Development of auditory feedback system for violin playing robot


This paper introduces the development of auditory feedback system that evaluates the sounds of violin played by a robot and then decides how to operate generating a better sound automatically by mimicking a mechanism of how people learn to play an instrument. In order to verify the importance of auditory feedback when playing a violin, the performance result of three experiments is compared to the frequency of G-string. The experiment results confirm that the desired level of play is difficult even if an expert violinist is played without the auditory feedback. Bowing speed, bowing force, and sound point are three factors that determine the sound quality of violin. In the proposed auditory feedback system, the bowing speed is estimated by the control command of robot arm, where the bowing force and the sound point are recognized by using the two-axis load cell and the photo interrupter, respectively. Through the framework of the proposed auditory feedback system, the improvement in the performance quality is confirmed in actual experiment by accordingly changing the bowing speed, bowing force, and sound point.

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Correspondence to Donghan Kim.

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Jo, W., Lee, B. & Kim, D. Development of auditory feedback system for violin playing robot. Int. J. Precis. Eng. Manuf. 17, 717–724 (2016).

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  • Violin playing robot
  • Auditory feedback
  • Force feedback
  • Human-robot interaction