{"id":"https://openalex.org/W3015842110","doi":"https://doi.org/10.1109/icassp40776.2020.9054141","title":"An Improved Solution to the Frequency-Invariant Beamforming with Concentric Circular Microphone Arrays","display_name":"An Improved Solution to the Frequency-Invariant Beamforming with Concentric Circular Microphone Arrays","publication_year":2020,"publication_date":"2020-04-09","ids":{"openalex":"https://openalex.org/W3015842110","doi":"https://doi.org/10.1109/icassp40776.2020.9054141","mag":"3015842110"},"language":"en","primary_location":{"id":"doi:10.1109/icassp40776.2020.9054141","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icassp40776.2020.9054141","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"ICASSP 2020 - 2020 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)","raw_type":"proceedings-article"},"type":"conference-paper","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/A5070398360","display_name":"Xudong Zhao","orcid":"https://orcid.org/0000-0002-9638-4875"},"institutions":[{"id":"https://openalex.org/I17145004","display_name":"Northwestern Polytechnical University","ror":"https://ror.org/01y0j0j86","country_code":"CN","type":"education","lineage":["https://openalex.org/I17145004"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Xudong Zhao","raw_affiliation_strings":["CIAIC, Northwestern Polytechnical University, Xi\u2019an, China","CIAIC, Northwestern Polytechnical University, Xi'an, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"CIAIC, Northwestern Polytechnical University, Xi\u2019an, China","institution_ids":["https://openalex.org/I17145004"]},{"raw_affiliation_string":"CIAIC, Northwestern Polytechnical University, Xi'an, China","institution_ids":["https://openalex.org/I17145004"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5034257180","display_name":"Gongping Huang","orcid":"https://orcid.org/0000-0002-6825-7473"},"institutions":[{"id":"https://openalex.org/I174306211","display_name":"Technion \u2013 Israel Institute of Technology","ror":"https://ror.org/03qryx823","country_code":"IL","type":"education","lineage":["https://openalex.org/I174306211"]}],"countries":["IL"],"is_corresponding":false,"raw_author_name":"Gongping Huang","raw_affiliation_strings":["Technion Israel Institute of Technology, Technion City, Israel"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Technion Israel Institute of Technology, Technion City, Israel","institution_ids":["https://openalex.org/I174306211"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5056129529","display_name":"Jingdong Chen","orcid":"https://orcid.org/0000-0003-0083-9247"},"institutions":[{"id":"https://openalex.org/I17145004","display_name":"Northwestern Polytechnical University","ror":"https://ror.org/01y0j0j86","country_code":"CN","type":"education","lineage":["https://openalex.org/I17145004"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Jingdong Chen","raw_affiliation_strings":["CIAIC, Northwestern Polytechnical University, Xi\u2019an, China","CIAIC, Northwestern Polytechnical University, Xi'an, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"CIAIC, Northwestern Polytechnical University, Xi\u2019an, China","institution_ids":["https://openalex.org/I17145004"]},{"raw_affiliation_string":"CIAIC, Northwestern Polytechnical University, Xi'an, China","institution_ids":["https://openalex.org/I17145004"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5071376063","display_name":"Jacob Benesty","orcid":"https://orcid.org/0000-0002-0036-5865"},"institutions":[{"id":"https://openalex.org/I159129438","display_name":"Universit\u00e9 du Qu\u00e9bec \u00e0 Montr\u00e9al","ror":"https://ror.org/002rjbv21","country_code":"CA","type":"education","lineage":["https://openalex.org/I159129438","https://openalex.org/I49663120"]},{"id":"https://openalex.org/I39481719","display_name":"Institut National de la Recherche Scientifique","ror":"https://ror.org/04td37d32","country_code":"CA","type":"education","lineage":["https://openalex.org/I39481719","https://openalex.org/I49663120"]}],"countries":["CA"],"is_corresponding":false,"raw_author_name":"Jacob Benesty","raw_affiliation_strings":["INRS-EMT, University of Quebec, Montreal, Canada"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"INRS-EMT, University of