2024-03-29T13:16:21Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/59942016-02-16T03:04:53Zcom_10261_32com_10261_4col_10261_411
Cuesta, María
Cobo, Pedro
Pfretzschner, Jaime
Fernández, Alejandro
2008-07-21T19:07:17Z
2008-07-21T19:07:17Z
2004-04
18th International Congress on Acoustics, Engineering acoustics and electro-acoustics. 6. Active noise control, Tu4.E.2
http://hdl.handle.net/10261/5994
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.
eng
openAccess
Sound absorption
Noise control
Active/Passive Techniques
Standing wave tube
Hybrid absorber
Frequency range
Hybrid passive-active sound absorption in a standing wave tube using a thin plate actuator as secondary source
comunicación de congreso