{"id":"https://openalex.org/W2107804602","doi":"https://doi.org/10.1109/icassp.2011.5946490","title":"An adaptive approach to abnormal heart sound segmentation","display_name":"An adaptive approach to abnormal heart sound segmentation","publication_year":2011,"publication_date":"2011-05-01","ids":{"openalex":"https://openalex.org/W2107804602","doi":"https://doi.org/10.1109/icassp.2011.5946490","mag":"2107804602"},"language":"en","primary_location":{"id":"doi:10.1109/icassp.2011.5946490","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icassp.2011.5946490","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2011 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/A5100328491","display_name":"Dinesh Kumar","orcid":"https://orcid.org/0000-0003-3602-4023"},"institutions":[{"id":"https://openalex.org/I76903346","display_name":"University of Coimbra","ror":"https://ror.org/04z8k9a98","country_code":"PT","type":"education","lineage":["https://openalex.org/I76903346"]}],"countries":["PT"],"is_corresponding":false,"raw_author_name":"D. Kumar","raw_affiliation_strings":["Centre of Informatics and Systems, University of Coimbra, Coimbra, Portugal","Centre for Informatics and Systems, University of Coimbra, Portugal#TAB#"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Centre of Informatics and Systems, University of Coimbra, Coimbra, Portugal","institution_ids":["https://openalex.org/I76903346"]},{"raw_affiliation_string":"Centre for Informatics and Systems, University of Coimbra, Portugal#TAB#","institution_ids":["https://openalex.org/I76903346"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5083637401","display_name":"P. Carvalho","orcid":"https://orcid.org/0000-0002-9847-0590"},"institutions":[{"id":"https://openalex.org/I76903346","display_name":"University of Coimbra","ror":"https://ror.org/04z8k9a98","country_code":"PT","type":"education","lineage":["https://openalex.org/I76903346"]}],"countries":["PT"],"is_corresponding":false,"raw_author_name":"P. Carvalho","raw_affiliation_strings":["Centre of Informatics and Systems, University of Coimbra, Coimbra, Portugal","Centre for Informatics and Systems, University of Coimbra, Portugal#TAB#"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Centre of Informatics and Systems, University of Coimbra, Coimbra, Portugal","institution_ids":["https://openalex.org/I76903346"]},{"raw_affiliation_string":"Centre for Informatics and Systems, University of Coimbra, Portugal#TAB#","institution_ids":["https://openalex.org/I76903346"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5015602578","display_name":"Michel Antunes","orcid":"https://orcid.org/0000-0001-6115-5186"},"institutions":[{"id":"https://openalex.org/I76903346","display_name":"University of Coimbra","ror":"https://ror.org/04z8k9a98","country_code":"PT","type":"education","lineage":["https://openalex.org/I76903346"]}],"countries":["PT"],"is_corresponding":false,"raw_author_name":"M. Antunes","raw_affiliation_strings":["Centre of Cardio-thoracic Surgery, University Hospital of Coimbra, Coimbra, Portugal","Centre for Informatics and Systems, University of Coimbra, Portugal#TAB#"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Centre of Cardio-thoracic Surgery, University Hospital of Coimbra, Coimbra, Portugal","institution_ids":["https://openalex.org/I76903346"]},{"raw_affiliation_string":"Centre for Informatics and Systems, University of Coimbra, Portugal#TAB#","institution_ids":["https://openalex.org/I76903346"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5038315186","display_name":"Rui Pedro Paiva","orcid":"https://orcid.org/0000-0003-3215-3960"},"institutions":[{"id":"https://openalex.org/I76903346","display_name":"University of Coimbra","ror":"https://ror.org/04z8k9a98","country_code":"PT","type":"education","lineage":["https://openalex.org/I76903346"]}],"countries":["PT"],"is_corresponding":false,"raw_author_name":"R. P. Paiva","raw_affiliation_strings":["Centre of Informatics and Systems, University of Coimbra, Coimbra, Portugal","Centre for Informatics and Systems, University of Coimbra, Portugal#TAB#"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Centre of Informatics and Systems, University of Coimbra, Coimbra, Portugal","institution_ids":["https://openalex.org/I76903346"]},{"raw_affiliation_string":"Centre for Informatics and Systems, University of Coimbra, Portugal#TAB#","institution_ids":["https://openalex.org/I76903346"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5083997342","display_name":"J. Henriques","orcid":"https://orcid.org/0000-0003-4622-474X"},"institutions":[{"id":"https://openalex.org/I76903346","display_name":"University of Coimbra","ror":"https://ror.org/04z8k9a98","country_code":"PT","type":"education","lineage":["https://openalex.org/I76903346"]}],"countries":["PT"],"is_corresponding":false,"raw_author_name":"J. Henriques","raw_affiliation_strings":["Centre of Informatics and Systems, University of Coimbra, Coimbra, Portugal","Centre for Informatics and Systems, University of