{"id":"https://openalex.org/W1975677674","doi":"https://doi.org/10.1155/2009/468971","title":"An Overview of the Coding Standard MPEG-4 Audio Amendments 1 and 2: HE-AAC, SSC, and HE-AAC v2","display_name":"An Overview of the Coding Standard MPEG-4 Audio Amendments 1 and 2: HE-AAC, SSC, and HE-AAC v2","publication_year":2009,"publication_date":"2009-01-01","ids":{"openalex":"https://openalex.org/W1975677674","doi":"https://doi.org/10.1155/2009/468971","mag":"1975677674"},"language":"en","primary_location":{"id":"doi:10.1155/2009/468971","is_oa":true,"landing_page_url":"https://doi.org/10.1155/2009/468971","pdf_url":null,"source":{"id":"https://openalex.org/S19605986","display_name":"EURASIP Journal on Audio Speech and Music Processing","issn_l":"1687-4714","issn":["1687-4714","1687-4722"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310319965","host_organization_name":"Springer Nature","host_organization_lineage":["https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Nature"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"EURASIP Journal on Audio, Speech, and Music Processing","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://doi.org/10.1155/2009/468971","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5057623620","display_name":"Albertus C. den Brinker","orcid":"https://orcid.org/0000-0002-1679-7574"},"institutions":[{"id":"https://openalex.org/I1329325741","display_name":"Philips (Finland)","ror":"https://ror.org/01g4jev56","country_code":"FI","type":"company","lineage":["https://openalex.org/I1329325741","https://openalex.org/I4210122849"]}],"countries":["FI"],"is_corresponding":true,"raw_author_name":"A. C. den Brinker","raw_affiliation_strings":["Philips Research Laboratories, Eindhoven, The Netherlands 5656 AE#TAB#"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Philips Research Laboratories, Eindhoven, The Netherlands 5656 AE#TAB#","institution_ids":["https://openalex.org/I1329325741"]}]},{"author_position":"middle","author":{"id":null,"display_name":"J. Breebaart","orcid":null},"institutions":[{"id":"https://openalex.org/I1329325741","display_name":"Philips (Finland)","ror":"https://ror.org/01g4jev56","country_code":"FI","type":"company","lineage":["https://openalex.org/I1329325741","https://openalex.org/I4210122849"]}],"countries":["FI"],"is_corresponding":false,"raw_author_name":"J. Breebaart","raw_affiliation_strings":["Philips Research Laboratories, Eindhoven, The Netherlands 5656 AE#TAB#"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Philips Research Laboratories, Eindhoven, The Netherlands 5656 AE#TAB#","institution_ids":["https://openalex.org/I1329325741"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5076963590","display_name":"Per Ekstrand","orcid":null},"institutions":[{"id":"https://openalex.org/I4210093833","display_name":"Dolby (Sweden)","ror":"https://ror.org/00gqs6306","country_code":"SE","type":"company","lineage":["https://openalex.org/I4210093833","https://openalex.org/I4210093996"]}],"countries":["SE"],"is_corresponding":false,"raw_author_name":"P. Ekstrand","raw_affiliation_strings":["Dolby Sweden AB, Stockholm, Sweden 11330#TAB#"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Dolby Sweden AB, Stockholm, Sweden 11330#TAB#","institution_ids":["https://openalex.org/I4210093833"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5028943939","display_name":"Jonas Engdeg\u00e5rd","orcid":null},"institutions":[{"id":"https://openalex.org/I4210093833","display_name":"Dolby (Sweden)","ror":"https://ror.org/00gqs6306","country_code":"SE","type":"company","lineage":["https://openalex.org/I4210093833","https://openalex.org/I4210093996"]}],"countries":["SE"],"is_corresponding":false,"raw_author_name":"J. Engdeg\u00e5rd","raw_affiliation_strings":["Dolby Sweden AB, Stockholm, Sweden 11330#TAB#"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Dolby Sweden AB, Stockholm, Sweden 11330#TAB#","institution_ids":["https://openalex.org/I4210093833"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5048663941","display_name":"Fredrik Henn","orcid":null},"institutions":[{"id":"https://openalex.org/I4210093833","display_name":"Dolby (Sweden)","ror":"https://ror.org/00gqs6306","country_code":"SE","type":"company","lineage":["https://openalex.org/I4210093833","https://openalex.org/I4210093996"]}],"countries":["SE"],"is_corresponding":false,"raw_author_name":"F. Henn","raw_affiliation_strings":["Dolby Sweden AB, Stockholm, Sweden 11330#TAB#"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Dolby Sweden AB, Stockholm, Sweden 11330#TAB#","institution_ids":["https://openalex.org/I4210093833"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5007652852","display_name":"Kristofer Kj\u00f6rling","orcid":null},"institutions":[{"id":"https://openalex.org/I4210093833","display_name":"Dolby (Sweden)","ror":"https://ror.org/00gqs6306","country_code":"SE","type":"company","lineage":["https://openalex.org/I4210093833","https://openalex.org/I4210093996"]}],"countries":["SE"],"is_corresponding":false,"raw_author_name":"K. Kj\u00f6rling","raw_affiliation_strings":["Dolby Sweden AB, Stockholm, Sweden 11330#TAB#"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Dolby Sweden AB, Stockholm, Sweden 11330#TAB#","institution_ids":["https://openalex.org/I4210093833"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5081108123","display_name":"Werner Oomen","orcid":null},"institutions":[{"id":"https://openalex.org/I1329325741","display_name":"Philips (Finland)","ror":"https://ror.org/01g4jev56","country_code":"FI","type":"company","lineage":["https://openalex.org/I1329325741","https://openalex.org/I4210122849"]}],"countries":["FI"],"is_corresponding":false,"raw_author_name":"W. Oomen","raw_affiliation_strings":["Philips Applied Technologies Eindhoven, Eindhoven, The Netherlands 5656 AE#TAB#"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Philips Applied Technologies Eindhoven, Eindhoven, The Netherlands 5656 AE#TAB#","institution_ids":["https://openalex.org/I1329325741"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5076983861","display_name":"Heiko Purnhagen","orcid":null},"institutions":[{"id":"https://openalex.org/I4210093833","display_name":"Dolby (Sweden)","ror":"https://ror.org/00gqs6306","country_code":"SE","type":"company","lineage":["https://openalex.org/I4210093833","https://openalex.org/I4210093996"]}],"countries":["SE"],"is_corresponding":false,"raw_author_name":"H. Purnhagen","raw_affiliation_strings":["Dolby Sweden AB, Stockholm, Sweden 11330#TAB#"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Dolby Sweden AB, Stockholm, Sweden 11330#TAB#","institution_ids":["https://openalex.org/I4210093833"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":8,"corresponding_author_ids":["https://openalex.org/A5057623620"],"corresponding_institution_ids":["https://openalex.org/I1329325741"],"apc_list":{"value":1115,"currency":"GBP","value_usd":1367},"apc_paid":{"value":1115,"currency":"GBP","value_usd":1367},"fwci":0.714,"has_fulltext":false,"cited_by_count":17,"citation_normalized_percentile":{"value":0.66684336,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":98},"biblio":{"volume":"2009","issue":null,"first_page":"1","last_page":"21"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10860","display_name":"Speech and Audio Processing","score":0.9994000196456909,"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/T10860","display_name":"Speech and Audio Processing","score":0.9994000196456909,"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/T10901","display_name":"Advanced Data Compression Techniques","score":0.9986000061035156,"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"}},{"id":"https://openalex.org/T11309","display_name":"Music and Audio Processing","score":0.9983999729156494,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/standardization","display_name":"Standardization","score":0.8843420743942261},{"id":"https://openalex.org/keywords/coding","display_name":"Coding (social sciences)","score":0.6919880509376526},{"id":"https://openalex.org/keywords/active-listening","display_name":"Active listening","score":0.6728575825691223},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6023857593536377},{"id":"https://openalex.org/keywords/mpeg-4","display_name":"MPEG-4","score":0.602130115032196},{"id":"https://openalex.org/keywords/parametric-statistics","display_name":"Parametric