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Dimensionless Amplitude of the Internal Acoustic Filed in Flue Instruments

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text
 

Genre(s)

article
 

Forme(s)

document numérique
 

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Titre

Dimensionless Amplitude of the Internal Acoustic Filed in Flue Instruments
 

Nom(s)

Hirschberg, Abraham (auteur)
 
Verge, Marc-Pierre (auteur)
 
Wijnands, A. P. J. (auteur)
 

Publication

Dourdan, France , 1995
 

Description

Sujet(s)

acoustique instrumentale   flue organ pipe   wind instruments   amplitude   fundamental oscillation mode   flow visualizations
 

Résumé

Dimensionless representation of the pressure signal measured inside a flue organ pipe shows that the dimensionless amplitude is a function of the Strouhal number only. This behavior indicates that amplitude saturation is due to a non-linear interaction of the acoustic flow with the jet flow. Correlation of these results with flow visualizations stresses the importance of vortex shedding at the edge of the labium. (...) The aim of the present paper is to demonstrate the power of dimensionless representation of experimental data as a tool to track down basic physical mechanisms in the sound production of wind instruments. Using the example of the amplitude of the fundamental oscillation mode we will, by correlation with flow visualizations, obtain a caricature which may explain some features of the sound production in flue instruments.
 

Note(s)

Contribution au colloque ou congrès : ISMA: International Symposium of Music Acoustics
 

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Date de la notice

2010-02-25 01:00:00
 

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