{"id":"https://openalex.org/W2172106100","doi":"https://doi.org/10.1109/icassp.1981.1171305","title":"HQMF: Halfband quadrature mirror filters","display_name":"HQMF: Halfband quadrature mirror filters","publication_year":2005,"publication_date":"2005-03-24","ids":{"openalex":"https://openalex.org/W2172106100","doi":"https://doi.org/10.1109/icassp.1981.1171305","mag":"2172106100"},"language":"en","primary_location":{"id":"doi:10.1109/icassp.1981.1171305","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icassp.1981.1171305","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/A5086720313","display_name":"D. Esteban","orcid":null},"institutions":[{"id":"https://openalex.org/I1341412227","display_name":"IBM (United States)","ror":"https://ror.org/05hh8d621","country_code":"US","type":"company","lineage":["https://openalex.org/I1341412227"]}],"countries":["US"],"is_corresponding":true,"raw_author_name":"D. Esteban","raw_affiliation_strings":["IBM Laboratory, NC, USA"],"affiliations":[{"raw_affiliation_string":"IBM Laboratory, NC, USA","institution_ids":["https://openalex.org/I1341412227"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5010549832","display_name":"C. Galand","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"C. Galand","raw_affiliation_strings":["IBM Laboratory, La Gaude, France"],"affiliations":[{"raw_affiliation_string":"IBM Laboratory, La Gaude, France","institution_ids":[]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5086720313"],"corresponding_institution_ids":["https://openalex.org/I1341412227"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":2,"citation_normalized_percentile":{"value":0.26032483,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"6","issue":null,"first_page":"220","last_page":"223"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11034","display_name":"Digital Filter Design and Implementation","score":0.9944000244140625,"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/T11034","display_name":"Digital Filter Design and Implementation","score":0.9944000244140625,"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":0.9930999875068665,"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/T10901","display_name":"Advanced Data Compression Techniques","score":0.9549000263214111,"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/quadrature-mirror-filter","display_name":"Quadrature mirror filter","score":0.910041332244873},{"id":"https://openalex.org/keywords/quadrature","display_name":"Quadrature (astronomy)","score":0.7522628903388977},{"id":"https://openalex.org/keywords/finite-impulse-response","display_name":"Finite impulse response","score":0.6145790219306946},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.47875040769577026},{"id":"https://openalex.org/keywords/pole\u2013zero-plot","display_name":"Pole\u2013zero plot","score":0.4183327853679657},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.4004054069519043},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.3725205659866333},{"id":"https://openalex.org/keywords/filter","display_name":"Filter (signal processing)","score":0.36035647988319397},{"id":"https://openalex.org/keywords/electronic-engineering","display_name":"Electronic engineering","score":0.337729811668396},{"id":"https://openalex.org/keywords/prototype-filter","display_name":"Prototype filter","score":0.32487723231315613},{"id":"https://openalex.org/keywords/filter-design","display_name":"Filter design","score":0.2696605622768402},{"id":"https://openalex.org/keywords/transfer-function","display_name":"Transfer function","score":0.19519105553627014},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.18807992339134216},{"id":"https://openalex.org/keywords/computer-vision","display_name":"Computer vision","score":0.11674749851226807},{"id":"https://openalex.org/keywords/electrical-engineering","display_name":"Electrical engineering","score":0.08818408846855164}],"concepts":[{"id":"https://openalex.org/C64621657","wikidata":"https://www.wikidata.org/wiki/Q2699730","display_name":"Quadrature mirror filter","level":5,"score":0.910041332244873},{"id":"https://openalex.org/C62869609","wikidata":"https://www.wikidata.org/wiki/Q28137","display_name":"Quadrature (astronomy)","level":2,"score":0.7522628903388977},{"id":"https://openalex.org/C198386975","wikidata":"https://www.wikidata.org/wiki/Q117785","display_name":"Finite impulse response","level":2,"score":0.6145790219306946},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.47875040769577026},{"id":"https://openalex.org/C43656286","wikidata":"https://www.wikidata.org/wiki/Q2100961","display_name":"Pole\u2013zero plot","level":3,"score":0.4183327853679657},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.4004054069519043},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.3725205659866333},{"id":"https://openalex.org/C106131492","wikidata":"https://www.wikidata.org/wiki/Q3072260","display_name":"Filter (signal processing)","level":2,"score":0.36035647988319397},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.337729811668396},{"id":"https://openalex.org/C175742284","wikidata":"https://www.wikidata.org/wiki/Q1415537","display_name":"Prototype filter","level":4,"score":0.32487723231315613},{"id":"https://openalex.org/C22597639","wikidata":"https://www.wikidata.org/wiki/Q5449227","display_name":"Filter design","level":3,"score":0.2696605622768402},{"id":"https://openalex.org/C81299745","wikidata":"https://www.wikidata.org/wiki/Q334269","display_name":"Transfer function","level":2,"score":0.19519105553627014},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.18807992339134216},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.11674749851226807},{"id":"https://openalex.org/C119599485","wikidata":"https://www.wikidata.org/wiki/Q43035","display_name":"Electrical engineering","level":1,"score":0.08818408846855164}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/icassp.1981.1171305","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icassp.1981.1171305","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":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":6,"referenced_works":["https://openalex.org/W1602592328","https://openalex.org/W1690240707","https://openalex.org/W1777225744","https://openalex.org/W1929902256","https://openalex.org/W4285719527","https://openalex.org/W6639568366"],"related_works":["https://openalex.org/W2144702645","https://openalex.org/W2140445397","https://openalex.org/W2114806069","https://openalex.org/W26450519","https://openalex.org/W2166069046","https://openalex.org/W2138086495","https://openalex.org/W1912398726","https://openalex.org/W1965253386","https://openalex.org/W2110812129","https://openalex.org/W2515367351"],"abstract_inverted_index":{"In":[0,18,34,51],"this":[1,93],"paper,":[2,24,57],"a":[3,45],"Halfband":[4],"FIR":[5],"implementation":[6],"of":[7,22,38,55,59,61,69,83],"the":[8,19,23,25,35,39,41,52,56,62,74,81],"widely":[9],"used":[10],"Quadrature":[11,27],"Mirror":[12,28],"Filter":[13,29],"(QMF)":[14],"approach":[15],"is":[16,32,49,78,89],"described.":[17],"first":[20],"part":[21,37,54],"Half-band":[26],"(HQMF)":[30],"concept":[31],"introduced.":[33],"second":[36],"paper":[40],"HQMF":[42,63],"implementation,":[43],"assuming":[44],"tree":[46],"structure":[47],"approach,":[48],"discussed.":[50],"last":[53],"figures":[58],"merit":[60],"design":[64],"are":[65],"discussed":[66],"in":[67],"terms":[68],"processing":[70],"savings":[71],"compared":[72],"to":[73],"QMF":[75],"approach.":[76],"It":[77],"shown":[79],"that":[80],"number":[82],"multiplications":[84],"required":[85],"for":[86],"sub-band":[87],"splitting":[88],"almost":[90],"halved":[91],"through":[92],"concept.":[94]},"counts_by_year":[],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
