About: Switching Amplifier Used in Shunt Negative Impedance Disposals for Active Control of Transducer's Acoustic Impedance

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About: Switching Amplifier Used in Shunt Negative Impedance Disposals for Active Control of Transducer's Acoustic Impedance Goto Sponge NotDistinct Permalink

An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The concept of %22active material%22 with variable acoustic properties is presented. The active material is constituted of an electroacoustic transducer which acoustic impedance can be changed by an active mean. Among the different ways to obtain variable acoustic properties on an electroacoustic transducer's voicing face is the shunting of the transducer's electrical input. The advantage of the active mean is that it should theoretically allow obtaining very high values of acoustic impedances, in other words to even obtain perfect isolating acoustic material. when it comes to absorbing/reflecting very high sound pressure levels, these devices are pushed towards their functional limits. In order to counteract the aforementioned problems, a switching amplifier has been designed for the negative impedance disposal. The present work will describe the design of such a switching amplifier for enhanced stability and performances of the active material concept. The concept of %22active material%22 with variable acoustic properties is presented. The active material is constituted of an electroacoustic transducer which acoustic impedance can be changed by an active mean. Among the different ways to obtain variable acoustic properties on an electroacoustic transducer's voicing face is the shunting of the transducer's electrical input. The advantage of the active mean is that it should theoretically allow obtaining very high values of acoustic impedances, in other words to even obtain perfect isolating acoustic material. when it comes to absorbing/reflecting very high sound pressure levels, these devices are pushed towards their functional limits. In order to counteract the aforementioned problems, a switching amplifier has been designed for the negative impedance disposal. The present work will describe the design of such a switching amplifier for enhanced stability and performances of the active material concept. (en)
Title	Switching Amplifier Used in Shunt Negative Impedance Disposals for Active Control of Transducer's Acoustic Impedance Switching Amplifier Used in Shunt Negative Impedance Disposals for Active Control of Transducer's Acoustic Impedance (en)
skos:prefLabel	Switching Amplifier Used in Shunt Negative Impedance Disposals for Active Control of Transducer's Acoustic Impedance Switching Amplifier Used in Shunt Negative Impedance Disposals for Active Control of Transducer's Acoustic Impedance (en)
skos:notation	RIV/46747885:24220/09:#0001259!RIV10-GA0-24220___
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(GA101/08/1279)
http://linked.open...vai/riv/dodaniDat	2010
http://linked.open...aciTvurceVysledku	Černík, Martin Mokrý, Pavel Václavík, Jan
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Technická univerzita v Liberci / Fakulta mechatroniky, informatiky a mezioborových studií
http://linked.open...dnocenehoVysledku	344946
http://linked.open...ai/riv/idVysledku	RIV/46747885:24220/09:#0001259
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Active acoustic material; Impedance invertor; Switching amplifier (en)
http://linked.open.../riv/klicoveSlovo	Active acoustic material Impedance invertor Switching amplifier
http://linked.open...ontrolniKodProRIV	[EF586A890DCD]
http://linked.open...v/mistoKonaniAkce	Krakov, Polsko
http://linked.open...i/riv/mistoVydani	Cracow, Poland
http://linked.open...i/riv/nazevZdroje	Proceedings of the 16th International Congress on Sound and Vibration, Cracow, Poland
http://linked.open...in/vavai/riv/obor	BI
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Modern methods for noise and vibration suppression using piezoelectric materials
http://linked.open...UplatneniVysledku	2009
http://linked.open...iv/tvurceVysledku	Mokrý, Pavel Václavík, Jan Černík, Martin Boulandet, Romain Lissek, Hervé
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open.../riv/zahajeniAkce	2009-07-05 (xsd:date)
number of pages	7 (xsd:int)
http://purl.org/ne...btex#hasPublisher	International Institute of Acoustics and Vibration (IIAV), Poland
https://schema.org/isbn	978-83-60716-71-7
http://localhost/t...ganizacniJednotka	24220

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