{"id":"https://openalex.org/W4405845498","doi":"https://doi.org/10.1109/apccas62602.2024.10808517","title":"A 250.3\u03bcW Versatile Sound Feature Extractor Using 1024-point FFT 64-ch LogMel Filter in 40nm CMOS","display_name":"A 250.3\u03bcW Versatile Sound Feature Extractor Using 1024-point FFT 64-ch LogMel Filter in 40nm CMOS","publication_year":2024,"publication_date":"2024-11-07","ids":{"openalex":"https://openalex.org/W4405845498","doi":"https://doi.org/10.1109/apccas62602.2024.10808517"},"language":"en","primary_location":{"id":"doi:10.1109/apccas62602.2024.10808517","is_oa":false,"landing_page_url":"https://doi.org/10.1109/apccas62602.2024.10808517","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2024 IEEE Asia Pacific Conference on Circuits and Systems (APCCAS)","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/A5115680396","display_name":"Akiho Kawada","orcid":null},"institutions":[{"id":"https://openalex.org/I74801974","display_name":"The University of Tokyo","ror":"https://ror.org/057zh3y96","country_code":"JP","type":"education","lineage":["https://openalex.org/I74801974"]}],"countries":["JP"],"is_corresponding":true,"raw_author_name":"Akiho Kawada","raw_affiliation_strings":["The University of Tokyo,School of Engineering,Tokyo,Japan"],"affiliations":[{"raw_affiliation_string":"The University of Tokyo,School of Engineering,Tokyo,Japan","institution_ids":["https://openalex.org/I74801974"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5087683697","display_name":"Kenji Kobayashi","orcid":"https://orcid.org/0000-0002-9312-7857"},"institutions":[{"id":"https://openalex.org/I74801974","display_name":"The University of Tokyo","ror":"https://ror.org/057zh3y96","country_code":"JP","type":"education","lineage":["https://openalex.org/I74801974"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Kenji Kobayashi","raw_affiliation_strings":["The University of Tokyo,Graduate School of Engineering,Tokyo,Japan"],"affiliations":[{"raw_affiliation_string":"The University of Tokyo,Graduate School of Engineering,Tokyo,Japan","institution_ids":["https://openalex.org/I74801974"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101129065","display_name":"Jaewon Shin","orcid":null},"institutions":[{"id":"https://openalex.org/I74801974","display_name":"The University of Tokyo","ror":"https://ror.org/057zh3y96","country_code":"JP","type":"education","lineage":["https://openalex.org/I74801974"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Jaewon Shin","raw_affiliation_strings":["The University of Tokyo,Graduate School of Engineering,Tokyo,Japan"],"affiliations":[{"raw_affiliation_string":"The University of Tokyo,Graduate School of Engineering,Tokyo,Japan","institution_ids":["https://openalex.org/I74801974"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5031310019","display_name":"Rei Sumikawa","orcid":"https://orcid.org/0000-0001-8589-5410"},"institutions":[{"id":"https://openalex.org/I74801974","display_name":"The University of Tokyo","ror":"https://ror.org/057zh3y96","country_code":"JP","type":"education","lineage":["https://openalex.org/I74801974"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Rei Sumikawa","raw_affiliation_strings":["The University of Tokyo,Graduate School of Engineering,Tokyo,Japan"],"affiliations":[{"raw_affiliation_string":"The University of Tokyo,Graduate School of Engineering,Tokyo,Japan","institution_ids":["https://openalex.org/I74801974"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5024554254","display_name":"Mototsugu Hamada","orcid":null},"institutions":[{"id":"https://openalex.org/I74801974","display_name":"The University of Tokyo","ror":"https://ror.org/057zh3y96","country_code":"JP","type":"education","lineage":["https://openalex.org/I74801974"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Mototsugu Hamada","raw_affiliation_strings":["The University of Tokyo,Graduate School of Engineering,Tokyo,Japan"],"affiliations":[{"raw_affiliation_string":"The University of Tokyo,Graduate School of Engineering,Tokyo,Japan","institution_ids":["https://openalex.org/I74801974"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5027271982","display_name":"Atsutake Kosuge","orcid":null},"institutions":[{"id":"https://openalex.org/I74801974","display_name":"The University of Tokyo","ror":"https://ror.org/057zh3y96","country_code":"JP","type":"education","lineage":["https://openalex.org/I74801974"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Atsutake Kosuge","raw_affiliation_strings":["The