{"id":"https://openalex.org/W1545031784","doi":"https://doi.org/10.21437/blizzard.2009-11","title":"The NICT Entry for the Blizzard Challenge 2009: an Enhanced HMM-based Speech Synthesis System with Trajectory Training considering Global Variance and State-Dependent Mixed Excitation","display_name":"The NICT Entry for the Blizzard Challenge 2009: an Enhanced HMM-based Speech Synthesis System with Trajectory Training considering Global Variance and State-Dependent Mixed Excitation","publication_year":2009,"publication_date":"2009-09-04","ids":{"openalex":"https://openalex.org/W1545031784","doi":"https://doi.org/10.21437/blizzard.2009-11","mag":"1545031784"},"language":"en","primary_location":{"id":"doi:10.21437/blizzard.2009-11","is_oa":false,"landing_page_url":"http://dx.doi.org/10.21437/blizzard.2009-11","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The Blizzard Challenge 2009","raw_type":"proceedings-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"http://hdl.handle.net/10061/7927","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5110289715","display_name":"Ranniery Maia","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Ranniery Maia","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5078330211","display_name":"Tomoki Toda","orcid":"https://orcid.org/0000-0001-8146-1279"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Tomoki Toda","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5110763152","display_name":"Shinsuke Sakai","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Shinsuke Sakai","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5109350986","display_name":"Yoshinori Shiga","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Yoshinori Shiga","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100888269","display_name":"Jinfu Ni","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Jinfu Ni","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5103146649","display_name":"Hisashi Kawai","orcid":"https://orcid.org/0000-0003-3789-4055"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Hisashi Kawai","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5103023678","display_name":"Keiichi Tokuda","orcid":"https://orcid.org/0000-0001-6143-0133"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Keiichi Tokuda","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5091599172","display_name":"Minoru Tsuzaki","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Minoru Tsuzaki","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5020994673","display_name":"Satoshi Nakamura","orcid":"https://orcid.org/0000-0001-6956-3803"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Satoshi Nakamura","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":9,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.453,"has_fulltext":true,"cited_by_count":2,"citation_normalized_percentile":{"value":0.7144333,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":94},"biblio":{"volume":null,"issue":null,"first_page":"71","last_page":"76"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10201","display_name":"Speech Recognition and Synthesis","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"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/T10201","display_name":"Speech Recognition and Synthesis","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"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":0.9965000152587891,"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/T12031","display_name":"Speech and dialogue systems","score":0.9951000213623047,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"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/naturalness","display_name":"Naturalness","score":0.8833007216453552},{"id":"https://openalex.org/keywords/hidden-markov-model","display_name":"Hidden Markov model","score":0.8465334177017212},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7339441180229187},{"id":"https://openalex.org/keywords/speech-recognition","display_name":"Speech recognition","score":0.6612468957901001},{"id":"https://openalex.org/keywords/residual","display_name":"Residual","score":0.611764132976532},{"id":"https://openalex.org/keywords/trajectory","display_name":"Trajectory","score":0.5375221967697144},{"id":"https://openalex.org/keywords/speech-synthesis","display_name":"Speech synthesis","score":0.5268220901489258},{"id":"https://openalex.org/keywords/intelligibility","display_name":"Intelligibility (philosophy)","score":0.5212798118591309},{"id":"https://openalex.org/keywords/variance","display_name":"Variance (accounting)","score":0.48696503043174744},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.1367875635623932}],"concepts":[{"id":"https://openalex.org/C134537474","wikidata":"https://www.wikidata.org/wiki/Q17144832","display_name":"Naturalness","level":2,"score":0.8833007216453552},{"id":"https://openalex.org/C23224414","wikidata":"https://www.wikidata.org/wiki/Q176769","display_name":"Hidden Markov model","level":2,"score":0.8465334177017212},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7339441180229187},{"id":"https://openalex.org/C28490314","wikidata":"https://www.wikidata.org/wiki/Q189436","display_name":"Speech recognition","level":1,"score":0.6612468957901001},{"id":"https://openalex.org/C155512373","wikidata":"https://www.wikidata.org/wiki/Q287450","display_name":"Residual","level":2,"score":0.611764132976532},{"id":"https://openalex.org/C13662910","wikidata":"https://www.wikidata.org/wiki/Q193139","display_name":"Trajectory","level":2,"score":0.5375221967697144},{"id":"https://openalex.org/C14999030","wikidata":"https://www.wikidata.org/wiki/Q16346","display_name":"Speech