{"id":"https://openalex.org/W2104276955","doi":"https://doi.org/10.1109/icassp.2003.1202289","title":"Time-variant least squares harmonic modeling","display_name":"Time-variant least squares harmonic modeling","publication_year":2003,"publication_date":"2003-12-22","ids":{"openalex":"https://openalex.org/W2104276955","doi":"https://doi.org/10.1109/icassp.2003.1202289","mag":"2104276955"},"language":"en","primary_location":{"id":"doi:10.1109/icassp.2003.1202289","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icassp.2003.1202289","pdf_url":null,"source":{"id":"https://openalex.org/S4363608982","display_name":"2003 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03).","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":"2003 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03).","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/A5100438883","display_name":"Qin Li","orcid":"https://orcid.org/0000-0001-6393-3236"},"institutions":[{"id":"https://openalex.org/I201448701","display_name":"University of Washington","ror":"https://ror.org/00cvxb145","country_code":"US","type":"education","lineage":["https://openalex.org/I201448701"]}],"countries":["US"],"is_corresponding":true,"raw_author_name":"Qin Li","raw_affiliation_strings":["Department of Electrical Engineering, University of Washington, Seattle, WA, USA","Dept. of Electr. Eng., Univ. of Washington, Seattle, WA, USA#TAB#"],"affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering, University of Washington, Seattle, WA, USA","institution_ids":["https://openalex.org/I201448701"]},{"raw_affiliation_string":"Dept. of Electr. Eng., Univ. of Washington, Seattle, WA, USA#TAB#","institution_ids":["https://openalex.org/I201448701"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5019670377","display_name":"Les Atlas","orcid":"https://orcid.org/0009-0001-9979-5864"},"institutions":[{"id":"https://openalex.org/I201448701","display_name":"University of Washington","ror":"https://ror.org/00cvxb145","country_code":"US","type":"education","lineage":["https://openalex.org/I201448701"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"L. Atlas","raw_affiliation_strings":["Department of Electrical Engineering, University of Washington, Seattle, WA, USA","Dept. of Electr. Eng., Univ. of Washington, Seattle, WA, USA#TAB#"],"affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering, University of Washington, Seattle, WA, USA","institution_ids":["https://openalex.org/I201448701"]},{"raw_affiliation_string":"Dept. of Electr. Eng., Univ. of Washington, Seattle, WA, USA#TAB#","institution_ids":["https://openalex.org/I201448701"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5100438883"],"corresponding_institution_ids":["https://openalex.org/I201448701"],"apc_list":null,"apc_paid":null,"fwci":0.3887,"has_fulltext":false,"cited_by_count":8,"citation_normalized_percentile":{"value":0.53949329,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":96},"biblio":{"volume":"2","issue":null,"first_page":"II","last_page":"41"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10860","display_name":"Speech and Audio Processing","score":0.9998000264167786,"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":0.9998000264167786,"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":0.9990000128746033,"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/T11233","display_name":"Advanced Adaptive Filtering Techniques","score":0.9984999895095825,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/harmonic","display_name":"Harmonic","score":0.5638880729675293},{"id":"https://openalex.org/keywords/least-squares-function-approximation","display_name":"Least-squares function approximation","score":0.556269645690918},{"id":"https://openalex.org/keywords/polynomial","display_name":"Polynomial","score":0.5282092690467834},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.5205153822898865},{"id":"https://openalex.org/keywords/harmonic-analysis","display_name":"Harmonic analysis","score":0.5140393972396851},{"id":"https://openalex.org/keywords/computation","display_name":"Computation","score":0.5051925778388977},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.5006580352783203},{"id":"https://openalex.org/keywords/signal","display_name":"SIGNAL (programming language)","score":0.47231221199035645},{"id":"https://openalex.org/keywords/quadratic-equation","display_name":"Quadratic equation","score":0.4553010165691376},{"id":"https://openalex.org/keywords/linear-least-squares","display_name":"Linear least squares","score":0.44613343477249146},{"id":"https://openalex.org/keywords/total-least-squares","display_name":"Total least squares","score":0.4346790015697479},{"id":"https://openalex.org/keywords/applied-mathematics","display_name":"Applied mathematics","score":0.42629897594451904},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.3522690534591675},{"id":"https://openalex.org/keywords/singular-value-decomposition","display_name":"Singular value decomposition","score":0.3213830292224884},{"id":"https://openalex.org/keywords/mathematical-analysis","display_name":"Mathematical analysis","score":0.21762025356292725},{"id":"https://openalex.org/keywords/acoustics","display_name":"Acoustics","score":0.17603468894958496},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.17274650931358337},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.10958480834960938}],"concepts":[{"id":"https://openalex.org/C127934551","wikidata":"https://www.wikidata.org/wiki/Q1148098","display_name":"Harmonic","level":2,"score":0.5638880729675293},{"id":"https://openalex.org/C9936470","wikidata":"https://www.wikidata.org/wiki/Q6510405","display_name":"Least-squares