Turbulence Noise in Flue Instruments

Abraham Hirschberg (1) , Marc-Pierre Verge (1)

1 Equipe Acoustique instrumentale

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.

Mots clés: turbulence noise model; recorderlike flue organ pipe

Mots clés: acoustique instrumentale; Informatique musicale

Domaines: Acoustique [physics.class-ph]; Vibrations [physics.class-ph]; Acoustique [physics.class-ph]; Vibrations [physics.class-ph]; Mécanique des solides [physics.class-ph]; Mécanique des structures [physics.class-ph]; Musique, musicologie et arts de la scène; Son [cs.SD]

Abraham Hirschberg, Marc-Pierre Verge. Turbulence Noise in Flue Instruments. ISMA: International Symposium of Music Acoustics, 1995, Dourdan, France. pp.1-1. ⟨hal-01157132⟩