The influence of the shallot shape on the sound of Trompete reed pipes

The focus of investigations was the influence of certain shallot parameters on the sound of reed pipes. Since the dimensioning of organ pipes is mainly based on the experience of organ builders at present, the aim is to provide scientific data for organ builders explaining the influence of various shallot parameters on the sound. Due to this knowledge, it would be possible to realize the desired ideas of sound of organ pipes by targeted adjustment of these parameters during the dimensioning of the pipes. The investigated Trompete shallots differ in the termination angle of the shallot. To analyze the parameter of the shallot termination, angle measurements were carried out at a simple shallot model, which provide findings on the dependence of the reflection properties on various termination angles. The results show that the findings due to the model comply with the analyses of the sound spectra of the Trompete shallot.