{"id":"https://openalex.org/W2105183575","doi":"https://doi.org/10.1109/icassp.2002.5744981","title":"A conditional enhancement-layer quantizer for the scalable MPEG advanced Audio Coder","display_name":"A conditional enhancement-layer quantizer for the scalable MPEG advanced Audio Coder","publication_year":2002,"publication_date":"2002-05-01","ids":{"openalex":"https://openalex.org/W2105183575","doi":"https://doi.org/10.1109/icassp.2002.5744981","mag":"2105183575"},"language":"en","primary_location":{"id":"doi:10.1109/icassp.2002.5744981","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icassp.2002.5744981","pdf_url":null,"source":{"id":"https://openalex.org/S4363607879","display_name":"IEEE International Conference on Acoustics Speech and Signal Processing","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":"conference"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE International Conference on Acoustics Speech and Signal Processing","raw_type":"proceedings-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5033800352","display_name":"Ashish Aggarwal","orcid":"https://orcid.org/0000-0002-2838-7409"},"institutions":[{"id":"https://openalex.org/I154570441","display_name":"University of California, Santa Barbara","ror":"https://ror.org/02t274463","country_code":"US","type":"education","lineage":["https://openalex.org/I154570441"]}],"countries":["US"],"is_corresponding":true,"raw_author_name":"Ashish Aggarwal","raw_affiliation_strings":["Department of Electrical and Computer Engineering, University of California, Santa Barbara, CA, USA","Department of Electrical and Computer Engineering, University of California, Santa Barbara, 93106, USA"],"affiliations":[{"raw_affiliation_string":"Department of Electrical and Computer Engineering, University of California, Santa Barbara, CA, USA","institution_ids":["https://openalex.org/I154570441"]},{"raw_affiliation_string":"Department of Electrical and Computer Engineering, University of California, Santa Barbara, 93106, USA","institution_ids":["https://openalex.org/I154570441"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5026459097","display_name":"Kenneth Rose","orcid":"https://orcid.org/0000-0001-9463-2647"},"institutions":[{"id":"https://openalex.org/I154570441","display_name":"University of California, Santa Barbara","ror":"https://ror.org/02t274463","country_code":"US","type":"education","lineage":["https://openalex.org/I154570441"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Kenneth Rose","raw_affiliation_strings":["Department of Electrical and Computer Engineering, University of California, Santa Barbara, CA, USA","Department of Electrical and Computer Engineering, University of California, Santa Barbara, 93106, USA"],"affiliations":[{"raw_affiliation_string":"Department of Electrical and Computer Engineering, University of California, Santa Barbara, CA, USA","institution_ids":["https://openalex.org/I154570441"]},{"raw_affiliation_string":"Department of Electrical and Computer Engineering, University of California, Santa Barbara, 93106, USA","institution_ids":["https://openalex.org/I154570441"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5033800352"],"corresponding_institution_ids":["https://openalex.org/I154570441"],"apc_list":null,"apc_paid":null,"fwci":0.896,"has_fulltext":false,"cited_by_count":8,"citation_normalized_percentile":{"value":0.69512195,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":94},"biblio":{"volume":null,"issue":null,"first_page":"II","last_page":"1833"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10901","display_name":"Advanced Data Compression Techniques","score":0.9998999834060669,"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"}},"topics":[{"id":"https://openalex.org/T10901","display_name":"Advanced Data Compression Techniques","score":0.9998999834060669,"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/T10688","display_name":"Image and Signal Denoising Methods","score":0.9940999746322632,"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/T11034","display_name":"Digital Filter Design and Implementation","score":0.9937000274658203,"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/computer-science","display_name":"Computer science","score":0.6906925439834595},{"id":"https://openalex.org/keywords/scalability","display_name":"Scalability","score":0.6659225225448608},{"id":"https://openalex.org/keywords/quantization","display_name":"Quantization (signal processing)","score":0.6610735654830933},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.4960351884365082},{"id":"https://openalex.org/keywords/conditional-entropy","display_name":"Conditional entropy","score":0.4486885964870453},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.10935017466545105},{"id":"https://openalex.org/keywords/principle-of-maximum-entropy","display_name":"Principle