VITA 2010

	Vienna Talk 2010 on Music Acoustics "Bridging the Gaps" September 19–21

List of Vienna Talk 2010 presenters

Amir, Noam (P,O)

Andermann, Martin (P)

Arzt, Andreas (O)

Bastos, Patricia Lopes (P)

Beauchamp, James Warren (O,O)

Bendl, Ingrid (P)

Bertsch, Matthias (P)

Bisesi, Erica Elisabetta (O)

Buen, Anders (O)

Campbell, Murray (O)

Cano, Estefania (P)

Carral, Sandra (P)

Carter, Stewart Arlen (O)

Chatziioannou, Vasileios (P)

Chick, John (O)

Curtit, Marthe (O)

Dalmont, Jean-Pierre (O)

Davidenkova, Ekaterina (O)

Demoucron, Matthias (O)

Doutaut, Vincent (P)

Dörfler, Monika (O)

Flossmann, Sebastian (O)

Fouilhe, Eric (O)

Fricke, Jobst P. (O)

Fritz, Claudia (O)

Gingras, Bruno (O)

Goebl, Werner (P)

Granzotto, Nicola (P)

Grosshauser, Tobias (O)

Guettler, Knut (O)

Hansen, Uwe J (O)

Kartofelev, Dmitri (P)

Kausel, Wilfried (P)

Kemp, Jonathan (O,O)

Klaus, Sabine Katharina (O)

Kostek, Bozena (O)

Lambrechts-Douillez, Jeannine (O)

Lohri, Angela (P)

Marchand, Sylvain (O)

Mayer, Alexander (P)

Moore, Thomas (O,O)

Morrison, Andrew (O)

Myers, Arnold (O)

Nederveen, Cornelis J (O)

Niedermayer, Bernhard (O)

Norman, Lisa (O)

Oehler, Michael (O)

Otcenasek, Zdenek)

Pyle, Robert W. (O,O)

Presentation type: Oral / Invited

Is it the player or is it the instrument?

Previous measurements of trombone tones (J. Acoust. Soc. Am., Vol. 125, No. 4, Pt. 2, April 2009, p.2597) showed considerable player-to-player variability in the degree to which the radiated spectrum changes with different bell alloys. This might arise in the following way. Consider two very different players, A and B. Player A is able to produce the desired timbre, independent of the bell alloy, by altering the embouchure as needed. Given a choice of instruments, player A will presumably pick the one that most easily produces that timbre. Player B, on the other hand, always blows each instrument as freely as possible, allowing the instrument to determine the tone quality, and then chooses an instrument with the desired timbre. It is plausible to think that the characteristics of the sound pressure in the mouthpiece cup will show greater variability (with changes of bell alloy) for player A than for player B due to the embouchure adjustments by player A. This hypothesis will be tested by simultaneous measurement of sound pressure internally within the mouthpiece and externally on the bell axis. The relationship between the internal and external sound pressures, to the extent that it is independent of the player, may reinforce (or, perhaps, contradict) common beliefs among players and instrument builders about the effect of alloy on tone color.

Presentation type: Oral / Invited

The influence of mouthpiece cup shape on "brassiness"

The degree of spectral enrichment of brass-instrument tone due to non-linear propagation in the instrument depends not only on the amplitude of the sound, but also on the maximum rate of change of the sound pressure in the mouthpiece. A skilled player has some control over the generated wave shape, but the internal contour of the mouthpiece is also very important. Judging from the sounds produced, a funnel-shaped (horn-like) mouthpiece encourages a less steep waveform than does a bowl-shaped (trumpet-like) mouthpiece. This talk will open with a review of the physics of finite-amplitude sound propagation in a flaring tube, and how this has led to the definition of a ``brassiness coefficient'' that predicts the relative degree of spectral enrichment for various brass instruments. The remainder of the talk will focus on the influence of the mouthpiece. Internal (within the mouthpiece) and external (beyond the bell) measurements of sound pressure and spectrum will be shown for a trumpet equipped with both a conventional trumpet mouthpiece and a flugelhorn mouthpiece.

Reuter, Christoph (O)

Richardson, Bernard (P,O)

Rose, Maria (O)

Rossing, Thomas D. (O,O)

Sanchez, Monica (P)

Schoonderwaldt, Erwin (O)

Sharp, David (O)

Siddiq, Sadjad (P)

Skala, Jan (P)

Smith, Richard (O)

Sundberg, Johan)

Taylor, Crissman (O)