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COMMUNICATION DEVICE FOR DIGITAL PIANO EDUCATION
COMMUNICATION DEVICE FOR DIGITAL PIANO EDUCATION
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机译:数码钢琴教育通信装置
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摘要
The device improves efficiency of education for piano lessons whether for individual or not. The device includes a piano jack (10) which inputs piano signals, a communication microphone jack (8), a calling button (7), a headphone jack (9), a microphone amplifier (15) and stereo amplifier (17), a signal transfer unit (11), a main amplifier (12), a calling display LED (1), a selecting display LED (2), a selecting button (3), a total selecting button (4), a total removing button (5), a transfer adjust unit (13) and a power supply circuit (14).
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