date":"2026-01-23T00:00:00"}
