| 摘要 |
<p>The device makes it possible to use one single transducer T for 1, 2, 3,...N number of keys with the aid of discriminator blocks D1, D2, D3,...DN to which consent to open is given by an electrical control signal 10a that is received as each key is depressed. The price at which musical instruments provided with a keyboard are marketed has hitherto been related, to a great extent, to the fact that each key has had to be linked functionally to its own transducer.</p> |