synthesis","level":2,"score":0.5268220901489258},{"id":"https://openalex.org/C60048801","wikidata":"https://www.wikidata.org/wiki/Q1433889","display_name":"Intelligibility (philosophy)","level":2,"score":0.5212798118591309},{"id":"https://openalex.org/C196083921","wikidata":"https://www.wikidata.org/wiki/Q7915758","display_name":"Variance (accounting)","level":2,"score":0.48696503043174744},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.1367875635623932},{"id":"https://openalex.org/C144133560","wikidata":"https://www.wikidata.org/wiki/Q4830453","display_name":"Business","level":0,"score":0.0},{"id":"https://openalex.org/C111472728","wikidata":"https://www.wikidata.org/wiki/Q9471","display_name":"Epistemology","level":1,"score":0.0},{"id":"https://openalex.org/C121955636","wikidata":"https://www.wikidata.org/wiki/Q4116214","display_name":"Accounting","level":1,"score":0.0},{"id":"https://openalex.org/C138885662","wikidata":"https://www.wikidata.org/wiki/Q5891","display_name":"Philosophy","level":0,"score":0.0},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","level":1,"score":0.0},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0}],"mesh":[],"locations_count":4,"locations":[{"id":"doi:10.21437/blizzard.2009-11","is_oa":false,"landing_page_url":"http://dx.doi.org/10.21437/blizzard.2009-11","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The Blizzard Challenge 2009","raw_type":"proceedings-article"},{"id":"pmh:oai:library.naist.jp:10061/7927","is_oa":true,"landing_page_url":"http://hdl.handle.net/10061/7927","pdf_url":"http://hdl.handle.net/10061/7927","source":{"id":"https://openalex.org/S4377196843","display_name":"NAIST Digital Library (Nara Institute of Science and Technology)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I75917431","host_organization_name":"Nara Institute of Science and Technology","host_organization_lineage":["https://openalex.org/I75917431"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Conference Paper"},{"id":"pmh:oai:CiteSeerX.psu:10.1.1.178.8846","is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.178.8846","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://www.festvox.org/blizzard/bc2009/nict_Blizzard2009.pdf","raw_type":"text"},{"id":"pmh:oai:irdb.nii.ac.jp:01146:0005782946","is_oa":true,"landing_page_url":"https://naist.repo.nii.ac.jp/records/4495","pdf_url":null,"source":{"id":"https://openalex.org/S7407056385","display_name":"Institutional Repositories DataBase (IRDB)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I184597095","host_organization_name":"National Institute of Informatics","host_organization_lineage":["https://openalex.org/I184597095"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-nc-nd","license_id":"https://openalex.org/licenses/cc-by-nc-nd","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"conference paper"}],"best_oa_location":{"id":"pmh:oai:library.naist.jp:10061/7927","is_oa":true,"landing_page_url":"http://hdl.handle.net/10061/7927","pdf_url":"http://hdl.handle.net/10061/7927","source":{"id":"https://openalex.org/S4377196843","display_name":"NAIST Digital Library (Nara Institute of Science and Technology)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I75917431","host_organization_name":"Nara Institute of Science and Technology","host_organization_lineage":["https://openalex.org/I75917431"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Conference Paper"},"sustainable_development_goals":[{"score":0.49000000953674316,"display_name":"Quality Education","id":"https://metadata.un.org/sdg/4"}],"awards":[],"funders":[],"has_content":{"pdf":true,"grobid_xml":false},"content_urls":{"pdf":"https://content.openalex.org/works/W1545031784.pdf"},"referenced_works_count":12,"referenced_works":["https://openalex.org/W1552079597","https://openalex.org/W1589634022","https://openalex.org/W1979449467","https://openalex.org/W2000513720","https://openalex.org/W2022554507","https://openalex.org/W2049686551","https://openalex.org/W2093450784","https://openalex.org/W2119929864","https://openalex.org/W2132119275","https://openalex.org/W2143490509","https://openalex.org/W2154920538","https://openalex.org/W2286166914"],"related_works":["https://openalex.org/W2079655441","https://openalex.org/W2912293245","https://openalex.org/W4252942110","https://openalex.org/W1604114751","https://openalex.org/W2032941915","https://openalex.org/W2075706796","https://openalex.org/W4391272374","https://openalex.org/W4403759994","https://openalex.org/W4400309480","https://openalex.org/W2081919107"],"abstract_inverted_index":{"This":[0],"paper":[1],"describes":[2],"the":[3,10,32,45,54,57,78],"NICT":[4],"speech":[5,34,71],"synthesis":[6],"system":[7,58],"submitted":[8],"to":[9,53,77],"Blizzard":[11],"Challenge":[12],"2009:":[13],"a":[14,35],"hidden":[15],"Markov":[16],"model":[17],"(HMM)-based":[18],"synthesizer":[19],"constructed":[20],"by":[21],"training":[22,46],"trajectory":[23],"HMMs":[24],"considering":[25],"global":[26],"variance.":[27],"To":[28],"improve":[29],"naturalness":[30,66],"of":[31,47,65],"synthesized":[33,70],"mixed":[36],"excitation":[37],"approach":[38],"based":[39],"on":[40],"closed-loop":[41],"residual":[42],"modeling":[43],"through":[44],"statedependent":[48],"filters":[49],"is":[50],"employed.":[51],"According":[52],"official":[55],"results":[56],"in":[59,63],"question":[60],"performs":[61],"well":[62],"terms":[64],"and":[67],"intelligibility":[68],"although":[69],"does":[72],"not":[73],"sound":[74],"very":[75],"similar":[76],"original":[79],"speaker.":[80]},"counts_by_year":[{"year":2014,"cited_by_count":1}],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-10-10T00:00:00"}