statistics","score":0.5235604643821716},{"id":"https://openalex.org/keywords/speech-recognition","display_name":"Speech recognition","score":0.4385794997215271},{"id":"https://openalex.org/keywords/speech-coding","display_name":"Speech coding","score":0.43252187967300415},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.16882869601249695},{"id":"https://openalex.org/keywords/psychology","display_name":"Psychology","score":0.08217433094978333},{"id":"https://openalex.org/keywords/operating-system","display_name":"Operating system","score":0.07435065507888794},{"id":"https://openalex.org/keywords/communication","display_name":"Communication","score":0.07217472791671753},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.06312230229377747}],"concepts":[{"id":"https://openalex.org/C188087704","wikidata":"https://www.wikidata.org/wiki/Q369577","display_name":"Standardization","level":2,"score":0.8843420743942261},{"id":"https://openalex.org/C179518139","wikidata":"https://www.wikidata.org/wiki/Q5140297","display_name":"Coding (social sciences)","level":2,"score":0.6919880509376526},{"id":"https://openalex.org/C177291462","wikidata":"https://www.wikidata.org/wiki/Q423038","display_name":"Active listening","level":2,"score":0.6728575825691223},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6023857593536377},{"id":"https://openalex.org/C97501218","wikidata":"https://www.wikidata.org/wiki/Q219763","display_name":"MPEG-4","level":3,"score":0.602130115032196},{"id":"https://openalex.org/C117251300","wikidata":"https://www.wikidata.org/wiki/Q1849855","display_name":"Parametric statistics","level":2,"score":0.5235604643821716},{"id":"https://openalex.org/C28490314","wikidata":"https://www.wikidata.org/wiki/Q189436","display_name":"Speech recognition","level":1,"score":0.4385794997215271},{"id":"https://openalex.org/C13895895","wikidata":"https://www.wikidata.org/wiki/Q3270773","display_name":"Speech coding","level":2,"score":0.43252187967300415},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.16882869601249695},{"id":"https://openalex.org/C15744967","wikidata":"https://www.wikidata.org/wiki/Q9418","display_name":"Psychology","level":0,"score":0.08217433094978333},{"id":"https://openalex.org/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","level":1,"score":0.07435065507888794},{"id":"https://openalex.org/C46312422","wikidata":"https://www.wikidata.org/wiki/Q11024","display_name":"Communication","level":1,"score":0.07217472791671753},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.06312230229377747}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.1155/2009/468971","is_oa":true,"landing_page_url":"https://doi.org/10.1155/2009/468971","pdf_url":null,"source":{"id":"https://openalex.org/S19605986","display_name":"EURASIP Journal on Audio Speech and Music Processing","issn_l":"1687-4714","issn":["1687-4714","1687-4722"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310319965","host_organization_name":"Springer Nature","host_organization_lineage":["https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Nature"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"EURASIP Journal on Audio, Speech, and Music Processing","raw_type":"journal-article"},{"id":"pmh:oai:doaj.org/article:40f5c845ae794d7f89ed2e73c8a1bce5","is_oa":true,"landing_page_url":"https://doaj.org/article/40f5c845ae794d7f89ed2e73c8a1bce5","pdf_url":null,"source":{"id":"https://openalex.org/S4306401280","display_name":"DOAJ (DOAJ: Directory of Open Access Journals)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"EURASIP Journal on Audio, Speech, and Music Processing, Vol 2009, Iss 1, p 468971 (2009)","raw_type":"article"},{"id":"pmh:oai:doaj.org/article:79eedeb9dedb4116afe46f8792e1d7e4","is_oa":true,"landing_page_url":"https://doaj.org/article/79eedeb9dedb4116afe46f8792e1d7e4","pdf_url":null,"source":{"id":"https://openalex.org/S4306401280","display_name":"DOAJ (DOAJ: Directory of Open Access Journals)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"EURASIP Journal on Audio, Speech, and Music Processing, Vol 2009 (2009)","raw_type":"article"}],"best_oa_location":{"id":"doi:10.1155/2009/468971","is_oa":true,"landing_page_url":"https://doi.org/10.1155/2009/468971","pdf_url":null,"source":{"id":"https://openalex.org/S19605986","display_name":"EURASIP Journal on Audio Speech and Music Processing","issn_l":"1687-4714","issn":["1687-4714","1687-4722"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310319965","host_organization_name":"Springer Nature","host_organization_lineage":["https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Nature"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"EURASIP Journal on Audio, Speech, and Music Processing","raw_type":"journal-article"},"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":48,"referenced_works":["https://openalex.org/W300058490","https://openalex.org/W429587937","https://openalex.org/W597404779","https://openalex.org/W1491742974","https://openalex.org/W1492489865","https://openalex.org/W1493607906","https://openalex.org/W1509464777","https://openalex.org/W1509680449","https://openalex.org/W1511801606","https://openalex.org/W1534046686","https://openalex.org/W1557653219","https://openalex.org/W1570910243","https://openalex.org/W1578316451","https://openalex.org/W1594680456","https://openalex.org/W1595724910","https://openalex.org/W1597752450","https://openalex.org/W1599240242","https://openalex.org/W1667440604","https://openalex.org/W1861683848","https://openalex.org/W1975753575","https://openalex.org/W2006963707","https://openalex.org/W2013020033","https://openalex.org/W2088432713","https://openalex.org/W2128301448","https://openalex.org/W2135592817","https://openalex.org/W2135934764","https://openalex.org/W2140020944","https://openalex.org/W2140188101","https://openalex.org/W2141532435","https://openalex.org/W2142566349","https://openalex.org/W2144517500","https://openalex.org/W2147676440","https://openalex.org/W2148371116","https://openalex.org/W2158129573","https://openalex.org/W2162285589","https://openalex.org/W2164764235","https://openalex.org/W2167341025","https://openalex.org/W2169166548","https://openalex.org/W2243241196","https://openalex.org/W2247826014","https://openalex.org/W2308367698","https://openalex.org/W2413283319","https://openalex.org/W2624277984","https://openalex.org/W2753047228","https://openalex.org/W2781675447","https://openalex.org/W2979265762","https://openalex.org/W4231839776","https://openalex.org/W4285719527"],"related_works":["https://openalex.org/W2378767206","https://openalex.org/W1540871478","https://openalex.org/W328308450","https://openalex.org/W282641168","https://openalex.org/W2376963063","https://openalex.org/W243893405","https://openalex.org/W2358898662","https://openalex.org/W2107716822","https://openalex.org/W2515366312","https://openalex.org/W1940425952"],"abstract_inverted_index":{"<p/>":[0],"In":[1,38],"2003":[2],"and":[3,25,34,53],"2004,":[4],"the":[5,47,60,68,72,82],"ISO/IEC":[6],"MPEG":[7],"standardization":[8,74],"committee":[9],"added":[10],"two":[11],"amendments":[12,20],"to":[13,55,80],"their":[14],"MPEG-4":[15,73],"audio":[16],"coding":[17,23],"standard.":[18],"These":[19],"concern":[21],"parametric":[22],"techniques":[24,52],"encompass":[26],"Spectral":[27],"Band":[28],"Replication":[29],"(SBR),":[30],"Sinusoidal":[31],"Coding":[32],"(SSC),":[33],"Parametric":[35],"Stereo":[36],"(PS).":[37],"this":[39],"paper,":[40],"we":[41],"will":[42],"give":[43],"an":[44],"overview":[45],"of":[46,62,71,84],"basic":[48],"ideas":[49],"behind":[50],"these":[51,85],"references":[54],"more":[56],"detailed":[57],"information.":[58],"Furthermore,":[59],"results":[61],"listening":[63],"tests":[64],"as":[65],"performed":[66],"during":[67],"final":[69],"stages":[70],"process":[75],"are":[76],"presented":[77],"in":[78],"order":[79],"illustrate":[81],"performance":[83],"techniques.":[86]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":1},{"year":2023,"cited_by_count":1},{"year":2022,"cited_by_count":1},{"year":2021,"cited_by_count":3},{"year":2019,"cited_by_count":1},{"year":2017,"cited_by_count":1},{"year":2016,"cited_by_count":1},{"year":2015,"cited_by_count":2},{"year":2013,"cited_by_count":2},{"year":2012,"cited_by_count":1}],"updated_date":"2026-05-06T08:25:59.206177","created_date":"2025-10-10T00:00:00"}