{"?xml":{"@version":"1.0"},"edm:RDF":{"@xmlns:dc":"http://purl.org/dc/elements/1.1/","@xmlns:edm":"http://www.europeana.eu/schemas/edm/","@xmlns:wgs84_pos":"http://www.w3.org/2003/01/geo/wgs84_pos","@xmlns:foaf":"http://xmlns.com/foaf/0.1/","@xmlns:rdaGr2":"http://rdvocab.info/ElementsGr2","@xmlns:oai":"http://www.openarchives.org/OAI/2.0/","@xmlns:owl":"http://www.w3.org/2002/07/owl#","@xmlns:rdf":"http://www.w3.org/1999/02/22-rdf-syntax-ns#","@xmlns:ore":"http://www.openarchives.org/ore/terms/","@xmlns:skos":"http://www.w3.org/2004/02/skos/core#","@xmlns:dcterms":"http://purl.org/dc/terms/","edm:WebResource":[{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-3ROXADUX/ea9fb530-7b99-4441-9e04-17fbb012064d/HTML","dcterms:extent":"23 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-3ROXADUX/c28dc388-8bf8-449c-b616-3366b4e6d310/PDF","dcterms:extent":"275 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-3ROXADUX/9db3e82b-3e95-4683-947e-34666bf91254/TEXT","dcterms:extent":"18 KB"}],"edm:TimeSpan":{"@rdf:about":"1999-2025","edm:begin":{"@xml:lang":"en","#text":"1999"},"edm:end":{"@xml:lang":"en","#text":"2025"}},"edm:ProvidedCHO":{"@rdf:about":"URN:NBN:SI:DOC-3ROXADUX","dcterms:isPartOf":[{"@rdf:resource":"https://www.dlib.si/details/URN:NBN:SI:spr-6QOUKQ9A"},{"@xml:lang":"sl","#text":"Strojniški vestnik"}],"dcterms:issued":"2008","dc:creator":["Černetič, Jan","Čudina, Mirko","Prezelj, Jurij"],"dc:format":[{"@xml:lang":"sl","#text":"številka:10"},{"@xml:lang":"sl","#text":"letnik:54"},{"@xml:lang":"sl","#text":"6 strani"},{"@xml:lang":"sl","#text":"str. 649-654"}],"dc:identifier":["ISSN:0039-2480","COBISSID:10724379","URN:URN:NBN:SI:doc-3ROXADUX"],"dc:language":"en","dc:publisher":[{"@xml:lang":"sl","#text":"Association of Mechanical Engineers and Technicians of Slovenia et al."},{"@xml:lang":"sl","#text":"Zveza strojnih inženirjev in tehnikov Slovenije et al."}],"dc:subject":[{"@xml:lang":"sl","#text":"aktivno dušenje hrupa"},{"@xml:lang":"sl","#text":"fazni zamik"},{"@xml:lang":"sl","#text":"povratna zanka"},{"@xml:lang":"sl","#text":"simulacija"},{"@rdf:resource":"http://www.wikidata.org/entity/Q925667"}],"dcterms:temporal":{"@rdf:resource":"1999-2025"},"dc:title":{"@xml:lang":"sl","#text":"Simple feedback structure of active noise control in a duct|"},"dc:description":[{"@xml:lang":"sl","#text":"An active noise control is usually constructed with the use of electronic filters. For sufficient noise attenuation, electronic filters are not always needed. In this case, the electronic controller and appropriate software is not required so the system can be much easier. This paper deals with the use of a feedback structure of active noise control in an experimental ventilation duct. Simulation was performed to investigate the efficiency of a simple analoguous system for active noise control without incorporating electronic filters. The transfer function of the entire analogous system can be used to predict the maximum attenuation level. Tests were made to verify the simulation and to show what noise attenuation level can be achieved in an experimental duct. It has been shown that in a specific frequency range this kind of a system is efficient enough for use in some ventilation ducts"},{"@xml:lang":"sl","#text":"Sistem za aktivno dušenje hrupa ponavadi vsebuje elektronske filtre. Vendar za učinkovito delovanje ti filtri niso vedno nujno potrebni. V tem primeru odpade potreba po elektronskem krmilniku in ustrezni programski opremi, kar naredi sistem veliko bolj preprost in cenejši. V tem prispevku je predstavljen zančni sistem za aktivno dušenje hrupa v eksperimentalnem prezračevalnem kanalu, brez uporabe elektronskih filtrov. Narejena je bila simulacija, s katero se je ugotavljalo učinkovitost preprostega analognega zančnega sistema za aktivno dušenje hrupa. Za oceno najvišje možne ravni dušenja je bila uporabljena prenosna funkcija celotnega dejanskega sistema. Opravljeni so bili preizkusi, kjer je bila izmerjena raven dušenja oz. učinkovitost danega sistema, le-ta pa je bila nato primerjana s teoretičnimi vrednostmi iz simulacije. Izkazalo se je, da je v določenem frekvenčnem območju takšen sistem dovolj učinkovit za uporabo v nekaterih prezračevalnih kanalih"}],"edm:type":"TEXT","dc:type":[{"@xml:lang":"sl","#text":"znanstveno časopisje"},{"@xml:lang":"en","#text":"journals"},{"@rdf:resource":"http://www.wikidata.org/entity/Q361785"}]},"ore:Aggregation":{"@rdf:about":"http://www.dlib.si/?URN=URN:NBN:SI:DOC-3ROXADUX","edm:aggregatedCHO":{"@rdf:resource":"URN:NBN:SI:DOC-3ROXADUX"},"edm:isShownBy":{"@rdf:resource":"http://www.dlib.si/stream/URN:NBN:SI:DOC-3ROXADUX/c28dc388-8bf8-449c-b616-3366b4e6d310/PDF"},"edm:rights":{"@rdf:resource":"http://rightsstatements.org/vocab/InC/1.0/"},"edm:provider":"Slovenian National E-content Aggregator","edm:intermediateProvider":{"@xml:lang":"en","#text":"National and University Library of Slovenia"},"edm:dataProvider":{"@xml:lang":"sl","#text":"Univerza v Ljubljani, Fakulteta za strojništvo"},"edm:object":{"@rdf:resource":"http://www.dlib.si/streamdb/URN:NBN:SI:DOC-3ROXADUX/maxi/edm"},"edm:isShownAt":{"@rdf:resource":"http://www.dlib.si/details/URN:NBN:SI:DOC-3ROXADUX"}}}}