function approximation","level":3,"score":0.556269645690918},{"id":"https://openalex.org/C90119067","wikidata":"https://www.wikidata.org/wiki/Q43260","display_name":"Polynomial","level":2,"score":0.5282092690467834},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.5205153822898865},{"id":"https://openalex.org/C131770355","wikidata":"https://www.wikidata.org/wiki/Q876215","display_name":"Harmonic analysis","level":2,"score":0.5140393972396851},{"id":"https://openalex.org/C45374587","wikidata":"https://www.wikidata.org/wiki/Q12525525","display_name":"Computation","level":2,"score":0.5051925778388977},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.5006580352783203},{"id":"https://openalex.org/C2779843651","wikidata":"https://www.wikidata.org/wiki/Q7390335","display_name":"SIGNAL (programming language)","level":2,"score":0.47231221199035645},{"id":"https://openalex.org/C129844170","wikidata":"https://www.wikidata.org/wiki/Q41299","display_name":"Quadratic equation","level":2,"score":0.4553010165691376},{"id":"https://openalex.org/C58663186","wikidata":"https://www.wikidata.org/wiki/Q6553462","display_name":"Linear least squares","level":3,"score":0.44613343477249146},{"id":"https://openalex.org/C169241690","wikidata":"https://www.wikidata.org/wiki/Q7828122","display_name":"Total least squares","level":3,"score":0.4346790015697479},{"id":"https://openalex.org/C28826006","wikidata":"https://www.wikidata.org/wiki/Q33521","display_name":"Applied mathematics","level":1,"score":0.42629897594451904},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.3522690534591675},{"id":"https://openalex.org/C22789450","wikidata":"https://www.wikidata.org/wiki/Q420904","display_name":"Singular value decomposition","level":2,"score":0.3213830292224884},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.21762025356292725},{"id":"https://openalex.org/C24890656","wikidata":"https://www.wikidata.org/wiki/Q82811","display_name":"Acoustics","level":1,"score":0.17603468894958496},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.17274650931358337},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.10958480834960938},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"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/C185429906","wikidata":"https://www.wikidata.org/wiki/Q1130160","display_name":"Estimator","level":2,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/icassp.2003.1202289","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icassp.2003.1202289","pdf_url":null,"source":{"id":"https://openalex.org/S4363608982","display_name":"2003 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03).","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":"2003 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03).","raw_type":"proceedings-article"},{"id":"pmh:ADA436659","is_oa":false,"landing_page_url":"http://oai.dtic.mil/oai/oai?&amp;verb=getRecord&amp;metadataPrefix=html&amp;identifier=ADA436659","pdf_url":null,"source":{"id":"https://openalex.org/S4406923043","display_name":"Defense Technical Information Center (DTIC)","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":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"DTIC AND NTIS","raw_type":"Text"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":8,"referenced_works":["https://openalex.org/W1496971974","https://openalex.org/W1765570596","https://openalex.org/W1982141955","https://openalex.org/W2100198142","https://openalex.org/W2102494813","https://openalex.org/W2108557628","https://openalex.org/W2152976395","https://openalex.org/W2164764235"],"related_works":["https://openalex.org/W2549446753","https://openalex.org/W1986698577","https://openalex.org/W4380487384","https://openalex.org/W1997267293","https://openalex.org/W1965270833","https://openalex.org/W2034819163","https://openalex.org/W2146954624","https://openalex.org/W2352116813","https://openalex.org/W2374560502","https://openalex.org/W2368345218"],"abstract_inverted_index":{"An":[0,60],"algorithm":[1],"for":[2],"harmonic":[3,14,20,81],"decomposition":[4],"of":[5,19,29,32,63,76],"time-variant":[6],"signals":[7],"is":[8,43,66,74],"derived":[9],"from":[10],"a":[11,30,46,54],"least":[12],"squares":[13],"(LSH)":[15],"technique.":[16],"The":[17],"estimates":[18],"amplitudes":[21],"and":[22,51,79,95],"phases":[23],"are":[24],"formulated":[25],"as":[26],"the":[27,40],"solution":[28],"set":[31],"linear":[33,47],"equations":[34],"which":[35],"minimizing":[36],"mean":[37],"square":[38],"error;":[39],"signal":[41,64],"frequency":[42,65],"modeled":[44],"by":[45],"or":[48],"quadratic":[49],"polynomial":[50,58],"obtained":[52],"via":[53],"local":[55],"search":[56],"over":[57],"coefficients.":[59],"initial":[61],"estimate":[62],"necessary":[67],"to":[68,90],"reduce":[69],"computation":[70],"time.":[71],"This":[72],"method":[73],"capable":[75],"producing":[77],"accurate":[78],"robust":[80],"estimation":[82],"in":[83],"low":[84],"SNR":[85],"situations.":[86],"We":[87],"show":[88],"applicability":[89],"high":[91],"accuracy":[92],"speech":[93],"pitch":[94],"heart":[96],"sound":[97],"beat":[98],"epoch":[99],"estimation.":[100]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":1},{"year":2015,"cited_by_count":1},{"year":2013,"cited_by_count":1},{"year":2012,"cited_by_count":2}],"updated_date":"2026-04-04T16:13:02.066488","created_date":"2025-10-10T00:00:00"}
