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Self-powered piezoelectric player-interactive patch for guitar learning assistance

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Abstract

Device-assisted practice for instrument learning has been widely used by professional and amateur musicians to improve their learning efficiency. This study fabricates a novel self-powered and flexible player-interactive patch for guitar-learning assistance based on a piezoelectric T-ZnO/PVDF film. The system consists primarily of three parts: a flexible piezoelectric T-ZnO/PVDF film for pressure sensing, a signal processing module for analyzing the sensed signal, and light-emitting diode (LED) indicators for visualizing guitar performance. The sensing film can be conformably fixed on a guitar and can convert the mechanical energy generated by pressing a finger on a string into a piezoelectric signal without any external power supply. The output voltage of the film can act as a sensing signal for guitar performance, and both the response and recovery times are short. As fingers press on different strings, a series of piezoelectric signals are generated and transferred to the signal processing module, subsequently lighting up LEDs of different colors. The actions of the fingers during guitar playing are reflected by the corresponding LED indicators. The proposed system can help players adjust their posture and rhythm in real time, thus improving their playing technique. This study demonstrates the potential application of self-powered sensing systems in musical instrument learning assistance.

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Author notes

  1. These authors contributed equally to this work.

Authors and Affiliations

  1. School of Physics, University of Electronic Science and Technology of China, Chengdu, 611731, China

    Yu Lei, Shan Liang, TianYan Zhong, LiLi Xing & XinYu Xue

  2. Department of Mechanical Engineering, City University of Hong Kong, Hong Kong, 999077, China

    ZhiHe Long

Authors
  1. Yu Lei
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  2. ZhiHe Long
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  3. Shan Liang
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  4. TianYan Zhong
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  5. LiLi Xing
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  6. XinYu Xue
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Corresponding authors

Correspondence to LiLi Xing or XinYu Xue.

Additional information

This work was supported by the National Natural Science Foundation of China (Grant No. 11674048), and Sichuan Science and Technology Program (Grant Nos. 2020JDJQ0026 and 2021YFG0140).

Supporting Information

The supporting information is available online at tech.scichina.com and link.springer.com. The supporting materials are published as submitted, without typesetting or editing. The responsibility for scientific accuracy and content remains entirely with the authors.

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Lei, Y., Long, Z., Liang, S. et al. Self-powered piezoelectric player-interactive patch for guitar learning assistance. Sci. China Technol. Sci. 65, 2695–2702 (2022). https://doi.org/10.1007/s11431-022-2181-y

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  • DOI: https://doi.org/10.1007/s11431-022-2181-y

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