Quebec, Montreal, Canada","institution_ids":["https://openalex.org/I159129438","https://openalex.org/I39481719"]}]}],"institutions":[],"countries_distinct_count":3,"institutions_distinct_count":4,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.8216,"has_fulltext":false,"cited_by_count":9,"citation_normalized_percentile":{"value":0.70496005,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":94,"max":98},"biblio":{"volume":null,"issue":null,"first_page":"556","last_page":"560"},"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/T11233","display_name":"Advanced Adaptive Filtering Techniques","score":0.9926000237464905,"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/T10822","display_name":"Acoustic Wave Phenomena Research","score":0.9897000193595886,"subfield":{"id":"https://openalex.org/subfields/2204","display_name":"Biomedical Engineering"},"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/aliasing","display_name":"Aliasing","score":0.753868579864502},{"id":"https://openalex.org/keywords/beamforming","display_name":"Beamforming","score":0.7006289958953857},{"id":"https://openalex.org/keywords/microphone-array","display_name":"Microphone array","score":0.5936205387115479},{"id":"https://openalex.org/keywords/invariant","display_name":"Invariant (physics)","score":0.5549915432929993},{"id":"https://openalex.org/keywords/directivity","display_name":"Directivity","score":0.5145696997642517},{"id":"https://openalex.org/keywords/harmonics","display_name":"Harmonics","score":0.5085598230361938},{"id":"https://openalex.org/keywords/microphone","display_name":"Microphone","score":0.48016658425331116},{"id":"https://openalex.org/keywords/bessel-function","display_name":"Bessel function","score":0.4544813930988312},{"id":"https://openalex.org/keywords/phase-distortion","display_name":"Phase distortion","score":0.43583962321281433},{"id":"https://openalex.org/keywords/adaptive-beamformer","display_name":"Adaptive beamformer","score":0.42587757110595703},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.422759473323822},{"id":"https://openalex.org/keywords/acoustics","display_name":"Acoustics","score":0.3751436471939087},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.3334542512893677},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.33299657702445984},{"id":"https://openalex.org/keywords/filter","display_name":"Filter (signal processing)","score":0.2526293992996216},{"id":"https://openalex.org/keywords/mathematical-analysis","display_name":"Mathematical analysis","score":0.23506876826286316},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.15820470452308655},{"id":"https://openalex.org/keywords/loudspeaker","display_name":"Loudspeaker","score":0.11709585785865784},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.10522857308387756},{"id":"https://openalex.org/keywords/computer-vision","display_name":"Computer vision","score":0.08640840649604797}],"concepts":[{"id":"https://openalex.org/C4069607","wikidata":"https://www.wikidata.org/wiki/Q868732","display_name":"Aliasing","level":3,"score":0.753868579864502},{"id":"https://openalex.org/C54197355","wikidata":"https://www.wikidata.org/wiki/Q5782992","display_name":"Beamforming","level":2,"score":0.7006289958953857},{"id":"https://openalex.org/C2778806681","wikidata":"https://www.wikidata.org/wiki/Q907293","display_name":"Microphone array","level":4,"score":0.5936205387115479},{"id":"https://openalex.org/C190470478","wikidata":"https://www.wikidata.org/wiki/Q2370229","display_name":"Invariant (physics)","level":2,"score":0.5549915432929993},{"id":"https://openalex.org/C189039984","wikidata":"https://www.wikidata.org/wiki/Q8225412","display_name":"Directivity","level":3,"score":0.5145696997642517},{"id":"https://openalex.org/C188414643","wikidata":"https://www.wikidata.org/wiki/Q3001183","display_name":"Harmonics","level":3,"score":0.5085598230361938},{"id":"https://openalex.org/C2778263558","wikidata":"https://www.wikidata.org/wiki/Q46384","display_name":"Microphone","level":3,"score":0.48016658425331116},{"id":"https://openalex.org/C107706756","wikidata":"https://www.wikidata.org/wiki/Q219637","display_name":"Bessel function","level":2,"score":0.4544813930988312},{"id":"https://openalex.org/C57747864","wikidata":"https://www.wikidata.org/wiki/Q7180948","display_name":"Phase distortion","level":3,"score":0.43583962321281433},{"id":"https://openalex.org/C33378366","wikidata":"https://www.wikidata.org/wiki/Q4680719","display_name":"Adaptive beamformer","level":3,"score":0.42587757110595703},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.422759473323822},{"id":"https://openalex.org/C24890656","wikidata":"https://www.wikidata.org/wiki/Q82811","display_name":"Acoustics","level":1,"score":0.3751436471939087},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.3334542512893677},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.33299657702445984},{"id":"https://openalex.org/C106131492","wikidata":"https://www.wikidata.org/wiki/Q3072260","display_name":"Filter (signal processing)","level":2,"score":0.2526293992996216},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.23506876826286316},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.15820470452308655},{"id":"https://openalex.org/C157138929","wikidata":"https://www.wikidata.org/wiki/Q570","display_name":"Loudspeaker","level":2,"score":0.11709585785865784},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.10522857308387756},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.08640840649604797},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0},{"id":"https://openalex.org/C21822782","wikidata":"https://www.wikidata.org/wiki/Q131214","display_name":"Antenna (radio)","level":2,"score":0.0},{"id":"https://openalex.org/C165801399","wikidata":"https://www.wikidata.org/wiki/Q25428","display_name":"Voltage","level":2,"score":0.0},{"id":"https://openalex.org/C37914503","wikidata":"https://www.wikidata.org/wiki/Q156495","display_name":"Mathematical physics","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/icassp40776.2020.9054141","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icassp40776.2020.9054141","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"ICASSP 2020 - 2020 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)","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":21,"referenced_works":["https://openalex.org/W2012721840","https://openalex.org/W2022899627","https://openalex.org/W2023254078","https://openalex.org/W2027874658","https://openalex.org/W2039562452","https://openalex.org/W2105808261","https://openalex.org/W2108100421","https://openalex.org/W2155839023","https://openalex.org/W2161388130","https://openalex.org/W2173857413","https://openalex.org/W2213786401","https://openalex.org/W2499048335","https://openalex.org/W2499102192","https://openalex.org/W2600579021","https://openalex.org/W2616414642","https://openalex.org/W2762725952","https://openalex.org/W2801179766","https://openalex.org/W2888493610","https://openalex.org/W2889866417","https://openalex.org/W4239006079","https://openalex.org/W4300223101"],"related_works":["https://openalex.org/W2079738428","https://openalex.org/W1993813731","https://openalex.org/W2305431773","https://openalex.org/W2084804419","https://openalex.org/W1982764159","https://openalex.org/W2348931051","https://openalex.org/W2168445433","https://openalex.org/W3133250934","https://openalex.org/W2605486438","https://openalex.org/W1581296897"],"abstract_inverted_index":{"Frequency-invariant":[0],"beamforming":[1,56],"with":[2,24,51,57,96,110],"circular":[3,92],"microphone":[4],"arrays":[5],"(CMAs)":[6],"has":[7],"drawn":[8],"a":[9,111],"significant":[10],"amount":[11],"of":[12,39,115,151],"attention":[13],"for":[14],"its":[15],"steering":[16],"flexibility":[17],"and":[18,106,136],"high":[19,76],"directivity.":[20],"However,":[21],"frequency-invariant":[22,55],"beam-forming":[23,123],"CMAs":[25,45],"often":[26],"suffers":[27],"from":[28,69],"the":[29,37,40,61,64,84,101,108,116,122,129,132,137,144,149,152],"so-called":[30],"null":[31,62],"problem,":[32,63,98],"which":[33],"is":[34,66,88,125],"caused":[35,89,154],"by":[36,90,127,155],"zeros":[38],"Bessel":[41],"functions;":[42],"then,":[43],"concentric":[44],"(CCMAs)":[46],"are":[47],"used":[48],"to":[49,72],"deal":[50,95],"this":[52,79,97],"problem.":[53],"While":[54],"CCMAs":[58],"can":[59,147],"mitigate":[60,148],"beampattern":[65,109,153],"still":[67],"suffering":[68],"distortion":[70,150],"due":[71],"s-patial":[73],"aliasing":[74,86,102],"at":[75],"frequencies.":[77],"In":[78],"paper,":[80],"we":[81,99],"find":[82],"that":[83,143],"spatial":[85,156],"problem":[87],"higher-order":[91],"harmonics.":[93],"To":[94],"take":[100],"harmonics":[103],"into":[104],"account":[105],"approximate":[107],"higher":[112],"truncation":[113],"order":[114],"Jacobi-Anger":[117],"expansion":[118],"than":[119],"required.":[120],"Then,":[121],"filter":[124],"determined":[126],"minimizing":[128],"errors":[130],"between":[131],"desired":[133],"directivity":[134],"pattern":[135],"approximated":[138],"one.":[139],"Simulation":[140],"results":[141],"show":[142],"developed":[145],"method":[146],"aliasing.":[157]},"counts_by_year":[{"year":2024,"cited_by_count":4},{"year":2023,"cited_by_count":2},{"year":2021,"cited_by_count":3}],"updated_date":"2026-07-29T14:22:42.915294","created_date":"2025-10-10T00:00:00"}