{"id":"https://openalex.org/W2133093666","doi":"https://doi.org/10.1109/icassp.1981.1171156","title":"Nonstationary effects in adaptive filtering","display_name":"Nonstationary effects in adaptive filtering","publication_year":2005,"publication_date":"2005-03-24","ids":{"openalex":"https://openalex.org/W2133093666","doi":"https://doi.org/10.1109/icassp.1981.1171156","mag":"2133093666"},"language":"en","primary_location":{"id":"doi:10.1109/icassp.1981.1171156","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icassp.1981.1171156","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"ICASSP '81. 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/A5109905564","display_name":"L.J. Griffiths","orcid":null},"institutions":[{"id":"https://openalex.org/I188538660","display_name":"University of Colorado Boulder","ror":"https://ror.org/02ttsq026","country_code":"US","type":"education","lineage":["https://openalex.org/I188538660"]}],"countries":["US"],"is_corresponding":true,"raw_author_name":"L. Griffiths","raw_affiliation_strings":["Department of Electrical Engineering, University of Colorado, Boulder, CO, USA"],"affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering, University of Colorado, Boulder, CO, USA","institution_ids":["https://openalex.org/I188538660"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5021466785","display_name":"Donald H. Cooley","orcid":null},"institutions":[{"id":"https://openalex.org/I188538660","display_name":"University of Colorado Boulder","ror":"https://ror.org/02ttsq026","country_code":"US","type":"education","lineage":["https://openalex.org/I188538660"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"D. Cooley","raw_affiliation_strings":["Department of Electrical Engineering, University of Colorado, Boulder, CO, USA"],"affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering, University of Colorado, Boulder, CO, USA","institution_ids":["https://openalex.org/I188538660"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5109905564"],"corresponding_institution_ids":["https://openalex.org/I188538660"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.19941699,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"6","issue":null,"first_page":"522","last_page":"525"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11233","display_name":"Advanced Adaptive Filtering Techniques","score":1.0,"subfield":{"id":"https://openalex.org/subfields/2206","display_name":"Computational Mechanics"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11233","display_name":"Advanced Adaptive Filtering Techniques","score":1.0,"subfield":{"id":"https://openalex.org/subfields/2206","display_name":"Computational Mechanics"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10860","display_name":"Speech and Audio Processing","score":0.9997000098228455,"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/T11447","display_name":"Blind Source Separation Techniques","score":0.9993000030517578,"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/adaptive-filter","display_name":"Adaptive filter","score":0.5973783135414124},{"id":"https://openalex.org/keywords/filter","display_name":"Filter (signal processing)","score":0.5412009358406067},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.4770069420337677},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.45700040459632874},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.3703194558620453}],"concepts":[{"id":"https://openalex.org/C102248274","wikidata":"https://www.wikidata.org/wiki/Q168388","display_name":"Adaptive filter","level":2,"score":0.5973783135414124},{"id":"https://openalex.org/C106131492","wikidata":"https://www.wikidata.org/wiki/Q3072260","display_name":"Filter (signal processing)","level":2,"score":0.5412009358406067},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.4770069420337677},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.45700040459632874},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.3703194558620453},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/icassp.1981.1171156","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icassp.1981.1171156","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"ICASSP '81. IEEE International Conference on Acoustics, Speech, and Signal Processing","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.4699999988079071,"id":"https://metadata.un.org/sdg/7","display_name":"Affordable and clean energy"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":5,"referenced_works":["https://openalex.org/W1928606002","https://openalex.org/W2105662668","https://openalex.org/W2109189092","https://openalex.org/W2110075977","https://openalex.org/W2149350404"],"related_works":["https://openalex.org/W2748952813","https://openalex.org/W1979597421","https://openalex.org/W2007980826","https://openalex.org/W2061531152","https://openalex.org/W3002753104","https://openalex.org/W2077600819","https://openalex.org/W2142036596","https://openalex.org/W2072657027","https://openalex.org/W2600246793","https://openalex.org/W4238204885"],"abstract_inverted_index":{"Adaptive,":[0],"or":[1],"time-varying":[2],"filters":[3,92],"may":[4,76],"be":[5,78,133],"characterized":[6],"as":[7],"input-dependent":[8],"operators":[9],"in":[10,64,100],"which":[11],"the":[12,28,59,72,88,94,101,145],"dependence":[13],"extends":[14],"over":[15],"a":[16,127],"finite":[17],"interval":[18],"of":[19,36,51,90,104],"previous":[20,39],"inputs,":[21],"N":[22,43],"<inf":[23,44,110],"xmlns:mml=\"http://www.w3.org/1998/Math/MathML\"":[24,45,111],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">o</inf>":[25,46,112],".":[26,47,113],"Thus,":[27],"filter":[29,54],"coefficients":[30],"at":[31],"time":[32],"n":[33,41],"are":[34,116,130,141],"independent":[35],"all":[37],"inputs":[38],"to":[40,132,143],"-":[42],"The":[48],"simplest":[49],"example":[50],"an":[52],"adaptive":[53,91],"with":[55],"this":[56,81,84,119],"property":[57],"is":[58],"block":[60],"least-squares":[61,69],"approach":[62],"used":[63],"speech":[65],"processing.":[66],"Continually":[67],"varying":[68],"algorithms":[70],"and":[71,121],"LMS":[73],"algorithm,":[74],"however,":[75],"also":[77],"modelled":[79],"using":[80],"approach.":[82],"In":[83],"paper,":[85],"we":[86],"consider":[87],"performance":[89],"when":[93],"input":[95],"contains":[96],"significant":[97],"energy":[98],"components":[99],"frequency":[102],"range":[103],"0":[105],"<":[106,108],"f":[107],"1/N":[109],"Surprising":[114],"results":[115,124],"obtained":[117,125],"for":[118],"case":[120],"conventional":[122],"analytical":[123],"from":[126,137],"stationary":[128],"analysis":[129],"shown":[131],"inappropriate.":[134],"Examples":[135],"taken":[136],"magnetometer":[138],"data":[139],"processing":[140],"presented":[142],"illustrate":[144],"results.":[146]},"counts_by_year":[],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
