Hybrid passive-active sound absorption in a standing wave tube using a thin plate actuator as secondary source

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Título:	Hybrid passive-active sound absorption in a standing wave tube using a thin plate actuator as secondary source
Autor:	Cuesta, María; Cobo, Pedro CSIC ORCID; Pfretzschner, Jaime; Fernández, Alejandro
Palabras clave:	Sound absorption Noise control Active/Passive Techniques Standing wave tube Hybrid absorber Frequency range
Fecha de publicación:	abr-2004
Editor:	International Congress on Acoustics
Citación:	18th International Congress on Acoustics, Engineering acoustics and electro-acoustics. 6. Active noise control, Tu4.E.2
Resumen:	This paper deals with the design and optimization of a hybrid passive/active liner for broadband noise reduction in a standing wave tube. The thickness of the multilayer absorbent is reduced in two steps: firstly a porous layer backed by an air gap is substituted by a microperforated panel followed by a reduced air gap; and secondly, the secondary loudspeaker is replaced by a thin plate driven by a piezoceramic patch. Experimental results show that high absorption may be achieved in a wide frequency range (100-900 Hz) with a thin hybrid passive/active absorber.
Descripción:	Communication presented at the 18th International Congress on Acoustics (ICA 2004): "Acoustical Science and Technology for Quality of Life", Kyoto, 4-9 April 2004.
URI:	http://hdl.handle.net/10261/5994
Aparece en las colecciones:	(IA) Comunicaciones congresos