Coimbra, Portugal#TAB#"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Centre of Informatics and Systems, University of Coimbra, Coimbra, Portugal","institution_ids":["https://openalex.org/I76903346"]},{"raw_affiliation_string":"Centre for Informatics and Systems, University of Coimbra, Portugal#TAB#","institution_ids":["https://openalex.org/I76903346"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I76903346"],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":9,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":"7","issue":null,"first_page":"661","last_page":"664"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12419","display_name":"Phonocardiography and Auscultation Techniques","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/2740","display_name":"Pulmonary and Respiratory Medicine"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},"topics":[{"id":"https://openalex.org/T12419","display_name":"Phonocardiography and Auscultation Techniques","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/2740","display_name":"Pulmonary and Respiratory Medicine"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T11309","display_name":"Music and Audio Processing","score":0.9635999798774719,"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/thresholding","display_name":"Thresholding","score":0.7559230327606201},{"id":"https://openalex.org/keywords/segmentation","display_name":"Segmentation","score":0.7208377122879028},{"id":"https://openalex.org/keywords/simplicity","display_name":"Simplicity","score":0.6655933260917664},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6353632211685181},{"id":"https://openalex.org/keywords/sound","display_name":"Sound (geography)","score":0.6157367825508118},{"id":"https://openalex.org/keywords/heart-sounds","display_name":"Heart sounds","score":0.5998029112815857},{"id":"https://openalex.org/keywords/wavelet","display_name":"Wavelet","score":0.5932072997093201},{"id":"https://openalex.org/keywords/signal","display_name":"SIGNAL (programming language)","score":0.5461257100105286},{"id":"https://openalex.org/keywords/frequency-domain","display_name":"Frequency domain","score":0.5191959142684937},{"id":"https://openalex.org/keywords/sound-analysis","display_name":"Sound analysis","score":0.5170220136642456},{"id":"https://openalex.org/keywords/noise","display_name":"Noise (video)","score":0.49015435576438904},{"id":"https://openalex.org/keywords/pattern-recognition","display_name":"Pattern recognition (psychology)","score":0.4853493273258209},{"id":"https://openalex.org/keywords/speech-recognition","display_name":"Speech recognition","score":0.47458362579345703},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.46276941895484924},{"id":"https://openalex.org/keywords/identification","display_name":"Identification (biology)","score":0.44625455141067505},{"id":"https://openalex.org/keywords/audio-signal","display_name":"Audio signal","score":0.42859888076782227},{"id":"https://openalex.org/keywords/acoustics","display_name":"Acoustics","score":0.3145960569381714},{"id":"https://openalex.org/keywords/computer-vision","display_name":"Computer vision","score":0.16942009329795837},{"id":"https://openalex.org/keywords/medicine","display_name":"Medicine","score":0.10186821222305298},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.07542508840560913},{"id":"https://openalex.org/keywords/cardiology","display_name":"Cardiology","score":0.07245078682899475}],"concepts":[{"id":"https://openalex.org/C191178318","wikidata":"https://www.wikidata.org/wiki/Q2256906","display_name":"Thresholding","level":3,"score":0.7559230327606201},{"id":"https://openalex.org/C89600930","wikidata":"https://www.wikidata.org/wiki/Q1423946","display_name":"Segmentation","level":2,"score":0.7208377122879028},{"id":"https://openalex.org/C2776372474","wikidata":"https://www.wikidata.org/wiki/Q508291","display_name":"Simplicity","level":2,"score":0.6655933260917664},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6353632211685181},{"id":"https://openalex.org/C203718221","wikidata":"https://www.wikidata.org/wiki/Q491713","display_name":"Sound (geography)","level":2,"score":0.6157367825508118},{"id":"https://openalex.org/C2779435589","wikidata":"https://www.wikidata.org/wiki/Q967103","display_name":"Heart sounds","level":2,"score":0.5998029112815857},{"id":"https://openalex.org/C47432892","wikidata":"https://www.wikidata.org/wiki/Q831390","display_name":"Wavelet","level":2,"score":0.5932072997093201},{"id":"https://openalex.org/C2779843651","wikidata":"https://www.wikidata.org/wiki/Q7390335","display_name":"SIGNAL (programming language)","level":2,"score":0.5461257100105286},{"id":"https://openalex.org/C19118579","wikidata":"https://www.wikidata.org/wiki/Q786423","display_name":"Frequency domain","level":2,"score":0.5191959142684937},{"id":"https://openalex.org/C2984030306","wikidata":"https://www.wikidata.org/wiki/Q4819857","display_name":"Sound analysis","level":2,"score":0.5170220136642456},{"id":"https://openalex.org/C99498987","wikidata":"https://www.wikidata.org/wiki/Q2210247","display_name":"Noise (video)","level":3,"score":0.49015435576438904},{"id":"https://openalex.org/C153180895","wikidata":"https://www.wikidata.org/wiki/Q7148389","display_name":"Pattern recognition (psychology)","level":2,"score":0.4853493273258209},{"id":"https://openalex.org/C28490314","wikidata":"https://www.wikidata.org/wiki/Q189436","display_name":"Speech recognition","level":1,"score":0.47458362579345703},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.46276941895484924},{"id":"https://openalex.org/C116834253","wikidata":"https://www.wikidata.org/wiki/Q2039217","display_name":"Identification (biology)","level":2,"score":0.44625455141067505},{"id":"https://openalex.org/C64922751","wikidata":"https://www.wikidata.org/wiki/Q4650799","display_name":"Audio signal","level":3,"score":0.42859888076782227},{"id":"https://openalex.org/C24890656","wikidata":"https://www.wikidata.org/wiki/Q82811","display_name":"Acoustics","level":1,"score":0.3145960569381714},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.16942009329795837},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.10186821222305298},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.07542508840560913},{"id":"https://openalex.org/C164705383","wikidata":"https://www.wikidata.org/wiki/Q10379","display_name":"Cardiology","level":1,"score":0.07245078682899475},{"id":"https://openalex.org/C59822182","wikidata":"https://www.wikidata.org/wiki/Q441","display_name":"Botany","level":1,"score":0.0},{"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/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0},{"id":"https://openalex.org/C13895895","wikidata":"https://www.wikidata.org/wiki/Q3270773","display_name":"Speech coding","level":2,"score":0.0},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0},{"id":"https://openalex.org/C115961682","wikidata":"https://www.wikidata.org/wiki/Q860623","display_name":"Image (mathematics)","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/icassp.2011.5946490","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icassp.2011.5946490","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2011 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.6899999976158142,"id":"https://metadata.un.org/sdg/10","display_name":"Reduced inequalities"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":13,"referenced_works":["https://openalex.org/W573175465","https://openalex.org/W2010461070","https://openalex.org/W2021134456","https://openalex.org/W2078182564","https://openalex.org/W2083083343","https://openalex.org/W2103272816","https://openalex.org/W2120814030","https://openalex.org/W2159132780","https://openalex.org/W2162451429","https://openalex.org/W2166735184","https://openalex.org/W2169863454","https://openalex.org/W6683080613","https://openalex.org/W6684732385"],"related_works":["https://openalex.org/W2368019753","https://openalex.org/W11208178","https://openalex.org/W2372174494","https://openalex.org/W4377224117","https://openalex.org/W2887526024","https://openalex.org/W2419952661","https://openalex.org/W2410704232","https://openalex.org/W65399432","https://openalex.org/W2055070405","https://openalex.org/W2946014189"],"abstract_inverted_index":{"Heart":[0],"sound":[1,30,54,96],"is":[2],"one":[3],"of":[4,50,94,100,113,115,121,141],"the":[5,34,44,48,61,64,69,85,92,95,98],"significant":[6],"bio-signals":[7],"to":[8,14,21,90],"diagnose":[9],"certain":[10],"cardiac":[11],"anomalies.":[12],"Aiming":[13],"provide":[15],"an":[16,80],"automatic":[17],"heart":[18,29],"sounds":[19],"analysis":[20],"medical":[22],"professionals,":[23],"we":[24],"present":[25],"a":[26,107],"method":[27,40,78],"for":[28,83],"segmentation":[31],"based":[32],"on":[33],"signal's":[35],"simplicity":[36,57,86],"and":[37,52,58,71,87,128,134,139,143],"strength.":[38],"The":[39,77,102],"has":[41],"two":[42],"phases:":[43],"first":[45],"phase":[46,66],"identifies":[47],"timings":[49,93],"SI":[51,70,127,133],"S2":[53,72,129,135],"limits":[55],"using":[56,73,106],"strength":[59,88],"in":[60,97,126],"wavelet":[62],"domain;":[63],"second":[65],"discriminates":[67],"among":[68],"high":[74],"frequency":[75],"information.":[76],"incorporates":[79],"adaptive":[81],"approach":[82],"thresholding":[84],"profiles":[89],"detect":[91],"presence":[99],"murmur.":[101],"algorithm":[103],"was":[104,124],"tested":[105],"database":[108],"that":[109],"contains":[110],"7":[111],"types":[112],"murmurs":[114],"various":[116],"grades.":[117],"An":[118],"average":[119],"accuracy":[120],"4.22":[122],"ms":[123],"achieved":[125],"boundaries":[130],"identification.":[131],"Regarding":[132],"classification":[136],"overall":[137],"sensitivity":[138],"specificity":[140],"91.78%":[142],"90.41%":[144],"were":[145],"obtained,":[146],"respectively.":[147]},"counts_by_year":[{"year":2022,"cited_by_count":1},{"year":2019,"cited_by_count":2},{"year":2016,"cited_by_count":3},{"year":2015,"cited_by_count":1},{"year":2013,"cited_by_count":1},{"year":2012,"cited_by_count":1}],"updated_date":"2026-07-14T23:27:15.235271","created_date":"2025-10-10T00:00:00"}