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Nihanje membrane zvočnika : diplomsko delo
Matičič, Tjaša (Author), Golli, Bojan (Mentor) More about this mentor... This link opens in a new window, Bavdek, Gregor (Co-mentor)

URLURL - Presentation file, Visit http://pefprints.pef.uni-lj.si/id/eprint/3103 This link opens in a new window

Abstract
V diplomskem delu je gibanje membrane zvočnika predstavljeno kot dušeno vsiljeno nihanje. Opisan je poskus, s katerim lahko določimo lastno frekvenco zvočnega sistema. Pokažemo tudi, da se lastna frekvenca zvočnega sistema spremeni, če zvočnik zapremo v vakuumsko ali v helijevo komoro. Ugotovimo, da poleg zvočne membrane niha tudi nekaj tako imenovanega ujetega okoliškega plina in iz meritev ocenimo koliko. Membrano zvočnika obravnavamo tudi kot bat, ki povzroča tlačne razlike. Zvočnik vpnemo v ploščo in pokažemo, da je izkoristek vpetega zvočnika večji od nevpetega.

Language:Slovenian
Keywords:impedanca zvočne tuljave, izkoristek zvočnika
Work type:Bachelor thesis/paper (mb11)
Tipology:2.11 - Undergraduate Thesis
Organization:PEF - Faculty of Education
Year:2015
Publisher:[T. Matičič]
Number of pages:34 str.
UDC:53:621.395.623.7(043.2)
COBISS.SI-ID:10725961 Link is opened in a new window
Views:916
Downloads:172
Metadata:XML RDF-CHPDL DC-XML DC-RDF
 
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Secondary language

Language:English
Title:Oscillation of speaker cone
Abstract:
In the diploma thesis I describe the loudspeaker cone as a dumped forced oscilator and present an experiment in which the natural frequency of the loudspeaker system is measured. I show, that the resonant frequency changes if loudspeaker operates in helium atmosphere or vacuum, because of the air or helium load mass. I measure and estimate the mass of the load air and helium. The cone is also represented as a piston, which causes a pressure difference. I attach loudspeaker to a panel and show that this way the loudspeaker efficiency improves.

Keywords:loudspeaker

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