University of Tokyo,Graduate School of Engineering,Tokyo,Japan"],"affiliations":[{"raw_affiliation_string":"The University of Tokyo,Graduate School of Engineering,Tokyo,Japan","institution_ids":["https://openalex.org/I74801974"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":6,"corresponding_author_ids":["https://openalex.org/A5115680396"],"corresponding_institution_ids":["https://openalex.org/I74801974"],"apc_list":null,"apc_paid":null,"fwci":0.7501,"has_fulltext":false,"cited_by_count":2,"citation_normalized_percentile":{"value":0.72973552,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":95,"max":96},"biblio":{"volume":null,"issue":null,"first_page":"183","last_page":"187"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11309","display_name":"Music and Audio Processing","score":0.9901999831199646,"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":0.9901999831199646,"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":0.9847999811172485,"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/T11439","display_name":"Video Analysis and Summarization","score":0.9559000134468079,"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/extractor","display_name":"Extractor","score":0.7916998863220215},{"id":"https://openalex.org/keywords/fast-fourier-transform","display_name":"Fast Fourier transform","score":0.7117724418640137},{"id":"https://openalex.org/keywords/cmos","display_name":"CMOS","score":0.6844481825828552},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.5500093102455139},{"id":"https://openalex.org/keywords/filter","display_name":"Filter (signal processing)","score":0.5200426578521729},{"id":"https://openalex.org/keywords/feature","display_name":"Feature (linguistics)","score":0.47922971844673157},{"id":"https://openalex.org/keywords/point","display_name":"Point (geometry)","score":0.4429892301559448},{"id":"https://openalex.org/keywords/electronic-engineering","display_name":"Electronic engineering","score":0.3941877484321594},{"id":"https://openalex.org/keywords/computer-hardware","display_name":"Computer hardware","score":0.3692389130592346},{"id":"https://openalex.org/keywords/acoustics","display_name":"Acoustics","score":0.35769614577293396},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.22697100043296814},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.15669146180152893},{"id":"https://openalex.org/keywords/computer-vision","display_name":"Computer vision","score":0.13714560866355896},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.12997198104858398},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.11819329857826233}],"concepts":[{"id":"https://openalex.org/C117978034","wikidata":"https://www.wikidata.org/wiki/Q5422192","display_name":"Extractor","level":2,"score":0.7916998863220215},{"id":"https://openalex.org/C75172450","wikidata":"https://www.wikidata.org/wiki/Q623950","display_name":"Fast Fourier transform","level":2,"score":0.7117724418640137},{"id":"https://openalex.org/C46362747","wikidata":"https://www.wikidata.org/wiki/Q173431","display_name":"CMOS","level":2,"score":0.6844481825828552},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5500093102455139},{"id":"https://openalex.org/C106131492","wikidata":"https://www.wikidata.org/wiki/Q3072260","display_name":"Filter (signal processing)","level":2,"score":0.5200426578521729},{"id":"https://openalex.org/C2776401178","wikidata":"https://www.wikidata.org/wiki/Q12050496","display_name":"Feature (linguistics)","level":2,"score":0.47922971844673157},{"id":"https://openalex.org/C28719098","wikidata":"https://www.wikidata.org/wiki/Q44946","display_name":"Point (geometry)","level":2,"score":0.4429892301559448},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.3941877484321594},{"id":"https://openalex.org/C9390403","wikidata":"https://www.wikidata.org/wiki/Q3966","display_name":"Computer hardware","level":1,"score":0.3692389130592346},{"id":"https://openalex.org/C24890656","wikidata":"https://www.wikidata.org/wiki/Q82811","display_name":"Acoustics","level":1,"score":0.35769614577293396},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.22697100043296814},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.15669146180152893},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.13714560866355896},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.12997198104858398},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.11819329857826233},{"id":"https://openalex.org/C21880701","wikidata":"https://www.wikidata.org/wiki/Q2144042","display_name":"Process