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Turbulence Noise in Flue Instruments

Type

text
 

Genre(s)

article
 

Forme(s)

document numérique
 

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Titre

Turbulence Noise in Flue Instruments
 

Nom(s)

Hirschberg, Abraham (auteur)
 
Verge, Marc-Pierre (auteur)
 

Publication

Dourdan, France , 1995
 

Description

Sujet(s)

acoustique instrumentale   turbulence noise model   recorderlike flue organ pipe
 

Résumé

This paper presents a simple turbulence noise model that could be used for time domain simulations of flue instruments. The turbulence noise sources are deduced from spectra measured inside a small recorder-like flue organ pipe and by using a one-dimensional representation of the instrument. The amplitude of these sources display a maximum located at a Strouhal number corresponding, for Reynolds numbers > 3000, to the maximum instability of a plane jet. The turbulence noise source appears to have a dipolar character and its amplitude scales with the square of the jet velocity.
 

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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