Authors
Chun-Chieh Wang*
Department of Automation Engineering and Institute of Mechatronoptic Systems,
Chienkuo Technology University, Taiwan
*Email: [email protected]
Corresponding Author
Chun-Chieh Wang
Received 6 November 2020, Accepted 22 September 2021, Available Online
27 December 2021.
DOI
https://doi.org/10.2991/jrnal.k.211108.010
Keywords
Auto-score-recognition soprano recorder machines (ASRSRM); LabVIEW; Arduino;
fuzzy theory-based air valve control; pneumatic cylinder
Abstract
In the past research, there are many disadvantages to score recognition
and flute performance. In view of this, we will improve the above disadvantages
in this article. First, for the music score recognition, a y-axis projection
method is used to detect the staff position and eliminate it to replace
the erosion and expansion in morphology. This feature can be used to distinguish
the notes, which have a specific writing style on the staff. For the soprano
recorder playing, in the past we used finger-shaped electric arms to press
the blow hole to cause that the speed of the score cannot be kept up. To
improve this drawback, the motor is changed to a solenoid valve to facilitate
the pneumatic cylinder to smoothly press the blow hole. In addition, since
the difference in pitch of the soprano recorder requires different air
pressure, we increase one valve to three valves. Moreover, the range is
divided into bass, midrange, and treble. Not only that, fuzzy theory-based
air valve control is applied to auto-score-recognition soprano recorder
machines to greatly improve the sound distortion caused by the original
single air valve. Experiments prove that the fuzzy theory-based air valve
control combined with sheet music recognition techniques can fully realize
the functions of autoplaying soprano recorder machines.
Copyright
© 2021 The Author. Published by ALife Robotics Corp. Ltd.
Open Access
This is an open access article distributed under the CC BY-NC 4.0 license
(http://creativecommons.org/licenses/by-nc/4.0/).