engineering","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/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.0},{"id":"https://openalex.org/C41895202","wikidata":"https://www.wikidata.org/wiki/Q8162","display_name":"Linguistics","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/apccas62602.2024.10808517","is_oa":false,"landing_page_url":"https://doi.org/10.1109/apccas62602.2024.10808517","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2024 IEEE Asia Pacific Conference on Circuits and Systems (APCCAS)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Affordable and clean energy","score":0.5299999713897705,"id":"https://metadata.un.org/sdg/7"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":8,"referenced_works":["https://openalex.org/W2086205576","https://openalex.org/W3094272606","https://openalex.org/W3157139198","https://openalex.org/W3201143670","https://openalex.org/W4289597973","https://openalex.org/W4385192610","https://openalex.org/W4388854020","https://openalex.org/W6640355072"],"related_works":["https://openalex.org/W3014521742","https://openalex.org/W3082848404","https://openalex.org/W1979583797","https://openalex.org/W4327521644","https://openalex.org/W3132558499","https://openalex.org/W2978884468","https://openalex.org/W2005846134","https://openalex.org/W2016864125","https://openalex.org/W2617868873","https://openalex.org/W2168413811"],"abstract_inverted_index":{"A":[0],"$250.3":[1],"\\mu":[2],"\\mathrm{~W}$":[3],"always-on":[4],"sound":[5,11,22,101],"feature":[6,36,81],"extractor":[7,82,193],"that":[8],"facilitates":[9],"general-purpose":[10],"recognition":[12,27,66,102,215],"AI":[13],"processing":[14,134],"encompassing":[15],"35":[16,105,211],"-word":[17,106,212],"voice":[18,107,213,235],"command":[19,108,214],"recognition,":[20,23],"environmental":[21],"and":[24,48,87,114,155,160,184,225],"musical":[25],"instrument":[26],"is":[28,61],"developed.":[29],"Conventionally,":[30],"approximated":[31],"melfrequency":[32],"cepstrum":[33],"coefficients":[34],"(MFCC)":[35],"extractors":[37],"composed":[38],"of":[39,43,100,171,176,198,233],"a":[40,78,84,97,145,174,187,195,204,210,218,226],"limited":[41],"number":[42,170,232],"FFT":[44,86,133],"samples":[45],"(256":[46],"points),":[47],"filter":[49,80,90,142],"channels":[50],"(10":[51],"channels)":[52],"are":[53,119],"utilized":[54],"for":[55,135,144,209],"energy":[56],"reduction;":[57],"however,":[58],"their":[59],"applicability":[60],"restricted":[62],"to":[63,167,238],"wake-up":[64],"word":[65,208],"resulting":[67],"in":[68,186,222,230],"high":[69],"NRE":[70],"costs.":[71],"To":[72,110],"overcome":[73],"these":[74],"challenges,":[75],"we":[76],"developed":[77],"LogMel":[79],"employing":[83],"1024-point":[85],"64-channel":[88],"Mel":[89,141],"bank,":[91],"which":[92,130],"enables":[93],"versatile":[94],"applications":[95],"across":[96],"diverse":[98],"range":[99],"tasks":[103],"including":[104],"recognition.":[109],"minimize":[111],"circuit":[112,136,150],"area":[113,137,151],"power":[115,196,223],"consumption,":[116],"three":[117],"techniques":[118],"employed:":[120],"(a)":[121],"radix-<sup":[122],"xmlns:mml=\"http://www.w3.org/1998/Math/MathML\"":[123],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">2</sup>":[124],"single-path":[125],"delay":[126],"feedback":[127],"($\\mathrm{R}^{2}$":[128],"SDF)":[129],"uses":[131],"serial":[132],"reduction,":[138],"(b)":[139],"zero-skipping":[140],"bank":[143],"$1":[146],"/":[147,201],"25":[148],"x$":[149],"reduction":[152],"by":[153,173],"storing":[154],"accumulating":[156],"only":[157],"nonzero":[158],"elements,":[159],"(c)":[161],"Log":[162],"LUT,":[163],"an":[164],"LUT":[165],"approximation":[166],"reduce":[168],"the":[169,180,191,231],"cycles":[172],"factor":[175],"20":[177],"compared":[178,237],"with":[179],"CORDIC":[181],"implementation.":[182],"Designed":[183],"implemented":[185],"40nm":[188],"CMOS":[189],"process,":[190],"proposed":[192],"demonstrates":[194],"efficiency":[197,224],"$14.9":[199],"\\mathrm{~nJ}":[200],"\\mathbf{f":[202],"r":[203],"m":[205],"e}":[206],"/$":[207],"task,":[216],"showcasing":[217],"$1.1":[219],"\\times$":[220,228],"improvement":[221],"$17.5":[227],"increase":[229],"recognizable":[234],"commands":[236],"state-of-the-art":[239],"KWS-specific":[240],"simplified":[241],"MFCC":[242],"audio":[243],"extraction":[244],"circuits.":[245]},"counts_by_year":[{"year":2025,"cited_by_count":2}],"updated_date":"2025-12-27T23:08:20.325037","created_date":"2025-10-10T00:00:00"}