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Mouthpiece Modeling of the Electronic Wind Instrument Using a Propeller and Linear Analysis for Fast Tracking Wind Velocity  

Kwak, Jae-Hyung (광운대학교 정보디스플레이학과)
Lee, Gang-Seong (광운대학교 정보디스플레이학과)
Abstract
In this paper, we propose a new mouthpiece model for the electronic wind instrument using a propeller and linear analysis for fast tracking wind velocity blown. This method is a modification of the velocity anemometer for fast tracking wind velocity by the propeller's angular velocity (speed of revolution). In the case of velocity anemometer, wind velocity is calculated using the property that wind velocity is in proportion to the propeller's angular velocity. However, wind velocity and angular velocity of the propeller are not in one-one correspondence because wind velocity takes some transitional time for the expected wind velocity to be calculated from angular velocity. To resolve this problem, we propose a method for finding the impulse response of the system which can be considered as a linear system, and for estimating the wind velocity by deconvolving the propeller's angular velocity with the impulse response. To experiment and to prove the validity of the proposed system, we designed a mouthpiece model which consists of a motor, a propeller and an encoder. The result of estimated wind velocity in this method showed that this system is about eightfold faster than the method by the conventional velocity anemometer.
Keywords
Modeling; Mouthpiece; Electronic; Wind Instrument; Propeller;
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