An artificial blowing machine to investigate single-reed woodwind instruments under controlled articulation conditions

Single-reed woodwind instruments have been traditionally used in marching bands, along with brass and percussion instruments. Their physical properties have been a subject of study since the last century. In order to be able to visualize the phenomena that take place at the excitation mechanism under controlled conditions, the use of artificial playing machines has been established. This study presents the developement of an artificial blowing machine for single-reed woodwind instruments. It includes an automated artificial tongue so that different types of articulation are achieved. This is demonstrated by playing a series of notes on the saxophone separated using the artificial tongue. Furthermore, the blowing machine is used to determine how changes in mouthpiece geometry may affect the threshold blowing pressure. Using custom made saxophone mouthpieces, it is shown that the oscillation threshold is proportional to the tip opening given by the manufacturer. This minimum blowing pressure, required for o...