{"id":"https://openalex.org/W2160828381","doi":"https://doi.org/10.1109/lsp.2009.2025982","title":"On the Study of Noise Allocation for Speech Signal in Low Bit-Rate Audio Coding","display_name":"On the Study of Noise Allocation for Speech Signal in Low Bit-Rate Audio Coding","publication_year":2009,"publication_date":"2009-06-25","ids":{"openalex":"https://openalex.org/W2160828381","doi":"https://doi.org/10.1109/lsp.2009.2025982","mag":"2160828381"},"language":"en","primary_location":{"id":"doi:10.1109/lsp.2009.2025982","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lsp.2009.2025982","pdf_url":null,"source":{"id":"https://openalex.org/S120629676","display_name":"IEEE Signal Processing Letters","issn_l":"1070-9908","issn":["1070-9908","1558-2361"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Signal Processing Letters","raw_type":"journal-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/A5029106220","display_name":"Chang-Heon Lee","orcid":null},"institutions":[{"id":"https://openalex.org/I193775966","display_name":"Yonsei University","ror":"https://ror.org/01wjejq96","country_code":"KR","type":"education","lineage":["https://openalex.org/I193775966"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Chang-Heon Lee","raw_affiliation_strings":["Department of Electrical and Electronic Engineering, Yonsei University, Seoul, South Korea","Dept of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electrical and Electronic Engineering, Yonsei University, Seoul, South Korea","institution_ids":["https://openalex.org/I193775966"]},{"raw_affiliation_string":"Dept of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea","institution_ids":["https://openalex.org/I193775966"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5017396920","display_name":"Hyen-O Oh","orcid":null},"institutions":[{"id":"https://openalex.org/I193775966","display_name":"Yonsei University","ror":"https://ror.org/01wjejq96","country_code":"KR","type":"education","lineage":["https://openalex.org/I193775966"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Hyen-O Oh","raw_affiliation_strings":["Department of Electrical and Electronic Engineering, Yonsei University, Seoul, South Korea"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electrical and Electronic Engineering, Yonsei University, Seoul, South Korea","institution_ids":["https://openalex.org/I193775966"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5101203935","display_name":"Hong-Goo Kang","orcid":null},"institutions":[{"id":"https://openalex.org/I4210131320","display_name":"LG (South Korea)","ror":"https://ror.org/03ddh2c27","country_code":"KR","type":"company","lineage":["https://openalex.org/I4210131320"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Hong-Goo Kang","raw_affiliation_strings":["Digital TV Laboratory, LG Electronics, Inc., Seoul, South Korea"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Digital TV Laboratory, LG Electronics, Inc., Seoul, South Korea","institution_ids":["https://openalex.org/I4210131320"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.20398906,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":94},"biblio":{"volume":"16","issue":"10","first_page":"849","last_page":"852"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10901","display_name":"Advanced Data Compression Techniques","score":0.9995999932289124,"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":0.9995999932289124,"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/T10860","display_name":"Speech and Audio Processing","score":0.9994999766349792,"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/T10688","display_name":"Image and Signal Denoising Methods","score":0.9975000023841858,"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/speech-coding","display_name":"Speech coding","score":0.7562513947486877},{"id":"https://openalex.org/keywords/speech-recognition","display_name":"Speech recognition","score":0.7328669428825378},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.711003303527832},{"id":"https://openalex.org/keywords/adaptive-multi-rate-audio-codec","display_name":"Adaptive Multi-Rate audio codec","score":0.5984355211257935},{"id":"https://openalex.org/keywords/harmonic-vector-excitation-coding","display_name":"Harmonic Vector Excitation Coding","score":0.538749098777771},{"id":"https://openalex.org/keywords/codec2","display_name":"Codec2","score":0.5278641581535339},{"id":"https://openalex.org/keywords/sub-band-coding","display_name":"Sub-band coding","score":0.5059491991996765},{"id":"https://openalex.org/keywords/linear-predictive-coding","display_name":"Linear predictive coding","score":0.47721773386001587},{"id":"https://openalex.org/keywords/sound-quality","display_name":"Sound quality","score":0.47440314292907715},{"id":"https://openalex.org/keywords/masking","display_name":"Masking (illustration)","score":0.4514361023902893},{"id":"https://openalex.org/keywords/codec","display_name":"Codec","score":0.44665947556495667},{"id":"https://openalex.org/keywords/quantization","display_name":"Quantization (signal processing)","score":0.4337003827095032},{"id":"https://openalex.org/keywords/speech-processing","display_name":"Speech processing","score":0.3544920086860657},{"id":"https://openalex.org/keywords/voice-activity-detection","display_name":"Voice activity detection","score":0.3412218391895294},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.2774618864059448},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.1601230800151825}],"concepts":[{"id":"https://openalex.org/C13895895","wikidata":"https://www.wikidata.org/wiki/Q3270773","display_name":"Speech coding","level":2,"score":0.7562513947486877},{"id":"https://openalex.org/C28490314","wikidata":"https://www.wikidata.org/wiki/Q189436","display_name":"Speech