instruments à vents
In a previous presentation, the directional pattern of some instruments of the woodwind family was modeled and compared. These instruments, oboe, clarinet, and flute, were chosen for their straight tube and for the fact that the simplication that the holes of the lattice are aligned and oriented in the same direction did not introduce big errors. A second class of instruments of this family are instruments with curved tubes, for example the bassoon, the bass clarinet, or the alto saxophone. The original model was modified to take into account the curves but also the real orientation of the holes. The far-field radiated pressure was calculated at a constant radius on a spere enclosing the instrument. The main difficulty with this model is expressing the directivity of each opening (holes and bell) in the same coordinate systeme. In the cases where this leads to excessive calculation, some simplifications are proposed. Model results were compared with experimental measurements of actual instruments. Comparisons of the directional radiation between these instrumentsand also with straight ones will be represented. Implications for the perception of these instruments will be discussed.
Contribution au colloque ou congrès : ICA: International Congress on Acoustics