Influence of wall vibrations on the sound of brass wind instruments.

The results of an experimental and theoretical investigation of the influence of wall vibrations on the sound of brass wind instruments are presented. Measurements of the transmission function and input impedance of a trumpet, with the bell both heavily damped and freely vibrating, are shown to be consistent with a theory that assumes that the internal pressure causes an oscillation of the diameter of the pipe enclosing the air column. These effects are shown to be most significant in sections where there are flaring walls, which explains why damping these vibrations in cylindrical pipes normally produces no measurable effects.

[1]  François Gautier,et al.  VIBROACOUSTIC BEHAVIOUR OF A SIMPLIFIED MUSICAL WIND INSTRUMENT , 1998 .

[2]  Wilfried Kausel.  Bore reconstruction of tubular ducts from its acoustic input impedance curve , 2004, IEEE Transactions on Instrumentation and Measurement.

[3]  John Backus,et al.  Effect of Wall Material on the Steady‐State Tone Quality of Woodwind Instruments , 1964 .

[4]  J. M. Bowsher,et al.  Vibration characteristics of brass instrument bells , 1982 .

[5]  Thomas R. Moore,et al.  The effects of bell vibrations on the sound of the modern trumpet , 2005 .

[6]  S. Timoshenko,et al.  Theory of Elasticity (3rd ed.) , 1970 .

[7]  Thomas R. Moore,et al.  VIBRATIONAL MODES OF TRUMPET BELLS , 2002 .

[8]  Karl Friedr. Sal. Liskovius.  Ueber die Pfeifen mit häutigen Wänden. Eine akustische Untersuchung , 1842 .

[9]  W. Kausel.  It's all in the bore! , 2007 .

[10]  R. B. Newman,et al.  The Effect of Wall Materials on the Steady‐State Acoustic Spectrum of Flue Pipes , 1940 .

[11]  Anna Runnemalm,et al.  Structural vibration modes of a blown open organ pipe , 1999 .

[12]  Energy dissipations in underwater and aerial organ pipes. , 1985 .

[13]  James Whitehouse,et al.  A study of the wall vibrations excited during the playing of lip-reed instruments , 2003 .

[14]  Dan Mapes-Riordan,et al.  Horn Modeling with Conical and Cylindrical Transmission'"Line Elements* , 1993 .

[15]  Bruce A. Lawson,et al.  Acoustical characteristics of annealed French horn bell flares , 1985 .

[16]  Jonathan A. Kemp.  Theoretical and experimental study of wave propagation in brass musical instruments , 2002 .

[17]  Robert W. Pyle.  How brass instruments are built: Art, craft, perhaps even science , 1997 .

[18]  John Backus.  Wall Vibrations in Organ Pipes and Their Effect on Tone , 1965 .

[19]  J. Gilbert,et al.  Influence of wall vibrations on the behavior of a simplified wind instrument. , 2008, The Journal of the Acoustical Society of America.

[20]  D C Miller,et al.  THE INFLUENCE OF THE MATERIAL OF WIND-INSTRUMENTS ON THE TONE QUALITY. , 1909, Science.

[21]  Richard Smith.  The effect of material in brass instruments: a review , 1986 .