Evaluating Electric Guitar Strumming Form as Musically Correct Rhythm And Sharpness Using Wrist-Wom Inertial Motion-Tracking Device
Fumiyoshi Kamo, Soichiro Matsushita · 2022
A wrist-worn inertial motion-tracking device using a commercially available sensor chip has been investigated for a motion evaluation on a chord strumming technique of electric guitar. Several motion parameters such as elbow-swinging angle, wrist-twisting angle, and angular jerk on the wrist-twisting axis were examined for the strumming diagnosis. Three professional guitarists and amateur players having a wide range of playing experience participated in the chord strumming evaluation experiments. As a result, it was found that musically important parameters including playing rhythm deviation and strumming sharpness were able to be estimated without using sound recorders or cameras. A newly developed evaluation algorithm for the strumming sharpness may clearly distinguish the professional and amateur guitarists. In addition, application software for PC enabled the guitar players to compare their performances with those of professional guitarists as well as of themselves in the past. A guitar strumming task finder based on the elbow-swinging angle signal enabled the user to locate a specific timing for evaluation. An experimental guitar lesson class with the easy-to-use motion analysis system showed that both the task annotation and the performance evaluation can be performed without introducing significant cost in terms of time and environmental care.