The perceived properties of a digital piano keyboard were studied in two experiments involving different types of vibrotactile cues in connection with sonic feedback. The first experiment implemented a free playing task in whichudsubjects had to rate the perceived quality of the instrument according to five attributes: Dynamic control, Rich-udness, Engagement, Naturalness, and General preference. The second experiment measured performance in timingudand dynamic control in a scale playing task. While the vibrating condition was preferred over the standard non-udvibrating setup in terms of perceived quality, no significant differences were observed in timing and dynamics accu-udracy. Overall, these results must be considered preliminary to an extension of the experiment involving repeated mea-udsurements with more subjects.
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