| 摘要 |
Disclosed is player module that includes an outer frame and a signal receiver configured to receive a plurality of note-on signals, each corresponding to a musical pitch and a plurality of note-off signals, each corresponding to a musical pitch. The player module includes a plurality of LEDs extending along the outer frame. Each LED is located above a key of a keyboard when the elongated outer frame is placed above the keys of the keyboard. Each of the plurality of LEDs is controlled by a corresponding note-on signal and a corresponding note-off signal, such that each of the plurality of LEDs is configured to illuminate when the processor receives the corresponding note-on signal and each of the plurality of LEDs is configured to stop illuminating when the processor receives the corresponding note-off signal.
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