Document Detail


Analogical model for mechanical vibrations in flue organ pipes inferred by independent component analysis.
MedLine Citation:
PMID:  17902875     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
Several experiments have been performed to investigate the mechanical vibrations associated with an organ pipe. The measurements have been made by using laser Doppler vibrometry, a well-known not-invasive optical measurement technique that is very widely used in structural dynamics. The recorded signals are analyzed by using a well-established decomposition method in time domain, i.e., independent component analysis. Asymptotic dynamics methods to recognize low-dimensional dynamic system associated with this wave field is then considered. The full-toned recorded signals appear decomposed into three independent components. The independent components are nonlinear due to the fractal dimension of the attractor. These results for the mechanic vibrational field are compared with those of the acoustic one. It is interesting to note that the two fields have many common characteristics. Finally, a low-dimensional dynamic system that reproduces the main characteristics of the mechanical wave field in the time and frequency domains is introduced.
Authors:
Enza De Lauro; Salvatore De Martino; Enrico Esposito; Mariarosaria Falanga; Enrico Primo Tomasini
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of the Acoustical Society of America     Volume:  122     ISSN:  1520-8524     ISO Abbreviation:  J. Acoust. Soc. Am.     Publication Date:  2007 Oct 
Date Detail:
Created Date:  2007-10-01     Completed Date:  2007-11-28     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7503051     Medline TA:  J Acoust Soc Am     Country:  United States    
Other Details:
Languages:  eng     Pagination:  2413-24     Citation Subset:  -    
Affiliation:
Physics Department, Salerno University, S. Allende Street, 84081 Baronissi, Salerno, Italy. delauro@sa.infn.it
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