| 摘要 |
PROBLEM TO BE SOLVED: To make obtainable an antenna output and a normal signal output from a single signal output terminal by switching over even though a wireless transmitting circuit is incorporated. SOLUTION: This instrument is provided with a sounding circuit 12, which generates prescribed electroacoustic signals in accordance with sounding sources such as a string and a keyboard, a wireless transmitting circuit 13, which generates radio signals that are RF modulated by the electroacoustic signals, a signal output terminal 11 and switching means 14 which selectively switch the terminal 11 to either one of the circuit 12 or the circuit 13. By the switching operation of the means 14, the terminal 11 is commonly used as an output terminal to output the electroacoustic signals to an external equipment through a signal cable and as an antenna output terminal to transmit radio signals to an external equipment by the circuit 13. |
