Abstract
Flute-like instruments operate under a feedback system between an air jet and a resonator. The characteristics of the air jet and its interaction with the resonator are defined by construction in some flute-like instruments such as the organ pipes, or completely determined by the musician’s control like in the Shakuhachi, panpipe, or transverse flute. In this article, a 3D lips detection system based on active vision using laser grid triangulation has been designed and implemented. Simple musical gestures from transverse flute players have been measured and analyzed, outlying the strategies used to coordinate the parameters available, such as lips to labium distance, jet speed, and jet shape, to orchestrate an adequate sound. The analysis is presented in a non-dimensional representation capable of generalizing to other members of the flute family. The measurement system developed is compared with previous strategies and reveals a promising tool to further understand the complexity of the human control in this popular family of instruments.
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