recognition","level":1,"score":0.7328669428825378},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.711003303527832},{"id":"https://openalex.org/C177067256","wikidata":"https://www.wikidata.org/wiki/Q4676210","display_name":"Adaptive Multi-Rate audio codec","level":4,"score":0.5984355211257935},{"id":"https://openalex.org/C80167644","wikidata":"https://www.wikidata.org/wiki/Q463990","display_name":"Harmonic Vector Excitation Coding","level":3,"score":0.538749098777771},{"id":"https://openalex.org/C75217168","wikidata":"https://www.wikidata.org/wiki/Q1105653","display_name":"Codec2","level":4,"score":0.5278641581535339},{"id":"https://openalex.org/C98526533","wikidata":"https://www.wikidata.org/wiki/Q1691938","display_name":"Sub-band coding","level":3,"score":0.5059491991996765},{"id":"https://openalex.org/C59883199","wikidata":"https://www.wikidata.org/wiki/Q1826438","display_name":"Linear predictive coding","level":3,"score":0.47721773386001587},{"id":"https://openalex.org/C167310288","wikidata":"https://www.wikidata.org/wiki/Q7564808","display_name":"Sound quality","level":2,"score":0.47440314292907715},{"id":"https://openalex.org/C2777402240","wikidata":"https://www.wikidata.org/wiki/Q6783436","display_name":"Masking (illustration)","level":2,"score":0.4514361023902893},{"id":"https://openalex.org/C161765866","wikidata":"https://www.wikidata.org/wiki/Q184748","display_name":"Codec","level":2,"score":0.44665947556495667},{"id":"https://openalex.org/C28855332","wikidata":"https://www.wikidata.org/wiki/Q198099","display_name":"Quantization (signal processing)","level":2,"score":0.4337003827095032},{"id":"https://openalex.org/C61328038","wikidata":"https://www.wikidata.org/wiki/Q3358061","display_name":"Speech processing","level":2,"score":0.3544920086860657},{"id":"https://openalex.org/C204201278","wikidata":"https://www.wikidata.org/wiki/Q1332614","display_name":"Voice activity detection","level":3,"score":0.3412218391895294},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.2774618864059448},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.1601230800151825},{"id":"https://openalex.org/C142362112","wikidata":"https://www.wikidata.org/wiki/Q735","display_name":"Art","level":0,"score":0.0},{"id":"https://openalex.org/C153349607","wikidata":"https://www.wikidata.org/wiki/Q36649","display_name":"Visual arts","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/lsp.2009.2025982","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lsp.2009.2025982","pdf_url":null,"source":{"id":"https://openalex.org/S120629676","display_name":"IEEE Signal Processing Letters","issn_l":"1070-9908","issn":["1070-9908","1558-2361"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Signal Processing Letters","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/16","display_name":"Peace, Justice and strong institutions","score":0.46000000834465027}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":17,"referenced_works":["https://openalex.org/W320808933","https://openalex.org/W1573855215","https://openalex.org/W1658344067","https://openalex.org/W1980698970","https://openalex.org/W2023552533","https://openalex.org/W2056215075","https://openalex.org/W2096588881","https://openalex.org/W2101904832","https://openalex.org/W2106757650","https://openalex.org/W2112179338","https://openalex.org/W2128301448","https://openalex.org/W2139862710","https://openalex.org/W2145961410","https://openalex.org/W2760715415","https://openalex.org/W2792298817","https://openalex.org/W4246413347","https://openalex.org/W6656559445"],"related_works":["https://openalex.org/W2060409740","https://openalex.org/W2159307410","https://openalex.org/W1551277881","https://openalex.org/W568589707","https://openalex.org/W154819394","https://openalex.org/W1544698548","https://openalex.org/W2127932871","https://openalex.org/W2174640871","https://openalex.org/W2115236569","https://openalex.org/W1560214705"],"abstract_inverted_index":{"This":[0],"letter":[1],"proposes":[2],"a":[3,52],"new":[4],"masking":[5,30,67],"threshold":[6,31,68],"adjustment":[7,58],"method":[8,145],"to":[9,36,81,91,113],"improve":[10],"the":[11,14,29,40,57,66,75,82,124,143,148,154,159],"quality":[12,116,152,165],"for":[13,39,55,117,153,166],"speech":[15,118,136,155],"signals":[16,157],"in":[17,106,128,134],"low":[18],"bit-rate":[19,161],"audio":[20,26],"coding.":[21],"The":[22,60,120],"Enhanced":[23],"aacPlus":[24],"(EAAC)":[25],"codec":[27],"increases":[28],"of":[32,69,78],"all":[33],"frequency":[34,71],"bands":[35],"be":[37],"suitable":[38],"given":[41],"encoding":[42],"rate":[43],"by":[44],"considering":[45],"equal":[46],"loudness":[47],"noises":[48,88],"only,":[49],"which":[50,110],"is":[51,104],"representative":[53],"way":[54],"implementing":[56],"technique.":[59],"proposed":[61,121,144],"method,":[62],"however,":[63],"dynamically":[64],"adjusts":[65],"each":[70,79],"band":[72,80,84],"based":[73],"on":[74,147],"energy":[76,98],"ratio":[77,99],"average":[83],"energy.":[85],"More":[86],"quantization":[87],"are":[89],"added":[90],"formant":[92],"regions":[93],"that":[94,142],"have":[95],"relatively":[96],"large":[97],"values,":[100],"but":[101],"less":[102],"distortion":[103],"allowed":[105],"spectral":[107,125],"valley":[108],"regions,":[109],"eventually":[111],"helps":[112],"enhance":[114],"perceptual":[115],"signals.":[119],"idea":[122],"reflects":[123],"weighting":[126],"criterion":[127],"searching":[129],"optimal":[130],"excitation":[131],"codebooks":[132],"used":[133],"many":[135],"coding":[137],"algorithms.":[138],"Simulation":[139],"results":[140],"confirm":[141],"implemented":[146],"EAAC":[149],"coder":[150],"improves":[151],"input":[156],"at":[158],"same":[160],"while":[162],"keeping":[163],"equivalent":[164],"music":[167],"contents.":[168]},"counts_by_year":[{"year":2024,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}