of maximum entropy","score":0.08206745982170105}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6906925439834595},{"id":"https://openalex.org/C48044578","wikidata":"https://www.wikidata.org/wiki/Q727490","display_name":"Scalability","level":2,"score":0.6659225225448608},{"id":"https://openalex.org/C28855332","wikidata":"https://www.wikidata.org/wiki/Q198099","display_name":"Quantization (signal processing)","level":2,"score":0.6610735654830933},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.4960351884365082},{"id":"https://openalex.org/C101721835","wikidata":"https://www.wikidata.org/wiki/Q813908","display_name":"Conditional entropy","level":3,"score":0.4486885964870453},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.10935017466545105},{"id":"https://openalex.org/C9679016","wikidata":"https://www.wikidata.org/wiki/Q1417473","display_name":"Principle of maximum entropy","level":2,"score":0.08206745982170105},{"id":"https://openalex.org/C77088390","wikidata":"https://www.wikidata.org/wiki/Q8513","display_name":"Database","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/icassp.2002.5744981","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icassp.2002.5744981","pdf_url":null,"source":{"id":"https://openalex.org/S4363607879","display_name":"IEEE International Conference on Acoustics Speech and Signal Processing","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":"conference"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE International Conference on Acoustics Speech and Signal Processing","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[{"id":"https://openalex.org/F4320306076","display_name":"National Science Foundation","ror":"https://ror.org/021nxhr62"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":14,"referenced_works":["https://openalex.org/W1523644733","https://openalex.org/W1539971816","https://openalex.org/W1548612483","https://openalex.org/W1549739633","https://openalex.org/W1634005169","https://openalex.org/W1993210259","https://openalex.org/W2001968606","https://openalex.org/W2042927721","https://openalex.org/W2102618305","https://openalex.org/W2151912295","https://openalex.org/W2159180157","https://openalex.org/W6631257896","https://openalex.org/W6632337991","https://openalex.org/W6632870766"],"related_works":["https://openalex.org/W2748952813","https://openalex.org/W2051487156","https://openalex.org/W2073681303","https://openalex.org/W2390279801","https://openalex.org/W2358668433","https://openalex.org/W2376932109","https://openalex.org/W2001405890","https://openalex.org/W2389214306","https://openalex.org/W2382290278","https://openalex.org/W2478288626"],"abstract_inverted_index":{"We":[0,64],"propose":[1],"an":[2,67],"efficient":[3],"enhancement-layer":[4,28,68],"quantizer":[5,109,125],"which":[6,45,70],"considerably":[7],"improves":[8],"the":[9,14,23,27,31,38,74,82,92,96,106,123,127,146,165],"bit":[10,134],"rate":[11,135],"scalability":[12],"of":[13,26,153,169],"multi-layer":[15],"Advanced":[16],"Audio":[17],"Coder":[18],"(AAC).":[19],"The":[20],"scheme":[21],"exploits":[22],"statistical":[24],"dependence":[25],"signal":[29],"on":[30,41,73,119,164],"base-layer":[32,62,75,124],"quantization":[33,69],"parameters.":[34],"It":[35],"fundamentally":[36],"extends":[37],"prior":[39],"work":[40],"compander":[42],"domain":[43],"scalability,":[44],"was":[46],"shown":[47],"to":[48,58,85,159],"be":[49,78],"asymptotically":[50],"optimal":[51,107],"for":[52],"entropy":[53],"coded":[54],"uniform":[55],"scalar":[56],"quantizer,":[57],"systems":[59],"with":[60],"non-uniform":[61],"quantization.":[63],"show":[65,104],"that":[66,95,105],"is":[71,98,110],"conditional":[72,108],"information":[76],"can":[77],"efficiently":[79],"implemented":[80],"within":[81],"AAC":[83],"framework":[84],"achieve":[86],"major":[87,131],"performance":[88,157],"gains.":[89],"Moreover,":[90],"in":[91,133],"important":[93],"case":[94],"source":[97],"well":[99],"modeled":[100],"as":[101],"Laplacian,":[102],"we":[103],"implementable":[111],"by":[112],"only":[113],"two":[114],"distinct":[115],"switchable":[116],"quantizers":[117],"depending":[118],"whether":[120],"or":[121],"not":[122],"employed":[126],"\u201czero":[128],"dead-zone.\u201d":[129],"Hence,":[130],"savings":[132],"are":[136],"recouped":[137],"at":[138],"virtually":[139],"no":[140],"additional":[141],"computational":[142],"cost.":[143],"For":[144],"example,":[145],"proposed":[147],"four":[148],"layer":[149],"scalable":[150],"coder":[151,163],"consisting":[152],"16kbps":[154],"layers":[155],"achieves":[156],"close":[158],"a":[160],"60kbps":[161],"non-scalable":[162],"standard":[166],"test":[167],"database":[168],"44.1kHz":[170],"audio.":[171]},"counts_by_year":[{"year":2016,"cited_by_count":1},{"year":2014,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}